August 2017: Looking Back at Harvey 5 Year Later

General Weather Discussions and Analysis
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srainhoutx
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Snowman wrote:
srainhoutx wrote:Updated 3 Day Quantitative Precipitation Forecast Outlook from the Weather Prediction Center.
Srain do you really think that we are going to get another 15 inches of rain in the next couple of days? It looks like the heaviest rain is shifting east and the storm is choking on dry air. Unless something major changes I don't see how we get 15-20 more inches of rain
We have witnessed the rapid changes throughout the history of Harvey. Many...including some on air Meteorologists yesterday stated they were hopeful the worst was over due to dry air entrainment. We see today that Harvey and nature had other ideas. Those Catastrophic QPF totals are now verifying. Even the most seasoned and typically conservative Professional Meteorologists are in awe of what Harvey has brought to our Region. Prepare for the worst...which is occurring at this time...and pray/hope for the best.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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Texaspirate11 wrote:updated shelters

◾American Legion Hall 14890 FM 2100 Rd. Crosby
◾Baytown Community Center 2407 Market St Baytown 77520
◾Church Project 295 Sawdust Rd Spring 77380
◾Copeland Elementary 24405 E. Lake Houston Pkwy" Huffman 77306
◾Crosby High School 333 W Summit Dr Crosby 77532
◾Dobie High School 10220 Blackhawk Blvd Houston 77089
◾First Baptist Church 210 N. Magnolia Highlands
◾First Baptist Church Huffman 25503 FM 2100 Huffman
◾First Baptist Church Tomball 401 Oxford St. Tomball
◾Friendswood High School 702 Greenbriar Dr Friendswood 77546
◾George R. Brown 1001 Avenida de Las America Houston
◾Golden Acres Bapist Church 2812 Pansey St. Pasadena 77503
◾Katy High School 6331 Highway Blvd Katy 77494
◾Key Middle School 4000 Kelly St. Houston 77026
◾Metropolitan Baptist Church 13000 Jones Rd Houston 77007
◾MO Campbell Ed. Center 1865 Aldine Bender Houston 77032
◾North Shore High School 13501 Holly Park Dr. Houston 77015
◾Old Matzke Elementary 13102 Jones Rd.
◾Pasadena High School 206 S Shaver Pasadena 77506
◾Patrick Henry Middle School 10702 East Hardy Rd Houston 77093
◾Paul Revere School 10502 Briar Forest Houston 77077
◾Sheldon Elementary 17203 Hall Shephard Rd Houston 77049
◾South Houston Intermediate 900 College




Emmy can i copy and paste this on facebook?
◾Trini Mendenhall 1414 Wirt Rd Houston 77055
◾Wallisville Courthouse 14350 Wallisville Rd Houston
◾Wheatley High School 4801 Providence St Houston 77020
◾Westside High School 14201 Briar Foreat Houston 77077
◾First Baptist Church 4422 Lauder Rd
◾Channelview Highschool
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ticka - yes of course
Just because you're disabled, you don't have to be a victim
Be Weather Aware & Prepared!
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This has been absolutely insane. I watched the water rise into my home early Sunday morning. I called for evac but none ever came. Eventually after 7 hours of waiting I left on foot. I trekked about 2 miles through varying heights of water finally finding a national guard truck that took me to a shelter. From there I was able to line up a hotel and get to it. I don't know when I'll be able to go back home. I'm good now but nervous about my home near Dickinson. I just want this to stop for everyone.
Been here for years since Katrina.
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sswinney wrote:This has been absolutely insane. I watched the water rise into my home early Sunday morning. I called for evac but none ever came. Eventually after 7 hours of waiting I left on foot. I trekked about 2 miles through varying heights of water finally finding a national guard truck that took me to a shelter. From there I was able to line up a hotel and get to it. I don't know when I'll be able to go back home. I'm good now but nervous about my home near Dickinson. I just want this to stop for everyone.
OMG, I can't even imagine. Glad to hear you are safe!
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sswinney wrote:This has been absolutely insane. I watched the water rise into my home early Sunday morning. I called for evac but none ever came. Eventually after 7 hours of waiting I left on foot. I trekked about 2 miles through varying heights of water finally finding a national guard truck that took me to a shelter. From there I was able to line up a hotel and get to it. I don't know when I'll be able to go back home. I'm good now but nervous about my home near Dickinson. I just want this to stop for everyone.
That is so awful. I'm glad you were able to make it to safety and I'm praying for you and your neighbors in Dickinson.
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For those who know Bill Read (Former Director of the National Hurricane Center and longtime resident of Houston) has posted an update on Facebook about an hour ago:

"Update. Not liking the recent trend on radar. Area wide rain showers have increased all morning. Of particular note is the heavier band that has formed to the north and northeast of the center of Harvey, which is currently near the coast southeast of Bay City. This band has been growing north and northeast reaching across northern Galveston County and southeastern Harris County. Rain rates according to radar are 1-2 inches per hour. While not the hellish 5-6 inch per hour rate of Saturday night, too many hours of this rain on top of our ongoing flood will be bad news. I've had just over 3 inches since 6 am. More bad news is that in my experience the rain near the core of tropical storms over land tends to increase at night. Not alway, but a concern. The center of Harvey is forecast to move slowly east then northeast along the coast then finally move northeast away from our area Wednesday.
I did a little recon of the west League City area. Neighborhood roads ok. the main road - 518- was cut off by flooding to our west before FM 528. A few lost souls had tried to drive thru and were flooded out. Hardly any businesses open. A Kroger store was open with a long line of people waiting their turn to enter. According to the news the wait was 2 hours... We are well provisioned except for coffee which if rationed properly will last through Wednesday. Enough Scotch till October. Eating mainly the perishables for now in case power fails and have at least a weeks worth of non perishables. I bet we dig into some of it before this disaster is over...
Storm total rain at Casa Read now over 3 feet.."
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Fire213 wrote:What is the cumulative rainfall total for the Pearland area since Thursday night?
https://www.harriscountyfws.org/GageDet ... v=rainfall
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BIG difference in NAM 3km 12z vs 18z. The 18z wants to slow Harvey slowing down in the Gulf near the Galveston coast and the rains intensifying overnight tonight into tomorrow as that rainshield currently over us just won't move. Scary situation and I sure hope that is just a bad model run.

HRRR is not handling this current rain over Houston at all very well. Hasn't done well last several runs, so that is not very helpful.
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Belmer wrote:BIG difference in NAM 3km 12z vs 18z. The 18z wants to slow Harvey slowing down in the Gulf near the Galveston coast and the rains intensifying overnight tonight into tomorrow as that rainshield currently over us just won't move. Scary situation and I sure hope that is just a bad model run.

HRRR is not handling this current rain over Houston at all very well. Hasn't done well last several runs, so that is not very helpful.
Not a pro met, but my gut tells me this scenario, and we all know what these systems do at night. Moderate to heavy rain all day will only intensify tonight. I hope my gut's wrong. And yes srain some local meteorologist were hopeful a drying trend seen from the water vapor would bring good tidings, but these tropical systems create their own weather. The gulf just feeds this monster and will continue to do so.
Last edited by Heat Miser on Mon Aug 28, 2017 4:02 pm, edited 1 time in total.
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BULLETIN
Tropical Storm Harvey Advisory Number 34
NWS National Hurricane Center Miami FL AL092017
400 PM CDT Mon Aug 28 2017

...SURFACE OBSERVATIONS SHOW THAT HARVEY HAS 45 MPH WINDS...
...LIFE-THREATENING FLOODING CONTINUES OVER SOUTHEASTERN TEXAS...
...DO NOT ATTEMPT TO TRAVEL IN THE AFFECTED AREAS IF YOU ARE IN
A SAFE PLACE AND DO NOT DRIVE INTO FLOODED ROADWAYS...


SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...28.5N 95.7W
ABOUT 45 MI...70 KM E OF PORT OCONNOR TEXAS
ABOUT 145 MI...235 KM SW OF PORT ARTHUR TEXAS
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...ESE OR 110 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

The Tropical Storm Warning has been extended east of Cameron,
Louisiana, to Intracoastal City, Louisiana.

A Storm Surge Watch has been issued from Port Bolivar, Texas, to
Morgan City, Louisiana.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Mesquite Bay to Intracoastal City

A Storm Surge Watch is in effect for...
* Port Bolivar to Morgan City

Catastrophic and life-threatening flooding continues in southeastern
Texas. Please see warnings and other products issued by your
local National Weather Service office for additional information on
this life-threatening situation.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.

A Storm Surge Watch means there is a possibility of life-
threatening inundation, from rising water moving inland from the
coastline, in the indicated locations during the next 48 hours.
For a depiction of areas at risk, please see the National Weather
Service Storm Surge Watch/Warning Graphic, available at
hurricanes.gov.

Interests elsewhere along the middle and upper Texas coast and in
southern Louisiana should continue to monitor the progress of
Harvey.

For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 400 PM CDT (2100 UTC), the center of Tropical Storm Harvey was
located near latitude 28.5 North, longitude 95.7 West. Harvey is
moving toward the east-southeast near 3 mph (6 km/h), and a slow
motion toward the southeast is expected through tonight. A gradual
turn toward the northeast and a continued slow forward speed are
expected Tuesday and Tuesday night. On the forecast track, the
center of Harvey is expected to be just offshore of the middle and
upper coasts of Texas through Tuesday night, then move inland over
the northwestern Gulf coast on Wednesday.

Maximum sustained winds are near 45 mph (75 km/h) with higher gusts.
Little change in strength is forecast during the next 48 hours.

Tropical-storm-force winds extend outward up to 175 miles (280 km)
from the center. The National Ocean Service automated station at
the Matagorda Bay entrance recently reported sustained winds of
46 mph (74 km/h) and a wind gust of 57 mph (92 km/h).

The minimum central pressure estimated from surface observations
along the Texas coast is 997 mb (29.44 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL: Harvey is expected to produce additional rainfall
accumulations of 10 to 20 inches through Thursday over parts of the
upper Texas coast into southwestern Louisiana. Isolated storm
totals may reach 50 inches over the upper Texas coast, including the
Houston/Galveston metropolitan area. These rains are currently
producing catastrophic and life-threatening flooding over large
portions of southeastern Texas. DO NOT ATTEMPT TO TRAVEL IN THE
AFFECTED AREA IF YOU ARE IN A SAFE PLACE. DO NOT DRIVE INTO FLOODED
ROADWAYS. Please see warnings and products issued by your local
National Weather Service office for additional information on this
life-threatening situation.

Elsewhere, Harvey is expected to produce total rain accumulations of
5 to 15 inches farther south into the middle Texas coast and farther
east across south-central Louisiana. Rainfall amounts of 5 to 10
inches are expected in southeast Louisiana.

A list of rainfall observations compiled by the NOAA Weather
Prediction Center can be found at:
www.wpc.ncep.noaa.gov/discussions/nfdscc1.html

STORM SURGE: The combination of a dangerous storm surge and the
tide will cause normally dry areas near the coast to be flooded by
rising waters moving inland from the shoreline. The water is
expected to reach the following heights above ground if the peak
surge occurs at the time of high tide...

Port Aransas to Morgan City including Galveston Bay...1 to 3 ft

The deepest water will occur along the immediate coast near the
area of onshore winds. Surge-related flooding depends on the
relative timing of the surge and the tidal cycle, and can vary
greatly over short distances. For information specific to your
area, please see products issued by your local National Weather
Service forecast office.

WIND: Tropical storm conditions are occurring in rain bands well to
the east of the center of Harvey, and along the coast to the
southwest of the center. Tropical storm conditions are likely to
persist within the warning area during the next couple of days.

SURF: Swells generated by Harvey are affecting the coasts of Texas
and Louisiana. These swells are likely to cause life-threatening
surf and rip current conditions. Please consult products from your
local weather office.

TORNADOES: A few tornadoes are possible through Tuesday across
southern Louisiana and extreme southeast Texas.


NEXT ADVISORY
-------------
Next intermediate advisory at 700 PM CDT.
Next complete advisory at 1000 PM CDT.

$$
Forecaster Beven
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HCFWS website is down.
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Tropical Storm Harvey Discussion Number 34...Corrected
NWS National Hurricane Center Miami FL AL092017
400 PM CDT Mon Aug 28 2017

Corrected initial intensity in first paragraph

Radar and surface data show that the center of Harvey remains near
or just off the Texas coast south of Matagorda. The associated
convection has increased in intensity and coverage in a cluster
extending from just north of the center northeastward into the
Houston metropolitan area. Surface observations indicate that the
central pressure is around 997 mb, and there are recent reports of
sustained tropical-storm-force winds about 50-60 n mi southwest of
the center. Based on these, the initial intensity is increased to
40 kt.

Very heavy rains and life-threatening flash flooding continue over
southeastern Texas and southwestern Louisiana. There have been
reports of 2-day rainfall totals of close to 35 inches in the
Greater Houston area. With the additional rains that are expected
over the next several days, rainfall totals could reach 50 inches in
some locations, which would be historic for the area.

While Harvey continues to produce widespread heavy rain, the
convective structure is not well organized in terms of being a
tropical cyclone. In addition, a dry slot is seen in water vapor
imagery over the southern and southeastern parts of the circulation,
and the intensity guidance is not showing much additional
development as Harvey crosses the northwestern Gulf of Mexico. The
intensity forecast reflects these issues by showing little change
in strength before landfall. Weakening and eventual decay into a
remnant low are expected after landfall.

The center has drifted erratically eastward since the last
advisory, although a longer-term motion is 110/3. Harvey is
currently between the subtropical ridge over the Gulf of Mexico and
a large deep-layer ridge over the western United States, with a
large trough in the westerlies weakening the Gulf ridge just enough
to allow an east-southeastward motion. The large-scale models
suggest that the westerlies should erode the western ridge to some
extent during the forecast period, which should allow Harvey to
turn north-northeastward under the greater influence of the Gulf
ridge. The track guidance has changed little since the previous
advisory except to show a faster motion from 96-120 h. The new
forecast track remains close to that of the previous track, except
for an increased forward speed by 120 h.


Key Messages:

1. Ongoing catastrophic and life-threatening flooding will continue
across southeastern Texas. Additional rainfall accumulations of 15
to 25 inches are expected across the upper Texas coast, with
isolated storm totals as high as 50 inches. Please heed the advice
of local officials. Do not attempt to travel if you are in a safe
place, and do not drive into flooded roadways. Refer to products
from your local National Weather Service office and the NOAA Weather
Prediction Center for more information on the flooding hazard. A
summary of rainfall totals compiled by the Weather Prediction Center
can be found at: http://www.wpc.ncep.noaa.gov/discussions/nfdscc1.html

2. The flood threat is spreading farther east into Louisiana.
Additional rainfall amounts of 15 to 25 inches are expected in
southwestern Louisiana, with rainfall amounts of 5 to 15 inches
expected in south-central Louisiana and 5 to 10 inches in
southeastern Louisiana. Please heed the advice of local officials
and refer to products from your local National Weather Service
office and the NOAA Weather Prediction Center for more information
on the flooding hazard in these areas.

3. While Tropical Storm Warnings have been extended eastward along
the coast of Louisiana and a Storm Surge Watch has been issued, the
impacts of winds and storm surge are expected to be secondary
compared to that of the rains.


FORECAST POSITIONS AND MAX WINDS

INIT 28/2100Z 28.5N 95.7W 40 KT 45 MPH
12H 29/0600Z 28.4N 95.5W 40 KT 45 MPH
24H 29/1800Z 28.6N 95.0W 40 KT 45 MPH
36H 30/0600Z 29.2N 94.5W 40 KT 45 MPH
48H 30/1800Z 30.3N 94.1W 35 KT 40 MPH...INLAND
72H 31/1800Z 32.5N 93.0W 30 KT 35 MPH...INLAND
96H 01/1800Z 34.5N 91.5W 25 KT 30 MPH...INLAND
120H 02/1800Z 37.0N 89.0W 20 KT 25 MPH...POST-TROP/INLAND

$$
Forecaster Beven
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BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Houston/Galveston TX
403 PM CDT MON AUG 28 2017

The National Weather Service in League City has issued a

* Flash Flood Warning for...
Wharton County in southeastern Texas...
Southeastern Austin County in southeastern Texas...
South central Montgomery County in southeastern Texas...
Fort Bend County in southeastern Texas...
Northwestern Brazoria County in southeastern Texas...
Northern Chambers County in southeastern Texas...
Southeastern Waller County in southeastern Texas...
Southwestern Liberty County in southeastern Texas...
Northwestern Matagorda County in southeastern Texas...
Harris County in southeastern Texas...

* Until 700 PM CDT.

* At 401 PM CDT, Doppler radar indicated rain and isolated
thunderstorms. Although peak rainfall intensities are around 1
inch per hour, it will be falling over already saturated ground
and flooded areas and lead to additional rises.

* Some locations that will experience flooding include...
Northwestern Pasadena, Sugar Land, Baytown, Missouri City, Deer
Park, Rosenberg, Stafford, South Houston, Bellaire, Humble, West
University Place, Katy, Richmond, El Campo, Galena Park, Jacinto
City, Wharton, Jersey Village, Brookshire and Hunters Creek
Village.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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srainhoutx
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New Mesoscale Precipitation Discussion about to be issued. Will edit when graphics and text is available.
08282017 mcd0754.gif
MESOSCALE PRECIPITATION DISCUSSION 0754
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
500 PM EDT MON AUG 28 2017

AREAS AFFECTED...UPPER TX COAST

CONCERNING...HEAVY RAINFALL...FLASH FLOODING LIKELY

VALID 282100Z - 290130Z

SUMMARY...ADDITIONAL RAINFALL AMOUNTS OF 3.00 TO 6.00 INCHES OVER
PORTIONS OF THE UPPER TX COAST WILL EXACERBATE ONGOING FLOODING
CONCERNS INTO THE EVENING HOURS.

DISCUSSION...THE GOES-16 CLEAN IR LOOP SHOWED COOLING TOPS NORTH
OF THE CENTER OF HARVEY...IN THE AXIS OF BEST MID LEVEL
DEFORMATION. WHILE THE RADAR PRESENTATION IS NOT AS DISTINCT WITH
THE CONVECTION OCCURRING ALONG THE DEFORMATION ZONE...2.50 INCH
PRECIPITABLE WATER AIR IN THE COLUMN SUGGESTS THAT WARM RAIN
PROCESSES ARE DOMINANT.

HOURLY RAINFALL RATES ARE GENERALLY NEAR AN INCH WITH THE LOWER
TOPPED CONVECTION (BASED ON THE HGX RADAR)...THOUGH LOCALLY HIGHER
AMOUNTS ARE POSSIBLE WHERE THE INSTABILITY BECOMES MORE SURFACE
BASED. THIS IS MOST LIKELY OVER JEFFERSON COUNTY TX...WHERE HOURLY
RAINFALL RATES COULD PEAK NEAR 2.00 INCHES.

THE DEFORMATION ZONE IS EXPECTED TO DROP SLOWLY SOUTH DURING INTO
THE EVENING HOURS. EVEN RELATIVELY MODEST HOURLY RAINFALL RATES
NEAR AN INCH OR SO COULD RESULT IN AN 3.00 TO 6.00 INCHES OF
ADDITIONAL RAINFALL THROUGH 01Z...WITH THE HIGHEST AMOUNTS
POSSIBLY AFFECTING THE NORTHERN HOUSTON METRO AREA. THESE AMOUNTS
ARE SUPPORTED BY THE MOST RECENT HRRR...AS WELL AS THE 12Z WRF
ARW.

THE ADDITIONAL RAINFALL WILL EXACERBATE ONGOING FLOODING...OR
PRODUCE NEW FLOODING OVER SATURATED SOILS INTO THE EVENING HOURS.

HAYES

ATTN...WFO...EWX...HGX...LCH...
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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srainhoutx wrote:
Snowman wrote:
srainhoutx wrote:Updated 3 Day Quantitative Precipitation Forecast Outlook from the Weather Prediction Center.
Srain do you really think that we are going to get another 15 inches of rain in the next couple of days? It looks like the heaviest rain is shifting east and the storm is choking on dry air. Unless something major changes I don't see how we get 15-20 more inches of rain
We have witnessed the rapid changes throughout the history of Harvey. Many...including some on air Meteorologists yesterday stated they were hopeful the worst was over due to dry air entrainment. We see today that Harvey and nature had other ideas. Those Catastrophic QPF totals are now verifying. Even the most seasoned and typically conservative Professional Meteorologists are in awe of what Harvey has brought to our Region. Prepare for the worst...which is occurring at this time...and pray/hope for the best.
The center of circulation appears right on the coast. Harvey appears to be strengthening. Weak steering.

https://earth.nullschool.net/#current/w ... 690,29.970

GFS sees Harvey stationary until Wednesday. Canadian agrees. Same for Naval. No better for NOAA.NAM only moves Harvey into east Texas on Wednesday. The only difference is whether the center of Harvey is on the coast or 20 or 50 miles off the shore. The center appears to be one Freeport now.

The winds and rain are picking up here in CLL after a break this am. Stay safe down in Houston and hope rains are light.

Image

Image

https://earth.nullschool.net/#current/w ... 690,29.970
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The dry slot has shifted from last night, which isn't very funny. What was seen as the end has now become the most enriched area of this storm. That darn Gulf sure affects these storms which just suck up that warm gulf water. If this monster stalls just a fraction here or there can make all the difference in who gets what tonight, tomorrow. I'm leaving my truck as elevated as I can get it because this isn't over by any stretch. Remember, the forecast didn't have us getting the catastrophic flooding until about 24 hours after we already got it. Meteorologist, my heart goes out to you predicting something so unpredictable.
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Tropical Storm Harvey Local Statement Advisory Number 34
National Weather Service Houston/Galveston TX AL092017
430 PM CDT Mon Aug 28 2017

This product covers Southeast Texas

**LIFE-THREATENING FLOODING CONTINUES OVER SOUTHEASTERN TEXAS**


NEW INFORMATION
---------------

* CHANGES TO WATCHES AND WARNINGS:
- A Storm Surge Watch has been issued for Chambers and Galveston

* CURRENT WATCHES AND WARNINGS:
- A Tropical Storm Warning is in effect for Brazoria, Harris,
Jackson, Liberty, and Matagorda
- A Tropical Storm Warning and Storm Surge Watch are in effect
for Chambers and Galveston

* STORM INFORMATION:
- About 80 miles southwest of Galveston TX or about 20 miles
east-southeast of Matagorda TX
- 28.5N 95.7W
- Storm Intensity 45 mph
- Movement East-southeast or 110 degrees at 3 mph

SITUATION OVERVIEW
------------------

The life-threatening flooding event around the Houston metro continues
today with water rescues and evacuations still occurring in the area.
Per observations, a widespread 2 to 5 inches of rain has still fallen
in the past 6 hours across areas from SE Harris County southwestward to
northern Matagorda County. Given the completely saturated ground, this
amount of rainfall and future expected heavy rainfall will keep the
flooding threat at the forefront of this storm. Tornadoes have been a
threat the last couple of days and while there is still a threat today,
the overall threat is less than the last couple of days. Elevated
tides will cause the recession of coastal flood waters to be slow,
likely lasting into the first part of the week. As Harvey drifts just
off the Upper Texas Coast, the potential for tropical storm force winds
will also extend up the coastline. Ultimately, of the multiple hazards
present with this storm, the greatest threat to life and property
remains the ongoing extreme rainfall and its consequent prolonged and
catastrophic flash flooding event.

POTENTIAL IMPACTS
-----------------

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
southeast Texas. Remain well guarded against life-threatening flood
waters having catastrophic impacts. If realized, these impacts include:
- Extreme rainfall flooding may prompt numerous evacuations and
rescues.
- Rivers and tributaries may overwhelmingly overflow their banks
in many places with deep moving water. Small streams, creeks,
canals, and ditches may become raging rivers. Flood control
systems and barriers may become stressed.
- Flood waters can enter numerous structures within multiple
communities, some structures becoming uninhabitable or washed
away. Numerous places where flood waters may cover escape
routes. Streets and parking lots become rivers of raging water
with underpasses submerged. Driving conditions become very
dangerous. Numerous road and bridge closures with some weakened
or washed out.


* TORNADOES:
Potential impacts from tornadoes are still unfolding across coastal
areas of Southeast Texas. Remain well braced against a tornado event
having limited impacts. If realized, these impacts include:
- The occurrence of isolated tornadoes can hinder the execution
of emergency plans during tropical events.
- A few places may experience tornado damage, along with power
and communications disruptions.
- Locations could realize roofs peeled off buildings, chimneys
toppled, mobile homes pushed off foundations or overturned,
large tree tops and branches snapped off, shallow-rooted trees
knocked over, moving vehicles blown off roads, and small boats
pulled from moorings.

Elsewhere across Southeast Texas, little to no impact is anticipated.

* SURGE:
Potential impacts from the main surge event are now unfolding across
Galveston Bay and the Upper Texas Coast. Remain well away from locally
hazardous surge having limited impacts. If realized, these impacts
include:
- Localized inundation with storm surge flooding mainly along
immediate shorelines and in low-lying spots, or in areas
farther inland near where higher surge waters move ashore.
- Sections of near-shore roads and parking lots become overspread
with surge water. Driving conditions dangerous in places where
surge water covers the road.
- Moderate beach erosion. Heavy surf also breaching dunes, mainly
in usually vulnerable locations. Strong rip currents.
- Minor to locally moderate damage to marinas, docks, boardwalks,
and piers. A few small craft broken away from moorings.

Elsewhere across Southeast Texas, little to no impact is anticipated.

* WIND:
Potential impacts from the main wind event are now unfolding across
Southeast Texas. Remain well sheltered from hazardous wind having
limited impacts. If realized, these impacts include:
- Damage to porches, awnings, carports, sheds, and unanchored
mobile homes. Unsecured lightweight objects blown about.
- Many large tree limbs broken off. A few trees snapped or
uprooted, but with greater numbers in places where trees are
shallow rooted. Some fences and roadway signs blown over.
- A few roads impassable from debris, particularly within urban
or heavily wooded places. Hazardous driving conditions on
bridges and other elevated roadways.
- Scattered power and communications outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------

* EVACUATIONS:
Do not return to evacuated areas until hazardous winds diminish and
flood waters abate.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to remain safely sheltered from the storm. Stay
inside and away from windows. Listen for updates and be ready in case
you lose electrical power. Locate your battery powered radio and
flashlight from your Emergency Supplies Kit. Keep these items close.

During the peak of the storm, keep your shoes on and rain gear handy.
Boots and tennis shoes offer the best foot protection if you become
unexpectedly exposed to the elements.

Continue to keep your cell phone well charged for as long as
possible. If you lose power, use it more sparingly and mainly for
personal emergencies and check-ins. Do not overload communications
systems with idle chatter.

Do not venture outside while in the eye of a hurricane. Within the
eye, weather conditions may temporarily improve which can be
misleading. Once the eye passes, the wind will change direction and
return to dangerous speeds. Heavy rain will also return. Be smart and
remain safely hidden from the storm.

Do not be a thrill seeker or risk your life for senseless photos or
videos. Be wise and avoid becoming another statistic.

Be ready to move to the identified safe room if your home or shelter
begins to fail. Quickly move to an interior room on the lowest floor.
Put as many sturdy walls between you and the storm as you can.
Protect your head and body.

* ADDITIONAL SOURCES OF INFORMATION:
- For information on appropriate preparations see ready.gov
- For information on creating an emergency plan see getagameplan.org
- For additional disaster preparedness information see redcross.org

NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in Houston/Galveston TX around 1030 PM CDT, or sooner if
conditions warrant.

Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

Member: National Weather Association
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Twitter @WeatherInfinity
User avatar
Rip76
Posts: 1790
Joined: Mon Feb 15, 2010 12:38 am
Location: The Woodlands
Contact:

Finally, finally getting a break here in Pearland.
joestephens
Posts: 2
Joined: Sun Aug 27, 2017 9:20 pm
Contact:

The water release from Barker and Addicks does seem to be proceeding in an orderly and non-precipitous manner. For instance, for Buffalo Bayou at Dairy Ashford, from 12:09 to 3:51 PM today, the levels increased from 75.21 feet to 74.67 feet. That's .46 feet or about 6 inches.

And that while we are having a fairly healthy dose of rain. I don't know what everyone thinks about 6 inches, but since a good portion has to be attributable to rainfall, it all seems pretty measured.

Of course, I don't want those 6 inches in my house.
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