April 2016 Recap: Regional Flood/Severe Weather

[wxman57]

Does anyone know if we can get into downtown? ? I need to get to Louisiana street. From 1-10 to Smith street. Thanks!

Unless it's a life-threatening emergency, I'd suggest you stay put.

[srainhoutx]

Does anyone know if we can get into downtown? ? I need to get to Louisiana street. From 1-10 to Smith street. Thanks!

Looks like the exits are under water. White Oak and Buffalo Bayou's are still rising.

[wxman57]

STAY HOME, PEOPLE!!!

I can't believe all the idiots driving around the city. Emergency personnel are rescuing people all over Harris County. You don't need to get to work today, your job will still be there tomorrow. I can't even get to the office and I'm a meteorologist. Another round of heavy rain is moving in now. Don't become a flooding victim - stay put!

[texoz]

Not sure if I've ever seen this, an unbroken chain of TX counties stretching from Uvalde to north of Conroe. Maybe during a tropical storm, but don't ever recall seeing an area that large under flood warning.

[tireman4]

Wow. Just wow. The rainfall rates for two hours this morning were staggering. Houston Community College and Humble ISD are closed today. Vivid lightning and thunder to accompany it. We are safe ( high part of the subdivision) and the water is draining. I agree with Wxman 57. Please stay off the roads. Please. There is more coming and you do not want to get caught.

[davidiowx]

STAY HOME, PEOPLE!!!

I can't believe all the idiots driving around the city. Emergency personnel are rescuing people all over Harris County. You don't need to get to work today, your job will still be there tomorrow. I can't even get to the office and I'm a meteorologist. Another round of heavy rain is moving in now. Don't become a flooding victim - stay put!

Seriously!! What are these people thinking.. smh.

[davidiowx]

Looks like the line is steadily heading south towards the Gulf of Mexico. Heaviest rain seems to be over for me. At least for the time being. Time to look west and see what develops out there.

My work has told all of us to stay home for the day. Which is nice!

[Texaspirate11]

Call 311 if your home is flooding
911 for ONLY life and death situations
Emergency responders are overwhelmed
Help them by staying home and making good decisions.

[srainhoutx]

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
903 AM CDT MON APR 18 2016

...FLASH FLOOD EMERGENCY FOR HOUSTON AND SURROUNDING AREAS...

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
NORTHERN COLORADO COUNTY IN SOUTHEASTERN TEXAS...
SOUTH CENTRAL WASHINGTON COUNTY IN SOUTHEASTERN TEXAS...
NORTHWESTERN LIBERTY COUNTY IN SOUTHEASTERN TEXAS...
SOUTHWESTERN SAN JACINTO COUNTY IN SOUTHEASTERN TEXAS...
WALLER COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN GRIMES COUNTY IN SOUTHEASTERN TEXAS...
MONTGOMERY COUNTY IN SOUTHEASTERN TEXAS...
WESTERN HARRIS COUNTY IN SOUTHEASTERN TEXAS...
AUSTIN COUNTY IN SOUTHEASTERN TEXAS...
NORTHERN FORT BEND COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 100 PM CDT

* AT 900 AM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA.
WIDESPREAD 6 TO 12 INCHES OF RAIN HAVE FALLEN WITH AREAS OF 15
INCHES OF RAIN OR MORE. LIFE THREATENING FLASH FLOODING IS
ONGOING WITH MANY FLOODED ROADS...BAYOUS AND LOW LYING AREAS.

THIS IS A FLASH FLOOD EMERGENCY FOR HOUSTON AND SURROUNDING AREAS.
THIS IS A PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SUGAR LAND...MISSOURI CITY...SOUTHERN CONROE...EASTERN ROSENBERG...
STAFFORD...BELLAIRE...HUMBLE...WEST UNIVERSITY PLACE...KATY...RICHMOND...
TOMBALL...CLEVELAND...JERSEY VILLAGE...SEALY...HEMPSTEAD...PRAIRIE VIEW...
BROOKSHIRE...HUNTERS CREEK VILLAGE...BELLVILLE AND COLUMBUS.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES OF RAIN ARE POSSIBLE IN
THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. THIS IS AN EXTREMELY DANGEROUS AND
LIFE-THREATENING SITUATION. DO NOT ATTEMPT TO TRAVEL UNLESS YOU ARE
FLEEING AN AREA SUBJECT TO FLOODING OR UNDER AN EVACUATION ORDER.

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES. STAY OFF AREA ROADS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

[Katdaddy]

So far 3.27" in League City with Magnolia Creek rising.

[nuby3]

that next disturbance looks formidable.. situation looks very serious at the moment does it not?

[DoctorMu]

290 CLOSED in Waller Co. STAY OFF THE ROADS FOLKS!!!



Dumb 'ol Aggies still having class with lightning and a Flash Flood Warning in effect. We've been spared super heavy rains (3.1 in IMBY), but this event won't subside all day.

[unome]

anyone hear how Addicks and Barker Dams are faring ?

this is a recent story on them https://www.houstonpublicmedia.org/arti ... high-risk/

http://www.swg.usace.army.mil/Missions/ ... ogram.aspx

[srainhoutx]

Update from Jeff:

THIS IS A LIFE THREATENING SITUATION!

Devastating flash flood event continues over Harris County with at least 13 out of 22 watersheds overbanks and flooding structures:

Rainfall amounts of 8-12 inches have occurred across much of northwest Harris County with amounts of 12-15 inches over the extreme NW part of the county into Waller County. Much of the rest NW of the extreme SE part has received 4-6 inches.

Major Flooding (homes):

Cypress Creek
Willow Creek
Little Cypress Creek
White Oak Bayou
Greens Bayou
Brays Bayou (US 59 to 610)
Willow Water hole
Keegans Bayou
Halls Bayou
Horsepen Creek
Langham Creek
Bear Creek
South Mayde Creek

House Flooding:

Have at least 100 subdivisions with reported house flooding

[srainhoutx]

From Jeff:

Busting the record on Langham Creek at W LT York by 2.0 ft. Devastating flooding

Record flood levels on Bear Creek at Clay Rd

[srainhoutx]

EXCESSIVE RAINFALL DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1036 AM EDT MON APR 18 2016

...VALID 15Z MON APR 18 2016 - 12Z TUE APR 19 2016...
...REFERENCE AWIPS GRAPHIC UNDER...DAY 1 EXCESSIVE RAINFALL...


SLIGHT RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM
25 SE ELD 20 ESE ACP 15 ENE 7R5 25 NE KMIU 10 SW KOPM 20 E BRO
20 WSW MMMA 55 S MMNL 20 SW MMPG 30 WSW E29 40 SW SPS 25 E CQB
GMJ 35 NNW HRO 30 E RUE 25 SE ELD.

MODERATE RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM
25 WNW HBV 25 SE T82 30 SSE CRS 25 NE OCH POE LCH 25 ESE LBX
20 WNW KMIU 35 SSE NQI 25 WNW HBV.

HIGH RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM
20 WSW 3T5 30 ENE CXO 25 W BPT LBX 15 WSW PKV 55 W VCT
20 WSW 3T5.


15Z UPDATE...

AFTER EVALUATING THE RECENT RADAR/SATELLITE TRENDS AND
OBSERVATIONAL DATA...DID NOT SEE ANY REASON TO CHANGE THE
OVERNIGHT EXCESSIVE RAINFALL OUTLOOK. SECTIONS OF THE HIGH RISK
AREA OUTLINED HAVE BEEN EXPERIENCING HOURLY RAINFALL RATES IN THE
2 TO 3 INCH RANGE WITH ISOLATED OCCURRENCES NEARING 4 INCHES. THIS
HAS ALREADY LED TO WIDESPREAD FLASH FLOODING WHICH HAS INCLUDED A
NUMBER OF WATER RESCUES. OVER THE PAST SEVERAL HOURS...THE
CONVECTIVE COMPLEX HAS GRADUALLY NOSED SOUTHWARD WITH HEAVY
RAINFALL SPREADING TO LOCATIONS SOUTH OF I-10 ACROSS SOUTHEASTERN
TX. UNFORTUNATELY...AVAILABLE CAMS THIS MORNING HAVE NOT BEEN OF
MUCH ASSISTANCE GIVEN THEIR POOR HANDLING OF CURRENT ACTIVITY. THE
12Z EXPERIMENTAL-HRRR WAS THE CLOSEST TO REALITY WHICH SHOWS A
REASONABLE EVOLUTION OF PERSISTENT WEST-SOUTHWEST TO
EAST-NORTHEAST CONVECTION AFFECTING SOUTHEASTERN TX THROUGH THE
AFTERNOON HOURS. THIS WILL CONTINUE TO SUPPORT HEAVY RAINFALL
ACROSS MANY LOCATIONS CURRENTLY EXPERIENCING FLASH FLOOD
CONDITIONS.

RUBIN-OSTER

[Stormrider]

Rain beginning to fall in Galveston. Concerned that the high tides will aggivate possible flooding.

[srainhoutx]

MESOSCALE PRECIPITATION DISCUSSION 0129
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1055 AM EDT MON APR 18 2016

AREAS AFFECTED...SOUTHEAST TX...SOUTHWEST LA

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

VALID 181452Z - 181900Z

SUMMARY...VERY INTENSE RAINFALL WILL CONTINUE ACROSS SOUTHEAST TX
THOUGH EARLY AFTERNOON AS SHOWERS AND THUNDERSTORMS PERSIST.

DISCUSSION...THE LATEST GOES-14 SRSO VIS IMAGERY SHOWS AN
EXPANSIVE AREA OF THUNDERSTORMS ACROSS SOUTHEAST TX WHICH ARE
PRODUCING VERY INTENSE RAINFALL RATES. ALREADY THERE HAVE BEEN
OBSERVATIONS OF 15 TO 20 INCHES OF RAIN ACROSS THE NORTHWEST
SUBURBS OF THE HOUSTON METROPOLITAN AREA GOING BACK TO LAST
EVENING GIVEN THE INCREDIBLY SLOW MOVEMENT AND REPEATING NATURE OF
THE CONVECTION.

THERE HAS BEEN SOME EVIDENCE OF A GRADUAL SOUTH AND EAST PUSH TO
THE CONVECTION OVER THE LAST COUPLE OF HOURS...AND THE GOES-14
SRSO VIS IMAGERY SHOWS A WELL-DEFINED OUTFLOW BOUNDARY
REPRESENTING THE LEADING EDGE OF THE CONVECTION. LARGER SCALE
FORCING CONTINUES OVER THE REGION AS RIGHT-ENTRANCE REGION JET
FORCING IS IN PLACE ASSOCIATED WITH A 90-110 KT JET MAX RIDING UP
THE EASTERN FLANK OF THE UPPER LOW OVER THE CENTRAL ROCKIES.
MEANWHILE...THERE CONTINUES TO BE A FEED OF VERY MOIST AND RATHER
UNSTABLE AIR LIFTING NORTH OUT OF THE WESTERN GULF OF MEXICO.
PWATS OF 1.7 TO 1.9 INCHES AND MUCAPE VALUES OF 2000 TO 2500 J/KG
ARE NOTED OVER THE WESTERN GULF OF MEXICO AND THIS WILL CONTINUE
TO LIFT NORTH INTO OUTFLOW BOUNDARY AND WILL SUSTAIN CONVECTIVE
DEVELOPMENT OVER THE NEXT SEVERAL HOURS WITH VERY SLOW CELL MOTION.

THE HIRES MODELS HAVE BEEN DOING A VERY POOR JOB IN ACCURATELY
DEPICTING THE CONVECTIVE EVOLUTION THIS MORNING...BUT ONE AREA OF
AGREEMENT IS THAT THERE SHOULD A TENDENCY FOR CONVECTION TO LOSE
SOME OF ITS ORGANIZATION GOING THROUGH EARLY AFTERNOON. THIS WILL
BE A RESULT OF THE AFOREMENTIONED JET DYNAMICS ALOFT STARTING TO
LIFT OUT TO THE NORTH AND AWAY FROM SOUTHEAST TX COUPLED WITH SOME
DECREASE IN THE LOW LEVEL INFLOW OFF THE GULF OF MEXICO.
NEVERTHELESS...EXPECT ADDITIONAL RAINFALL RATES OF UP TO 3
INCHES/HR...AND ADDITIONAL TOTALS LOCALLY OF UP TO 6 INCHES GOING
THROUGH 19Z. THIS WILL LIKELY PRODUCE SIGNIFICANT FLASH FLOODING.

ORRISON

ATTN...WFO...CRP...EWX...HGX...LCH...SHV...

[DoctorMu]

Rain beginning to fall in Galveston. Concerned that the high tides will aggivate possible flooding.

Heavy band of rain is moving south. Fort Bend, Brazoria, Galveston Cos. should be tuned to NOAA Radio, online NWS reports, multimedia meteorologists for the latest.

[unome]

anyone considering heading out on the roads, check out Darby Douglas' Twitter feed:

https://twitter.com/DarbyKHOU