July Weather Discussion

[wxdata]

WGUS54 KHGX 022222
FFWHGX
TXC201-339-030115-
/O.NEW.KHGX.FF.W.0018.100702T2222Z-100703T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
522 PM CDT FRI JUL 2 2010

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
HARRIS COUNTY IN SOUTHEAST TEXAS...
SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST TEXAS...

* UNTIL 815 PM CDT

* AT 514 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT FLASH FLOODING WAS LIKELY FROM THUNDERSTORMS ALONG A LINE
EXTENDING FROM PORTER TO PASADENA. ANOTHER CLUSTER OF STRONG STORMS
PRODUCING HEAVY RAIN WILL AFFECT AREAS FROM ADDICKS TO JERSEY
VILLAGE. ANOTHER INCH OF RAIN WILL BE POSSIBLE BY 630 PM WITH SOME
ISOLATED AREAS PICKING UP ANOTHER 2 TO 2.5 INCHES OF RAIN.

* LOCATIONS IN THE FLOOD WARNING INCLUDE BUT ARE NOT LIMITED TO THE
MEDICAL CENTER...SPLASHTOWN...SAN JACINTO STATE PARK...RELIANT
PARK...NEW CANEY...MINUTE MAID PARK...MEMORIAL...LAKE HOUSTON
DAM...JOHNSON SPACE CENTER...HOOKS AIRPORT...HOBBY AIRPORT...HERMAN
PARK...THE GALLERIA...ELLINGTON FIELD...BUSH-INTERCONTINENTAL
AIRPORT...ADDICKS...WOODBRANCH...WEST UNIVERSITY PLACE...WEBSTER...
TOMBALL...THE WOODLANDS...SPRING VALLEY...SPRING...SPLENDORA...
SOUTHSIDE PLACE...SOUTH HOUSTON...SHENANDOAH...SHELDON...ROMAN
FOREST...PORTER HEIGHTS...PINEY POINT VILLAGE...PATTON VILLAGE...
OAK RIDGE NORTH...LA PORTE...KINGWOOD...JERSEY VILLAGE...JACINTO
CITY...HUNTERS CREEK VILLAGE...HUMBLE...HOUSTON...HILSHIRE
VILLAGE...HIGHLANDS...HEDWIG VILLAGE...GALENA PARK...DEER PARK...
CROSBY...CLOVERLEAF...CHATEAU WOODS...CHANNELVIEW...BUNKER HILL
VILLAGE...BELLAIRE...BAYTOWN...BARRETT AND ALDINE.

[wxdata]

WGUS44 KHGX 022242
FLWHGX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON, TX
542 PM CDT FRI JUL 2 2010

...THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A FLOOD WARNING
FOR THE FOLLOWING RIVERS...

GARNERS BAYOU AT BELTWAY 8 AFFECTING HARRIS COUNTY
HUNTING BAYOU AT LOCKWOOD DRIVE AFFECTING


EXCESSIVE RAINFALL FROM TRAINING THUNDERSTORMS OVER HARRIS COUNTY HAVE PRODUCED
SIGNIFICANT RISES ON GARNERS AND HUNTING BAYOUS..

[Mr. T]

bye bye

[Mr. T]

Looks like rainfall intensity is beginning to lessen greatly over the hardest hit areas... Hopefully we can see a bit of a lull this evening. We will have to watch for redevelopment overnight along a boundary which looks to be situated along the Hwy 59 corridor at the moment

[svrwx0503]

Streets are all flooded in my neighborhood....this is only the 3rd time I have seen this over the past 15 years. We have gotten about 3'' of rain over the past hour to hour and a half and more rain continues to train up out of northern Ft. Bend county.

[wxdata]

From Jeff-

-Buffalo Bayou downtown at Milam at the confluence of White Oak and Buffalo is 3.3 feet from going out. Will impact areas behind the Spaghetti Warehouse

-Cowart Creek is nearing bankfull

-Chigger Creek is out

-Greens is out at Tidwell and about a foot at E Mt Houston from going out

-S Mayde at Greenhouse: .5ft overbanks..Flooding of Greenhouse is likely

[texaskaz]

Hope you don't mind a bit off topic.. Going to Austin tomorrow....does anyone know how the rivers are ( Pedernales or Guadelupe) ? The flash flood sign always scares me at Perdernales!

Thanks for any replies!

[Ptarmigan]

Quite a rain event today. This likely the biggest rain even this year.

[Mr. T]

Hope you don't mind a bit off topic.. Going to Austin tomorrow....does anyone know how the rivers are ( Pedernales or Guadelupe) ? The flash flood sign always scares me at Perdernales!

Thanks for any replies!

Rainfall has been much less to our NW, so everything around that region is ok, as of now...

[Mr. T]

IAH has recieved 5.28" of rain so far today (as of 6 pm).

This is more rain than all of last month's total (3.75") and also more than March and April combined (4.69")

We are now just under 1 in. below the normal amount for the YTD.

[Ptarmigan]

IAH has recieved 5.28" of rain so far today (as of 6 pm).

This is more rain than all of last month's total (3.75") and also more than March and April combined (4.69")

We are now just under 1 in. below the normal amount for the YTD.

All I can say is Dios Mios!

[Mr. T]

IAH has recieved 5.28" of rain so far today (as of 6 pm).

This is more rain than all of last month's total (3.75") and also more than March and April combined (4.69")

We are now just under 1 in. below the normal amount for the YTD.

Just saw that the wettest July day on record is 5.4" on the 13th in 2002. We are oh so close!

2nd wettest day is 5.22" on the 27th in 1943. We have already passed that.

Also, the wettest July day on record at Hobby is 7.07" on the 7th in 1973. They are in no danger of breaking that record today, as they have only recieved 4.89" of rain today and the heaviest rain is now out of that area.

[Ptarmigan]

IAH has recieved 5.28" of rain so far today (as of 6 pm).

This is more rain than all of last month's total (3.75") and also more than March and April combined (4.69")

We are now just under 1 in. below the normal amount for the YTD.

Just saw that the wettest July day on record is 5.4" on the 13th in 2002. We are oh so close!

2nd wettest day is 5.22" on the 27th in 1943. We have already passed that.

Officially. July also had Tropical Storm Claudette in 1979. Hobby had 10 inches from Claudette, while Alvin had 45 inches.

[Mr. T]

Officially. July also had Tropical Storm Claudette in 1979. Hobby had 10 inches from Claudette, while Alvin had 45 inches.

Right, but I'm talking about the wettest days on record. The 10 in. at Hobby fell on two seperate days. 4.88" on the 25th and 5.51" on the 26th in 1979.

That would definitely be the greatest two day event on record

[Ptarmigan]

Right, but I'm talking about the wettest days on record. The 10 in. at Hobby fell on two seperate days. 4.88" on the 25th and 5.51" on the 26th in 1979.

That would definitely be the greatest two day event on record

True, but the Hobby one was during a 24 hour period from Claudette. You raise a good point. Today is the heaviest rain in one calendar day unlike in 1979 at Hobby.

[Mr. T]

True, but the Hobby one was during a 24 hour period from Claudette. You raise a good point. Today is the heaviest rain in one calendar day unlike in 1979 at Hobby.

Right. It's just a statistical anomaly created by our use of the calendar and time. A more significant way to look at the heaviest rainfall events would obviously be "event records" (such as Claudette in '79) rather than "daily records" as those are restricted by 12 am to 12 am...

[texaskaz]

Mr. T...thanks for the info!

[Mr. T]

IAH has 5.37" through 7 pm. We only need 0.03" to tie the record daily rainfall for IAH for the month of July...

Light to moderate rain is still falling over the airport, but the rain is almost about to move out of the area. It will be close....

[Ptarmigan]

Right. It's just a statistical anomaly created by our use of the calendar and time. A more significant way to look at the heaviest rainfall events would obviously be "event records" (such as Claudette in '79) rather than "daily records" as those are restricted by 12 am to 12 am...

As for the resident statistical specialist, I prefer 24 hours for record and statistical purposes.

[wxdata]

Finally some good news!

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
727 PM CDT FRI JUL 2 2010

TXC039-157-030035-
/O.EXP.KHGX.FF.W.0017.000000T0000Z-100703T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FORT BEND TX-BRAZORIA TX-
727 PM CDT FRI JUL 2 2010

...THE FLASH FLOOD WARNING WILL EXPIRE AT 730 PM CDT FOR...
BRAZORIA COUNTY IN SOUTHEAST TEXAS...
FORT BEND COUNTY IN SOUTHEAST TEXAS...

SHOWERS AND THUNDERSTORMS HAVE WEAKENED AND MOVED NORTH OUT OF
THE AREA. MOTORISTS SHOULD CONTINUE TO EXERCISE CAUTION DUE TO
CONTINUED PONDING OF WATER ON AREA ROADWAYS. A FLOOD WATCH IS
IN EFFECT UNTIL MIDNIGHT FOR THE AREA.