Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 11, NWS Houston/Galveston, TX

April 18, 20094 counties in Texas

NWS Houston/Galveston, TX issued this flash flood warning at Apr 18, 2009, 4:15 PM CDT for 4 counties in Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 18, 2009, 4:15 PM CDT (21:15 UTC)
Expired: Apr 18, 2009, 7:15 PM CDT
In force: 3 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

Counties Brazoria County, TX, Chambers County, TX, Galveston County, TX, Harris County, TX

The radar

The Houston radar (KHGX), 4 km from the middle of the area, began a volume at 21:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Apr 18, 3:23 PM CDT, 52 minutes earlier.

Area forecast discussion, Apr 18, 3:23 PM CDT, 52 minutes before

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Hazardous weather outlook, Apr 18, 3:44 AM CDT, 12 hours 31 minutes before

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In the hours before

Local storm report, Apr 18, 3:26 PM CDT, 49 minutes before

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Local storm report, Apr 18, 3:33 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
333 PM CDT SAT APR 18 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0306 PM     FLASH FLOOD      FRIENDSWOOD             29.51N 95.20W
04/18/2009                   GALVESTON          TX   AMATEUR RADIO

            ROADWAY FLOODING AT FM 528 AND FM 518. NEARBY GAUGE HAD
            2.32 INCHES OF RAIN WITHIN 30 MINUTES.

&&

CMM

Local storm report, Apr 18, 3:37 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
337 PM CDT SAT APR 18 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0335 PM     FLASH FLOOD      FRIENDSWOOD             29.51N 95.20W
04/18/2009                   GALVESTON          TX   MESONET

            FLOOD CONTROL DISTRICT RAIN GAUGE AT FM 528 AND CLEAR
            CREEK ONE HOUR RAINFALL TOTAL OF 6.02 INCHES.

&&

CMM

Local storm report, Apr 18, 3:48 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
348 PM CDT SAT APR 18 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0347 PM     FLASH FLOOD      FRIENDSWOOD             29.51N 95.20W
04/18/2009                   GALVESTON          TX   TRAINED SPOTTER

            BUTTONWOOD AND LAKE FOREST DRIVE 26 INCHES OF WATER IN
            THE ROAD. STREETS IMPASSABLE.

&&

CMM

Local storm report, Apr 18, 3:49 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
349 PM CDT SAT APR 18 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0347 PM     FLASH FLOOD      FRIENDSWOOD             29.51N 95.20W
04/18/2009                   GALVESTON          TX   AMATEUR RADIO

            ONE FOOT OF WATER IN ROAD ON MEADOWBEND PARKWAY. ROADS
            IMPASSABLE TO TRAFFIC.

&&

CMM

Local storm report, Apr 18, 4:10 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
410 PM CDT SAT APR 18 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     FLASH FLOOD      HOUSTON                 29.77N 95.39W
04/18/2009                   HARRIS             TX   TRAINED SPOTTER

            FEEDER ROADS FLOODED AT INTERSTATE 45 AND ALMEDA ROAD.
            PARKING LOTS FLOODED AT ALMEDA MALL AND NEARBY RETAIL
            SHOPS WITH SOME WATER INTO BUILDINGS. NUMEROUS CARS
            STRANDED.

&&

CMM

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 17, 9:25 PM CDT	River Flood Warning	HGX	Jackson, Lavaca	3 days
Apr 17, 9:25 PM CDT	River Flood Warning	HGX	Jackson, Lavaca	4 days
Apr 17, 9:25 PM CDT	River Flood Warning	HGX	Jackson	5 days
Apr 17, 11:51 PM CDT	Severe Thunderstorm Warning	HGX	Liberty	39 min
Apr 18, 2:37 AM CDT	Severe Thunderstorm Warning	HGX	Polk	38 min
Apr 18, 6:41 AM CDT	Marine Weather Statement	HGX		2 hr
Apr 18, 7:39 AM CDT	Areal Flood Advisory	HGX	Burleson, Washington	3 hr
Apr 18, 9:35 AM CDT	Small Craft Advisory	HGX		9 hr
Apr 18, 9:37 AM CDT	Tornado Warning	HGX	Grimes, Madison, Walker	23 min
Apr 18, 9:47 AM CDT	Tornado Warning	HGX	Austin, Colorado, Washington	43 min
Apr 18, 9:54 AM CDT	River Flood Warning	HGX	Jackson	4 days
Apr 18, 10:32 AM CDT	Tornado Warning	HGX	Washington	28 min
Apr 18, 10:49 AM CDT	Tornado Warning	HGX	Grimes, Walker	26 min
Apr 18, 10:52 AM CDT	Areal Flood Advisory	HGX	Austin, Colorado, Washington	3 hr
Apr 18, 11:12 AM CDT	Areal Flood Advisory	HGX	Grimes, Harris, Montgomery, Waller	3 hr
Apr 18, 11:33 AM CDT	Areal Flood Advisory	HGX	Grimes, Harris, Montgomery, Waller	2 hr
Apr 18, 11:40 AM CDT	Severe Thunderstorm Warning	HGX	Wharton	50 min
Apr 18, 11:44 AM CDT	Areal Flood Advisory	HGX	Fort Bend, Wharton	2 hr
Apr 18, 12:02 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Wharton	43 min
Apr 18, 12:08 PM CDT	Tornado Warning	HGX	Brazoria, Fort Bend, Wharton	37 min
Apr 18, 12:15 PM CDT	Severe Thunderstorm Warning	HGX	Liberty, Montgomery, San Jacinto	45 min
Apr 18, 12:26 PM CDT	Special Marine Warning	HGX		64 min
Apr 18, 12:43 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend	47 min
Apr 18, 12:46 PM CDT	Flash Flood Warning	HGX	Harris, Montgomery	119 min
Apr 18, 1:22 PM CDT	Flash Flood Warning	HGX	Brazoria, Fort Bend, Galveston	3 hr
Apr 18, 1:29 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Galveston, Harris	46 min
Apr 18, 1:30 PM CDT	Severe Thunderstorm Warning	HGX	Fort Bend, Wharton	45 min
Apr 18, 1:42 PM CDT	Flash Flood Warning	HGX	Chambers, Harris	3 hr
Apr 18, 2:02 PM CDT	Flash Flood Warning	HGX	Austin, Colorado, Fort Bend, Wharton	3 hr
Apr 18, 2:06 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Galveston, Harris	24 min
Apr 18, 2:13 PM CDT	Special Marine Warning	HGX		92 min
Apr 18, 3:04 PM CDT	River Flood Warning	HGX	Austin, Fort Bend, Wharton	55 hr
Apr 18, 3:05 PM CDT	Special Marine Warning	HGX		55 min
Apr 18, 3:05 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Galveston, Harris	40 min
Apr 18, 3:20 PM CDT	Coastal Flood Statement	HGX	Chambers, Galveston	3 hr
Apr 18, 3:33 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	42 min
Apr 18, 3:46 PM CDT	Tornado Warning	HGX	Brazoria, Galveston	29 min
Apr 18, 4:04 PM CDT	Tornado Warning	HGX	Galveston	19 min
Apr 18, 4:07 PM CDT	River Flood Warning	HGX	Galveston, Harris	38 hr
Apr 18, 4:07 PM CDT	Special Marine Warning	HGX		53 min
Apr 18, 4:12 PM CDT	Severe Thunderstorm Warning	HGX	Galveston	33 min
Apr 18, 4:19 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	41 min
Apr 18, 4:23 PM CDT	Areal Flood Advisory	HGX	Harris	3 hr
Apr 18, 4:24 PM CDT	River Flood Warning	HGX	Harris	18 hr
Apr 18, 4:24 PM CDT	Special Marine Warning	HGX		96 min
Apr 18, 4:46 PM CDT	Areal Flood Advisory	HGX	Brazoria	3 hr
Apr 18, 4:59 PM CDT	Areal Flood Advisory	HGX	Brazoria, Matagorda, Wharton	2 hr
Apr 18, 4:59 PM CDT	River Flood Warning	HGX	Harris	17 hr
Apr 18, 5:21 PM CDT	River Flood Warning	HGX	Montgomery	52 hr
Apr 18, 5:21 PM CDT	River Flood Warning	HGX	Harris, Liberty	17 hr
Apr 18, 5:21 PM CDT	River Flood Warning	HGX	Montgomery	17 hr
Apr 18, 5:21 PM CDT	River Flood Warning	HGX	Harris, Montgomery	4 hr
Apr 18, 5:21 PM CDT	River Flood Warning	HGX	Harris, Montgomery	17 hr
Apr 18, 5:37 PM CDT	River Flood Warning	HGX	Galveston, Harris	27 hr

Nearby

Flash Flood Warnings in Texas, 2009 Every flash flood warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.