Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Mar 28, 2012, 8:51 PM CDT for Brazos County, Burleson County, Texas. It was in force for 69 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 28, 2012, 8:51 PM CDT (01:51 UTC)
- Expired
- Mar 28, 2012, 10:00 PM CDT
- In force
- 69 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Brazos County, TX, Burleson County, TX
The radar
The Ft Hood radar (KGRK), 71 km from the middle of the area, began a volume at 01:53 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 28, 9:10 PM CDT | FLASH FLOOD | Caldwell, TX | TRAINED SPOTTER REPORTED FOUR INCHES OF RAINFALL IN THE GRAY STREET AREA OF CALDWELL ALONG WITH STREET FLOODING AND ROAD CLOSURES OCCURRING ALONG THE HIGHWAY 21 AREA OF THE CITY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 1.9 hours before the alert went out and 255 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 554 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 963 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
395
WGUS54 KHGX 290151
FFWHGX
TXC041-051-290300-
/O.NEW.KHGX.FF.W.0021.120329T0151Z-120329T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
851 PM CDT WED MAR 28 2012
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BURLESON COUNTY IN SOUTHEAST TEXAS...
SOUTHERN BRAZOS COUNTY IN SOUTHEAST TEXAS...
* UNTIL 1000 PM CDT
* AT 840 PM CDT...THE BURLESON COUNTY SHERIFF'S OFFICE REPORTED
NUMEROUS ROADS UNDER WATER...AND WATER ENTERING THREE HOMES AND A
HOTEL IN CALDWELL. RADAR INDICATED SLOW MOVING SHOWERS
AND THUNDERSTORMS...SOME WITH LOCALLY HEAVY RAINFALL...LOCATED
IN THE WARNED AREA. RADAR INDICATES 1 TO 2 INCHES OF RAIN HAS
ALREADY FALLEN...AND ANOTHER 1 TO 2 INCHES IS POSSIBLE.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CALDWELL AND SNOOK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DEPTH AND SPEED OF FLASH FLOOD WATERS. ACT QUICKLY IF FLASH FLOODING
IS OBSERVED. DO NOT STAY IN AREAS PRONE TO FLOODING WHEN WATER BEGINS
TO RISE.
&&
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3059 9693 3074 9662 3074 9660 3070 9656
3074 9649 3046 9614 3032 9661 3057 9695
$$2 follow-up statements
606
WGUS74 KHGX 290218
FFSHGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
918 PM CDT WED MAR 28 2012
TXC041-051-290300-
/O.CON.KHGX.FF.W.0021.000000T0000Z-120329T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURLESON TX-BRAZOS TX-
918 PM CDT WED MAR 28 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN BRAZOS AND
BURLESON COUNTIES UNTIL 1000 PM CDT...
AT 910 PM CDT...A TRAINED WEATHER SPOTTER REPORTED A RAINFALL TOTAL
OF 4 INCHES IN THE CALDWELL AREA WITH FLOODED ROADS AND ROAD
CLOSURES OCCURRING ALONG HIGHWAY 21. SHOWERS AND THUNDERSTORMS...
SOME WITH LOCALLY HEAVY RAINFALL...PERSIST ACROSS THE AREA. AN
ADDITIONAL 1 TO 2 INCHES OF RAINFALL IS POSSIBLE THROUGH 1000 PM CDT
WHICH COULD LEAD TO ADDITIONAL FLOODING.
RUNOFF FROM THIS EXCESSIVE RAINFALL COULD CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING
INCLUDE...CALDWELL...SNOOK...BRYAN...AND COLLEGE STATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DEPTH AND SPEED OF FLASH FLOOD WATERS. ACT QUICKLY IF FLASH FLOODING
IS OBSERVED. DO NOT STAY IN AREAS PRONE TO FLOODING WHEN WATER BEGINS
TO RISE.
&&
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3059 9693 3074 9662 3074 9660 3070 9656
3074 9649 3046 9614 3032 9661 3057 9695
$$856
WGUS74 KHGX 290304
FFSHGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1004 PM CDT WED MAR 28 2012
TXC041-051-290317-
/O.EXP.KHGX.FF.W.0021.000000T0000Z-120329T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURLESON TX-BRAZOS TX-
1004 PM CDT WED MAR 28 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN BRAZOS AND
BURLESON COUNTIES HAS BEEN ALLOWED TO EXPIRE...
AT 1000 PM CDT...THE HEAVIEST RAINFALL HAS MOVED TO THE EAST OF THE
CALDWELL AREA WHERE FLOODING WAS OBSERVED EARLIER THIS EVENING.
HEAVY RAIN HAS MOSTLY COME TO AN END OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA WILL BEGIN TO SLOWLY RECEDE. IF ANY
FLOODING IS OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DEPTH AND SPEED OF FLASH FLOOD WATERS. ACT QUICKLY IF FLASH FLOODING
IS OBSERVED. DO NOT STAY IN AREAS PRONE TO FLOODING WHEN WATER BEGINS
TO RISE.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3059 9693 3074 9662 3074 9660 3070 9656
3074 9649 3046 9614 3032 9661 3057 9695
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 9:45 PM CDT | Areal Flood Advisory | HGX | Brazos, Grimes, Madison, Walker | 2 hr |
| Mar 28, 10:00 PM CDT | Areal Flood Advisory | HGX | Brazos, Burleson | 108 min |
| Mar 28, 11:45 PM CDT | Areal Flood Advisory | HGX | Brazos, Burleson, Grimes, Houston, Madison, Montgomery and 3 more | 3 hr |
| Mar 29, 10:02 AM CDT | Special Weather Statement | HGX | Jackson | 58 min |
| Mar 29, 10:41 AM CDT | Areal Flood Advisory | HGX | Jackson, Matagorda, Wharton | 3 hr |
| Mar 29, 11:56 AM CDT | Special Marine Warning | HGX | 64 min | |
| Mar 29, 12:34 PM CDT | Special Marine Warning | HGX | 86 min | |
| Mar 29, 1:58 PM CDT | Special Marine Warning | HGX | 92 min | |
| Mar 29, 2:31 PM CDT | Areal Flood Advisory | HGX | Chambers, Harris, Liberty, Montgomery | 119 min |
| Mar 29, 2:53 PM CDT | Flash Flood Warning | HGX | Harris, Montgomery | 2 hr |
| Mar 29, 2:57 PM CDT | Special Weather Statement | HGX | Burleson | 33 min |
| Mar 29, 3:53 PM CDT | Flash Flood Warning | HGX | Burleson | 2 hr |
| Mar 29, 6:16 PM CDT | Areal Flood Advisory | HGX | Madison | 59 min |
Nearby
Flash Flood Warnings in Texas, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.