Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Feb 3, 2012, 6:00 AM CST for Liberty County, Polk County, San Jacinto County, Texas. It was in force for 2 hr. 3 reports 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
- Feb 3, 2012, 6:00 AM CST (12:00 UTC)
- Expired
- Feb 3, 2012, 8:00 AM CST
- In force
- 2 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Liberty County, TX, Polk County, TX, San Jacinto County, TX
The radar
The Houston radar (KHGX), 123 km from the middle of the area, began a volume at 12:02 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 |
|---|---|---|---|
| Feb 3, 6:05 AM CST | FLASH FLOOD | 3 Sw Segno, TX | HIGH WATER FM 2610 AREA AND LOCATIONS IN AND AROUND THE INTERSECTION OF FM 943 AND SH 146. |
| Feb 3, 6:10 AM CST | FLASH FLOOD | 3 N Romayor, TX | ROADS IMPASSABLE AROUND FM 2850 AND AROUND FM 2610. |
| Feb 3, 6:25 AM CST | HEAVY RAIN 9.3 | 6 N Romayor, TX | RAINFALL TOTAL MEASURE BY A CO-OP OBSERVER IN ACE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.0 hours before the alert went out and 153 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
- 844 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 448 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
904 WGUS54 KHGX 031200 FFWHGX TXC291-373-407-031400- /O.NEW.KHGX.FF.W.0009.120203T1200Z-120203T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 600 AM CST FRI FEB 3 2012 THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME SOUTHEAST SAN JACINTO COUNTY IN SOUTHEAST TEXAS... EXTREME NORTHEAST LIBERTY COUNTY IN SOUTHEAST TEXAS... SOUTHEASTERN POLK COUNTY IN SOUTHEAST TEXAS... * UNTIL 800 AM CST * AT 600 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE LOCATED IN THE WARNED AREA. RADAR INDICATED AS MUCH AS 4 TO 6 INCHES OF RAIN HAS ALREADY FALLEN. WITH HEAVY RAIN CONTINUING TO DEVELOP ACROSS THE AREA...AN ADDITIONAL 2 TO 4 INCHES OF RAIN COULD OCCUR WHICH WILL LIKELY LEAD TO FLOODING OR FLASH FLOODING. THIS IS A POTENTIALLY VERY DANGEROUS SITUATION FOR LOCATIONS FROM THE ROMAYOR AREA TO THE SEGNO AREA. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. FLASH FLOODING IS EXPECTED TO OCCUR OVER MAINLY RURAL AREAS OF EXTREME SOUTHEAST SAN JACINTO...EXTREME NORTHEAST LIBERTY COUNTY...AND SOUTHEASTERN POLK COUNTY...INCLUDING THE TOWN OF AND LOCATIONS IN AND AROUND ROMAYOR AND SEGNO. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3053 9455 3042 9492 3046 9497 3072 9459 $$
2 follow-up statements
120 WGUS74 KHGX 031238 FFSHGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 638 AM CST FRI FEB 3 2012 TXC291-373-407-031400- /O.CON.KHGX.FF.W.0009.000000T0000Z-120203T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LIBERTY TX-POLK TX-SAN JACINTO TX- 638 AM CST FRI FEB 3 2012 ...FLASH FLOOD WARNING FOR REMAINS IN EFFECT FOR EXTREME SOUTHEAST SAN JACINTO...SOUTHEASTERN POLK AND EXTREME NORTHEAST LIBERTY COUNTIES UNTIL 800 AM CST... AT 635 AM CST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT VERY HEAVY RAINFALL FROM THUNDERSTORMS ACROSS THE WARNED AREA HAS CAUSED WATER LEVELS TO SIGNIFICANTLY RISE IN AND AROUND THE ROMAYOR AND SEGNO AREAS. RAINFALL AMOUNTS ARE ESTIMATED AT 6 TO 19 INCHES...AND RAINS CONTINUE TO FALL ACROSS THE AREA. LIFE THREATENING FLASH FLOODING IS POSSIBLE IN AND AROUND THE ROMAYOR AND SEGNO AREAS! RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. FLASH FLOODING IS EXPECTED TO OCCUR IN AND AROUND THE ROMAYOR AND SEGNO AREAS. SIGNIFICANT FLOODING IS ALSO POSSIBLE ALONG FM 2610 OVER MENARD CREEK AT THE CONFLUENCE WITH THE TRINITY RIVER. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... BIG SANDY CREEK...MENARD CREEK...TRINITY RIVER...LITTLE PINE ISLAND BAYOU...AND MOST SMALL WATERSHEDS IN SOUTHERN POLK COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. && PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE... OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 3053 9455 3042 9492 3046 9497 3072 9459 $$
595 WGUS74 KHGX 031305 FFSHGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 705 AM CST FRI FEB 3 2012 TXC291-373-407-031400- /O.CON.KHGX.FF.W.0009.000000T0000Z-120203T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LIBERTY TX-POLK TX-SAN JACINTO TX- 705 AM CST FRI FEB 3 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EXTREME SOUTHEAST JACINTO...SOUTHEASTERN POLK AND EXTREME NORTHEAST LIBERTY COUNTIES UNTIL 800 AM CST... AT 700 AM CST...THE HEAVIEST RAINFALL WITH THE SHOWERS AND THUNDERSTORMS THAT HAVE CAUSED FLOODING IN AND AROUND THE ROMAYOR AND SEGNO AREAS HAS SHIFTED JUST NORTH OF THE AREA. AS A RESULT...ADDITIONAL HEAVY RAINFALL IS NOT EXPECTED TO DEVELOP ACROSS THE FLASH FLOOD WARNING AREA. HOWEVER...RAINFALL TOTAL ESTIMATES OF 6 TO 10 INCHES HAVE LIKELY CAUSED DANGEROUS FLOODING AND FLASH FLOODING CONDITIONS IN AND AROUND THE ROMAYOR AND SEGNO AREAS...INCLUDING LOCATIONS ALONG FM 2610 OVER MENARD CREEK AT THE CONFLUENCE WITH THE TRINITY RIVER. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... BIG SANDY CREEK...MENARD CREEK...TRINITY RIVER...LITTLE PINE ISLAND BAYOU...AND MOST SMALL WATERSHEDS IN SOUTHERN POLK COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && 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 3053 9455 3042 9492 3046 9497 3072 9459 $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 5:29 AM CST | Areal Flood Advisory | HGX | Liberty, Polk, San Jacinto | 2 hr |
| Feb 3, 8:28 AM CST | Flash Flood Warning | HGX | Liberty, Polk, San Jacinto | 2 hr |
| Feb 3, 9:21 AM CST | River Flood Warning | HGX | Liberty, Polk | 69 hr |
| Feb 3, 4:30 PM CST | Special Weather Statement | HGX | Grimes | 60 min |
| Feb 3, 4:35 PM CST | Tornado Warning | HGX | Grimes, Waller, Washington | 25 min |
| Feb 3, 4:42 PM CST | Severe Thunderstorm Warning | HGX | Brazos, Burleson | 48 min |
| Feb 3, 5:23 PM CST | Flash Flood Warning | HGX | Burleson | 2 hr |
| Feb 3, 5:48 PM CST | Special Weather Statement | HGX | Brazos | 57 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.