Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 62, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 28, 2012, 10:29 PM CDT for Zavala County, Texas. It was in force for 3 hr. 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
- Sep 28, 2012, 10:29 PM CDT (03:29 UTC)
- Expired
- Sep 29, 2012, 1:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 66 km from the middle of the area, began a volume at 03:28 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 |
|---|---|---|---|
| Sep 28, 11:03 PM CDT | FLASH FLOOD | 6 N La Pryor, TX | WATER OVER THE ROADWAY HAS CLOSED HWY 83 SIX MILES NORTH OF LA PRYOR. TXDOT DISPATCHED TO BARRICADE ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 3.5 hours before the alert went out and 120 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
- 933 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 522 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
019 WGUS54 KEWX 290329 FFWEWX TXC507-290630- /O.NEW.KEWX.FF.W.0062.120929T0329Z-120929T0630Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1029 PM CDT FRI SEP 28 2012 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN ZAVALA COUNTY... * UNTIL 130 AM CDT. * AT 1027 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR WAS ESTIMATING RAINFALL AMOUNTS OF 3 TO 6 INCHES ACROSS THIS REGION. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BATESVILLE...LA PRYOR AND WASHER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS. && LAT...LON 2907 9944 2888 9946 2887 10006 2906 10003 $$
1 follow-up statement
060 WGUS74 KEWX 290541 FFSEWX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1241 AM CDT SAT SEP 29 2012 TXC507-290630- /O.CON.KEWX.FF.W.0062.000000T0000Z-120929T0630Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ZAVALA TX- 1241 AM CDT SAT SEP 29 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM CDT FOR NORTHERN ZAVALA COUNTY... AT 1235 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A THUNDERSTORM PRODUCING VERY HEAVY RAIN LEAVING NORTHERN ZAVALA COUNTY. HOWEVER...EARLY VERY HEAVY RAINS UP TO 6 INCHES WILL CONTINUE TO PRODUCE FLASH FLOODING ALONG HIGHWAYS 57 AND 83 AS WELL AS RURAL ROADS 117...187 AND 1436. LOCATIONS IN THE WARNING AREA INCLUDE BATESVILLE...LA PRYOR AND WASHER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS. && LAT...LON 2907 9944 2888 9946 2887 10006 2906 10003 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 7:30 PM CDT | Areal Flood Advisory | EWX | Maverick | 2 hr |
| Sep 28, 8:21 PM CDT | Flash Flood Warning | EWX | Maverick | 3 hr |
| Sep 28, 9:19 PM CDT | Areal Flood Advisory | EWX | Bexar, Comal, Guadalupe | 2 hr |
| Sep 28, 10:41 PM CDT | Flash Flood Warning | EWX | Dimmit | 3 hr |
| Sep 29, 12:14 AM CDT | Areal Flood Advisory | EWX | Bexar | 3 hr |
| Sep 29, 12:29 AM CDT | Special Weather Statement | EWX | Frio | 61 min |
| Sep 29, 12:53 AM CDT | Areal Flood Advisory | EWX | Frio, Zavala | 2 hr |
| Sep 29, 1:21 AM CDT | Flash Flood Warning | EWX | Frio, Zavala | 3 hr |
| Sep 29, 2:23 AM CDT | Special Weather Statement | EWX | Atascosa | 67 min |
| Sep 29, 3:01 AM CDT | Areal Flood Advisory | EWX | Bexar | 119 min |
| Sep 29, 4:37 AM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 113 min |
| Sep 29, 5:44 AM CDT | Areal Flood Advisory | EWX | Bexar, Guadalupe, Wilson | 106 min |
| Sep 29, 12:53 PM CDT | River Flood Warning | EWX | Val Verde | 8 hr |
| Sep 29, 3:33 PM CDT | Areal Flood Advisory | EWX | Karnes | 117 min |
| Sep 29, 4:57 PM CDT | Areal Flood Advisory | EWX | Gonzales, Lavaca | 2 hr |
| Sep 29, 6:38 PM CDT | Areal Flood Advisory | EWX | Lavaca | 112 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.