Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 34, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 10, 2012, 4:39 PM CDT for Bandera County, Gillespie County, Kerr County, Texas. It was in force for 81 min. 4 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
- May 10, 2012, 4:39 PM CDT (21:39 UTC)
- Expired
- May 10, 2012, 6:00 PM CDT
- In force
- 81 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bandera County, TX, Gillespie County, TX, Kerr County, TX
The radar
The Austin/San Antonio radar (KEWX), 126 km from the middle of the area, began a volume at 21:39 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 |
|---|---|---|---|
| May 10, 4:54 PM CDT | HEAVY RAIN 1 | 1 N Kerrville, TX | 1 INCH OF RAIN FELL IN 10 MINUTES |
| May 10, 5:20 PM CDT | HEAVY RAIN 3.5 | Harper, TX | HEAVY RAINFALL OF 3 TO 4 INCHES OVER THE PAST 3 HOURS NEAR HARPER |
| May 10, 5:45 PM CDT | FLASH FLOOD | Kerrville, TX | LOW WATER CROSSING ON HILL COUNTRY ROAD CLOSED DUE TO FLOODING |
| May 10, 5:45 PM CDT | FLASH FLOOD | Medina, TX | FM 2107 AT ROCKY CREEK CLOSED DUE TO FLOODED LOW WATER CROSSING |
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 12:00Z, 9.7 hours before the alert went out and 186 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
- 1149 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 663 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 7.4
The text
As transmitted, in the capitals the NWS used until 2016.
372
WGUS54 KEWX 102139
FFWEWX
TXC019-171-265-102300-
/O.NEW.KEWX.FF.W.0034.120510T2139Z-120510T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
439 PM CDT THU MAY 10 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL BANDERA COUNTY...
WESTERN GILLESPIE COUNTY...
EASTERN KERR COUNTY...
* UNTIL 600 PM CDT.
* AT 437 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETECTED VERY HEAVY RAINS SETTING UP ACROSS PORTIONS OF THE HILL
COUNTRY IN AN AREA GENERALLY BOUNDED BY LINE FROM MOUNTAIN HOME TO
UTOPIA TO LAKE HILLS TO CHERRY SPRING. RAINS WILL MOVE OVER THE
SAME AREAS FOR THE NEXT COUPLE OF HOURS. RAINFALL RATES OF 1 TO 3
INCHES PER HOUR HAVE BEEN ESTIMATED AND WILL CONTINUE TO OCCUR.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BANDERA...KERRVILLE...MEDINA...TARPLEY...CAMP VERDE...CENTER
POINT...CHERRY SPRING...CYPRESS CREEK...DOSS...HARPER...HILLTOP...
HUNT...INGRAM...KERRVILLE STATE PARK...TIVYDALE AND WALTONIA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.
&&
LAT...LON 3050 9888 2963 9899 2963 9944 3029 9935
3030 9931 3050 9931 3051 9930
$$1 follow-up statement
022
WGUS74 KEWX 102208
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
508 PM CDT THU MAY 10 2012
TXC019-171-265-102300-
/O.CON.KEWX.FF.W.0034.000000T0000Z-120510T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILLESPIE TX-KERR TX-BANDERA TX-
508 PM CDT THU MAY 10 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
CENTRAL BANDERA...EASTERN KERR AND WESTERN GILLESPIE COUNTIES...
AT 5 PM CDT...A BAND OF HEAVY RAINS WITH SOME EMBEDDED
THUNDERSTORMS EXTENDED FROM JUST SOUTH OF UTOPIA TO NEAR
FREDERICKSBURG MOVING EAST AT 20 MPH WITH INDIVIDUAL CELLS MOVING
NORTHEAST AT 25 MPH. NEAR 1 INCH OF RAIN IN TEN MINUTES WAS
OBSERVED JUST NORTH OF KERRVILLE WITH ANOTHER REPORT OF 2 AND 3/4
INCHES AT HARPER JUST BEFORE 5 PM.
SECONDARY ROADS AND LOW WATER CROSSINGS WILL FLOOD THE NEXT FEW
HOURS. MOTORISTS SHOULD NOT ENTER LOW WATER CROSSINGS. MOST FLOOD
FATALITIES OCCUR WHEN MOTORISTS ENTER FLOODED ROADWAYS.
LOCATIONS IN THE WARNING AREA INCLUDE TIVYDALE...HILLTOP...CHERRY
SPRING...DOSS AND HARPER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT THURSDAY EVENING
FOR SOUTH CENTRAL TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 800 PM CDT THURSDAY EVENING FOR SOUTH CENTRAL TEXAS.
&&
LAT...LON 3050 9888 2963 9899 2963 9944 3029 9935
3030 9931 3050 9931 3051 9930
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 5:21 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 54 min |
| May 10, 6:12 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 63 min |
| May 10, 7:19 AM CDT | Severe Thunderstorm Warning | EWX | Edwards, Val Verde | 44 min |
| May 10, 9:29 AM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Frio, Zavala | 61 min |
| May 10, 10:30 AM CDT | Severe Thunderstorm Warning | EWX | Frio | 60 min |
| May 10, 10:33 AM CDT | Areal Flood Advisory | EWX | Frio | 117 min |
| May 10, 11:17 AM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Frio | 58 min |
| May 10, 11:32 AM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Wilson | 58 min |
| May 10, 12:02 PM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| May 10, 12:14 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Frio | 31 min |
| May 10, 12:20 PM CDT | Areal Flood Advisory | EWX | Atascosa, Frio | 2 hr |
| May 10, 12:40 PM CDT | Areal Flood Advisory | EWX | Bandera, Edwards, Kerr, Kinney, Real, Uvalde | 110 min |
| May 10, 1:04 PM CDT | Severe Thunderstorm Warning | EWX | Karnes, Wilson | 56 min |
| May 10, 1:15 PM CDT | Tornado Warning | EWX | Gonzales, Karnes, Wilson | 45 min |
| May 10, 1:42 PM CDT | Tornado Warning | EWX | Atascosa | 33 min |
| May 10, 1:57 PM CDT | Tornado Warning | EWX | DeWitt, Gonzales, Karnes, Wilson | 33 min |
| May 10, 2:19 PM CDT | Flash Flood Warning | EWX | Atascosa, DeWitt, Gonzales, Karnes, Wilson | 3 hr |
| May 10, 2:24 PM CDT | Severe Thunderstorm Warning | EWX | Karnes | 51 min |
| May 10, 2:42 PM CDT | Tornado Warning | EWX | Karnes | 48 min |
| May 10, 2:49 PM CDT | Flash Flood Warning | EWX | Bandera, Edwards, Kerr, Real, Uvalde | 3 hr |
| May 10, 3:05 PM CDT | Tornado Warning | EWX | Wilson | 40 min |
| May 10, 3:31 PM CDT | Tornado Warning | EWX | Karnes | 29 min |
| May 10, 3:40 PM CDT | River Flood Warning | EWX | Val Verde | 31 hr |
| May 10, 3:45 PM CDT | Areal Flood Advisory | EWX | DeWitt, Fayette, Gonzales, Lavaca | 105 min |
| May 10, 3:57 PM CDT | Tornado Warning | EWX | DeWitt, Karnes, Wilson | 33 min |
| May 10, 4:52 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Gonzales, Karnes | 29 min |
| May 10, 5:58 PM CDT | Flash Flood Warning | EWX | Bandera, Blanco, Burnet, Edwards, Gillespie, Kendall and 4 more | 3 hr |
| May 10, 5:58 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Maverick, Uvalde, Zavala | 47 min |
| May 10, 6:11 PM CDT | Areal Flood Advisory | EWX | DeWitt, Fayette, Karnes, Lavaca | 109 min |
| May 10, 6:41 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Frio, Zavala | 49 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.