Alert archive / Texas / Flash Flood Warnings in 2008
Flash Flood Warning 13, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 18, 2008, 4:28 PM CDT for Real County, Texas. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2008, 4:28 PM CDT (21:28 UTC)
- Expired
- Aug 18, 2008, 5:57 PM CDT
- In force
- 89 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Real County, TX
The radar
The Laughlin AFB radar (KDFX), 86 km from the middle of the area, began a volume at 21:32 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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 9.5 hours before the alert went out and 115 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
- 1096 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 182128 FFWEWX TXC385-190015- /O.NEW.KEWX.FF.W.0013.080818T2128Z-080819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 428 PM CDT MON AUG 18 2008 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN REAL COUNTY... * UNTIL 715 PM CDT. * AT 417 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETERMINED THAT RAINFALL RATE ESTIMATES OF 2 TO 2 AND A HALF INCHES PER HOUR FROM A THUNDERSTORM OVER THE HEADWATERS OF THE FRIO RIVER WITH THE STORM MOVING SOUTH ABOUT 15 MPH ALONG THE RIVER. THIS WILL PRODUCE LOCALIZED FLOODING ALONG THE RIVER OVER NORTHERN REAL COUNTY. RIVER RECREATIONISTS AND OTHER INTERESTS SHOULD SEEK HIGHER GROUND AND BE ALERT FOR RISING RIVER LEVELS DOWNSTREAM. * THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU SAVE MAY BE YOUR OWN. LAT...LON 3007 9997 3006 9970 2980 9970 2980 10000 $$
2 follow-up statements
000 WGUS74 KEWX 182154 FFSEWX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 454 PM CDT MON AUG 18 2008 TXC385-190015- /O.CON.KEWX.FF.W.0013.000000T0000Z-080819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ REAL TX- 454 PM CDT MON AUG 18 2008 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR NORTHERN REAL COUNTY... AT 447 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO INDICATE HEAVY RAINS FROM A THUNDERSTORM MOVING SOUTH ABOUT 20 MPH ALONG THE FRIO RIVER OVER NORTHERN REAL COUNTY. THIS STORM COULD PRODUCE SUDDEN RISES ALONG THE FRIO RIVER DOWNSTREAM TO LEAKEY OVER THE NEXT SEVERAL HOURS. LOCATIONS IN THE WARNING AREA INCLUDE PRADE RANCH. WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU SAVE MAY BE YOUR OWN. LAT...LON 3007 9997 3006 9970 2980 9970 2980 10000 $$
000 WGUS74 KEWX 182257 FFSEWX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 557 PM CDT MON AUG 18 2008 TXC385-182305- /O.CAN.KEWX.FF.W.0013.000000T0000Z-080819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ REAL TX- 557 PM CDT MON AUG 18 2008 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN REAL COUNTY... HEAVY RAINS HAVE DIMINISHED OVER REAL COUNTY DURING THE PAST HOUR AND NO REPORTS OF FLOODING HAVE BEEN RECEIVED..THUS THE FLASH FLOOD WARNING ISSUED EARLIER FOR NORTHERN FRIO COUNTY HAS BEEN CANCELLED. LAT...LON 3007 9997 3006 9970 2980 9970 2980 10000 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:20 PM CDT | Areal Flood Advisory | EWX | Val Verde | 115 min |
| Aug 18, 11:12 AM CDT | Areal Flood Advisory | EWX | Bexar, Comal, Guadalupe | 108 min |
| Aug 18, 1:23 PM CDT | Areal Flood Advisory | EWX | DeWitt, Karnes | 112 min |
| Aug 18, 2:03 PM CDT | Areal Flood Advisory | EWX | Wilson | 117 min |
Nearby
Flash Flood Warnings in Texas, 2008Every flash flood warning in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.