Alert archive / Texas / Flash Flood Warnings in 2008
Flash Flood Warning 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 27, 2008, 6:47 AM CDT for Travis County, Texas. It was in force for 3 hr. 5 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
- Apr 27, 2008, 6:47 AM CDT (11:47 UTC)
- Expired
- Apr 27, 2008, 9:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Travis County, TX
The radar
The Ft Hood radar (KGRK), 62 km from the middle of the area, began a volume at 11:50 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 |
|---|---|---|---|
| Apr 27, 7:20 AM CDT | FLASH FLOOD | 3 Wnw Sunset Valley, TX | 2 RDS CLOSED. 6800 OLD BEE CAVES RD AT US290 AND 6300 TANNER AT US290 |
| Apr 27, 7:20 AM CDT | FLASH FLOOD | 7 Sw Austin, TX | 2 RDS CLOSED. 6800 BEE CAVES RD AT US290 AND 6300 TANNER AT US290 |
| Apr 27, 7:45 AM CDT | FLASH FLOOD | 1 Sw Austin, TX | RD CLOSURE. 1300 W. OLTORF |
| Apr 27, 8:10 AM CDT | FLASH FLOOD | 3 Ese Sunset Valley, TX | RD CLOSED. 5100 WESSON RD |
| Apr 27, 9:25 AM CDT | FLASH FLOOD | 5 Nnw Austin, TX | RD CLOSED. LAKEWOOD DR. IN BULL CREEK PARK |
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, 11.8 hours before the alert went out and 281 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1198 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 165 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 271149 FFWEWX TXC453-271445- /O.NEW.KEWX.FF.W.0004.080427T1147Z-080427T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 647 AM CDT SUN APR 27 2008 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL TRAVIS COUNTY... * UNTIL 945 AM CDT. * AT 642 AM CDT...THE NATIONAL WEATHER SERVICE HAS DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE FLASH FLOODING FROM A THUNDERSTORM OVER THE CITY OF AUSTIN. RAINFALL RATES OF 1 TO 3 INCHES PER HOUR CAN BE EXPECTED. THIS RAINFALL WILL IMPACT BARTON...BOGGY...BULL...SHOAL...WALLER AND WALNUT CREEKS WHICH MAY BRIEFLY GO OUT OF BANKS. * LOCATIONS IN THE WARNING AREA INCLUDE WEST LAKE HILLS...MANSFIELD DAM...BEE CAVE AND AUSTIN. WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU SAVE MAY BE YOUR OWN. LAT...LON 3046 9792 3043 9765 3013 9781 3026 9803 TIME...MOT...LOC 1147Z 180DEG 0KT 3028 9786 $$
1 follow-up statement
000 WGUS74 KEWX 271315 FFSEWX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 815 AM CDT SUN APR 27 2008 TXC453-271445- /O.CON.KEWX.FF.W.0004.000000T0000Z-080427T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ TRAVIS TX- 815 AM CDT SUN APR 27 2008 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR CENTRAL TRAVIS COUNTY... AT 814 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT LIGHT TO MODERATE RAINS ACROSS TRAVIS COUNTY. THE THREAT FOR ADDITIONAL FLASH FLOODING IS DECREASING. HOWEVER...NUMEROUS STREAMS...INCLUDING BARTON...BOGGY...SHOAL...WALLER...WILLIAMSON AND WALNUT CREEKS WILL CONTINUE TO RUN NEAR BANKFULL FOR THE NEXT HOUR OR SO DUE TO EARLIER VERY HEAVY RAINS. LOCATIONS IN THE WARNING AREA INCLUDE WEST LAKE HILLS...MANSFIELD DAM...BEE CAVE AND AUSTIN. A FEW ROADS HAVE BEEN CLOSED. RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED AREA. TURN AROUND DONT DROWN. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON CDT SUNDAY FOR SOUTH CENTRAL TEXAS. LAT...LON 3046 9792 3043 9765 3013 9781 3026 9803 TIME...MOT...LOC 1311Z 180DEG 0KT 3028 9786 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 2:19 AM CDT | Areal Flood Advisory | EWX | Atascosa, Karnes, Wilson | 116 min |
| Apr 27, 4:09 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 66 min |
| Apr 27, 5:00 AM CDT | Areal Flood Advisory | EWX | Blanco, Burnet, Gillespie, Llano, Travis, Williamson | 2 hr |
| Apr 27, 5:00 AM CDT | Areal Flood Advisory | EWX | Blanco, Burnet, Gillespie, Llano, Travis, Williamson | 2 hr |
| Apr 27, 5:15 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 45 min |
| Apr 27, 5:57 AM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Hays, Travis | 63 min |
| Apr 27, 6:57 AM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Travis | 63 min |
| Apr 27, 8:33 AM CDT | Areal Flood Advisory | EWX | Bastrop, Burnet, Fayette, Lee, Williamson | 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.