Alert archive / Texas / Wind Advisories in 2009
Wind Advisory 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this wind advisory at Feb 21, 2009, 9:21 AM CST for 22 counties in Texas. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Feb 21, 2009, 9:21 AM CST (15:21 UTC)
- Expired
- Feb 21, 2009, 8:00 PM CST
- In force
- 11 hr
- Issued by
- NWS Austin/San Antonio, TX
All 22 counties
Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Edwards County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lee County, TX, Llano County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX
The radar
The Austin/San Antonio radar (KEWX), 75 km from the middle of the area, began a volume at 15:22 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, 3.4 hours before the alert went out and 215 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
- 728 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS74 KEWX 211521 NPWEWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 921 AM CST SAT FEB 21 2009 ...WIND ADVISORY IN EFFECT THROUGH THIS EVENING FOR THE HILL COUNTRY AND ADJACENT AREAS OF SOUTH CENTRAL TEXAS... .A COLD FRONT WILL SWEEP SOUTHEASTWARD ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY TODAY. STRONG NORTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS OF 35 MPH WILL OCCUR BEHIND THE FRONT. WINDS WILL DIMINISH THIS EVENING. TXZ171>173-183>194-202>208-220200- /O.NEW.KEWX.WI.Y.0004.090221T1521Z-090222T0200Z/ LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE- MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL- INCLUDING THE CITIES OF...LLANO...BURNET...GEORGETOWN...DEL RIO... ROCKSPRINGS...LEAKEY...KERRVILLE...BANDERA...FREDERICKSBURG... BOERNE...BLANCO...SAN MARCOS...AUSTIN...BASTROP...GIDDINGS... BRACKETTVILLE...UVALDE...HONDO...SAN ANTONIO...NEW BRAUNFELS... SEGUIN...LOCKHART 921 AM CST SAT FEB 21 2009 ...WIND ADVISORY IN EFFECT UNTIL 8 PM CST THIS EVENING... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 8 PM CST THIS EVENING. THE WIND ADVISORY IS ALONG AND NORTH OF A LINE FROM DEL RIO TO SAN ANTONIO TO GIDDINGS. NORTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS OF 35 MPH WILL OCCUR FOLLOWING THE PASSAGE OF A COLD FRONT. A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 26 TO 39 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. DUE TO THE STRONG NORTHWEST WINDS...ANY FIRES THAT DO OCCUR...WILL BE DIFFICULT TO CONTROL AND CONTAIN. $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 9:46 AM CST | Red Flag Warning | EWX | Edwards, Kinney, Real, Uvalde, Val Verde | 8 hr |
Nearby
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.