Alert archive / Texas / Winter Storm Watches in 2011
Winter Storm Watch 1, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this winter storm watch at Feb 2, 2011, 3:10 PM CST for 16 counties in Texas. It took effect at Feb 3, 2011, 12:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 2, 2011, 3:10 PM CST (21:10 UTC)
- In effect from
- Feb 3, 2011, 12:00 PM CST
- Expired
- Feb 3, 2011, 7:33 AM CST
- In force
- Issued by
- NWS Austin/San Antonio, TX
Counties Atascosa County, TX, Bastrop County, TX, Bexar County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Lavaca County, TX, Lee County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 32 km from the middle of the area, began a volume at 21:12 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, 9.2 hours before the alert went out and 306 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
- 1359 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 592 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this winter storm watch went out at Feb 1, 5:52 PM CST, 21 hours 18 minutes earlier.
Area forecast discussion, Feb 1, 5:52 PM CST, 21 hours 18 minutes before
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</html>The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 2, 10:23 AM CST | Wind Chill Advisory | EWX | Bastrop, Bexar, Caldwell, Comal, Guadalupe, Kinney and 3 more | 25 hr |
Nearby
Winter Storm Watches in Texas, 2011Every winter storm watch in 2011
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.