Alert archive / Texas / Winter Storm Watches in 2021
Winter Storm Watch 2, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this winter storm watch at Feb 12, 2021, 3:20 PM CST for 16 counties in Texas. It took effect at Feb 14, 2021, 3:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 12, 2021, 3:20 PM CST (21:20 UTC)
- In effect from
- Feb 14, 2021, 3:00 PM CST
- Expired
- Feb 13, 2021, 2:22 PM CST
- In force
- Issued by
- NWS Austin/San Antonio, TX
Counties Atascosa County, TX, Bexar County, TX, DeWitt County, TX, Dimmit County, TX, Fayette County, TX, Frio County, TX, Gonzales County, TX, Guadalupe County, TX, Karnes County, TX, Kinney County, TX, Lavaca County, TX, Maverick County, TX, Medina County, TX, Uvalde County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 82 km from the middle of the area, began a volume at 21:21 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
Corpus Christi, TX (KCRP), launched 12:00Z, 9.3 hours before the alert went out and 203 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
- 8 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 408 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
199 WWUS44 KEWX 122120 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 320 PM CST Fri Feb 12 2021 TXZ171>173-183>194-206-208-131200- /O.NEW.KEWX.WS.W.0003.210213T1200Z-210215T1800Z/ Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Comal-Caldwell- Including the cities of Llano, Burnet, Georgetown, Del Rio, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, New Braunfels, and Lockhart 320 PM CST Fri Feb 12 2021 ...WINTER STORM WARNING IN EFFECT FROM 6 AM SATURDAY TO NOON CST MONDAY... * WHAT...Light icing accumulations will be possible Saturday and any icing on already frozen surfaces will quickly become problematic. A more robust system will arrive Sunday afternoon and Sunday night and bring total snow accumulations of 1 to 3 inches and ice accumulations of around one tenth of an inch. * WHERE...North of a Del Rio to New Braunfels to Giddings line. * WHEN...From 6 AM Saturday to noon CST Monday. * ADDITIONAL DETAILS...In addition to the wintry precipitation temperatures will drop into the single digits and teens Sunday night with wind chills near zero. These values can lead to hypothermia for anyone stranded within the icy roads expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state can be obtained at drivetexas.org. && $$ TXZ202>205-207-209-217>225-228-131200- /O.NEW.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/ Kinney-Uvalde-Medina-Bexar-Guadalupe-Fayette-Maverick-Zavala-Frio- Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- Including the cities of Brackettville, Uvalde, Hondo, San Antonio, Seguin, La Grange, Eagle Pass, Crystal City, Pearsall, Pleasanton, Floresville, Karnes City, Gonzales, Cuero, Hallettsville, and Carrizo Springs 320 PM CST Fri Feb 12 2021 ...WINTER STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy mixed precipitation possible. Total snow accumulations of up to two inches and ice accumulations of around one tenth of an inch possible. * WHERE...Portions of south central Texas. * WHEN...From Sunday afternoon through Monday morning. * ADDITIONAL DETAILS...In addition to the wintry precipitation temperatures will drop into the teens Sunday night with wind chills in the single digits. These values can lead to hypothermia for anyone stranded within the icy roads expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
2 follow-up statements
345 WWUS44 KEWX 131030 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 430 AM CST Sat Feb 13 2021 ...MAJOR WINTER STORM TO IMPACT THE REGION SUNDAY THROUGH MONDAY MORNING... .Bitterly cold air and wintry precipitation in the form of freezing rain, sleet, and snow will impact the region Sunday through Monday morning. The system could lead to major stress on the region's infrastructure as well as cripple travel. The coldest temperatures since 1989 will impact the region. TXZ202>205-207-209-223-132100- /O.UPG.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/ /O.EXA.KEWX.WS.W.0003.210213T1200Z-210215T1800Z/ Kinney-Uvalde-Medina-Bexar-Guadalupe-Fayette-Gonzales- Including the cities of Brackettville, Uvalde, Hondo, San Antonio, Seguin, La Grange, and Gonzales 430 AM CST Sat Feb 13 2021 ...WINTER STORM WARNING IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Light icing accumulations will be possible today through tonight and any icing on already frozen surfaces will quickly become problematic. A more robust system will arrive Sunday afternoon and Sunday night and bring total snow accumulations of 1 to 3 inches, with isolated amounts up to 6 inches near and north of a Kerrville to La Grange line, and ice accumulations of around 1/10 to 1/4 of an inch. * WHERE...Near and north of a Del Rio to San Antonio to Schulenburg line. * WHEN...From 6 AM Saturday to noon CST Monday. * IMPACTS...Travel will be very difficult to near impossible across many areas late Sunday into Monday. Blowing snow in some areas could reduce visibility and snow may obscure ice underneath. Scattered power outages could occur, especially across the Hill Country and Central Texas where ice still exists from earlier rounds of winter precipitation. * ADDITIONAL DETAILS...Bitterly cold air will combine with gusty winds to produce wind wind chill values of -15 to 5 degrees Monday morning. These values can lead to hypothermia for anyone stranded within the icy roads expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state can be obtained at drivetexas.org. && $$ TXZ171>173-183>194-206-208-132100- /O.CON.KEWX.WS.W.0003.210213T1200Z-210215T1800Z/ Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Comal-Caldwell- Including the cities of Llano, Burnet, Georgetown, Del Rio, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, New Braunfels, and Lockhart 430 AM CST Sat Feb 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Light icing accumulations will be possible today through tonight and any icing on already frozen surfaces will quickly become problematic. A more robust system will arrive Sunday afternoon and Sunday night and bring total snow accumulations of 1 to 3 inches, with isolated amounts up to 6 inches near and north of a Kerrville to La Grange line, and ice accumulations of around 1/10 to 1/4 of an inch. * WHERE...Near and north of a Del Rio to San Antonio to Schulenburg line. * WHEN...From 6 AM Saturday to noon CST Monday. * IMPACTS...Travel will be very difficult to near impossible across many areas late Sunday into Monday. Blowing snow in some areas could reduce visibility and snow may obscure ice underneath. Scattered power outages could occur, especially across the Hill Country and Central Texas where ice still exists from earlier rounds of winter precipitation. * ADDITIONAL DETAILS...Bitterly cold air will combine with gusty winds to produce wind wind chill values of -15 to 5 degrees Monday morning. These values can lead to hypothermia for anyone stranded within the icy roads expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state can be obtained at drivetexas.org. && $$ TXZ217>222-224-225-228-132100- /O.CON.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/ Maverick-Zavala-Frio-Atascosa-Wilson-Karnes-De Witt-Lavaca-Dimmit- Including the cities of Eagle Pass, Crystal City, Pearsall, Pleasanton, Floresville, Karnes City, Cuero, Hallettsville, and Carrizo Springs 430 AM CST Sat Feb 13 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Light icing accumulations will be possible today through tonight. Heavy mixed precipitation is possible Sunday afternoon through Sunday night, with total snow accumulations of around 1/2 to 1 inch and ice accumulations of around one tenth of an inch possible. * WHERE...Portions of south central Texas. * WHEN...From Sunday afternoon through Monday morning. * IMPACTS...Travel could become difficult across many areas late Sunday into Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
840 WWUS44 KEWX 132022 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 222 PM CST Sat Feb 13 2021 ...MAJOR WINTER STORM TO IMPACT THE REGION THROUGH MONDAY MORNING... .Bitterly cold air and wintry precipitation in the form of freezing rain, sleet, and snow will impact the region Sunday through Monday morning. The system could lead to major stress on the region's infrastructure as well as cripple travel. The coldest temperatures since 1989 will impact the region. TXZ218>222-224-225-141000- /O.UPG.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/ /O.EXA.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/ Zavala-Frio-Atascosa-Wilson-Karnes-De Witt-Lavaca- Including the cities of Crystal City, Pearsall, Pleasanton, Floresville, Karnes City, Cuero, and Hallettsville 222 PM CST Sat Feb 13 2021 ...WINTER STORM WARNING IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Light icing accumulations will be possible today through tonight and any icing will quickly become problematic. A more robust system will arrive Sunday afternoon and Sunday night and heavy mixed precipitation is expected. Snow accumulations of up to two inches and ice accumulations of around two tenths of an inch are anticipated. * WHERE...Portions of south central Texas. * WHEN...Until noon CST Monday. * ADDITIONAL DETAILS...Bitterly cold air will combine with gusty winds to produce wind wind chill values of 4 to 7 degrees Monday morning. These values can lead to hypothermia for anyone stranded within the icy roads expected. * IMPACTS...Travel could become difficult across many areas late Sunday into Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state can be obtained at drivetexas.org. && $$ TXZ171>173-183>194-202>209-223-141000- /O.CON.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/ Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Gonzales- 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, La Grange, and Gonzales 222 PM CST Sat Feb 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST MONDAY... * WHAT...Light icing accumulations will be possible today through tonight and any icing on already frozen surfaces will quickly become problematic. A more robust system will arrive Sunday afternoon and Sunday night and bring total snow accumulations of 1 to 4 inches, with isolated amounts up to 6 inches near and north of a Kerrville to La Grange line, and ice accumulations of around 1/10 to 1/4 of an inch. * WHERE...Near and north of a Del Rio to San Antonio to Schulenburg line. * WHEN...From 6 AM Saturday to noon CST Monday. * IMPACTS...Travel will be very difficult to near impossible across many areas late Sunday into Monday. Blowing snow in some areas could reduce visibility and snow may obscure ice underneath. Scattered power outages could occur, especially across the Hill Country and Central Texas where ice still exists from earlier rounds of winter precipitation. * ADDITIONAL DETAILS...Bitterly cold air will combine with gusty winds to produce wind wind chill values of -15 to 5 degrees Monday morning. These values can lead to hypothermia for anyone stranded within the icy roads expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state can be obtained at drivetexas.org. && $$ TXZ217-228-141000- /O.UPG.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/ /O.NEW.KEWX.WW.Y.0003.210214T2100Z-210215T1800Z/ Maverick-Dimmit- Including the cities of Eagle Pass and Carrizo Springs 222 PM CST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM SUNDAY TO NOON CST MONDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of up to one inch and ice accumulations of a light glaze. * WHERE...Maverick and Dimmit Counties. * WHEN...From 3 PM Sunday to noon CST Monday. * ADDITIONAL DETAILS...Bitterly cold air will combine with gusty winds to produce wind wind chill values of 5 to 7 degrees Monday morning. These values can lead to hypothermia for anyone stranded within the icy roads expected. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state can be obtained at drivetexas.org. && $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 3:20 PM CST | Winter Storm Warning | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 69 hr |
Nearby
Winter Storm Watches in Texas, 2021Every winter storm watch in 2021
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.