Alert archive / Texas / Red Flag Warnings in 2018
Red Flag Warning 5, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Dec 12, 2018, 1:50 PM CST for 19 counties in Texas. It took effect at Dec 13, 2018, 11:00 AM CST. It was in force for 8 hr. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 12, 2018, 1:50 PM CST (19:50 UTC)
- In effect from
- Dec 13, 2018, 11:00 AM CST
- Expired
- Dec 13, 2018, 7:00 PM CST
- In force
- 8 hr
- Issued by
- NWS Austin/San Antonio, TX
Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Gonzales County, TX, Guadalupe County, TX, Karnes County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 19:49 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 |
|---|---|---|---|
| Dec 13, 12:01 PM CST | NON-TSTM WND GST 62 | 2 Wnw Del Rio, TX | ASOS STATION DRT, DEL RIO INTL AIRPORT. |
| Dec 13, 12:52 PM CST | NON-TSTM WND GST 58 | 1 N Laughlin Afb, TX | ASOS STATION DLF, LAUGHLIN AFB. |
| Dec 13, 3:55 PM CST | NON-TSTM WND GST 60 | 23 Sw Asherton, TX | AWOS STATION FTN, FAITH RANCH ARPT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDLF), launched 12:00Z, 7.8 hours before the alert went out and 169 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
- 1077 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
248 WWUS84 KEWX 121950 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 150 PM CST Wed Dec 12 2018 ...Critical Fire Weather Conditions Thursday... .Very strong northwest flow will develop Thursday. Wind gusts between 40 and 50 mph will be possible. This will result in a critical fire weather day when combined with marginally low relative humidity and cured winter fuels. TXZ183-202-203-217>219-228-131200- /O.UPG.KEWX.FW.A.0006.181213T1700Z-181214T0100Z/ /O.NEW.KEWX.FW.W.0005.181213T1700Z-181214T0100Z/ Val Verde-Kinney-Uvalde-Maverick-Zavala-Frio-Dimmit- 150 PM CST Wed Dec 12 2018 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CST THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR PORTIONS OF THE RIO GRANDE PLAINS...WESTERN HILL COUNTRY...AND WINTER GARDEN REGIONS... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM CST Thursday. * AFFECTED AREA...Val Verde, Kinney, Uvalde, Maverick, Zavala, Frio, and Dimmit counties. * WIND...Northwest 25 to 35 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 30 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
3 follow-up statements
404 WWUS84 KEWX 131134 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 534 AM CST Thu Dec 13 2018 ...CRITICAL CONDITIONS THIS AFTERNOON AND EARLY EVENING... .Very strong northwest winds will develop this afternoon. Wind gusts between 40 and 50 mph will be possible. This will result in a critical fire weather day when combined with marginally low relative humidity and cured winter fuels. TXZ183-202-203-217>219-228-132300- /O.CON.KEWX.FW.W.0005.181213T1700Z-181214T0100Z/ Val Verde-Kinney-Uvalde-Maverick-Zavala-Frio-Dimmit- 534 AM CST Thu Dec 13 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF THE RIO GRANDE PLAINS...WESTERN HILL COUNTRY...AND WINTER GARDEN REGIONS... * AFFECTED AREA...Val Verde, Kinney, Uvalde, Maverick, Zavala, Frio, and Dimmit Counties. * WIND...Northwest 25 to 35 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 28 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
927 WWUS84 KEWX 131817 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 1217 PM CST Thu Dec 13 2018 ...CRITICAL CONDITIONS THIS AFTERNOON AND EARLY EVENING... .Very strong northwest winds will develop this afternoon. Wind gusts between 40 and 50 mph will be occur, possibly up to 60 mph near the Rio Grande. This will result in a critical fire weather day when combined with low relative humidity and cured winter fuels. TXZ184-185-187-204>207-220>224-140100- /O.EXA.KEWX.FW.W.0005.000000T0000Z-181214T0100Z/ Edwards-Real-Bandera-Medina-Bexar-Comal-Guadalupe-Atascosa-Wilson- Karnes-Gonzales-De Witt- 1217 PM CST Thu Dec 13 2018 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CST THIS EVENING FOR PORTIONS OF THE HILL COUNTRY...RIO GRANDE...WINTER GARDEN AND NEAR AND EAST OF I-35 FOR STRONG WIND AND LOW RELATIVE HUMIDITY... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning, which is in effect until 7 PM CST this evening. * AFFECTED AREA...Val Verde, Kinney, Uvalde, Maverick, Zavala, Frio, and Dimmit Counties. * WIND...Northwest 25 to 35 mph with gusts 40 to 50 mph. * RELATIVE HUMIDITY...25 to 35 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ TXZ183-202-203-217>219-228-140100- /O.CON.KEWX.FW.W.0005.000000T0000Z-181214T0100Z/ Val Verde-Kinney-Uvalde-Maverick-Zavala-Frio-Dimmit- 1217 PM CST Thu Dec 13 2018 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CST THIS EVENING FOR PORTIONS OF THE HILL COUNTRY...RIO GRANDE...WINTER GARDEN AND NEAR AND EAST OF I-35 FOR STRONG WIND AND LOW RELATIVE HUMIDITY... * AFFECTED AREA...Val Verde, Kinney, Uvalde, Maverick, Zavala, Frio, and Dimmit Counties. * WIND...Northwest 25 to 35 mph with gusts 40 to 60 mph. * RELATIVE HUMIDITY...25 to 30 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
047 WWUS84 KEWX 132204 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 404 PM CST Thu Dec 13 2018 TXZ183-184-202-203-217>219-228-140615- /O.NEW.KEWX.FW.A.0007.181214T1700Z-181215T0000Z/ /O.CON.KEWX.FW.W.0005.000000T0000Z-181214T0100Z/ Val Verde-Edwards-Kinney-Uvalde-Maverick-Zavala-Frio-Dimmit- 404 PM CST Thu Dec 13 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CST THIS EVENING FOR VERY STRONG WINDS AND LOW RELATIVE HUMIDITY. FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY... The National Weather Service in Austin/San Antonio has issued a Fire Weather Watch, which is in effect from Friday morning through Friday afternoon. * AFFECTED AREA...Val Verde, Edwards, Kinney, Uvalde, Maverick, Zavala, Frio, and Dimmit Counties. * WIND...Northwest 25 to 35 mph with gusts 40 to 50 mph through the evening. Northwest 20 to 30 mph with gusts to 40 mph on Friday. * RELATIVE HUMIDITY...30 to 50 percent through the evening. 20 to 30 percent on Friday. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ TXZ185-187-204>207-220>224-140100- /O.CON.KEWX.FW.W.0005.000000T0000Z-181214T0100Z/ Real-Bandera-Medina-Bexar-Comal-Guadalupe-Atascosa-Wilson-Karnes- Gonzales-De Witt- 404 PM CST Thu Dec 13 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CST THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY... * AFFECTED AREA...Real, Bandera, Medina, Bexar, Comal, Guadalupe, Atascosa, Wilson, Karnes, Gonzales, and De Witt Counties. * WIND...Northwest 25 to 35 mph with gusts 40 to 50 mph through the evening. * RELATIVE HUMIDITY...25 to 35 percent through the evening. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 12, 2:00 PM CST | Wind Advisory | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 49 hr |
Nearby
Red Flag Warnings in Texas, 2018Every red flag warning in 2018
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.