Alert archive / Texas / Red Flag Warnings in 2021
Red Flag Warning 2, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Mar 24, 2021, 4:18 AM CDT for 8 counties in Texas. It took effect at Mar 25, 2021, 7:00 AM CDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 24, 2021, 4:18 AM CDT (09:18 UTC)
- In effect from
- Mar 25, 2021, 7:00 AM CDT
- Expired
- Mar 25, 2021, 6:00 PM CDT
- In force
- 11 hr
- Issued by
- NWS Brownsville, TX
Counties Brooks County, TX, Cameron County, TX, Hidalgo County, TX, Jim Hogg County, TX, Kenedy County, TX, Starr County, TX, Willacy County, TX, Zapata County, TX
The radar
The Brownsville radar (KBRO), 118 km from the middle of the area, began a volume at 09:19 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
Brownsville Intl, TX (KBRO), launched 00:00Z, 9.3 hours before the alert went out and 120 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
- 627 J/kg
- Mixed-layer CIN
- -211 J/kg
- Mixed-layer LCL
- 1173 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- -103 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -3.4
The text
As transmitted.
413 WWUS84 KBRO 240918 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 418 AM CDT Wed Mar 24 2021 ...Rapid Growth and Spread of Wildfires Possible Thursday.... .A dry cold front will surge through deep south Texas Thursday morning allowing very low relative humidity values to develop and strong winds to develop in the wake of the front. Explosive spread and growth of any wildfire that are sparked can be expected with extremely dry and abundant fuels. TXZ248>257-351-353-241730- /O.UPG.KBRO.FW.A.0002.210325T1400Z-210325T2300Z/ /O.NEW.KBRO.FW.W.0002.210325T1400Z-210325T2300Z/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 418 AM CDT Wed Mar 24 2021 ...RED FLAG WARNING IN EFFECT FROM 9 AM TO 6 PM CDT THURSDAY FOR LOW HUMIDITY AND STRONG WINDS FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 351, AND 353... The National Weather Service in Brownsville has issued a Red Flag Warning, which is in effect from 9 AM to 6 PM CDT Thursday. The Fire Weather Watch is no longer in effect. * WIND...Northwest 15 to 30 mph gusts near 40 mph. * HUMIDITY...10 to 20 percent, 25 to 30 percent along the immediate coast. * HIGHEST THREAT...All of Deep South Texas. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means critical fire weather conditions are occurring now...or will shortly. In general...these conditions include sustained 20 foot winds of 25 MPH or greater...humidity ranging from below 25 percent in Zapata County to below 45 percent along the coast...each lasting for 2 hours or longer... and cured fuels. Humidity below 25 percent in most areas will trigger fire danger at lower wind speeds. Detailed decision tables are found at HTTP://WEATHER.GOV/RGV/?N=MAPCOLORS#FIRE. && $$ 63
5 follow-up statements
602 WWUS84 KBRO 241633 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 1133 AM CDT Wed Mar 24 2021 ...Rapid Growth and Spread of Wildfires Possible Thursday.... .A dry cold front will surge through deep south Texas Thursday morning allowing very low relative humidity values to develop and strong winds to develop in the wake of the front. Explosive spread and growth of any wildfire that are sparked can be expected with extremely dry and abundant fuels. TXZ248>257-351-353-250045- /O.CON.KBRO.FW.W.0002.210325T1400Z-210325T2300Z/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 1133 AM CDT Wed Mar 24 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 6 PM CDT THURSDAY FOR LOW HUMIDITY AND STRONG WINDS FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 351, AND 353... * WIND...Northwest 15 to 30 mph gusts near 40 mph. * HUMIDITY...10 to 20 percent, 25 to 30 percent along the immediate coast. * HIGHEST THREAT...All of Deep South Texas. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means critical fire weather conditions are occurring now...or will shortly. In general...these conditions include sustained 20 foot winds of 25 MPH or greater...humidity ranging from below 25 percent in Zapata County to below 45 percent along the coast...each lasting for 2 hours or longer... and cured fuels. Humidity below 25 percent in most areas will trigger fire danger at lower wind speeds. Detailed decision tables are found at HTTP://WEATHER.GOV/RGV/?N=MAPCOLORS#FIRE. && $$
281 WWUS84 KBRO 250052 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 752 PM CDT Wed Mar 24 2021 ...Rapid Growth and Spread of Wildfires Likely Thursday.... .A dry cold front will surge through Deep South Texas Thursday morning. The passage of this dry cold front will allow very low relative humidity values and strong winds to develop in the wake of the front. Explosive spread and growth of any wildfire that are sparked can be expected with extremely dry and abundant fuels. TXZ248>257-351-353-250900- /O.CON.KBRO.FW.W.0002.210325T1400Z-210325T2300Z/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 752 PM CDT Wed Mar 24 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 6 PM CDT THURSDAY FOR LOW HUMIDITY AND STRONG WINDS FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 351, AND 353... * WIND...Northwest 15 to 25 mph with gusts to 30 to 35 mph. * HUMIDITY...10 to 20 percent inland, 25 to 35 percent along the immediate coast. * HIGHEST THREAT...All of Deep South Texas. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means critical fire weather conditions are occurring now...or will shortly. In general...these conditions include sustained 20 foot winds of 25 MPH or greater...humidity ranging from below 25 percent in Zapata County to below 45 percent along the coast...each lasting for 2 hours or longer... and cured fuels. Humidity below 25 percent in most areas will trigger fire danger at lower wind speeds. Detailed decision tables are found at HTTP://WEATHER.GOV/RGV/?N=MAPCOLORS#FIRE. && $$
984 WWUS84 KBRO 250917 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 417 AM CDT Thu Mar 25 2021 ...Rapid Growth and Spread of Wildfires Likely Today.... .A dry cold front will surge through Deep South Texas this morning. The passage of this dry cold front will allow very low relative humidity values and strong winds to develop in the wake of the front. Explosive spread and growth of any wildfire that are sparked can be expected with extremely dry and abundant fuels. TXZ248>257-351-353-251730- /O.EXT.KBRO.FW.W.0002.210325T1200Z-210325T2300Z/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 417 AM CDT Thu Mar 25 2021 ...RED FLAG WARNING NOW IN EFFECT FROM 7 AM THIS MORNING UNTIL 6 PM CDT THIS EVENING FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 351, AND 353... * WIND...Northwest 15 to 25 mph with gusts to 30 to 35 mph. * HUMIDITY...10 to 20 percent inland, 25 to 35 percent along the immediate coast. * HIGHEST THREAT...All of Deep South Texas. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means critical fire weather conditions are occurring now...or will shortly. In general...these conditions include sustained 20 foot winds of 25 MPH or greater...humidity ranging from below 25 percent in Zapata County to below 45 percent along the coast...each lasting for 2 hours or longer... and cured fuels. Humidity below 25 percent in most areas will trigger fire danger at lower wind speeds. Detailed decision tables are found at HTTP://WEATHER.GOV/RGV/?N=MAPCOLORS#FIRE. && $$
928 WWUS84 KBRO 251903 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 203 PM CDT Thu Mar 25 2021 ...Threat of Rapid Growth and Spread of Wildfires Continues This Afternoon.... .Very dry air and breezy to strong northerly winds have developed behind a cold front that pushed through Deep South Texas this morning. The combination of these strong winds, very low relative humidity values, and cured fuels will result in critical fire weather conditions through the remainder of the afternoon. Explosive spread and growth of any wildfire that are sparked can be expected with extremely dry and abundant fuels. TXZ248>257-351-353-252300- /O.CON.KBRO.FW.W.0002.000000T0000Z-210325T2300Z/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 203 PM CDT Thu Mar 25 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 351, AND 353... * WIND...Northwest 15 to 25 mph with gusts to 30 to 35 mph. * HUMIDITY...10 to 20 percent inland, 25 to 35 percent along the immediate coast. * HIGHEST THREAT...All of Deep South Texas. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means critical fire weather conditions are occurring now...or will shortly. In general...these conditions include sustained 20 foot winds of 25 MPH or greater...humidity ranging from below 25 percent in Zapata County to below 45 percent along the coast...each lasting for 2 hours or longer... and cured fuels. Humidity below 25 percent in most areas will trigger fire danger at lower wind speeds. Detailed decision tables are found at HTTP://WEATHER.GOV/RGV/?N=MAPCOLORS#FIRE. && $$ Mejia
869 WWUS84 KBRO 252306 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 606 PM CDT Thu Mar 25 2021 ...Critical Fire Weather Conditions Ending... .Winds have diminished with relative humidity continuing rise this evening. TXZ248>257-351-353-260015- /O.EXP.KBRO.FW.W.0002.000000T0000Z-210325T2300Z/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- 606 PM CDT Thu Mar 25 2021 ...RED FLAG WARNING HAS EXPIRED FOR LOW HUMIDITY AND STRONG 20-FOOT WIND FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 351, AND 353... Winds will continue to diminish this evening and overnight and shift out of the east. Humidity levels will gradually rebound above fire weather criteria through this evening. Overall conditions are expected to improve through this evening and overnight. Be sure to follow the burn bans that are in effect. $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 3:04 AM CDT | Marine Dense Fog Advisory | BRO | 7 hr | |
| Mar 24, 6:51 PM CDT | Marine Dense Fog Advisory | BRO | 10 hr |
Nearby
Red Flag Warnings in Texas, 2021Every red flag warning 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.