Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 7, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Apr 26, 2011, 12:38 PM CDT for 8 counties in Texas. It took effect at Apr 27, 2011, 10:00 AM CDT. It was in force for 12 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
- Apr 26, 2011, 12:38 PM CDT (17:38 UTC)
- In effect from
- Apr 27, 2011, 10:00 AM CDT
- Expired
- Apr 27, 2011, 10:00 PM CDT
- In force
- 12 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 17:40 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 12:00Z, 5.6 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
- 3127 J/kg
- Mixed-layer CIN
- -340 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
495 WWUS84 KBRO 261738 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 1238 PM CDT TUE APR 26 2011 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED WEDNESDAY... .A WEAK COLD FRONT WILL BRING VERY DRY AIR ACROSS DEEP SOUTH TEXAS LATE WEDNESDAY MORNING INTO EARLY WEDNESDAY AFTERNOON WITH VERY LOW DEW POINTS AND BREEZY NORTHWEST WINDS. EXCEPTIONALLY LOW RELATIVE HUMIDITY...BREEZY WINDS AND VERY WARM AFTERNOON TEMPERATURES...IN COMBINATION WITH EXTREMELY CURED FUELS...WILL GREATLY ENHANCE THE POTENTIAL FOR ERRATIC WILDFIRE BEHAVIOR WEDNESDAY. TXZ248>255-270145- /O.UPG.KBRO.FW.A.0009.110427T1500Z-110427T2200Z/ /O.NEW.KBRO.FW.W.0007.110427T1500Z-110428T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON- 1238 PM CDT TUE APR 26 2011 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 248... 249...250...251...252...253...254 AND 255... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. RELATIVE HUMIDITY LEVELS WILL PLUMMET BELOW 10 PERCENT ACROSS WESTERN AND CENTRAL PORTIONS OF DEEP SOUTH TEXAS...MAINLY ALONG AND WEST OF THE HIGHWAY 281 CORRIDOR AND BELOW 20 PERCENT ACROSS THE COASTAL SECTIONS EAST OF HIGHWAY 281. THIS VERY DRY AIRMASS WILL COMBINE WITH NORTHWEST WINDS IN THE 20 TO 25 MPH RANGE TO CREATE CRITICAL WILDFIRE BEHAVIOR CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ CASTILLO
4 follow-up statements
123 WWUS84 KBRO 270248 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 948 PM CDT TUE APR 26 2011 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED WEDNESDAY... .A WEAK COLD FRONT WILL BRING VERY DRY AIR ACROSS DEEP SOUTH TEXAS LATE WEDNESDAY MORNING INTO WEDNESDAY AFTERNOON WITH VERY LOW DEW POINTS AND BREEZY NORTHWEST WINDS. EXCEPTIONALLY LOW RELATIVE HUMIDITY...BREEZY WINDS AND VERY WARM AFTERNOON TEMPERATURES...IN COMBINATION WITH EXTREMELY CURED FUELS...WILL GREATLY ENHANCE THE POTENTIAL FOR ERRATIC WILDFIRE BEHAVIOR WEDNESDAY. TXZ248>255-271115- /O.CON.KBRO.FW.W.0007.110427T1500Z-110428T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON- 948 PM CDT TUE APR 26 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 248...249...250...251...252...253...254 AND 255. A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM CDT WEDNESDAY. RELATIVE HUMIDITY LEVELS WILL PLUMMET BELOW 10 PERCENT ACROSS THE WESTERN AND CENTRAL PORTIONS OF DEEP SOUTH TEXAS...MAINLY ALONG AND WEST OF THE HIGHWAY 281 CORRIDOR AND BELOW 20 PERCENT ACROSS THE COASTAL SECTIONS EAST OF HIGHWAY 281. THIS VERY DRY AIRMASS WILL COMBINE WITH NORTHWEST WINDS IN THE 20 TO 25 MPH RANGE TO CREATE CRITICAL WILDFIRE BEHAVIOR CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
644 WWUS84 KBRO 270947 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 447 AM CDT WED APR 27 2011 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED TODAY... .A WEAK COLD FRONT WILL BRING VERY DRY AIR ACROSS DEEP SOUTH TEXAS LATE THIS MORNING THROUGH THIS AFTERNOON WITH VERY LOW DEW POINTS AND BREEZY NORTHERLY TO NORTHEASTERLY WINDS. EXCEPTIONALLY LOW RELATIVE HUMIDITY...BREEZY WINDS AND VERY WARM AFTERNOON TEMPERATURES...IN COMBINATION WITH EXTREMELY CURED FUELS...WILL GREATLY ENHANCE THE POTENTIAL FOR ERRATIC WILDFIRE BEHAVIOR TODAY. TXZ248>255-271800- /O.CON.KBRO.FW.W.0007.110427T1500Z-110428T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON- 447 AM CDT WED APR 27 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 248...249...250...251...252...253...254 AND 255... A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM CDT THIS EVENING FOR ALL OF DEEP SOUTH TEXAS EXPECT THE COASTAL PORTIONS OF CAMERON AND WILLACY COUNTY. RELATIVE HUMIDITY VALUES WILL PLUMMET BELOW 10 PERCENT ACROSS THE WESTERN AND CENTRAL PORTIONS OF DEEP SOUTH TEXAS...MAINLY ALONG AND WEST OF THE HIGHWAY 281 CORRIDOR AND BELOW 20 PERCENT ACROSS THE COASTAL SECTIONS EAST OF HIGHWAY 281. THIS VERY DRY AIRMASS WILL COMBINE WITH NORTHERLY TO NORTHEASTERLY WINDS IN THE 20 TO 25 MPH RANGE TO CREATE CRITICAL WILDFIRE BEHAVIOR CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
091 WWUS84 KBRO 271826 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 126 PM CDT WED APR 27 2011 ...CRITICAL FIRE WEATHER CONDITIONS CONTINUE ACROSS DEEP SOUTH TEXAS THIS AFTERNOON THROUGH EARLY THIS EVENING... .A WEAK COLD FRONT WILL CONTINUE TO BRING VERY DRY AIR ACROSS DEEP SOUTH TEXAS THROUGH THIS AFTERNOON WITH VERY LOW DEW POINTS AND BREEZY NORTHERLY TO NORTHEASTERLY WINDS. EXCEPTIONALLY LOW RELATIVE HUMIDITY...BREEZY WINDS AND VERY WARM AFTERNOON TEMPERATURES...IN COMBINATION WITH EXTREMELY CURED FUELS...WILL GREATLY ENHANCE THE POTENTIAL FOR ERRATIC WILDFIRE BEHAVIOR THIS AFTERNOON THROUGH EARLY THIS EVENING. TXZ248>255-280230- /O.CON.KBRO.FW.W.0007.000000T0000Z-110428T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON- 126 PM CDT WED APR 27 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 248...249...250...251...252...253...254 AND 255... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING. RELATIVE HUMIDITY VALUES WILL PLUMMET BELOW 10 PERCENT ACROSS THE WESTERN AND CENTRAL PORTIONS OF DEEP SOUTH TEXAS...MAINLY ALONG AND WEST OF THE HIGHWAY 281 CORRIDOR AND BELOW 20 PERCENT ACROSS THE COASTAL SECTIONS EAST OF HIGHWAY 281. THIS VERY DRY AIRMASS WILL COMBINE WITH NORTH TO NORTHEAST WINDS IN THE 20 TO 25 MPH RANGE TO CREATE CRITICAL WILDFIRE BEHAVIOR CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ CASTILLO
709 WWUS84 KBRO 280311 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 1011 PM CDT WED APR 27 2011 ...FIRE DANGER IMPROVING SLOWLY... TXZ248>255-280415- /O.EXP.KBRO.FW.W.0007.000000T0000Z-110428T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON- 1011 PM CDT WED APR 27 2011 ...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 248...249...250...251...252...253... 254 AND 255... THE RED FLAG WARNING IS NO LONGER IN EFFECT. AS THE SURFACE WINDS WEAKEN AND BECOMING MORE EASTERLY TONIGHT AND THURSDAY THE RELATIVE HUMIDITY VALUES WILL SLOWLY INCREASE AND THE FIRE WEATHER DANGER WILL SLOWLY DIMINISH. $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 3:50 AM CDT | Small Craft Advisory for Winds | BRO | 17 hr |
Nearby
Red Flag Warnings in Texas, 2011Every red flag warning 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.