Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 4, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Apr 4, 2011, 4:32 AM CDT for 8 counties in Texas. It took effect at Apr 4, 2011, 12:00 PM CDT. It was in force for 10 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 4, 2011, 4:32 AM CDT (09:32 UTC)
- In effect from
- Apr 4, 2011, 12:00 PM CDT
- Expired
- Apr 4, 2011, 10:00 PM CDT
- In force
- 10 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 09:31 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, 9.5 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
- 1989 J/kg
- Mixed-layer CIN
- -343 J/kg
- Mixed-layer LCL
- 1166 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
631 WWUS84 KBRO 040932 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 432 AM CDT MON APR 4 2011 ...ROBUST WILDFIRE CONDITIONS EXPECTED TODAY... .A COLD FRONT WILL SWEEP THROUGH DEEP SOUTH TEXAS THIS MORNING. WINDS WILL INCREASE TO BETWEEN 25 AND 35 MPH FROM THE NORTHWEST AND NORTH BEHIND THE FRONT...USHERING IN MUCH DRIER AIR. THESE WINDS WILL COMBINE WITH LOWER RELATIVE HUMIDITY VALUES AND CURED FUELS TO GREATLY ENHANCE THE POTENTIAL FOR WILDFIRE ACTIVITY IN DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY TODAY. TXZ248>253-041745- /O.UPG.KBRO.FW.A.0005.110404T1700Z-110405T0300Z/ /O.NEW.KBRO.FW.W.0004.110404T1700Z-110405T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO- 432 AM CDT MON APR 4 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 10 PM CDT THIS EVENING FOR ALL OF DEEP SOUTH TEXAS. NORTHWESTERLY TO NORTHERLY WINDS OF 25 TO 35 MPH WILL DEVELOP AS A COLD FRONT PASSES THROUGH THIS MORNING...WITH RELATIVE HUMIDITY VALUES FALLING TO BETWEEN 10 AND 30 PERCENT DUE TO AN INFLUX OF DRIER AIR PROVIDED BY THE WINDS. THESE WINDS WILL COMBINE WITH THE MUCH DRIER ATMOSPHERE AND ABUNDANT CURED FUELS TO PRODUCE WEATHER CONDITIONS MUCH MORE SUITABLE FOR WILDFIRE ACTIVITY TODAY. LESS ROBUST WILDFIRE CONDITIONS ARE ANTICIPATED LATER TONIGHT AS WINDS GRADUALLY DIMINISH...AND RELATIVE HUMIDITY PERCENTAGES RISE. 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. && $$ TXZ254>257-041745- /O.NEW.KBRO.FW.W.0004.110404T1700Z-110405T0300Z/ INLAND WILLACY-INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 432 AM CDT MON APR 4 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 10 PM CDT THIS EVENING FOR ALL OF DEEP SOUTH TEXAS. NORTHWESTERLY TO NORTHERLY WINDS OF 25 TO 35 MPH WILL DEVELOP AS A COLD FRONT PASSES THROUGH THIS MORNING...WITH RELATIVE HUMIDITY VALUES FALLING TO BETWEEN 10 AND 30 PERCENT DUE TO AN INFLUX OF DRIER AIR PROVIDED BY THE WINDS. THESE WINDS WILL COMBINE WITH THE MUCH DRIER ATMOSPHERE AND ABUNDANT CURED FUELS TO PRODUCE WEATHER CONDITIONS MUCH MORE SUITABLE FOR WILDFIRE ACTIVITY TODAY. LESS ROBUST WILDFIRE CONDITIONS ARE ANTICIPATED LATER TONIGHT AS WINDS GRADUALLY DIMINISH...AND RELATIVE HUMIDITY PERCENTAGES RISE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
2 follow-up statements
768 WWUS84 KBRO 041822 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 122 PM CDT MON APR 4 2011 ...CRITICAL WILDFIRE BEHAVIOR CONDITIONS EXPECTED TODAY... .A COLD FRONT WILL SWEEP THROUGH DEEP SOUTH TEXAS THIS AFTERNOON. WINDS WILL INCREASE TO BETWEEN 25 AND 35 MPH FROM THE NORTHWEST AND NORTH BEHIND THE FRONT...USHERING IN MUCH DRIER AIR. THESE WINDS WILL COMBINE WITH LOWER RELATIVE HUMIDITY VALUES AND CURED FUELS TO GREATLY ENHANCE THE POTENTIAL FOR ERRATIC WILDFIRE BEHAVIOR IN DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY TODAY. TXZ248>257-050200- /O.CON.KBRO.FW.W.0004.000000T0000Z-110405T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 122 PM CDT MON APR 4 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING. NORTHWESTERLY TO NORTHERLY WINDS OF 25 TO 35 MPH WILL DEVELOP AS A COLD FRONT PASSES THROUGH THIS AFTERNOON...WITH RELATIVE HUMIDITY VALUES FALLING TO BETWEEN 10 AND 30 PERCENT DUE TO AN INFLUX OF DRIER AIR PROVIDED BY THE WINDS. THESE WINDS WILL COMBINE WITH THE MUCH DRIER ATMOSPHERE AND ABUNDANT CURED FUELS TO PRODUCE WEATHER CONDITIONS MUCH MORE SUITABLE FOR ERRATIC WILDFIRE BEHAVIOR ACTIVITY TODAY. LESS ROBUST WILDFIRE CONDITIONS ARE ANTICIPATED LATER TONIGHT AS WINDS GRADUALLY DIMINISH...AND RELATIVE HUMIDITY PERCENTAGES RISE. 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. && $$
064 WWUS84 KBRO 050305 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 1005 PM CDT MON APR 4 2011 ...RED FLAG WARNING FOR DEEP SOUTH TEXAS EXPIRED... .NORTH WINDS HAVE DECREASED ACROSS DEEP SOUTH TEXAS IN THE WAKE OF A COLD FRONT...WITH CONDITIONS BELOW RED FLAG WARNING CRITERIA AND THE RED FLAG WARNING EXPIRING AS SCHEDULED. TXZ248>257-050415- /O.EXP.KBRO.FW.W.0004.000000T0000Z-110405T0300Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 1005 PM CDT MON APR 4 2011 ...RED FLAG WARNING HAS EXPIRED... THE RED FLAG WARNING IS NO LONGER IN EFFECT. $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 1:05 AM CDT | Small Craft Advisory for Winds | BRO | 24 hr | |
| Apr 4, 4:18 AM CDT | Wind Advisory | BRO | Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more | 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.