Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 2, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Jan 31, 2011, 2:27 PM CST for 8 counties in Texas. It took effect at Feb 1, 2011, 9:00 AM CST. It was in force for 9 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
- Jan 31, 2011, 2:27 PM CST (20:27 UTC)
- In effect from
- Feb 1, 2011, 9:00 AM CST
- Expired
- Feb 1, 2011, 6:00 PM CST
- In force
- 9 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 20:28 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, 8.5 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
- 82 J/kg
- Mixed-layer CIN
- -241 J/kg
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -104 m²/s²
- 0-3 km storm-relative helicity
- -66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
527 WWUS84 KBRO 312027 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 227 PM CST MON JAN 31 2011 ...CRITICAL CONDITIONS FOR WILDFIRE BEHAVIOR ACTIVITY TUESDAY... .A DRY LINE WILL USHER IN MUCH DRIER AND VERY WINDY CONDITIONS ACROSS ALL OF DEEP SOUTH TEXAS TUESDAY. HUMIDITY LEVELS WILL CRASH DURING THE DAY COMBINING WITH CURED FUELS AND STRONG SURFACE WINDS TO ENHANCE WILDFIRE GROWTH AND SPREAD TUESDAY. AN ARCTIC FRONT BARRELS THROUGH DEEP SOUTH TEXAS TUESDAY EVENING DROPPING TEMPERATURES 30 TO 40 DEGREES AND LOWERING DEW POINTS INTO THE TEENS BY WEDNESDAY MORNING. TXZ248>255-010400- /O.UPG.KBRO.FW.A.0002.110201T1500Z-110201T2300Z/ /O.NEW.KBRO.FW.W.0002.110201T1500Z-110202T0000Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON- 227 PM CST MON JAN 31 2011 ...RED FLAG WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. RELATIVE HUMIDITY LEVELS TO FALL INTO THE 15 TO 25 PERCENT RANGE ACROSS THE WEST AND 25 TO 35 PERCENT EAST OF HIGHWAY 281 TUESDAY AFTERNOON. DOWNSLOPING WEST TO NORTHWEST TO INCREASE TO 20 TO 30 MPH WITH GUSTS EXCEEDING 40 MPH. THE COMBINATION OF LOW RH VALUES AND STRONG GUSTY NORTHWEST WINDS WILL PROVIDE EXTREME FIRE DANGER ACROSS THE REGION. 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. && $$ TXZ256-257-010400- /O.NEW.KBRO.FW.W.0002.110201T1500Z-110202T0000Z/ COASTAL WILLACY-COASTAL CAMERON- 227 PM CST MON JAN 31 2011 ...RED FLAG WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY. RELATIVE HUMIDITY LEVELS TO FALL INTO THE 25 TO 35 PERCENT RANGE ACROSS THE COASTAL REGIONS OF THE LOWER RIO GRANDE VALLEY WITH WEST TO NORTHWEST INCREASING 20 TO 30 MPH WITH GUSTS EXCEEDING 40 MPH. THE COMBINATION OF LOW RH VALUES AND STRONG GUSTY NORTHWEST WINDS WILL PROVIDE AN EXTREME FIRE DANGER ACROSS THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ GB
1 follow-up statement
429 WWUS84 KBRO 010937 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 337 AM CST TUE FEB 1 2011 ...CONDITIONS VERY FAVORABLE FOR WILDFIRE GROWTH AND SPREAD... .THE PASSAGE OF A COLD FRONT THROUGH DEEP SOUTH TEXAS EARLY THIS MORNING WILL CAUSE STRONG SURFACE WINDS TO DEVELOP IN THE WAKE OF THIS FRONT. MUCH COLDER AND DRIER AIR WILL POUR INTO THE RIO GRANDE VALLEY ON THESE WINDS...CAUSING A RAPID DROP IN RELATIVE HUMIDITY VALUES. THE STRONG WINDS WILL COMBINE WITH LOW RELATIVE HUMIDITY PERCENTAGES AND CURED FUELS TO PRODUCE CONDITIONS VERY FAVORABLE FOR RAPID WILDFIRE GROWTH AND SPREAD SHOULD ANY WILDFIRE ACTIVITY INITIATE. TXZ248>257-011700- /O.CON.KBRO.FW.W.0002.110201T1500Z-110202T0000Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 337 AM CST TUE FEB 1 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING FOR ALL OF DEEP SOUTH TEXAS. STRONGER WINDS AND MUCH DRIER AIR WILL SURGE INTO DEEP SOUTH TEXAS TODAY DUE TO THE PASSAGE OF A COLD FRONT THIS MORNING AND A STRONG ARCTIC HIGH PRESSURE SYSTEM PLUNGING SOUTH INTO TEXAS. RELATIVE HUMIDITY VALUES WILL FALL TO BETWEEN 20 AND 30 PERCENT...WHILE 20 FOOT WINDS FROM THE NORTHWEST TO NORTH PREVAIL BETWEEN 20 AND 30 MPH. THESE RELATIVE HUMIDITY PERCENTAGES WILL COMBINE WITH THE 20 FOOT WINDS AND CURED FUELS TO PRODUCE CONDITIONS VERY FAVORABLE FOR RAPID WILDFIRE GROWTH AND SPREAD TODAY. 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. $$ TOMASELLI
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 31, 2:14 AM CST | Marine Dense Fog Advisory | BRO | 10 hr | |
| Jan 31, 4:05 AM CST | Fire Weather Watch | BRO | Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more | 10 hr |
| Jan 31, 8:14 AM CST | Dense Fog Advisory | BRO | Cameron, Willacy | 106 min |
| Jan 31, 2:57 PM CST | Gale Watch | BRO | 12 hr | |
| Jan 31, 2:57 PM CST | Small Craft Advisory | BRO | 12 hr | |
| Jan 31, 2:57 PM CST | Small Craft Advisory for Winds | BRO | 12 hr | |
| Jan 31, 3:33 PM CST | Freeze Watch | BRO | Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more | 13 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.