Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 19, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Dec 1, 2011, 4:45 AM CST for 8 counties in Texas. It took effect at Dec 1, 2011, 12:00 PM CST. It was in force for 6 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
- Dec 1, 2011, 4:45 AM CST (10:45 UTC)
- In effect from
- Dec 1, 2011, 12:00 PM CST
- Expired
- Dec 1, 2011, 6:00 PM CST
- In force
- 6 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 10:48 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, 10.8 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1113 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
958 WWUS84 KBRO 011045 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 445 AM CST THU DEC 1 2011 ...STRONG WINDS AND SLOW RELATIVE HUMIDITY RECOVERY TO INCREASE WILDFIRE THREAT TODAY... .A DEVELOPING STORM SYSTEM OVER THE DESERT SOUTHWEST WILL INTERACT WITH HIGH PRESSURE OVER THE SOUTHERN STATES INCREASING THE SOUTHEAST WINDS ACROSS ALL REGIONS OF DEEP SOUTH TEXAS THIS AFTERNOON. THE MOISTURE LEVELS ARE EXPECTED TO BE SLOW IN RECOVERING AND WITH TEMPERATURES RISING INTO THE 80S RELATIVE HUMIDITY LEVELS ARE EXPECTED TO REMAIN MODERATELY LOW. THE COMBINATION OF THE STRONG WINDS AND LOW AFTERNOON HUMIDITIES WILL PRODUCE AN ELEVATED RISK OF WILDFIRE GROWTH AND SPREAD TODAY. TXZ248>257-020000- /O.UPG.KBRO.FW.A.0017.111201T1700Z-111201T2300Z/ /O.NEW.KBRO.FW.W.0019.111201T1800Z-111202T0000Z/ ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 445 AM CST THU DEC 1 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 248...249...250...251...252...253...254...255...256 AND 257... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WIND...THE 20 FOOT WINDS WILL INCREASE FROM THE SOUTHEAST FROM 20 TO 25 MPH WITH SOME GUSTS POSSIBLE IN THE 25 TO 30 MPH POSSIBLE. * HUMIDITY...THE RELATIVE HUMIDITY VALUES WILL FALL INTO THE 25 AND 35 PERCENT RANGE ACROSS ZAPATA...JIM HOGG...HIDALGO AND STARR COUNTIES BY THIS AFTERNOON. ELSEWHERE THE HUMIDITY VALUES WILL RANGE FROM 40 TO 50 PERCENT ACROSS KENEDY...BROOKS... WILLACY AND CAMERON COUNTIES BY THIS AFTERNOON. * 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 MORE... 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. && $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 4:25 AM CST | Small Craft Advisory for Winds | BRO | 14 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.