Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 1, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Jan 9, 2011, 3:56 PM CST for Hidalgo County, Starr County, Zapata County, Texas. It was in force for 3 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 9, 2011, 3:56 PM CST (21:56 UTC)
- Expired
- Jan 9, 2011, 7:00 PM CST
- In force
- 3 hr
- Issued by
- NWS Brownsville, TX
Counties Hidalgo County, TX, Starr County, TX, Zapata County, TX
The radar
The Brownsville radar (KBRO), 151 km from the middle of the area, began a volume at 21:59 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, 9.9 hours before the alert went out and 154 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
- 964 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 511 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 370 m²/s²
- 0-3 km storm-relative helicity
- 451 m²/s²
- Significant tornado parameter
- 2.6
- Supercell composite
- 14.2
The text
As transmitted, in the capitals the NWS used until 2016.
764 WWUS84 KBRO 092156 RFWBRO URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BROWNSVILLE TX 356 PM CST SUN JAN 9 2011 ...RED FLAG WARNING FOR A PORTION OF DEEP SOUTH TEXAS... .MODERATE WEST TO NORTHWEST WINDS WITH FREQUENT BREEZY GUSTS WILL COMBINE WITH CURED FUELS AND VERY DRY AIR WITH LOW RELATIVE HUMIDITY VALUES TO PRODUCE CONDITIONS FAVORABLE FOR WILDFIRE GROWTH AND DEVELOPMENT LATE THIS AFTERNOON AND EARLY THIS EVENING. TXZ248-252-253-100100- /O.NEW.KBRO.FW.W.0001.110109T2156Z-110110T0100Z/ ZAPATA-STARR-HIDALGO- 356 PM CST SUN JAN 9 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CST THIS EVENING... THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CST THIS EVENING FOR ZAPATA... STARR...AND HIDALGO COUNTY. VERY DRY AIR WITH LOW RELATIVE HUMIDITY VALUES IS POURING INTO THE SOUTHWEST PORTION OF DEEP SOUTH TEXAS ON MODERATE WEST TO NORTHWEST WINDS WITH OCCASIONAL BREEZY GUSTS. THESE WINDS AND DRY AIR WILL COMBINE WITH ABUNDANT CURED FUELS TO PRODUCE CONDITIONS THAT ARE FAVORABLE FOR WILDFIRE GROWTH AND DEVELOPMENT SHOULD ANY WILDFIRE ACTIVITY INITIATE. WEST TO NORTHWEST WINDS OF 15 TO 20 MPH WITH FREQUENT GUSTS OF 25 TO 30 MPH ARE EXPECTED THROUGH THE NEXT FEW HOURS...WITH RELATIVE HUMIDITY VALUES OF ROUGHLY 15 TO 25 PERCENT. WILDFIRE CONDITIONS WILL BECOME LESS ROBUST LATER IN THE EVENING AS WINDS DIMINISH AND RELATIVE HUMIDITY PERCENTAGES INCREASE. 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 9, 2:49 AM CST | Severe Thunderstorm Warning | BRO | Zapata | 26 min |
| Jan 9, 3:48 AM CST | Severe Thunderstorm Warning | BRO | Brooks | 42 min |
| Jan 9, 4:10 AM CST | Special Marine Warning | BRO | 3 hr | |
| Jan 9, 4:24 AM CST | Severe Thunderstorm Warning | BRO | Kenedy | 51 min |
| Jan 9, 5:30 AM CST | Areal Flood Advisory | BRO | Brooks, Hidalgo, Kenedy, Willacy | 2 hr |
| Jan 9, 6:38 AM CST | Special Marine Warning | BRO | 2 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.