Alert archive / Texas / Red Flag Warnings in 2017
Red Flag Warning 2, NWS Brownsville, TX
NWS Brownsville, TX issued this red flag warning at Feb 21, 2017, 1:23 PM CST for 8 counties in Texas. It was in force for 5 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
- Feb 21, 2017, 1:23 PM CST (19:23 UTC)
- Expired
- Feb 21, 2017, 6:00 PM CST
- In force
- 5 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 nearest sounding before it
Brownsville Intl, TX (KBRO), launched 12:00Z, 7.4 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
- 1621 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 220 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
873 WWUS84 KBRO 211923 RFWBRO URGENT - FIRE WEATHER MESSAGE National Weather Service Brownsville TX 123 PM CST Tue Feb 21 2017 ...CRITICAL FIRE WEATHER EXPECTED ACROSS PORTIONS OF DEEP SOUTH TEXAS THIS AFTERNOON... .THE COMBINATION OF STRONG NORTHWEST WINDS...ALONG WITH VERY LOW RELATIVE HUMIDITY VALUES...WILL CREATE CONDITIONS FAVORABLE FOR ERRATIC TO EXTREME WILDFIRE GROWTH AND SPREAD THROUGH THIS AFTERNOON. TXZ248>255-220000- /O.NEW.KBRO.FW.W.0002.170221T1923Z-170222T0000Z/ Zapata-Jim Hogg-Brooks-Kenedy-Starr-Hidalgo-Inland Willacy- Inland Cameron- 123 PM CST Tue Feb 21 2017 ...RED FLAG WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING FOR STRONG WINDS AND LOW RELATIVE 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 until 6 PM CST this evening. * AFFECTED AREA...Fire weather zones 248, 249, 250, 251, 252, 253, 254, and 255. * WIND...NORTHWEST 20 TO 25 MPH WITH GUSTS TO 35 MPH. * HUMIDITY...10 TO 15 PERCENT. * THUNDERSTORMS...NOT EXPECTED. * HIGHEST THREAT...IS LOCATED ACROSS THE MIDDLE AND UPPER PORTIONS OF THE RIO GRANDE VALLEY...INCLUDING THE NORTHWEST RANCHLANDS. * IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. AVOID CONTACT BETWEEN HOT OBJECTS AND GRASSES...WHICH CAN BURN HOT AND QUICKLY. 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 longer... 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. && $$ BIRCHFIELD
1 follow-up statement
963 WWUS84 KBRO 220019 AAA RFWBRO URGENT - FIRE WEATHER MESSAGE...UPDATED National Weather Service Brownsville TX 619 PM CST Tue Feb 21 2017 ...RED FLAG WARNING NO LONGER IN EFFECT... .WINDS HAVE STARTED TO DIMINISH AND RELATIVE HUMIDITY PERCENTAGES HAVE STARTED TO RISE...AND THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE AT 6 PM CST THIS EVENING. TXZ248>255-220130- /O.EXP.KBRO.FW.W.0002.000000T0000Z-170222T0000Z/ Zapata-Jim Hogg-Brooks-Kenedy-Starr-Hidalgo-Inland Willacy- Inland Cameron- 619 PM CST Tue Feb 21 2017 ...RED FLAG WARNING HAS EXPIRED FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 248, 249, 250, 251, 252, 253, 254, AND 255... THE COMBINATION OF LIGHTER WINDS AND HIGHER RELATIVE HUMIDITY VALUES WILL RESULT IN A LOW RISK OF WILDFIRE DANGER AND SPREAD THROUGH THE OVERNIGHT HOURS TONIGHT. $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 3:17 AM CST | Small Craft Advisory for Winds | BRO | 12 hr |
Nearby
Red Flag Warnings in Texas, 2017Every red flag warning in 2017
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.