Alert archive / Texas / Red Flag Warnings in 2013

Red Flag Warning 4, NWS San Angelo, TX

February 21, 201314 counties in Texas

NWS San Angelo, TX issued this red flag warning at Feb 21, 2013, 2:49 AM CST for 14 counties in Texas. It took effect at Feb 21, 2013, 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: Feb 21, 2013, 2:49 AM CST (08:49 UTC)
In effect from: Feb 21, 2013, 12:00 PM CST
Expired: Feb 21, 2013, 6:00 PM CST
In force: 6 hr
Issued by: NWS San Angelo, TX

Counties Callahan County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crockett County, TX, Irion County, TX, McCulloch County, TX, Menard County, TX, Nolan County, TX, Runnels County, TX, Schleicher County, TX, Sterling County, TX, Taylor County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 34 km from the middle of the area, began a volume at 08:48 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

Midland Regional, TX (KMAF), launched 00:00Z, 8.8 hours before the alert went out and 192 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 21 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 860 m above ground
0-6 km bulk shear: 103 kt
0-1 km storm-relative helicity: 451 m²/s²
0-3 km storm-relative helicity: 459 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Angelo, TX wrote its last area forecast discussion before this red flag warning went out at Feb 20, 5:26 PM CST, 9 hours 23 minutes earlier.

Area forecast discussion, Feb 20, 5:26 PM CST, 9 hours 23 minutes before

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Hazardous weather outlook, Feb 20, 2:57 PM CST, 11 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
257 PM CST WED FEB 20 2013

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-212100-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
257 PM CST WED FEB 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS MUCH OF WEST
CENTRAL TEXAS TONIGHT. THE STRONGEST STORMS ARE EXPECTED LATE
TONIGHT AND THURSDAY MORNING...MAINLY BETWEEN MIDNIGHT AND
SUNRISE. A FEW OF THESE STORMS MAY REACH SEVERE LEVELS...
PRODUCING LARGE HAIL AND DAMAGING WINDS. DANGEROUS CLOUD TO
GROUND LIGHTNING WILL ALSO BE LIKELY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

CRITICAL FIRE WEATHER CONDITIONS ARE LIKELY THURSDAY ACROSS THE
CONCHO VALLEY AND NORTHERN EDWARDS PLATEAU DUE TO WINDS OF
GREATER THAN 20 MPH...AND RELATIVE HUMIDITY VALUES OF LESS THAN 20
PERCENT. A FIRE WEATHER WATCH WILL BE IN EFFECT DURING THE
AFTERNOON HOURS.

IN ADDITION...A WIND ADVISORY WILL BE IN EFFECT FROM MID MORNING
THROUGH 6 PM FOR AREAS ALONG AND WEST OF A HASKELL TO SONORA LINE
FOR GUSTY WINDS OF 25 TO 35 MPH...AND HIGHER GUSTS. THESE WINDS
WILL MAKE DRIVING DIFFICULT FOR HIGH PROFILE VEHICLES SUCH AS
VANS...CAMPER...AND TRACTOR TRAILERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 21, 4:18 AM CST	Special Weather Statement	SJT	Callahan	27 min
Feb 21, 4:43 AM CST	Special Weather Statement	SJT	Shackelford	17 min
Feb 21, 5:02 AM CST	Special Weather Statement	SJT	Shackelford	28 min

Nearby

Red Flag Warnings in Texas, 2013 Every red flag warning in 2013

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.