Alert archive / Texas / Red Flag Warnings in 2008

Red Flag Warning 20, NWS Fort Worth, TX

December 27, 200830 counties in Texas

NWS Fort Worth, TX issued this red flag warning at Dec 27, 2008, 3:59 AM CST for 30 counties in Texas. It took effect at Dec 27, 2008, 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: Dec 27, 2008, 3:59 AM CST (09:59 UTC)
In effect from: Dec 27, 2008, 9:00 AM CST
Expired: Dec 27, 2008, 6:00 PM CST
In force: 9 hr
Issued by: NWS Fort Worth, TX

All 30 counties

Bell County, TX, Bosque County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Lampasas County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Wise County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 42 km from the middle of the area, began a volume at 10:01 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

Fort Worth, TX (KFWD), launched 00:00Z, 10.0 hours before the alert went out and 63 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: 937 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1152 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 312 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.0

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 Fort Worth, TX wrote its last area forecast discussion before this red flag warning went out at Dec 26, 11:11 PM CST, 4 hours 48 minutes earlier.

Area forecast discussion, Dec 26, 11:11 PM CST, 4 hours 48 minutes before

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Hazardous weather outlook, Dec 26, 3:31 PM CST, 12 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
331 PM CST FRI DEC 26 2008

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-271215-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
331 PM CST FRI DEC 26 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH TEXAS
TONIGHT. THUNDERSTORMS WILL BECOME LIKELY AFTER MIDNIGHT MAINLY
NORTH OF AN EASTLAND TO HILLSBORO TO ATHENS LINE AS A STRONG STORM
SYSTEM MOVES THROUGH THE SOUTHERN PLAINS. SOME STORMS WILL BECOME
SEVERE WITH DAMAGING WINDS...LARGE HAIL...AND ISOLATED TORNADOES. THERE
WILL ALSO BE AN ENHANCED TORNADO THREAT PARTICULARLY ALONG THE RED
RIVER FROM GAINESVILLE TO PARIS DURING THE LATE OVERNIGHT HOURS
INTO EARLY SATURDAY MORNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THUNDERSTORMS WILL BE ONGOING EARLY SATURDAY MORNING ACROSS PARTS
OF NORTH TEXAS...GENERALLY ALONG AND EAST OF INTERSTATE 35. SOME
STORMS WILL LIKELY CONTINUE TO BE SEVERE WITH DAMAGING
WINDS...LARGE HAIL...AND ISOLATED TORNADOES. THE THUNDERSTORMS
WILL END FROM WEST TO EAST DURING THE DAY SATURDAY.

BEHIND THE COLD FRONT...STRONG WEST WINDS AND MUCH DRIER AIR WILL
CREATE DANGEROUS FIRE WEATHER CONDITIONS PRIMARILY ALONG AND WEST
OF INTERSTATE 35.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUESTED OVERNIGHT AND ON
SATURDAY ACROSS MUCH OF NORTH TEXAS.

DUNN

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 27, 4:18 AM CST	Wind Advisory	FWD	Bell, Bosque, Collin, Comanche, Cooke, Coryell and 22 more	14 hr
Dec 27, 5:07 AM CST	Special Weather Statement	FWD	Young	23 min
Dec 27, 6:56 AM CST	Special Weather Statement	FWD	Wise	34 min
Dec 27, 7:13 AM CST	Special Weather Statement	FWD	Cooke	32 min
Dec 27, 7:22 AM CST	Special Weather Statement	FWD	Cooke, Wise	23 min
Dec 27, 7:53 AM CST	Special Weather Statement	FWD	Grayson	37 min
Dec 27, 8:10 AM CST	Special Weather Statement	FWD	Tarrant	35 min
Dec 27, 8:21 AM CST	Severe Thunderstorm Warning	FWD	Cooke, Grayson	39 min
Dec 27, 8:39 AM CST	Special Weather Statement	FWD	Denton	36 min
Dec 27, 9:05 AM CST	Special Weather Statement	FWD	Collin, Fannin	25 min
Dec 27, 9:15 AM CST	Special Weather Statement	FWD	Rockwall	30 min
Dec 27, 9:31 AM CST	Special Weather Statement	FWD	Fannin	29 min
Dec 27, 9:45 AM CST	Special Weather Statement	FWD	Ellis, Hill	30 min
Dec 27, 10:11 AM CST	Special Weather Statement	FWD	Delta, Hopkins, Hunt, Lamar	34 min
Dec 27, 10:12 AM CST	Special Weather Statement	FWD	Falls, Kaufman, Limestone, Navarro, Rains, Van Zandt	33 min
Dec 27, 10:44 AM CST	Special Weather Statement	FWD	Delta, Hopkins, Lamar, Rains	31 min
Dec 27, 10:46 AM CST	Special Weather Statement	FWD	Freestone, Henderson, Limestone, Rains, Van Zandt	29 min
Dec 27, 11:15 AM CST	Special Weather Statement	FWD	Freestone, Henderson, Limestone, Navarro	30 min

Nearby

Red Flag Warnings in Texas, 2008 Every red flag warning in 2008

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.