Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 40, NWS Fort Worth, TX

May 24, 2009Bell County, Texas

NWS Fort Worth, TX issued this flash flood warning at May 24, 2009, 8:30 AM CDT for Bell County, Texas. It was in force for 2 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: May 24, 2009, 8:30 AM CDT (13:30 UTC)
Expired: May 24, 2009, 10:30 AM CDT
In force: 2 hr
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

County Bell County, TX

The radar

The Ft Hood radar (KGRK), 36 km from the middle of the area, began a volume at 13:30 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 12:00Z, 1.5 hours before the alert went out and 200 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: 692 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 556 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at May 24, 6:30 AM CDT, 2 hours earlier.

Area forecast discussion, May 24, 6:30 AM CDT, 2 hours before

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Hazardous weather outlook, May 24, 2:58 AM CDT, 5 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
258 AM CDT SUN MAY 24 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-251200-
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-
258 AM CDT SUN MAY 24 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE EXPECTED AGAIN TODAY WITH THE HIGHEST AREAL
COVERAGE OCCURRING IN THE AFTERNOON AND EARLY EVENING HOURS. HEAVY
RAINFALL AND LIGHTNING WILL BE THE MAIN THREATS WITH THESE STORMS
BUT LOCALIZED NUISANCE FLOODING MAY OCCUR WITH THE STRONGEST
STORMS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

A CHANCE FOR THUNDERSTORMS WILL CONTINUE ACROSS MUCH OF NORTH
TEXAS DURING THE UPCOMING WEEK. MOST OF THE ACTIVITY WILL OCCUR
DURING THE AFTERNOON HOURS. AN ISOLATED SEVERE STORM WILL BE
POSSIBLE.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

82/JLD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:38 PM CDT	Special Weather Statement	FWD	Palo Pinto	37 min
May 23, 8:02 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Somervell	28 min
May 23, 8:56 PM CDT	Special Weather Statement	FWD	Erath	34 min
May 23, 9:33 PM CDT	Special Weather Statement	FWD	Young	27 min
May 23, 9:40 PM CDT	Special Weather Statement	FWD	Falls	35 min
May 24, 10:09 AM CDT	Areal Flood Advisory	FWD	Coryell, Lampasas	111 min
May 24, 10:29 AM CDT	Areal Flood Advisory	FWD	Bell	2 hr
May 24, 10:49 AM CDT	Areal Flood Advisory	FWD	Milam	116 min
May 24, 11:38 AM CDT	Flash Flood Warning	FWD	Milam	112 min
May 24, 1:35 PM CDT	Areal Flood Advisory	FWD	Comanche, Hamilton, Mills	115 min
May 24, 5:12 PM CDT	Areal Flood Advisory	FWD	Falls, McLennan	3 hr

Nearby

Flash Flood Warnings in Texas, 2009 Every flash flood warning in 2009

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.