Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 161, NWS Fort Worth, TX

May 3, 2009Henderson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 3, 2009, 6:00 AM CDT for Henderson County, Texas. It was in force for 41 min. 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 3, 2009, 6:00 AM CDT (11:00 UTC)
Expired: May 3, 2009, 6:41 AM CDT
In force: 41 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Henderson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 142 km from the middle of the area, began a volume at 11:02 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 3, 5:12 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 11.0 hours before the alert went out and 151 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: 402 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 3, 5:20 AM CDT, 40 minutes earlier.

Area forecast discussion, May 3, 5:20 AM CDT, 40 minutes before

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Hazardous weather outlook, May 3, 3:22 AM CDT, 2 hours 38 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
322 AM CDT SUN MAY 3 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-041100-
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-
322 AM CDT SUN MAY 3 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.
STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE TODAY. LARGE
HAIL...DAMAGING WINDS...AND HEAVY RAINFALL ARE THE MAIN HAZARDS.

A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS ALONG AND NORTH OF
INTERSTATE 20 AND ALONG AND EAST OF INTERSTATE 35 THROUGH NOON.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
THUNDERSTORMS ARE POSSIBLE TUESDAY AND WEDNESDAY...AND AGAIN ON
FRIDAY AND SATURDAY. SEVERE WEATHER IS POSSIBLE WITH EACH EVENT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS LIKELY TODAY ALONG AND EAST OF A GAINESVILLE
TO COMANCHE LINE.

SCHULTZ

In the hours before

Local storm report, May 3, 4:08 AM CDT, 1 hour 52 minutes before

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Special weather statement, May 3, 4:16 AM CDT, 1 hour 44 minutes before

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Special weather statement, May 3, 4:41 AM CDT, 1 hour 19 minutes before

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Special weather statement, May 3, 4:47 AM CDT, 1 hour 13 minutes before

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Local storm report, May 3, 5:09 AM CDT, 51 minutes before

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Local storm report, May 3, 5:11 AM CDT, 49 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 7:09 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt, Rains, Van Zandt	66 min
May 2, 7:13 PM CDT	Severe Thunderstorm Warning	FWD	Denton	62 min
May 2, 7:24 PM CDT	Flash Flood Warning	FWD	Denton	3 hr
May 2, 7:42 PM CDT	Flash Flood Warning	FWD	Hopkins, Rains, Van Zandt	3 hr
May 2, 8:27 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Parker, Tarrant, Wise	63 min
May 2, 8:48 PM CDT	Flash Flood Warning	FWD	Tarrant	107 min
May 2, 8:49 PM CDT	River Flood Warning	FWD	Hunt	37 hr
May 2, 8:49 PM CDT	River Flood Warning	FWD	Hunt, Rockwall	43 hr
May 2, 8:59 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill	46 min
May 2, 9:20 PM CDT	River Flood Warning	FWD	Collin	37 hr
May 2, 9:20 PM CDT	River Flood Warning	FWD	Dallas	39 hr
May 2, 9:24 PM CDT	Flash Flood Warning	FWD	Grayson	83 min
May 2, 9:29 PM CDT	Severe Thunderstorm Warning	FWD	Hunt, Kaufman, Rains, Van Zandt	46 min
May 2, 9:36 PM CDT	Special Weather Statement	FWD	Collin, Denton, Rockwall	24 min
May 2, 9:39 PM CDT	Flash Flood Warning	FWD	Dallas	2 hr
May 2, 9:41 PM CDT	Areal Flood Advisory	FWD	Ellis	94 min
May 2, 9:46 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis	48 min
May 2, 9:58 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Fannin, Grayson, Rockwall	32 min
May 2, 10:09 PM CDT	Severe Thunderstorm Warning	FWD	Kaufman, Rockwall	66 min
May 2, 10:14 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Hunt	61 min
May 2, 10:26 PM CDT	Areal Flood Warning	FWD	Denton	4 hr
May 2, 10:37 PM CDT	Flash Flood Warning	FWD	Hopkins, Rains, Van Zandt	3 hr
May 2, 10:44 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Lamar, Rains	76 min
May 2, 10:50 PM CDT	Areal Flood Advisory	FWD	Delta, Fannin, Lamar	3 hr
May 2, 10:56 PM CDT	Flash Flood Warning	FWD	Collin, Hunt, Kaufman, Rockwall	2 hr
May 2, 10:57 PM CDT	River Flood Warning	FWD	Denton	11 hr
May 2, 11:07 PM CDT	Special Weather Statement	FWD	Van Zandt	38 min
May 2, 11:27 PM CDT	River Flood Warning	FWD	Dallas	9 hr
May 2, 11:38 PM CDT	Areal Flood Warning	FWD	Dallas	3 hr
May 2, 11:43 PM CDT	River Flood Warning	FWD	Dallas	9 hr
May 2, 11:50 PM CDT	Special Weather Statement	FWD	Van Zandt	25 min
May 3, 12:53 AM CDT	Special Weather Statement	FWD	Hopkins	22 min
May 3, 1:05 AM CDT	Special Weather Statement	FWD	Hunt	25 min
May 3, 1:32 AM CDT	Areal Flood Warning	FWD	Hopkins, Rains, Van Zandt	3 hr
May 3, 1:50 AM CDT	River Flood Warning	FWD	Delta, Hopkins	21 hr
May 3, 2:13 AM CDT	Special Weather Statement	FWD	Comanche	32 min
May 3, 2:29 AM CDT	Areal Flood Warning	FWD	Dallas	4 hr
May 3, 2:36 AM CDT	River Flood Warning	FWD	Collin	19 hr
May 3, 2:38 AM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson, Parker, Tarrant	49 min
May 3, 2:40 AM CDT	Special Weather Statement	FWD	Kaufman	35 min
May 3, 2:44 AM CDT	Special Weather Statement	FWD	Bosque	31 min
May 3, 3:00 AM CDT	Severe Thunderstorm Warning	FWD	Mills	37 min
May 3, 3:05 AM CDT	Special Weather Statement	FWD	Collin	25 min
May 3, 3:07 AM CDT	Special Weather Statement	FWD	Bosque	23 min
May 3, 3:30 AM CDT	Special Weather Statement	FWD	Dallas	30 min
May 3, 3:42 AM CDT	Severe Thunderstorm Warning	FWD	Lampasas	32 min
May 3, 3:53 AM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill, Navarro	67 min
May 3, 3:56 AM CDT	Flash Flood Warning	FWD	Collin, Dallas, Rockwall	2 hr
May 3, 4:16 AM CDT	Special Weather Statement	FWD	Bell, McLennan	29 min
May 3, 4:20 AM CDT	Flash Flood Warning	FWD	Hunt, Kaufman	3 hr
May 3, 4:41 AM CDT	Special Weather Statement	FWD	Kaufman, Rains, Van Zandt	34 min
May 3, 4:47 AM CDT	Special Weather Statement	FWD	Falls, Freestone, Limestone, Milam, Robertson	28 min
May 3, 5:03 AM CDT	Flash Flood Warning	FWD	Rains, Van Zandt	3 hr
May 3, 5:09 AM CDT	Severe Thunderstorm Warning	FWD	Henderson, Van Zandt	51 min
May 3, 5:13 AM CDT	Severe Thunderstorm Warning	FWD	Anderson, Falls, Freestone, Leon, Limestone, Milam and 2 more	92 min
May 3, 7:19 AM CDT	Areal Flood Warning	FWD	Hunt	4 hr
May 3, 7:59 AM CDT	Areal Flood Warning	FWD	Rains, Van Zandt	4 hr
May 3, 9:52 AM CDT	River Flood Warning	FWD	Henderson, Navarro	5 days

Nearby

Severe Thunderstorm Warnings in Texas, 2009 Every severe thunderstorm 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.