Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 204, NWS Fort Worth, TX

April 17, 2008Bell County, Milam County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 17, 2008, 11:42 PM CDT for Bell County, Milam County, Texas. It was in force for 48 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: Apr 17, 2008, 11:42 PM CDT (04:42 UTC)
Expired: Apr 18, 2008, 12:30 AM CDT
In force: 48 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Bell County, TX, Milam County, TX

The radar

The Ft Hood radar (KGRK), 26 km from the middle of the area, began a volume at 04:44 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
Apr 17, 8:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.7 hours before the alert went out and 213 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: 822 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1439 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.8

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 Apr 17, 10:52 PM CDT, 50 minutes earlier.

Area forecast discussion, Apr 17, 10:52 PM CDT, 50 minutes before

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Hazardous weather outlook, Apr 17, 6:00 PM CDT, 5 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
600 PM CDT THU APR 17 2008

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-181100-
ANDERSON-BELL-BOSQUE-COLLIN-COMANCHE-COOKE-CORYELL-DALLAS-DELTA-
DENTON-EASTLAND-ELLIS-ERATH-FALLS-FANNIN-FREESTONE-GRAYSON-HAMILTON-
HENDERSON-HILL-HOOD-HOPKINS-HUNT-JACK-JOHNSON-KAUFMAN-LAMAR-LAMPASAS-
LEON-LIMESTONE-MCLENNAN-MILAM-MILLS-MONTAGUE-NAVARRO-PALO PINTO-
PARKER-RAINS-ROBERTSON-ROCKWALL-SOMERVELL-STEPHENS-TARRANT-VAN ZANDT-
WISE-YOUNG-
600 PM CDT THU APR 17 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TONIGHT...
THUNDERSTORMS WILL AFFECT MUCH OF NORTH TEXAS THIS EVENING AND
OVERNIGHT...IN ADVANCE OF A COLD FRONT. SOME OF THESE STORMS COULD
BECOME SEVERE...WITH LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
THUNDERSTORMS WILL CONTINUE INTO FRIDAY MORNING...ENDING BY MIDDAY.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH TEXAS MONDAY
AFTERNOON THROUGH THURSDAY. A FEW OF THE STORMS MAY BECOME SEVERE...
WITH A THREAT OF LARGE HAIL AND DAMAGING WINDS.

.SPOTTER ACTIVATION STATEMENT...
SPOTTER ACTIVATION IS LIKELY THIS EVENING ALONG AND NORTHWEST OF A
LINE FROM GOLDTHWAITE...TO DALLAS/FORT WORTH...TO SHERMAN/DENISON.
SPOTTER ACTIVATION IS ANTICIPATED ACROSS THE REMAINDER OF NORTH
TEXAS FROM LATE EVENING THROUGH THE OVERNIGHT HOURS.

26/25

In the hours before

Local storm report, Apr 17, 10:51 PM CDT, 51 minutes before

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Local storm report, Apr 17, 10:52 PM CDT, 50 minutes before

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Local storm report, Apr 17, 11:03 PM CDT, 39 minutes before

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Special weather statement, Apr 17, 11:03 PM CDT, 39 minutes before

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Local storm report, Apr 17, 11:18 PM CDT, 24 minutes before

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Special weather statement, Apr 17, 11:22 PM CDT, 20 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
Apr 17, 7:01 PM CDT	Special Weather Statement	FWD	Hood	29 min
Apr 17, 7:20 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	55 min
Apr 17, 7:38 PM CDT	Severe Thunderstorm Warning	FWD	Hood	37 min
Apr 17, 7:42 PM CDT	Severe Thunderstorm Warning	FWD	Parker	48 min
Apr 17, 7:45 PM CDT	Special Weather Statement	FWD	Johnson	30 min
Apr 17, 7:45 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Denton	45 min
Apr 17, 8:09 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	66 min
Apr 17, 8:11 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Somervell	64 min
Apr 17, 8:12 PM CDT	Flash Flood Warning	FWD	Tarrant	2 hr
Apr 17, 8:16 PM CDT	Severe Thunderstorm Warning	FWD	Johnson	44 min
Apr 17, 8:20 PM CDT	Special Weather Statement	FWD	Dallas	25 min
Apr 17, 8:30 PM CDT	Special Weather Statement	FWD	Hamilton, Mills	30 min
Apr 17, 8:30 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	60 min
Apr 17, 8:34 PM CDT	Severe Thunderstorm Warning	FWD	Hamilton, Mills	56 min
Apr 17, 8:41 PM CDT	Special Weather Statement	FWD	Ellis	34 min
Apr 17, 8:47 PM CDT	Severe Thunderstorm Warning	FWD	Johnson	43 min
Apr 17, 8:52 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	53 min
Apr 17, 9:04 PM CDT	Flash Flood Warning	FWD	Dallas	116 min
Apr 17, 9:14 PM CDT	Severe Thunderstorm Warning	FWD	Lampasas	61 min
Apr 17, 9:19 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Rockwall	56 min
Apr 17, 9:26 PM CDT	Severe Thunderstorm Warning	FWD	Coryell	64 min
Apr 17, 9:42 PM CDT	Flash Flood Warning	FWD	Ellis	2 hr
Apr 17, 9:44 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	61 min
Apr 17, 9:59 PM CDT	Severe Thunderstorm Warning	FWD	Kaufman	61 min
Apr 17, 10:03 PM CDT	Special Weather Statement	FWD	Fannin, Hunt	27 min
Apr 17, 10:11 PM CDT	Special Weather Statement	FWD	McLennan	34 min
Apr 17, 10:18 PM CDT	Special Weather Statement	FWD	Hill	27 min
Apr 17, 10:32 PM CDT	Flash Flood Warning	FWD	Kaufman	118 min
Apr 17, 10:32 PM CDT	Special Weather Statement	FWD	Navarro	58 min
Apr 17, 10:46 PM CDT	Special Weather Statement	FWD	McLennan	29 min
Apr 17, 10:50 PM CDT	Special Weather Statement	FWD	Henderson	85 min
Apr 17, 11:03 PM CDT	Special Weather Statement	FWD	Bell	27 min
Apr 17, 11:22 PM CDT	Special Weather Statement	FWD	Bell	53 min
Apr 18, 12:13 AM CDT	Special Weather Statement	FWD	Henderson, Van Zandt	37 min
Apr 18, 12:42 AM CDT	Special Weather Statement	FWD	Anderson	33 min
Apr 18, 12:44 AM CDT	Special Weather Statement	FWD	Robertson	31 min
Apr 18, 1:05 AM CDT	Special Weather Statement	FWD	Anderson	25 min
Apr 18, 6:37 AM CDT	River Flood Warning	FWD	Collin	4 hr
Apr 18, 8:10 AM CDT	River Flood Warning	FWD	Hunt, Rockwall	6 hr
Apr 18, 9:31 AM CDT	River Flood Warning	FWD	Henderson, Navarro	12 hr
Apr 18, 2:45 PM CDT	River Flood Warning	FWD	Dallas	18 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm 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.