Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 196, NWS Fort Worth, TX

April 17, 2008Hamilton County, Mills County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 17, 2008, 8:34 PM CDT for Hamilton County, Mills County, Texas. It was in force for 56 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, 8:34 PM CDT (01:34 UTC)
Expired
Apr 17, 2008, 9:30 PM CDT
In force
56 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

Counties Hamilton County, TX, Mills County, TX

The radar

The Ft Hood radar (KGRK), 134 km from the middle of the area, began a volume at 01:36 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.

IssuedProductOfficeLasted
Apr 17, 6:38 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.6 hours before the alert went out and 169 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2008-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 822 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2008-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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, 8:30 PM CDT, 4 minutes earlier.

Area forecast discussion, Apr 17, 8:30 PM CDT, 4 minutes before
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Hazardous weather outlook, Apr 17, 6:00 PM CDT, 2 hours 34 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

Special weather statement, Apr 17, 8:20 PM CDT, 14 minutes before
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Local storm report, Apr 17, 8:25 PM CDT, 9 minutes before
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Local storm report, Apr 17, 8:26 PM CDT, 8 minutes before
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Local storm report, Apr 17, 8:27 PM CDT, 7 minutes before
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Local storm report, Apr 17, 8:29 PM CDT, 5 minutes before
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Special weather statement, Apr 17, 8:30 PM CDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
830 PM CDT THU APR 17 2008

TXZ141>143-180200-
COMANCHE TX-HAMILTON TX-MILLS TX-
830 PM CDT THU APR 17 2008

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHERN COMANCHE COUNTY
  HAMILTON COUNTY
  MILLS COUNTY

AT 830 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 14 MILES EAST OF
COMANCHE TO 16 MILES NORTH OF SAN SABA...MOVING EAST AT 40 MPH.

CITIES IN THE PATH OF THESE STORMS INCLUDE EVANT...GOLDTHWAITE...
GUSTINE...HAMILTON AND MULLIN.

FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL...PEA-SIZED
HAIL...AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THESE STORMS.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

LAT...LON 3131 9862 3132 9867 3135 9867 3134 9870
      3135 9873 3141 9873 3137 9877 3143 9887
      3194 9838 3168 9776 3126 9856
TIME...MOT...LOC 0130Z 271DEG 35KT 3185 9835 3142 9865

92

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 7:01 PM CDTSpecial Weather StatementFWDHood29 min
Apr 17, 7:20 PM CDTSevere Thunderstorm WarningFWDTarrant55 min
Apr 17, 7:38 PM CDTSevere Thunderstorm WarningFWDHood37 min
Apr 17, 7:42 PM CDTSevere Thunderstorm WarningFWDParker48 min
Apr 17, 7:45 PM CDTSpecial Weather StatementFWDJohnson30 min
Apr 17, 7:45 PM CDTSevere Thunderstorm WarningFWDCooke, Denton45 min
Apr 17, 8:09 PM CDTSevere Thunderstorm WarningFWDTarrant66 min
Apr 17, 8:11 PM CDTSevere Thunderstorm WarningFWDErath, Hood, Somervell64 min
Apr 17, 8:12 PM CDTFlash Flood WarningFWDTarrant2 hr
Apr 17, 8:16 PM CDTSevere Thunderstorm WarningFWDJohnson44 min
Apr 17, 8:20 PM CDTSpecial Weather StatementFWDDallas25 min
Apr 17, 8:30 PM CDTSpecial Weather StatementFWDHamilton, Mills30 min
Apr 17, 8:30 PM CDTSevere Thunderstorm WarningFWDDallas60 min
Apr 17, 8:41 PM CDTSpecial Weather StatementFWDEllis34 min
Apr 17, 8:47 PM CDTSevere Thunderstorm WarningFWDJohnson43 min
Apr 17, 8:52 PM CDTSevere Thunderstorm WarningFWDEllis53 min
Apr 17, 9:04 PM CDTFlash Flood WarningFWDDallas116 min
Apr 17, 9:14 PM CDTSevere Thunderstorm WarningFWDLampasas61 min
Apr 17, 9:19 PM CDTSevere Thunderstorm WarningFWDCollin, Dallas, Rockwall56 min
Apr 17, 9:26 PM CDTSevere Thunderstorm WarningFWDCoryell64 min
Apr 17, 9:42 PM CDTFlash Flood WarningFWDEllis2 hr
Apr 17, 9:44 PM CDTSevere Thunderstorm WarningFWDEllis61 min
Apr 17, 9:59 PM CDTSevere Thunderstorm WarningFWDKaufman61 min
Apr 17, 10:03 PM CDTSpecial Weather StatementFWDFannin, Hunt27 min
Apr 17, 10:11 PM CDTSpecial Weather StatementFWDMcLennan34 min
Apr 17, 10:18 PM CDTSpecial Weather StatementFWDHill27 min
Apr 17, 10:32 PM CDTFlash Flood WarningFWDKaufman118 min
Apr 17, 10:32 PM CDTSpecial Weather StatementFWDNavarro58 min
Apr 17, 10:46 PM CDTSpecial Weather StatementFWDMcLennan29 min
Apr 17, 10:50 PM CDTSpecial Weather StatementFWDHenderson85 min
Apr 17, 11:03 PM CDTSpecial Weather StatementFWDBell27 min
Apr 17, 11:22 PM CDTSpecial Weather StatementFWDBell53 min
Apr 17, 11:42 PM CDTSevere Thunderstorm WarningFWDBell, Milam48 min
Apr 18, 12:13 AM CDTSpecial Weather StatementFWDHenderson, Van Zandt37 min
Apr 18, 12:42 AM CDTSpecial Weather StatementFWDAnderson33 min
Apr 18, 12:44 AM CDTSpecial Weather StatementFWDRobertson31 min
Apr 18, 1:05 AM CDTSpecial Weather StatementFWDAnderson25 min
Apr 18, 6:37 AM CDTRiver Flood WarningFWDCollin4 hr
Apr 18, 8:10 AM CDTRiver Flood WarningFWDHunt, Rockwall6 hr
Apr 18, 9:31 AM CDTRiver Flood WarningFWDHenderson, Navarro12 hr
Apr 18, 2:45 PM CDTRiver Flood WarningFWDDallas18 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2008Every 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.