Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 86, NWS Fort Worth, TX

April 16, 2009Leon County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 16, 2009, 7:03 PM CDT for Leon County, Texas. It was in force for 57 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 16, 2009, 7:03 PM CDT (00:03 UTC)
Expired
Apr 16, 2009, 8:00 PM CDT
In force
57 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

County Leon County, TX

The radar

The Ft Hood radar (KGRK), 147 km from the middle of the area, began a volume at 00:05 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

Shreveport, LA (KSHV), launched 00:00Z, 0.1 hours before the alert went out and 250 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, Shreveport, LA at 00:00Z on 2009-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Shreveport, LA at 00:00Z on 2009-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2029 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
34 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 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 16, 7:00 PM CDT, 3 minutes earlier.

Area forecast discussion, Apr 16, 7:00 PM CDT, 3 minutes before
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Hazardous weather outlook, Apr 16, 6:05 PM CDT, 58 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
605 PM CDT THU APR 16 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-171100-
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-
605 PM CDT THU APR 16 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING ACROSS MOST OF NORTH
TEXAS WITH CHANCES INCREASING LATER TONIGHT FROM WEST TO EAST.
STRONG THUNDERSTORMS ARE EXPECTED WITH HAIL AND FREQUENT LIGHTNING
BEING THE MAIN THREATS. IN ADDITION...LOCALLY HEAVY RAINFALL WILL
BE POSSIBLE WITH THESE STORMS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A COMPLEX OF THUNDERSTORMS IS EXPECTED TO MOVE ACROSS NORTH TEXAS
DURING THE DAY FRIDAY. FREQUENT LIGHTNING...SMALL HAIL AND LOCALLY
HEAVY RAINFALL CAN BE EXPECTED. FARTHER SOUTH...SOME STORMS MAY
BECOME SEVERE...MAINLY SOUTH OF INTERSTATE 20. LARGE HAIL AND
STRONG WINDS WILL BE POSSIBLE WITH THESE STORMS.

SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS THE SOUTHERN HALF OF
NORTH TEXAS FRIDAY NIGHT AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED TONIGHT.

DUNN

In the hours before

Special weather statement, Apr 16, 1:22 PM CDT, 5 hours 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
122 PM CDT THU APR 16 2009

TXZ100-161845-
YOUNG TX-
122 PM CDT THU APR 16 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  YOUNG COUNTY

AT 121 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 17 MILES NORTH OF BRECKENRIDGE...MOVING NORTHEAST
AT 30 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE NEWCASTLE AND OLNEY.

PEA-SIZED HAIL AND WIND GUSTS TO 40 MPH CAN BE EXPECTED FROM THIS
STORM.

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

LAT...LON 3340 9877 3340 9842 3339 9842 3295 9877
      3296 9896 3305 9896
TIME...MOT...LOC 1821Z 208DEG 28KT 3300 9886
Special weather statement, Apr 16, 3:01 PM CDT, 4 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
301 PM CDT THU APR 16 2009

TXZ100-162030-
YOUNG TX-
301 PM CDT THU APR 16 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHWESTERN YOUNG COUNTY

AT 302 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 10 MILES WEST OF OLNEY...MOVING NORTHEAST AT 30
MPH.

PEA-SIZED HAIL CAN BE EXPECTED FROM THIS STORM.

LAT...LON 3340 9895 3340 9882 3339 9882 3324 9887
      3327 9896
TIME...MOT...LOC 2002Z 207DEG 25KT 3332 9891

SCHULTZ
Special weather statement, Apr 16, 6:23 PM CDT, 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
623 PM CDT THU APR 16 2009

TXZ159-170000-
MCLENNAN TX-
623 PM CDT THU APR 16 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  MCLENNAN COUNTY

AT 623 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 3 MILES EAST OF MCGREGOR...MOVING NORTHEAST AT 25
MPH. ANOTHER STRONG THUNDERSTORM WAS LOCATED NEAR CRAWFORD...ALSO
MOVING NORTHEAST AT 25 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE BELLMEAD...BEVERLY HILLS...
CRAWFORD...LACY-LAKEVIEW...MCGREGOR...NORTHCREST...WACO AND WOODWAY.

PEA-SIZED HAIL AND WIND GUSTS TO 30 MPH CAN BE EXPECTED FROM THIS
STORM.

LAT...LON 3146 9748 3170 9739 3179 9721 3175 9696
      3133 9731
TIME...MOT...LOC 2323Z 205DEG 23KT 3146 9733

SCHULTZ
Special weather statement, Apr 16, 6:51 PM CDT, 12 minutes before
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Local storm report, Apr 16, 6:59 PM CDT, 4 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 7:45 PM CDTSpecial Weather StatementFWDNavarro30 min
Apr 16, 8:16 PM CDTSpecial Weather StatementFWDNavarro29 min
Apr 16, 8:25 PM CDTSpecial Weather StatementFWDEllis35 min
Apr 16, 8:42 PM CDTSpecial Weather StatementFWDCherokee33 min
Apr 16, 9:02 PM CDTSpecial Weather StatementFWDHenderson28 min
Apr 16, 9:12 PM CDTSpecial Weather StatementFWDMontague33 min
Apr 16, 9:25 PM CDTSevere Thunderstorm WarningFWDCooke, Montague53 min
Apr 16, 9:35 PM CDTSpecial Weather StatementFWDDenton25 min
Apr 16, 9:43 PM CDTSpecial Weather StatementFWDKaufman32 min
Apr 16, 9:55 PM CDTSpecial Weather StatementFWDTarrant35 min
Apr 16, 10:13 PM CDTSpecial Weather StatementFWDVan Zandt32 min
Apr 16, 10:17 PM CDTSpecial Weather StatementFWDRockwall28 min
Apr 16, 11:12 PM CDTSpecial Weather StatementFWDRains33 min
Apr 17, 6:46 AM CDTSpecial Weather StatementFWDHamilton29 min
Apr 17, 7:16 AM CDTSpecial Weather StatementFWDHamilton29 min
Apr 17, 7:33 AM CDTSevere Thunderstorm WarningFWDLampasas42 min
Apr 17, 7:45 AM CDTSpecial Weather StatementFWDBosque30 min
Apr 17, 7:59 AM CDTSpecial Weather StatementFWDEastland, Stephens, Young61 min
Apr 17, 8:14 AM CDTSevere Thunderstorm WarningFWDBell, Coryell, Lampasas76 min
Apr 17, 8:18 AM CDTSpecial Weather StatementFWDJohnson27 min
Apr 17, 8:40 AM CDTSevere Thunderstorm WarningFWDHill47 min
Apr 17, 9:04 AM CDTSevere Thunderstorm WarningFWDEllis, Johnson56 min
Apr 17, 9:13 AM CDTSevere Thunderstorm WarningFWDCoryell62 min
Apr 17, 9:31 AM CDTSevere Thunderstorm WarningFWDBell, McLennan59 min
Apr 17, 9:34 AM CDTAreal Flood AdvisoryFWDBell, Coryell3 hr
Apr 17, 10:10 AM CDTSpecial Weather StatementFWDFalls, Milam35 min
Apr 17, 10:24 AM CDTSevere Thunderstorm WarningFWDMcLennan51 min
Apr 17, 10:33 AM CDTSpecial Weather StatementFWDDallas, Ellis27 min
Apr 17, 10:39 AM CDTSpecial Weather StatementFWDHill36 min
Apr 17, 10:47 AM CDTSpecial Weather StatementFWDPalo Pinto, Parker, Tarrant, Wise28 min
Apr 17, 10:49 AM CDTSpecial Weather StatementFWDErath, Hamilton, Hood, Lampasas, Mills, Somervell26 min
Apr 17, 10:59 AM CDTSpecial Weather StatementFWDLimestone31 min
Apr 17, 11:00 AM CDTSpecial Weather StatementFWDLeon30 min
Apr 17, 11:17 AM CDTSpecial Weather StatementFWDFreestone, Navarro28 min
Apr 17, 11:21 AM CDTSpecial Weather StatementFWDRobertson24 min
Apr 17, 11:23 AM CDTAreal Flood AdvisoryFWDFalls, Limestone, Milam, Robertson3 hr
Apr 17, 11:28 AM CDTAreal Flood AdvisoryFWDDallas, Ellis, Henderson, Kaufman, Navarro, Rockwall3 hr
Apr 17, 11:43 AM CDTSpecial Weather StatementFWDFreestone, Henderson, Kaufman32 min
Apr 17, 11:53 AM CDTAreal Flood AdvisoryFWDFreestone, Leon3 hr
Apr 17, 12:01 PM CDTSpecial Weather StatementFWDCollin, Dallas, Ellis, Grayson, Rockwall119 min
Apr 17, 12:11 PM CDTSpecial Weather StatementFWDCooke, Denton, Montague, Tarrant, Wise34 min
Apr 17, 12:13 PM CDTSpecial Weather StatementFWDBell, Bosque, Coryell, Ellis, Falls, Hill and 4 more32 min
Apr 17, 12:19 PM CDTSpecial Weather StatementFWDAnderson26 min
Apr 17, 12:29 PM CDTAreal Flood AdvisoryFWDAnderson, Henderson, Van Zandt3 hr
Apr 17, 12:42 PM CDTSpecial Weather StatementFWDDelta, Lamar63 min
Apr 17, 12:43 PM CDTAreal Flood AdvisoryFWDDelta, Fannin, Hopkins, Hunt, Lamar, Rains3 hr
Apr 17, 1:08 PM CDTSpecial Weather StatementFWDKaufman, Limestone, Navarro67 min
Apr 17, 2:04 PM CDTSpecial Weather StatementFWDFannin, Hunt71 min
Apr 17, 2:11 PM CDTSpecial Weather StatementFWDAnderson, Henderson, Rains, Van Zandt79 min
Apr 17, 2:49 PM CDTSpecial Weather StatementFWDCoryell26 min
Apr 17, 3:04 PM CDTSpecial Weather StatementFWDDelta, Hopkins, Lamar86 min
Apr 17, 3:19 PM CDTSpecial Weather StatementFWDCoryell26 min
Apr 17, 3:32 PM CDTSpecial Weather StatementFWDAnderson, Henderson, Leon, Van Zandt58 min
Apr 17, 5:30 PM CDTSpecial Weather StatementFWDMilam30 min
Apr 17, 5:40 PM CDTSpecial Weather StatementFWDMcLennan35 min
Apr 17, 5:44 PM CDTSpecial Weather StatementFWDBell31 min
Apr 17, 6:20 PM CDTSpecial Weather StatementFWDMilam25 min
Apr 17, 6:50 PM CDTSpecial Weather StatementFWDRobertson25 min

Nearby

Severe Thunderstorm Warnings in Texas, 2009Every 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.