Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 284, NWS Fort Worth, TX

May 10, 2008Dallas County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 10, 2008, 5:52 PM CDT for Dallas County, Texas. It was in force for 29 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 10, 2008, 5:52 PM CDT (22:52 UTC)
Expired
May 10, 2008, 6:21 PM CDT
In force
29 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

County Dallas County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 54 km from the middle of the area, began a volume at 22:51 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
May 10, 4:16 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.9 hours before the alert went out and 279 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, Norman, OK at 12:00Z on 2008-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 146 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, Norman, OK at 12:00Z on 2008-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 544 square meters per square second.1939587897117136Sfc1 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
146 J/kg
Mixed-layer CIN
-598 J/kg
Mixed-layer LCL
1471 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
544 m²/s²
0-3 km storm-relative helicity
682 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

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 10, 2:51 PM CDT, 3 hours 1 minute earlier.

Area forecast discussion, May 10, 2:51 PM CDT, 3 hours 1 minute before
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Hazardous weather outlook, May 10, 10:15 AM CDT, 7 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK...RETRANSMITTED
NATIONAL WEATHER SERVICE FORT WORTH TX
1015 AM CDT SAT MAY 10 2008

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-111100-
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-
1015 AM CDT SAT MAY 10 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY TO THE EAST OF
A LINE FROM GAINESVILLE...TO ARLINGTON...TO HILLSBORO...TO LAMPASAS.

ISOLATED TO SCATTERED SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP
ALONG AND TO THE EAST A DRY LINE THIS AFTERNOON.  THE ATMOSPHERE IS
VERY UNSTABLE OVER NORTH TEXAS AND THUNDERSTORMS THAT DO DEVELOP
WILL BECOME SEVERE. VERY LARGE HAIL...DAMAGING WINDS...AND ISOLATED
TORNADOES WILL BE POSSIBLE ACROSS THE SLIGHT RISK AREA. THE
THUNDERSTORMS WILL MOVE EAST AND SHOULD BE OUT OF NORTH TEXAS BY
MIDNIGHT.

.DAYS TWO THROUGH SEVEN...
THERE WILL BE A CHANCE OF THUNDERSTORMS TUESDAY THROUGH WEDNESDAY
NIGHT ACROSS ALL OF NORTH TEXAS. SOME OF THE STORMS MAY BE SEVERE
WITH LARGE HAIL AND DAMAGING WINDS.

THUNDERSTORMS CHANCES WILL RETURN TO THE NORTHERN TWO-THIRDS OF
NORTH TEXAS THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING ALONG
AND EAST OF A LINE FROM GAINESVILLE...TO ARLINGTON...TO
HILLSBORO...TO LAMPASAS.

92/13

In the hours before

Special weather statement, May 10, 5:13 PM CDT, 39 minutes before
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Special weather statement, May 10, 5:45 PM CDT, 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
545 PM CDT SAT MAY 10 2008

TXZ119-102315-
DALLAS TX-
545 PM CDT SAT MAY 10 2008

...SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHERN DALLAS COUNTY

AT 545 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 2 MILES SOUTHWEST OF HIGHLAND PARK...MOVING EAST
AT 25 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE ADDISON...BALCH SPRINGS...
COCKRELL HILL...DALLAS...FARMERS BRANCH...GARLAND...HIGHLAND PARK...
MESQUITE...RICHARDSON...ROWLETT...SACHSE...SUNNYVALE AND UNIVERSITY
PARK.

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

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING.

LAT...LON 3272 9697 3296 9693 3299 9655 3299 9652
      3269 9652
TIME...MOT...LOC 2245Z 270DEG 22KT 3281 9680

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:37 PM CDTSevere Thunderstorm WarningFWDLampasas53 min
May 9, 8:12 PM CDTSpecial Weather StatementFWDCoryell33 min
May 9, 8:21 PM CDTSevere Thunderstorm WarningFWDCoryell, Lampasas54 min
May 9, 9:03 PM CDTSevere Thunderstorm WarningFWDBosque, Coryell, McLennan57 min
May 9, 9:23 PM CDTSpecial Weather StatementFWDWilliamson37 min
May 9, 9:54 PM CDTSevere Thunderstorm WarningFWDMcLennan34 min
May 9, 10:21 PM CDTSpecial Weather StatementFWDLimestone24 min
May 10, 5:13 PM CDTSpecial Weather StatementFWDDallas32 min
May 10, 5:45 PM CDTSpecial Weather StatementFWDDallas30 min
May 10, 6:04 PM CDTSpecial Weather StatementFWDRockwall26 min
May 10, 6:17 PM CDTSpecial Weather StatementFWDKaufman28 min
May 10, 6:33 PM CDTSpecial Weather StatementFWDGrayson27 min
May 10, 6:42 PM CDTSpecial Weather StatementFWDKaufman33 min
May 10, 6:57 PM CDTSpecial Weather StatementFWDFannin33 min

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.