Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 246, NWS Norman, OK

April 9, 2008Archer County, Clay County, Wichita County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 9, 2008, 11:23 AM CDT for Archer County, Clay County, Wichita County, Texas. It was in force for 52 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 9, 2008, 11:23 AM CDT (16:23 UTC)
Expired
Apr 9, 2008, 12:15 PM CDT
In force
52 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Archer County, TX, Clay County, TX, Wichita County, TX

The radar

The Altus AFB radar (KFDR), 75 km from the middle of the area, began a volume at 16:25 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 9, 9:35 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Fort Sill, OK (KFSI), launched 12:00Z, 4.4 hours before the alert went out and 96 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 Sill, OK at 12:00Z on 2008-04-09Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Sill, OK at 12:00Z on 2008-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1936 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
249 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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 9, 3:58 AM CDT, 7 hours 25 minutes earlier.

Area forecast discussion, Apr 9, 3:58 AM CDT, 7 hours 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
358 AM CDT WED APR 9 2008

.DISCUSSION...
ACTIVE WEATHER OVER THE NEXT 24 TO 36 HOURS AS WEST COAST
TROUGH DIGS AND THEN LIFTS NORTHEAST ACROSS THE SOUTHERN
AND CENTRAL PLAINS. RICH GULF MOISTURE...AT LEAST AT THE
SURFACE...WILL LIFT NORTHWARD TODAY AS WARM FRONT. STILL REMAINS
TO BE SEEN HOW FAR NORTH WARM SECTOR WILL MAKE IT TODAY INTO
TONIGHT. REGARDLESS...ELEVATED INSTABILITY AND VERY STRONG LARGE
SCALE FORCING WILL RESULT IN WIDESPREAD SHOWERS AND THUNDERSTORMS
TODAY INTO TONIGHT.  HAVE ISSUED FLOOD WATCH FOR AREAS SOUTH AND
EAST OF I-44 (AND NORTH CENTRAL OK) AS MODELS AGREE THIS AREA
HAS BEST CHANCE OF RECEIVING 2 TO 3 INCH RAINFALL AMOUNTS WITH
LOCALIZED AMOUNTS OF 5 INCHES. AS NEGATIVELY TILTED TROUGH LIFT
NORTHEAST ON THURSDAY MUCH OF THE AREA WILL BE DRY SLOTTED WITH
RISK OF SEVERE STORMS EAST OF I-35 DURING FIRST PART OF THE DAY.
WILL LIKELY NEED A WIND ADVISORY FOR AT LEAST THE WESTERN HALF OF
THE FA WITH MAYBE SOME BLOWING DUST FROM WEST TEXAS ACROSS
SOUTHWEST OK/WESTERN NORTH TEXAS.

AREA WILL REMAIN IN BROAD CYCLONIC FLOW GOING INTO THE FIRST PART
OF THE WEEKEND. FOR NOW HAVE LOADED IN MAV/MEX NUMBERS BUT IF
CLOUDS HANG IN NORTH AND CENTRAL WILL NEED TO LOWER NUMBERS FRIDAY
INTO SATURDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  55  55  68  41 /  70  80  20  20
HOBART OK         56  52  68  41 /  80  80  10  10
WICHITA FALLS TX  67  57  76  44 /  90  90  10  10
GAGE OK           58  45  63  34 /  70  70  30  20
PONCA CITY OK     56  54  64  37 /  60  80  40  20
DURANT OK         68  64  75  49 /  70  90  40  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...FLOOD WATCH FROM 1 PM CDT THIS AFTERNOON THROUGH THURSDAY
     EVENING FOR OKZ008-012-013-018>020-023>032-037>048-050>052.

TX...FLOOD WATCH FROM 1 PM CDT THIS AFTERNOON THROUGH THURSDAY
     EVENING FOR TXZ086-089-090.

&&

99/99
Hazardous weather outlook, Apr 9, 9:05 AM CDT, 2 hours 18 minutes before
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In the hours before

Local storm report, Apr 9, 10:48 AM CDT, 35 minutes before
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Special weather statement, Apr 9, 10:52 AM CDT, 31 minutes before
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Special weather statement, Apr 9, 10:56 AM CDT, 27 minutes before
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Special weather statement, Apr 9, 11:01 AM CDT, 22 minutes before
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Special weather statement, Apr 9, 11:08 AM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1108 AM CDT WED APR 9 2008

TXZ087-091645-
KNOX TX-
1108 AM CDT WED APR 9 2008

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR KNOX COUNTY.

A STRONG THUNDERSTORM WAS LOCATED 4 MILES WEST OF KNOX CITY AT 1108
AM CDT...MOVING NORTHEAST AT 40 MPH.

SMALL HAIL IS LIKELY WITH THIS STORM.
Special weather statement, Apr 9, 11:18 AM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1118 AM CDT WED APR 9 2008

TXZ086-089-090-091645-
WICHITA TX-CLAY TX-ARCHER TX-
1118 AM CDT WED APR 9 2008

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR ARCHER...CLAY AND WICHITA
COUNTIES.

A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 8 MILES WEST OF
BURKBURNETT TO 8 MILES SOUTH OF HOLLIDAY AT 1118 AM CDT...MOVING
NORTHEAST AT 45 MPH.

HEAVY RAIN...FREQUENT LIGHTNING AND SMALL HAIL ARE LIKELY AS THE
STORMS MOVE THROUGH EASTERN PARTS OF WICHITA AND ARCHER
COUNTIES...INCLUDING THE BURKBURNETT AND WICHITA FALLS AREAS.

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 3:59 AM CDTFlood WatchOUNAtoka, Bryan, Caddo, Canadian, Carter, Cleveland and 25 more33 hr
Apr 9, 12:07 PM CDTSevere Thunderstorm WarningOUNJackson, Kiowa, Tillman38 min
Apr 9, 12:28 PM CDTSevere Thunderstorm WarningOUNTillman47 min
Apr 9, 4:50 PM CDTSevere Thunderstorm WarningOUNGarvin, McClain, Pontotoc, Pottawatomie, Seminole40 min
Apr 9, 5:24 PM CDTSevere Thunderstorm WarningOUNHughes, Pottawatomie, Seminole51 min
Apr 9, 6:09 PM CDTFlash Flood WarningOUNSeminole3 hr
Apr 9, 6:16 PM CDTSevere Thunderstorm WarningOUNHughes, Seminole44 min
Apr 9, 6:17 PM CDTSevere Thunderstorm WarningOUNHughes28 min
Apr 9, 6:23 PM CDTFlash Flood WarningOUNHughes3 hr
Apr 9, 6:31 PM CDTSevere Thunderstorm WarningOUNPontotoc, Seminole44 min
Apr 9, 6:53 PM CDTTornado WarningOUNHughes, Pontotoc37 min
Apr 9, 9:44 AM CDTSevere Thunderstorm WarningOUNFoard, Knox46 min
Apr 9, 10:14 AM CDTSevere Thunderstorm WarningOUNBaylor, Wilbarger46 min
Apr 9, 6:31 PM CDTSevere Thunderstorm WarningOUNBaylor, Foard, Hardeman, Knox, Wilbarger44 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.