Alert archive / Oklahoma / Tornado Watches in 2007

Tornado Watch 295

May 23, 20077 counties in Kansas; 9 counties in Oklahoma; 9 counties in Texas

The Storm Prediction Center issued this tornado watch at May 23, 2007, 10:48 PM CDT for 7 counties in Kansas; 9 counties in Oklahoma; 9 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 23, 2007, 10:48 PM CDT (03:48 UTC)
Expired
May 24, 2007, 2:47 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
60 kt
All 25 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Kiowa County, KS, Meade County, KS, Pratt County, KS, Stafford County, KS, Alfalfa County, OK, Beaver County, OK, Dewey County, OK, Ellis County, OK, Harper County, OK, Major County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Carson County, TX, Gray County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Dodge City radar (KDDC), 88 km from the middle of the area, began a volume at 03:50 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
95%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 23, 10:58 PM CDTFlash Flood WarningAMARoberts3 hr
May 23, 11:00 PM CDTSevere Thunderstorm WarningAMALipscomb60 min
May 23, 11:26 PM CDTSevere Thunderstorm WarningAMABeaver49 min
May 23, 11:30 PM CDTSevere Thunderstorm WarningOUNEllis60 min
May 23, 11:33 PM CDTSevere Thunderstorm WarningAMAOchiltree57 min
May 23, 11:42 PM CDTSevere Thunderstorm WarningAMARoberts63 min
May 24, 12:00 AM CDTSevere Thunderstorm WarningAMALipscomb45 min
May 24, 12:21 AM CDTSevere Thunderstorm WarningAMAHemphill54 min
May 24, 12:39 AM CDTSevere Thunderstorm WarningOUNEllis51 min
May 24, 12:40 AM CDTTornado WarningDDCClark, Kiowa50 min
May 24, 12:57 AM CDTTornado WarningOUNEllis33 min
May 24, 1:06 AM CDTTornado WarningOUNWoodward16 min
May 24, 1:23 AM CDTSevere Thunderstorm WarningOUNWoodward52 min
May 24, 1:25 AM CDTSevere Thunderstorm WarningDDCKiowa37 min
May 24, 2:04 AM CDTSevere Thunderstorm WarningOUNRoger Mills41 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 3.8 hours before the alert went out and 88 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, Dodge City, at 00:00Z on 2007-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 879 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, Dodge City, at 00:00Z on 2007-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 227 square meters per square second.19395878Sfc1 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
879 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1377 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
227 m²/s²
0-3 km storm-relative helicity
418 m²/s²
Significant tornado parameter
1.2
Supercell composite
5.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WWUS20 KWNS 240351
SEL5  
SPC WW 240351
KSZ000-OKZ000-TXZ000-240800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 295
NWS STORM PREDICTION CENTER NORMAN OK
1050 PM CDT WED MAY 23 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTHWEST KANSAS
       NORTHWEST OKLAHOMA INCLUDING THE EASTERN PANHANDLE
       EASTERN TEXAS PANHANDLE

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1050 PM
UNTIL 300 AM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHWEST OF
MEDICINE LODGE KANSAS TO 55 MILES EAST SOUTHEAST OF BORGER TEXAS.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 293. WATCH NUMBER 293 WILL NOT BE IN EFFECT AFTER
1050 PM CDT. CONTINUE...WW 294...

DISCUSSION...SUPERCELLS WILL CONTINUE AHEAD OF EJECTING MID/UPPER
LEVEL TROUGH AND ASSOCIATED STRONG SURFACE COLD FRONT NOW MOVING
INTO SWRN KS/CENTRAL TX PANHANDLE TONIGHT.  SLY LLJ WILL INTENSIFY
IN EXCESS OF 50 KT AND PROVIDE AMPLE LOW AND DEEP LAYER SHEAR FOR
INTENSE ROTATION WITH THE STRONGER CORES.  THIS WILL INCREASE THE
POTENTIAL FOR VERY LARGE HAIL/SEVERE WIND GUSTS...WITH TORNADO
THREAT PERSISTING WELL INTO THE NIGHT AS STORMS REMAIN ROOTED NEAR
THE SURFACE.  LARGER MCS WILL LIKELY EVOLVE ALONG THE COLD FRONT
OVERNIGHT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26025.


...EVANS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 7:10 PM CDTMesoscale DiscussionSPCAtchison, Barton, Brown, Butler, Chase, Clay and 36 more35 min
May 23, 7:48 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Chase, Clay, Cloud, Dickinson and 22 more7 hr
May 23, 10:12 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Finney, Ford, Grant and 12 more63 min
May 23, 11:29 PM CDTMesoscale DiscussionSPCBarton, Butler, Chase, Clay, Cloud, Dickinson and 25 more91 min
May 24, 1:51 AM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Clay, Coffey and 28 more54 min
May 24, 2:06 AM CDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kingman, Kiowa, Pratt and 1 more54 min
May 24, 2:41 AM CDTSevere Thunderstorm WatchSPCAnderson, Brown, Butler, Chase, Coffey, Cowley and 25 more3 hr
May 24, 5:19 AM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Coffey, Cowley and 16 more56 min
May 24, 10:04 AM CDTMesoscale DiscussionSPCCarter, Coal, Garvin, Jefferson, Johnston, Love and 4 more116 min
May 24, 2:49 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 18 more2 hr

Nearby

Tornado Watches in Oklahoma, 2007Tornado Watches in Texas, 2007Tornado Watches in Kansas, 2007Every tornado watch in 2007

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.