Alert archive / Kansas / Tornado Watches in 2002

Tornado Watch 598

August 12, 200229 counties in Kansas; 7 counties in Oklahoma; Hemphill County, Lipscomb County, Ochiltree County, Texas

The Storm Prediction Center issued this tornado watch at Aug 12, 2002, 3:30 PM CDT for 29 counties in Kansas; 7 counties in Oklahoma; Hemphill County, Lipscomb County, Ochiltree County, Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Aug 12, 2002, 3:30 PM CDT (20:30 UTC)
Expired
Aug 12, 2002, 10:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 39 counties

Barber County, KS, Barton County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Harper County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kingman County, KS, Kiowa County, KS, Lane County, KS, Meade County, KS, Morton County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rush County, KS, Seward County, KS, Stafford County, KS, Stanton County, KS, Stevens County, KS, Sumner County, KS, Alfalfa County, OK, Beaver County, OK, Ellis County, OK, Harper County, OK, Texas County, OK, Woods County, OK, Woodward County, OK, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX

The radar

The Dodge City radar (KDDC), 27 km from the middle of the area, began a volume at 20:30 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Aug 12, 6:39 PM CDTSevere Thunderstorm WarningDDCGray66 min
Aug 12, 6:51 PM CDTSevere Thunderstorm WarningDDCNess54 min
Aug 12, 7:03 PM CDTSevere Thunderstorm WarningDDCFord57 min
Aug 12, 7:35 PM CDTSevere Thunderstorm WarningDDCMeade40 min
Aug 12, 7:45 PM CDTSevere Thunderstorm WarningDDCGray30 min
Aug 12, 7:49 PM CDTSevere Thunderstorm WarningDDCHodgeman56 min
Aug 12, 7:54 PM CDTTornado WarningDDCMeade51 min
Aug 12, 8:00 PM CDTSevere Thunderstorm WarningDDCClark60 min
Aug 12, 8:10 PM CDTFlash Flood WarningDDCGray3 hr
Aug 12, 8:15 PM CDTSevere Thunderstorm WarningDDCMeade60 min
Aug 12, 8:24 PM CDTSevere Thunderstorm WarningDDCFord66 min
Aug 12, 8:44 PM CDTSevere Thunderstorm WarningDDCMeade61 min
Aug 12, 8:47 PM CDTTornado WarningDDCClark28 min
Aug 12, 8:53 PM CDTSevere Thunderstorm WarningDDCPawnee, Stafford67 min
Aug 12, 8:58 PM CDTSevere Thunderstorm WarningDDCSeward47 min
Aug 12, 8:59 PM CDTSevere Thunderstorm WarningAMABeaver61 min
Aug 12, 9:05 PM CDTSevere Thunderstorm WarningICTReno55 min
Aug 12, 9:31 PM CDTTornado WarningICTReno59 min
Aug 12, 9:59 PM CDTSevere Thunderstorm WarningAMABeaver91 min

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 8.5 hours before the alert went out and 21 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 12:00Z on 2002-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 770 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 12:00Z on 2002-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 504 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
770 J/kg
Mixed-layer CIN
-469 J/kg
Mixed-layer LCL
1255 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
504 m²/s²
0-3 km storm-relative helicity
619 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 122032
SEL8  
SPC WW 122030
KSZ000-OKZ000-TXZ000-130300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 598
STORM PREDICTION CENTER NORMAN OK
330 PM CDT MON AUG 12 2002

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

   SOUTHWESTERN KANSAS                             
   NORTHWESTERN OKLAHOMA                           
   NORTHEASTERN TEXAS PANHANDLE                              

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 330 PM UNTIL 1000
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 105 STATUTE MILES EITHER SIDE
OF A LINE FROM 35 MILES NORTH OF GARDEN CITY KANSAS TO 50 MILES
EAST OF GAGE OKLAHOMA.

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.


DISCUSSION...COLD FRONT MOVING SWD THRU WRN KS WITH VERY UNSTABLE
SELY FLOW LOW LEVEL FLOW S OF FRONT.  INCREASINGLY FAVORABLE
VEERING SHEAR PROFILES ACROSS THIS AREA WITH APPROACH OF S/WV
TROUGH MOVING SEWD ACROSS ROCKIES.  THUNDERSTORMS EXPECTED TO
DEVELOP RAPIDLY NEXT HOUR ALONG/AHEAD OF FRONT QUICKLY BECOMING
SEVERE.  PARAMETERS FAVORABLE FOR SUPERCELLS ENHANCING LARGE HAIL
AND WIND POTENTIAL ALONG WITH ISOLATED TORNADOES.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. 
MEAN STORM MOTION VECTOR 27025.


...HALES

351,1001 372,1020 392,0991 371,0972

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 6:50 PM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Brown, Chase, Clay, Cloud and 27 more5 hr

Nearby

Tornado Watches in Kansas, 2002Tornado Watches in Oklahoma, 2002Tornado Watches in Texas, 2002Every tornado watch in 2002

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.