Alert archive / Kansas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 710

August 21, 199735 counties in Kansas

The Storm Prediction Center issued this severe thunderstorm watch at Aug 21, 1997, 9:45 PM CDT for 35 counties in Kansas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 21, 1997, 9:45 PM CDT (02:45 UTC)
Expired
Aug 22, 1997, 4:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 35 counties

Barber County, KS, Barton County, KS, Clay County, KS, Cloud County, KS, Comanche County, KS, Dickinson County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Harper County, KS, Harvey County, KS, Jewell County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Marion County, KS, McPherson County, KS, Mitchell County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Smith County, KS, Stafford County, KS, Sumner County, KS, Washington County, KS

The radar

The Wichita radar (KICT), 112 km from the middle of the area, began a volume at 02:46 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

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

IssuedProductOfficeCountiesLasted
Aug 21, 9:46 PM CDTSevere Thunderstorm WarningGIDPhillips44 min
Aug 21, 9:57 PM CDTSevere Thunderstorm WarningICTEllsworth, Lincoln43 min
Aug 21, 9:59 PM CDTTornado WarningGIDRooks46 min
Aug 21, 10:03 PM CDTSevere Thunderstorm WarningDDCEllis62 min
Aug 21, 10:16 PM CDTSevere Thunderstorm WarningICTRussell64 min
Aug 21, 10:37 PM CDTSevere Thunderstorm WarningICTEllsworth48 min
Aug 21, 10:51 PM CDTFlash Flood WarningGIDOsborne, Rooks4 hr
Aug 21, 11:01 PM CDTSevere Thunderstorm WarningDDCNess, Rush59 min
Aug 21, 11:05 PM CDTSevere Thunderstorm WarningDDCEllis60 min
Aug 21, 11:11 PM CDTSevere Thunderstorm WarningICTRice64 min
Aug 21, 11:21 PM CDTSevere Thunderstorm WarningICTEllsworth34 min
Aug 21, 11:23 PM CDTSevere Thunderstorm WarningICTBarton62 min
Aug 21, 11:43 PM CDTSevere Thunderstorm WarningDDCPawnee47 min
Aug 21, 11:56 PM CDTSevere Thunderstorm WarningGIDJewell49 min
Aug 22, 12:09 AM CDTSevere Thunderstorm WarningICTRice61 min
Aug 22, 12:17 AM CDTFlash Flood WarningICTRice3 hr
Aug 22, 12:24 AM CDTSevere Thunderstorm WarningICTBarton36 min
Aug 22, 12:25 AM CDTSevere Thunderstorm WarningDDCStafford35 min
Aug 22, 12:25 AM CDTSevere Thunderstorm WarningICTReno60 min
Aug 22, 12:42 AM CDTSevere Thunderstorm WarningDDCPratt48 min
Aug 22, 12:44 AM CDTSevere Thunderstorm WarningICTKingman61 min
Aug 22, 1:11 AM CDTSevere Thunderstorm WarningICTHarper64 min
Aug 22, 1:35 AM CDTSevere Thunderstorm WarningICTSumner60 min
Aug 22, 1:37 AM CDTSevere Thunderstorm WarningICTSedgwick58 min

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 2.8 hours before the alert went out and 133 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 1997-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3676 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 1997-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 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
3676 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1196 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
4.0
Supercell composite
21.2

Open this sounding in Storm Lab

The text

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

849 
WWUS9 KMKC 220227
SEL0  
MKC WW 220227
KSZ000-220900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 710
STORM PREDICTION CENTER NORMAN OK
927 PM CDT THU AUG 21 1997

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   CENTRAL KANSAS                             

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 945 PM UNTIL
400 AM CDT.

HAIL TO 2 1/4 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 85
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 65 STATUTE MILES
EAST AND WEST OF A LINE FROM 25 MILES SOUTHEAST OF MEDICINE LODGE
KANSAS TO 45 MILES NORTHWEST OF CONCORDIA KANSAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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...  CONTINUE...WW 708...WW 709...

DISCUSSION...A FEW THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS
POSSIBLE THROUGH THE EARLY MORNING HOURS ACROSS CENTRAL KS...WHERE
MODEST INFLOW OF VERY RICH BOUNDARY LAYER AIR /850 MB DEWPOINT OF
19C AT DODGE CITY/ BENEATH 25-30 KT MID-LEVEL NW FLOW APPEARS 
FAVORABLE FOR A FEW BRIEF SUPERCELLS.  ACTIVITY LIKELY TO MERGE
INTO A NEARLY SOLID LINE OF WARM ADVECTION STORMS ALONG NNW/SSE
BOUNDARY LATER TONIGHT.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 1/4 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 75
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 520.  MEAN STORM
MOTION VECTOR 32025.


...CORFIDI

370,0992 400,0992 400,0970 370,0970

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 21, 7:00 PM CDTTornado WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Lane and 11 more6 hr
Aug 21, 11:45 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Cowley, Edwards and 31 more4 hr

Nearby

Severe Thunderstorm Watches in Kansas, 1997Every severe thunderstorm watch in 1997

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.