Alert archive / Kansas / Tornado Watches in 2000

Tornado Watch 602

July 20, 2000Phillips County, Sedgwick County, Yuma County, Colorado; 33 counties in Kansas; 12 counties in Nebraska

The Storm Prediction Center issued this tornado watch at Jul 20, 2000, 4:45 PM MDT for Phillips County, Sedgwick County, Yuma County, Colorado; 33 counties in Kansas; 12 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 20, 2000, 4:45 PM MDT (22:45 UTC)
Expired
Jul 20, 2000, 11:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
All 48 counties

Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Ness County, KS, Norton County, KS, Pawnee County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Rush County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Dawson County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 60 km from the middle of the area, began a volume at 22:50 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 20, 4:48 PM MDTSevere Thunderstorm WarningGIDPhelps57 min
Jul 20, 4:50 PM MDTSevere Thunderstorm WarningGLDYuma55 min
Jul 20, 5:00 PM MDTSevere Thunderstorm WarningGIDGosper30 min
Jul 20, 5:17 PM MDTSevere Thunderstorm WarningGIDHarlan58 min
Jul 20, 5:33 PM MDTSevere Thunderstorm WarningGLDDundy57 min
Jul 20, 5:42 PM MDTSevere Thunderstorm WarningGLDHitchcock63 min
Jul 20, 5:45 PM MDTSevere Thunderstorm WarningGLDYuma60 min
Jul 20, 5:45 PM MDTSevere Thunderstorm WarningGIDKearney, Phelps45 min
Jul 20, 5:46 PM MDTSevere Thunderstorm WarningGIDPhillips44 min
Jul 20, 6:02 PM MDTFlash Flood WarningGLDYuma4 hr
Jul 20, 6:13 PM MDTTornado WarningGIDPhillips47 min
Jul 20, 6:21 PM MDTSevere Thunderstorm WarningGLDCheyenne, Rawlins54 min
Jul 20, 6:29 PM MDTSevere Thunderstorm WarningGLDDundy61 min
Jul 20, 6:53 PM MDTSevere Thunderstorm WarningGLDSherman67 min
Jul 20, 7:16 PM MDTSevere Thunderstorm WarningGLDThomas59 min
Jul 20, 7:40 PM MDTSevere Thunderstorm WarningGLDWallace65 min
Jul 20, 7:51 PM MDTSevere Thunderstorm WarningGLDLogan54 min
Jul 20, 7:54 PM MDTSevere Thunderstorm WarningGIDFurnas51 min
Jul 20, 7:57 PM MDTSevere Thunderstorm WarningGIDPhillips63 min
Jul 20, 8:01 PM MDTSevere Thunderstorm WarningLBFFrontier59 min
Jul 20, 8:24 PM MDTTornado WarningGLDGove, Logan51 min
Jul 20, 8:43 PM MDTSevere Thunderstorm WarningDDCNess47 min
Jul 20, 8:46 PM MDTSevere Thunderstorm WarningGLDWichita59 min
Jul 20, 9:05 PM MDTSevere Thunderstorm WarningDDCLane, Ness, Scott45 min
Jul 20, 9:20 PM MDTSevere Thunderstorm WarningDDCHodgeman, Ness, Pawnee40 min
Jul 20, 9:20 PM MDTSevere Thunderstorm WarningDDCRush40 min
Jul 20, 9:31 PM MDTSevere Thunderstorm WarningDDCFinney44 min
Jul 20, 9:45 PM MDTSevere Thunderstorm WarningDDCGray45 min
Jul 20, 9:55 PM MDTSevere Thunderstorm WarningDDCEdwards50 min
Jul 20, 9:57 PM MDTSevere Thunderstorm WarningDDCNess48 min
Jul 20, 10:03 PM MDTSevere Thunderstorm WarningDDCFord, Hodgeman42 min
Jul 20, 10:45 PM MDTSevere Thunderstorm WarningDDCClark, Comanche, Kiowa45 min

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.8 hours before the alert went out and 172 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, N. Platte/Lee Bi, NE at 12:00Z on 2000-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 480 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, N. Platte/Lee Bi, NE at 12:00Z on 2000-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 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
480 J/kg
Mixed-layer CIN
-280 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 202227
MKC WW 202220
COZ000-KSZ000-NEZ000-210500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 602
STORM PREDICTION CENTER NORMAN OK
520 PM CDT THU JUL 20 2000

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

   EXTREME EASTERN COLORADO                           
   WESTERN KANSAS                             
   SOUTHWESTERN NEBRASKA                           

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 545 PM UNTIL
MIDNIGHT CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 50 MILES NORTHEAST OF IMPERIAL NEBRASKA TO 30 MILES
SOUTH SOUTHEAST OF GARDEN CITY KANSAS.

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...  CONTINUE...WW 599...WW 600...WW 601...

DISCUSSION...CLUSTER OF SEVERE THUNDERSTORMS NOW MOVING INTO
EASTERN COLORADO WILL EVOLVE INTO A MAJOR MESOSCALE CONVECTIVE
SYSTEM AS IT APPROACHES REGION OF 3000 TO 4000 J/KG CAPES. STRONGLY
VEERING WIND PROFILE AND 40 TO 50 KT MID LEVEL NWLY FLOW WILL
PROVIDE FAVORABLE SHEAR FOR ROTATING STORMS WITH A FEW TORNADOES
AND SCATTERED LARGE HAIL EVENTS. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 27035.

...ROGASH

;410,0992 373,0985 373,1020 410,1024;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 20, 1:45 PM MDTTornado WatchSPCAdams, Arapahoe, Baca, Bent, Boulder, Broomfield and 22 more7 hr
Jul 19, 7:00 PM MDTSevere Thunderstorm WatchSPCArthur, Blaine, Brown, Buffalo, Chase, Cherry and 27 more6 hr
Jul 20, 3:00 PM MDTSevere Thunderstorm WatchSPCBanner, Box Butte, Cheyenne, Kimball, Morrill, Scotts Bluff and 1 more5 hr

Nearby

Tornado Watches in Kansas, 2000Tornado Watches in Nebraska, 2000Tornado Watches in Colorado, 2000Every tornado watch in 2000

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.