Alert archive / Nebraska / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 628

July 27, 200025 counties in Kansas; 30 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jul 27, 2000, 10:45 PM CDT for 25 counties in Kansas; 30 counties in Nebraska. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jul 27, 2000, 10:45 PM CDT (03:45 UTC)
Expired: Jul 28, 2000, 3:00 AM CDT
In force: 4 hr
Issued by: the Storm Prediction Center

All 55 counties

Barton County, KS, Decatur County, KS, Ellis County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Lane County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Pawnee County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stafford County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Adams County, NE, Blaine County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Howard County, NE, Kearney County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Webster County, NE

The radar

The Goodland radar (KGLD), 138 km from the middle of the area, began a volume at 03:48 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

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

Issued	Product	Office	Counties	Lasted
Jul 27, 11:44 PM CDT	Severe Thunderstorm Warning	GID	Dawson	61 min
Jul 28, 12:06 AM CDT	Severe Thunderstorm Warning	LBF	Custer	54 min
Jul 28, 1:37 AM CDT	Severe Thunderstorm Warning	GID	Howard	23 min
Jul 28, 2:16 AM CDT	Severe Thunderstorm Warning	GID	Adams	29 min
Jul 28, 2:25 AM CDT	Flash Flood Warning	DDC	Edwards, Pawnee	3 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.8 hours before the alert went out and 146 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3838 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1184 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 12.8

Open this sounding in Storm Lab

The text

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

475 
WWUS9 KMKC 280319
SEL8  
MKC WW 280307
KSZ000-NEZ000-280800-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 628
STORM PREDICTION CENTER NORMAN OK
1007 PM CDT THU JUL 27 2000

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

   NORTHWEST AND NORTH CENTRAL KANSAS                             
   CENTRAL NEBRASKA                           

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1045 PM UNTIL
300 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 95 STATUTE MILES
EITHER SIDE OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF HILL CITY
KANSAS TO 30 MILES NORTHEAST OF BROKEN BOW NEBRASKA.

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...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 627.  WATCH NUMBER 627 WILL NOT BE
IN EFFECT AFTER 1045 PM CDT.

DISCUSSION...SQUALL LINE HAS ACCELERATED DURING THE PAST HOUR AND
IS EXPECTED TO MOVE ESEWD INTO CNTRL NEB/NRN KS OVERNIGHT. WIND
DAMAGE THREAT APPEARS TO BE INCREASING GIVEN ORGANIZED COLD POOL
FORMATION. 

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 28035.

...VESCIO

385,1015 421,1005 411,0973 375,0984

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 5:00 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Butler, Chautauqua, Comanche, Cowley, Edwards and 12 more	6 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 2000 Severe Thunderstorm Watches in Kansas, 2000 Every severe thunderstorm 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.