Tornado Watch 493

Issued

Jun 9, 2003, 4:50 PM CDT (21:50 UTC)

Expired

Jun 9, 2003, 10:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Grand Island radar (KUEX), 83 km from the middle of the area, began a volume at 21:50 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.

• Mesoscale Discussion 1271Jun 9, 2:05 PM CDT
• Mesoscale Discussion 1272Jun 9, 3:42 PM CDT
• Mesoscale Discussion 1273Jun 9, 4:30 PM CDT
• Mesoscale Discussion 1277Jun 9, 6:30 PM CDT
• Mesoscale Discussion 1284Jun 9, 9:00 PM CDT

000 
WWUS20 KWNS 092148
SEL3  
SPC WW 092150
KSZ000-NEZ000-100300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 493 
NWS STORM PREDICTION CENTER NORMAN OK 
450 PM CDT MON JUN 9 2003

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

       NORTH CENTRAL KANSAS
       CENTRAL AND SOUTH CENTRAL NEBRASKA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 450 PM UNTIL 1000
PM 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 ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES NORTHWEST OF BURWELL NEBRASKA TO 45 MILES
EAST SOUTHEAST OF HILL 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 491...WW 492...


DISCUSSION...THUNDERSTORMS WILL DEVELOP ALONG THE DRYLINE FROM NW KS
NWD INTO CENTRAL NEB DURING THE NEXT 1-2 HOURS.  MLCAPE VALUES NEAR
3000 J/KG TO THE E OF THE DRYLINE...ALONG WITH SUFFICIENT DEEP LAYER
SHEAR... WILL SUPPORT SUPERCELL DEVELOPMENT.  STEEP LAPSE RATES AND
STRONG INSTABILITY WILL FAVOR VERY LARGE HAIL WITH THE STRONGEST
STORMS.  ADDITIONALLY...EXPECT THREAT FOR TORNADOES TO INCREASE THIS
EVENING AS LOW-LEVEL MOISTURE GRADUALLY INCREASES AND
TEMPERATURES-DEW POINT SPREADS DECREASE AFTER 00Z.

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 550.
MEAN STORM MOTION VECTOR 27020.


...THOMPSON

420,0980 390,0973 390,1003 420,1010

Tornado Watches in Nebraska, 2003Tornado Watches in Kansas, 2003Every tornado watch in 2003

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.