Tornado Watch 417

Issued

Jun 9, 2004, 1:40 PM MDT (19:40 UTC)

Expired

Jun 9, 2004, 8:00 PM MDT

In force

6 hr

Issued by

the Storm Prediction Center

The Cheyenne radar (KCYS), 73 km from the middle of the area, began a volume at 19:40 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 1155Jun 9, 12:42 PM MDT
• Mesoscale Discussion 1163Jun 9, 4:42 PM MDT

000 
WWUS20 KWNS 091939
SEL7  
SPC WW 091940
COZ000-NEZ000-WYZ000-100200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 417
NWS STORM PREDICTION CENTER NORMAN OK
140 PM MDT WED JUN 9 2004

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

       EASTERN COLORADO
       WESTERN NEBRASKA PANHANDLE
       SOUTHEAST WYOMING

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 140 PM UNTIL
800 PM MDT.

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 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES NORTH NORTHWEST OF DOUGLAS WYOMING TO 55
MILES WEST OF ELKHART 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 413...WW 414...WW 415...WW
416...

DISCUSSION...CONTINUED UPSLOPE INTO ERN CO/SERN WY BECOMING
INCREASINGLY UNSTABLE WITH HEATING.  AS STRONG TROUGH APPROACHES
FROM THE W...DEEP LAYER SHEAR AND UPWARD MOTION SUPPORTS INCREASING
THREAT OF TORNADIC SUPERCELL DEVELOPMENT ALONG AND E OF FRONT RANGE
AND NEWD OFF HIGHER TERRAIN SERN WY.

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 24025.


...HALES

430,1040 365,1012 365,1041 430,1071

Tornado Watches in Colorado, 2004Tornado Watches in Wyoming, 2004Tornado Watches in Nebraska, 2004Every tornado watch in 2004

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.