Tornado Watch 288

Issued

May 22, 2007, 3:04 PM CDT (20:04 UTC)

Expired

May 22, 2007, 11:00 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Grand Island radar (KUEX), 130 km from the middle of the area, began a volume at 20:07 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.

Two or more tornadoes

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 859May 22, 2:26 PM CDT
• Mesoscale Discussion 861May 22, 6:36 PM CDT
• Mesoscale Discussion 863May 22, 9:41 PM CDT

000
WWUS20 KWNS 222008
SEL8  
SPC WW 222008
KSZ000-NEZ000-230400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 288
NWS STORM PREDICTION CENTER NORMAN OK
305 PM CDT TUE MAY 22 2007

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

       NORTHWEST AND WEST CENTRAL KANSAS
       SOUTHWEST AND SOUTH CENTRAL NEBRASKA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1100 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 APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF
BURWELL NEBRASKA TO 95 MILES SOUTH OF HILL CITY KANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).

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 287...

DISCUSSION...LARGE SCALE HEIGHT FALLS ARE BEGINNING TO SPREAD EWD
ACROSS ERN CO AT MID-AFTN.  COMBINATION OF HEATING AND THE
INCREASING UVV WILL ACT TO ERODE INHIBITION RESULTING IN CONVECTIVE
INITIATION BY LATE AFTN ALONG COLD FRONT/LEE-TROUGH.  VERTICAL SHEAR
WILL BE SUFFICIENT FOR SUPERCELLS WITH VERY LARGE HAIL.  LOW-LEVEL
SRH WILL ALSO BE CONDUCIVE FOR TORNADOES...PARTICULARLY ALONG THE
TRACK OF THE SFC LOW.

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
500. MEAN STORM MOTION VECTOR 24025.


...RACY/EVANS

Tornado Watches in Kansas, 2007Tornado Watches in Nebraska, 2007Every tornado watch in 2007

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.