Tornado Watch 368

Issued

May 25, 2008, 7:54 PM CDT (00:54 UTC)

Expired

May 26, 2008, 2:03 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

Two or more tornadoes

70%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

95%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

95%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1029May 25, 5:08 PM CDT
• Mesoscale Discussion 1033May 25, 6:39 PM CDT
• Mesoscale Discussion 1036May 25, 9:23 PM CDT
• Mesoscale Discussion 1040May 25, 10:59 PM CDT
• Mesoscale Discussion 1041May 25, 11:28 PM CDT

000
WWUS20 KWNS 260055
SEL8  
SPC WW 260055
IAZ000-ILZ000-MOZ000-260800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 368
NWS STORM PREDICTION CENTER NORMAN OK
755 PM CDT SUN MAY 25 2008

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

       SOUTHERN...CENTRAL AND EASTERN IOWA
       NORTHWESTERN ILLINOIS
       NORTHEAST MISSOURI

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 755 PM UNTIL
300 AM 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 130 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF DUBUQUE
IOWA TO 15 MILES EAST OF LAMONI IOWA.  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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 363. WATCH NUMBER 363 WILL NOT BE IN EFFECT AFTER
755 PM CDT. CONTINUE...WW 358...WW 360...WW 361...WW 362...WW
364...WW 365...WW 366...WW 367...

DISCUSSION...TSTMS/SUPERCELLS EXPECTED TO PERSIST ALONG AND AHEAD OF
COLD FRONT AND PREFRONTAL TROUGH OVER IA/NW IL.  OTHER STORMS MAY
FORM LATER THIS EVENING INVOF DIFFUSE WARM FRONT OVER FAR WRN IL. 
AMPLE SHEAR AND LOW-LEVEL MOISTURE ARE PRESENT TO SUGGEST THREAT FOR
ADDITIONAL TORNADOES...DESPITE EXPECTED TENDENCY FOR STORM MODE TO
BECOME LESS DISCRETE WITH TIME.  OTHER SVR STORMS...MAINLY POSING A
THREAT FOR HIGH WIND AND PERHAPS HAIL...EXPECTED TO
FORWARD-PROPAGATE ENE INTO WW FROM MCS NOW IN NE KS/SE NEB.

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 27035.


...CORFIDI

Tornado Watches in Iowa, 2008Tornado Watches in Illinois, 2008Every tornado watch in 2008

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.