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Particularly Dangerous Situation (PDS) Tornado
Watch 77

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Initial
RADAR image for Watch 77
Initial
List of Counties in Watch 77 (WOU)
Related md0273
for watch 77
Note: The
Watch Probability Tables are experimental.

Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
SEL7

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 77
NWS STORM PREDICTION CENTER NORMAN OK
840 PM CST SUN MAR 12 2006

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

SOUTHEAST IOWA
NORTHERN AND CENTRAL ILLINOIS
NORTHWEST INDIANA
EXTREME EASTERN KANSAS
MUCH OF MISSOURI
SOUTHEAST WISCONSIN
LAKE MICHIGAN

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 840 PM UNTIL
400 AM CST.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 110 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 50 MILES EAST SOUTHEAST OF
MARSEILLES ILLINOIS TO 45 MILES NORTH NORTHWEST OF JOPLIN
MISSOURI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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 73...TORNADO WATCH NUMBER 75. WATCH NUMBER 73 75 WILL
NOT BE IN EFFECT AFTER 840 PM CST. CONTINUE...WW 74...WW 76...

DISCUSSION...WIDESPREAD SEVERE STORMS ARE AFFECTING PARTS OF
WESTERN/CENTRAL MO TONIGHT...AS WELL AS PARTS OF NORTHERN AND
CENTRAL IL. THESE AREAS WILL CONTINUE TO BE AFFECTED BY SUPERCELL
STORMS CAPABLE OF VERY LARGE HAIL...DAMAGING WINDS...AND STRONG
TORNADOES. THREAT WILL LIKELY PERSIST MUCH OF THE NIGHT AS LOW
LEVEL JET BECOMES VERY STRONG AND UPPER SYSTEM APPROACHES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 25040.

...HART

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Page last modified:
March 13, 2006

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