[LeArc] Weather Watch : 1@ 7/4/2003 1:18:12 AM

[learc@mailman.qth.net]

The following weather message is provided by McDonough County E.S.D.A.


WWUS20 KWNS 040617
SEL1  
SPC WW 040615
IAZ000-ILZ000-MNZ000-WIZ000-041200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 631 
NWS STORM PREDICTION CENTER NORMAN OK 
115 AM CDT FRI JUL 4 2003

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

       CENTRAL AND EASTERN IOWA
       NORTHERN ILLINOIS
       SOUTHEAST MINNESOTA
       WESTERN AND CENTRAL WISCONSIN

EFFECTIVE THIS FRIDAY MORNING FROM 115 AM UNTIL 700 AM CDT.

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

EXTREMELY DAMAGING THUNDERSTORM WIND GUSTS TO 90 MPH...LARGE HAIL
TO 2 INCHES IN DIAMETER...AND DANGEROUS LIGHTNING ARE POSSIBLE IN
THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 125 STATUTE MILES
EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHWEST OF EAU
CLAIRE WISCONSIN TO 35 MILES SOUTH SOUTHEAST OF CEDAR RAPIDS IOWA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.


OTHER WATCH INFORMATION...CONTINUE...WW 629...WW 630...


DISCUSSION...WIDESPREAD DAMAGING WIND EVENT APPEARS LIKELY OVER
SOUTHERN MN/NORTHERN IA INTO MUCH OF WI THROUGH THE NEXT SEVERAL
HOURS. LARGE FAST-MOVING BOW ECHO OVER NORTHERN IA WILL TRACK
EASTWARD AT OVER 40KT...WHILE SECOND BOW OVER CENTRAL MN TRACKS
EASTWARD AND MERGES WITH FIRST.  VERY UNSTABLE AIRMASS AND STRONG
WINDS ALOFT WILL CONTINUE TO FAVOR VERY DAMAGING WINDS AND SOME
HAIL.  MCS MAY TURN SLIGHTLY SOUTHEAST BEFORE DAYBREAK AS ACTIVITY
MOVES INTO MORE NORTHERLY STEERING FLOW.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 80
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27045.


...HART

;453,0892 412,0890 412,0935 453,0943; 
WWWW