AREAS AFFECTED...NERN IL THROUGH SERN WI
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 202050Z - 202215Z
PROBABILITY OF WATCH ISSUANCE...40 PERCENT
SUMMARY...STORMS HAVE BECOME A LITTLE BETTER ORGANIZED AS A LINE
SEGMENT OVER NCNTRL IL. THIS ACTIVITY WILL POSE A RISK FOR DAMAGING
WIND AS IT MOVES INTO NERN IL AND SERN WI. TRENDS ARE BEING
MONITORED FOR A POSSIBLE WW.
DISCUSSION...STORMS DEVELOPING ALONG A PRE-FRONTAL CONVERGENCE AXIS
HAVE BECOME BETTER ORGANIZED AS A LINE SEGMENT. ACTIVITY IS FORMING
WITHIN AN ENVIRONMENT CHARACTERIZED BY 30-35F BOUNDARY LAYER
TEMPERATURE-DEWPOINT SPREADS...STEEP LOW-MID LEVEL LAPSE RATES AND
MODERATE /1000-1500 J/KG/ INSTABILITY. THIS ENVIRONMENT IS FAVORABLE
FOR ISOLATED STRONG TO DAMAGING WIND GUSTS...ESPECIALLY WITH STORMS
THAT HAVE HIGHER REFLECTIVITY CORES ABOVE 5 KM. CONCERN IS THAT AS
STORMS BECOME MORE LINEAR...THE THREAT MAY BECOME A LITTLE MORE
WIDESPREAD.
..DIAL/WEISS.. 05/20/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LOT...MKX...
LAT...LON 43078792 42098789 41728814 41868896 43088833 43078792
