CHICAGO – Particularly Dangerous Situation Tornado Watch in effect until 4:00 PM CST this afternoon for portions of eastern Iowa, Illinois, northwest Indiana, northeast Missouri, southeast Wisconsin, and Lake Michigan.
Tornado Warnings:
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 561 NWS STORM PREDICTION CENTER NORMAN OK 840 AM CST SUN NOV 17 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF EASTERN IOWA ILLINOIS NORTHWEST INDIANA NORTHEAST MISSOURI SOUTHEAST WISCONSIN LAKE MICHIGAN * EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 840 AM UNTIL 400 PM CST. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... * PRIMARY THREATS INCLUDE... SEVERAL INTENSE TORNADOES LIKELY SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 80 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTH SOUTHEAST OF SCOTT AFB ILLINOIS TO 40 MILES NORTHEAST OF MADISON WISCONSIN. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && DISCUSSION...ONE OR MORE BROKEN BANDS OF SUPERCELLS ARE EXPECTED TO DEVELOP THIS MORNING AND RAPIDLY SPREAD EAST/NORTHEAST ACROSS THE WATCH AREA TODAY. GIVEN THE COMBINATION OF MODERATE INSTABILITY AND VERY STRONG VERTICAL SHEAR...CONDITIONS WILL BE FAVORABLE FOR LONG TRACKED...SIGNIFICANT TORNADOES. LARGE HAIL AND CORRIDORS OF WIND DAMAGE WILL ALSO BE LIKELY. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24050. ...MEAD