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THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 311 UNTIL 3 PM CDT THIS AFTERNOON WHICH REPLACES A PORTION OF SEVERE THUNDERSTORM WATCH 310. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS IN IOWA THE NEW WATCH INCLUDES 10 COUNTIES IN CENTRAL IOWA JASPER POWESHIEK IN SOUTH CENTRAL IOWA APPANOOSE LUCAS MAHASKA MARION MONROE WAYNE IN SOUTHEAST IOWA DAVIS WAPELLO THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, BLOOMFIELD, CENTERVILLE, CHARITON, CORYDON, GRINNELL, HUMESTON, KNOXVILLE, NEWTON, OSKALOOSA, OTTUMWA, PELLA, AND SEYMOUR.

* PRIMARY THREATS INCLUDE... A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE. WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS TO 80 MPH POSSIBLE. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 50% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 30% PROB OF 10 OR MORE SEVERE WIND EVENTS : 90% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 50% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : >95% MEAN STORM MOTION /MPH/ : E 50

* AFFECTED AREAS: APPANOOSE, IA ... DAVIS, IA ... JASPER, IA ... LUCAS, IA ... MAHASKA, IA ... MARION, IA ... MONROE, IA ... POWESHIEK, IA ... WAPELLO, IA ... WAYNE, IA