HIGH RISK AREA!!!June 12th, 2013 at 11:57 am by Bill Steffen under Bill's Blog, News, Weather
The Storm Prediction Center is upgrading to a very rare HIGH RISK AREA for tornadoes and Severe Thunderstorms! (It was only a moderate risk for the Oklahoma tornadoes). SPC says: “THE 1630Z CONVECTIVE OUTLOOK WILL INCLUDE A CATEGORICAL UPGRADE TO HIGH RISK FOR DAMAGING WIND POTENTIAL FROM EXTREME EASTERN IOWA INTO NORTHERN PORTIONS OF ILLINOIS AND INDIANA…AND NORTHWEST PORTIONS OF OHIO. IN ADDITION…TORNADO PROBABILITIES WILL BE INCREASED TO 15 PERCENT OVER PORTIONS OF EXTREME EASTERN IOWA INTO NORTHWEST ILLINOIS. DISCUSSION…SVR TSTMS ARE EXPECTED TO DEVELOP THIS AFTERNOON IN THE VICINITY OF EASTERN IOWA/NORTHWEST ILLINOIS AND QUICKLY BECOME SEVERE SUPERCELLS WITH A RISK FOR TORNADOES…POSSIBLY SIGNIFICANT…WITH UPSCALE GROWTH INTO A FAST-MOVING AND FORWARD-PROPAGATING MESOSCALE CONVECTIVE SYSTEM. WIDESPREAD DAMAGING WINDS ARE LIKELY ACROSS THE HIGH RISK AREA…WITH SOME SIGNIFICANT SEVERE GUSTS POSSIBLE.”
Click on the map to enlarge. This is accumulated rainfall over the past week. Trees are more apt to be uprooted in strong wind when the ground is saturated. Note where the heavy rain has fallen in SW Michigan and across N. Illinois and N. Indiana. Those are areas that will be more susceptible to toppling trees. Right now, if you’re in N. Illinois, N. Indiana, W. Ohio or extreme SW or S. Michigan – think about where to park your vehicles so any tree damage can be minimized. Take down hanging baskets, make sure the yard is picked up and the garbage bin won’t go flying down the street. For those of you esp. in N. Illinois and far NE Iowa…remember the tornado safety rules….Lowest Floor, Away from Windows – esp. windows that face south and west, try to avoid getting caught in a vehicle on the open road.