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April 8-10 Severe threat


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A couple semi's are on their side on I-80 near the Stockton exit in Iowa.  Looks like it's about the same spot where the tornado developed.  

very strong signature from that cell near DeWitt IA, and probably going to get very close to Clinton, IA. looking quite nasty on the radar.

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mcd0258.gif

   MESOSCALE DISCUSSION 0258
   NWS STORM PREDICTION CENTER NORMAN OK
   0520 PM CDT THU APR 09 2015

   AREAS AFFECTED...SOUTHERN LOWER MI

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

   VALID 092220Z - 092345Z

   PROBABILITY OF WATCH ISSUANCE...40 PERCENT

   SUMMARY...AT LEAST SOME SEVERE RISK...POTENTIALLY INCLUDING A
   TORNADO...MAY EXIST ACROSS SOUTHERN LOWER MI THROUGH EARLY EVENING
   IN VICINITY OF A WARM FRONT...WITH A GREATER COVERAGE OF
   STRONGER/POTENTIALLY SEVERE STORMS MOVING INTO THE REGION LATER THIS
   EVENING.

   DISCUSSION...A MODESTLY DEFINED WARM FRONT WILL CONTINUE TO SPREAD
   NORTHWARD ACROSS SOUTHERN LOWER MI THIS EVENING. POSSIBLY AIDED BY A
   WEAK MCV OVER SOUTHERN LAKE MI/FAR SOUTHWEST MI...A COUPLE OF
   THUNDERSTORMS HAVE APPEARED TO EXHIBIT AT LEAST WEAK SUPERCELL
   CHARACTERISTICS ACROSS SOUTHWEST LOWER MI AS 0F 22Z. LOW-LEVEL
   SHEAR/SRH IN VICINITY OF THE WARM FRONT...WITH THE GRAND
   RAPIDS/DETROIT WSR-88D VWPS INDICATIVE OF 250+ M2/S2 0-1 KM
   SRH...WILL CONTINUE TO SUPPORT THE POSSIBILITY OF A FEW SUPERCELLS
   POTENTIALLY CAPABLE OF A BRIEF TORNADO AS THE BOUNDARY LAYER
   CONTINUES TO MODESTLY WARM/MOISTEN IN TANDEM WITH THE WARM FRONT.
   PENDING UPSTREAM ORGANIZATION OF STORMS OVER NORTHERN IL/FAR
   SOUTHERN WI...A MORE CERTAIN ROUND OF STRONG/POTENTIALLY SEVERE
   STORMS COULD MOVE INTO LOWER MI LATER THIS EVENING.

   ..GUYER/HART.. 04/09/2015


   ATTN...WFO...DTX...IWX...GRR...

   LAT...LON   42738629 42908535 42728365 42158319 41768360 41858641
               42738629


 

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TORNADO WARNING FOR...  

EAST CENTRAL CLINTON COUNTY IN EAST CENTRAL IOWA...  

SOUTHWESTERN CARROLL COUNTY IN NORTHWEST ILLINOIS...  

NORTHWESTERN WHITESIDE COUNTY IN NORTHWEST ILLINOIS...  

 

* UNTIL 615 PM CDT  

 

* AT 546 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO  

WAS LOCATED NEAR CAMANCHE...AND MOVING NORTHEAST AT 40 MPH.  

 

THIS IS A PARTICULARLY DANGEROUS SITUATION.  

 

HAZARD...DAMAGING TORNADO.  

 

SOURCE...RADAR CONFIRMED TORNADO.  

 

IMPACT...YOU ARE IN A LIFE THREATENING SITUATION. FLYING DEBRIS  

WILL BE DEADLY TO THOSE CAUGHT WITHOUT SHELTER. MOBILE  

HOMES WILL BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES...  

BUSINESSES AND VEHICLES IS LIKELY AND COMPLETE DESTRUCTION  

POSSIBLE.  

 

* THE TORNADO WILL BE NEAR...  

FULTON AND EAST CLINTON AROUND 555 PM CDT.

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back to Clinton IA for a sec. is it just me, or is the SRV showing either a transfer of rotational energy or a 2nd potential tornado near Clinton Airport to the SE?

 

SpotterNetwork report just came in reporting a multi-vortex tornado crossed the highway west of Clinton.

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