[spotters-illianaskywarn] Fwd: NOAA's National Weather Service SPC Mesoscale Discussion Update
- From: Keith Reedy <keithreedy@xxxxxxxxxxxx>
- To: spotters-illianaskywarn@xxxxxxxxxxxxx
- Date: Sat, 13 Aug 2011 16:54:48 -0400
Keith Reedy
keithreedy@xxxxxxxxxxxx
Begin forwarded message:
> From: National Weather Service <nws.noaa@xxxxxxxxxxxxxxxxxxxxxxx>
> Subject: NOAA's National Weather Service SPC Mesoscale Discussion Update
> Date: August 13, 2011 4:40:40 PM EDT
> To: keithreedy@xxxxxxxxxxxx
> Reply-To: National Weather Service <nws.noaa@xxxxxxxxxxxxxxxxxxxxxxx>
>
> You are subscribed to SPC Mesoscale Discussion for NOAA's National Weather
> Service.
>
>
> SPC MD 1969
> 08/13/2011 04:30 PM EDT
>
> MD 1969 CONCERNING SEVERE THUNDERSTORM WATCH 775... FOR MUCH OF CNTRL AND ERN
> IL THRU NRN IND...SERN LWR MI
>
>
> MESOSCALE DISCUSSION 1969
> NWS STORM PREDICTION CENTER NORMAN OK
> 0329 PM CDT SAT AUG 13 2011
>
> AREAS AFFECTED...MUCH OF CNTRL AND ERN IL THRU NRN IND...SERN LWR MI
>
> CONCERNING...SEVERE THUNDERSTORM WATCH 775...
>
> VALID 132029Z - 132200Z
>
> THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 775
> CONTINUES.
>
> ADDITIONAL WWS MAY BE NEEDED EAST AND SOUTH OF WW 775 WITHIN THE
> NEXT COUPLE OF HOURS.
>
> VIGOROUS PRE-FRONTAL CONVECTIVE DEVELOPMENT CONTINUES FROM SOUTHERN
> LOWER MICHIGAN ACROSS THE SOUTHERN CHICAGO METROPOLITAN
> AREA...SOUTHWESTWARD INTO AREAS JUST NORTH OF ST. LOUIS. THIS IS
> BEING AIDED BY STRONGER MID-LEVEL DYNAMIC FORCING FOR UPWARD
> VERTICAL MOTION...WHICH IS EXPECTED TO BEGIN PIVOTING EASTWARD
> THROUGH THE SOUTHERN UPPER GREAT LAKES/LOWER OHIO VALLEY REGION LATE
> THIS AFTERNOON AND EARLY EVENING. ACTIVITY IS ABOUT TO DEVELOP
> EASTWARD INTO THE AXIS OF STRONGEST PRE-FRONTAL SURFACE HEATING
> NORTHEAST OF ST. LOUIS THROUGH EAST CENTRAL ILLINOIS AND NORTHERN
> INDIANA...WHERE MID-LEVEL FLOW HAS STRENGTHENED IN A WEST
> SOUTHWESTERLY BELT TO AROUND 40 KTS. STEEP LOW-LEVEL LAPSE RATES
> WILL BE CONDUCIVE TO LOCALLY STRONG DOWNBURSTS...AND IT SEEMS
> PROBABLE THAT COLD POOLS WILL EVENTUALLY CONSOLIDATE...WITH THE
> POTENTIAL FOR A MORE ORGANIZED DAMAGING WIND THREAT BY 23-00Z.
>
> ..KERR.. 08/13/2011
>
> ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...DTX...IWX...GRR...IND...PAH...LOT...ILX...LSX...
>
> LAT...LON 39588995 41228805 41608636 42668391 41588390 38878784
> 38548841 38608959 39588995
>
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