[spotters-illianaskywarn] Fwd: NOAA's National Weather Service SPC Mesoscale Discussion Update
- From: Keith Reedy <keithreedy@xxxxxxxxxxxx>
- To: spotters-illianaskywarn@xxxxxxxxxxxxx
- Date: Sun, 7 Aug 2011 13:46:44 -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 7, 2011 12:23:07 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 1880
> 08/07/2011 12:15 PM EDT
>
> MD 1880 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR ECNTRL
> IL...CNTRL/NRN IND...WRN OH
>
>
> MESOSCALE DISCUSSION 1880
> NWS STORM PREDICTION CENTER NORMAN OK
> 1114 AM CDT SUN AUG 07 2011
>
> AREAS AFFECTED...ECNTRL IL...CNTRL/NRN IND...WRN OH
>
> CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
>
> VALID 071614Z - 071815Z
>
> THUNDERSTORMS ARE EXPECTED TO CONTINUE TO INTENSIFY ALONG SURFACE
> BOUNDARY EXTENDING FROM NORTHERN IND INTO EASTERN IL. THIS REGION
> MAY REQUIRE A WW IN THE NEXT COUPLE OF HOURS. PROBABILITY OF A
> WATCH BEFORE 20Z IS 50 PERCENT.
>
> A FEW STRONG THUNDERSTORMS HAVE DEVELOPED ALONG THE BOUNDARY OVER
> EXTREME SOUTHWEST LOWER MI INTO NORTHERN IND. THIS AREA IS AHEAD OF
> A SHORTWAVE TROUGH EVIDENT IN SATELLITE IMAGERY OVER WI/IL...AND
> WHERE STRONG HEATING IS NOW OCCURRING. DEWPOINTS IN THE 70S AND
> TEMPERATURES RISING THROUGH THE 80S WILL RESULT IN MLCAPE VALUES OF
> 2000-3000 J/KG. RATHER STRONG WESTERLY FLOW ALOFT AND EFFECTIVE
> SHEAR VALUES OF 35-45 KNOTS WILL PROMOTE SUPERCELL/BOWING STRUCTURES
> CAPABLE OF LOCALLY DAMAGING WINDS. BASED ON RECENT VISIBLE
> SATELLITE TRENDS OF THE CU FIELD ALONG AND EAST OF THE BOUNDARY...A
> WATCH MAY NEED TO BE ISSUED OVER THIS REGION IN THE NEXT 1-2 HOURS.
>
> ..HART.. 08/07/2011
>
> ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...CLE...ILN...DTX...IWX...IND...LOT...ILX...LSX...
>
> LAT...LON 39868897 41078706 41998593 42058422 40478357 39788350
> 39338488 38918766 39138919 39868897
>
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