[spotters-illianaskywarn] Fwd: NOAA's National Weather Service SPC Mesoscale Discussion Update
- From: Keith Reedy <keithreedy@xxxxxxxxxxxx>
- To: spotters-illianaskywarn@xxxxxxxxxxxxx
- Date: Tue, 10 May 2011 11:58:14 -0400
Keith Reedy
keithreedy@xxxxxxxxxxxx
Begin forwarded message:
> From: National Weather Service <nws.noaa@xxxxxxxxxxxxxxxxxxxxxxx>
> Date: May 10, 2011 11:28:46 AM EDT
> To: keithreedy@xxxxxxxxxxxx
> Subject: NOAA's National Weather Service SPC Mesoscale Discussion Update
> Reply-To: National Weather Service <nws.noaa@xxxxxxxxxxxxxxxxxxxxxxx>
>
> You are subscribed to SPC Mesoscale Discussion for NOAA's National Weather
> Service.
>
>
>
> SPC MD 709
>
> 05/10/2011 11:22 AM EDT
>
> MD 0709 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR SRN IND...SRN OH...ERN
> KY...SRN WV...WRN VA...NERN TN AND EXTREME NWRN NC
>
>
>
> MESOSCALE DISCUSSION 0709
> NWS STORM PREDICTION CENTER NORMAN OK
> 1021 AM CDT TUE MAY 10 2011
>
> AREAS AFFECTED...SRN IND...SRN OH...ERN KY...SRN WV...WRN VA...NERN
> TN AND EXTREME NWRN NC
>
> CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
>
> VALID 101521Z - 101715Z
>
> SURFACE BASED THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER A PORTION
> OF THE OH VALLEY INTO THE SRN APPALACHIANS BY 17Z. SUPERCELLS AND
> STORM CLUSTERS WITH LARGE HAIL AND DAMAGING WIND ARE EXPECTED TO BE
> THE PRIMARY THREATS. WW WILL LIKELY BE NEEDED WITHIN THE NEXT COUPLE
> OF HOURS.
>
> LATE THIS MORNING A WARM FRONT EXTENDS FROM SRN SC NWWD THROUGH ERN
> KY...EXTREME SWRN OH INTO CNTRL IND. WARM SECTOR SOUTH AND WEST OF
> THIS BOUNDARY IS ALREADY MODERATELY UNSTABLE WHERE STEEP MID-LEVEL
> LAPSE RATES HAVE OVERSPREAD MID-UPPER 60S DEWPOINTS. STRONG DIABATIC
> WARMING WILL FURTHER DESTABILIZE THE BOUNDARY LAYER WITH MLCAPE IN
> EXCESS OF 3000 J/KG THIS AFTERNOON. THE PRESENCE OF EML PLUME
> BENEATH UPPER RIDGE AXIS SUGGEST MUCH OF THE WARM SECTOR WILL REMAIN
> CAPPED TO SURFACE BASED CONVECTION. STORMS SHOULD DEVELOP AS SURFACE
> LAYER DESTABILIZES...MAINLY ALONG ERN FRINGE OF CAPPING EML PLUME IN
> VICINITY OF NW-SE ORIENTED FRONT AS WELL AS OVER THE HIGHER TERRAIN
> OF THE SRN APPALACHIANS. LOW LEVEL WINDS/HODOGRAPHS WILL REMAIN
> WEAK/SMALL...BUT VEERING AND STRENGTHENING WIND PROFILES WITH HEIGHT
> WILL SUPPORT ORGANIZED STORMS INCLUDING SUPERCELLS.
>
> ..DIAL.. 05/10/2011
>
> ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...RNK...RLX...GSP...MRX...JKL...ILN...LMK...IND...
>
> LAT...LON 40218395 38868225 36368104 35568214 37208396 38918632
> 40108565 40218395
>
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