[spotters-illianaskywarn] Fwd: NOAA's National Weather Service SPC Mesoscale Discussion Update
- From: Keith Reedy <keithreedy@xxxxxxxxxxxx>
- To: spotters-illianaskywarn@xxxxxxxxxxxxx
- Date: Mon, 23 May 2011 14:22:47 -0400
Keith Reedy
keithreedy@xxxxxxxxxxxx
Begin forwarded message:
> From: National Weather Service <nws.noaa@xxxxxxxxxxxxxxxxxxxxxxx>
> Date: May 23, 2011 1:51:20 PM 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 893
>
> 05/23/2011 01:38 PM EDT
>
> MD 0893 CONCERNING SEVERE THUNDERSTORM WATCH 340... FOR E-CNTRL
> MO...CNTRL/SRN IL/IND
>
>
>
> MESOSCALE DISCUSSION 0893
> NWS STORM PREDICTION CENTER NORMAN OK
> 1237 PM CDT MON MAY 23 2011
>
> AREAS AFFECTED...E-CNTRL MO...CNTRL/SRN IL/IND
>
> CONCERNING...SEVERE THUNDERSTORM WATCH 340...
>
> VALID 231737Z - 231900Z
>
> THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 340
> CONTINUES.
>
> FAST-MOVING BOWING LINE WILL LIKELY PRODUCE A SWATH OF DAMAGING
> WINDS EAST OF THE SAINT LOUIS METRO AREA IN PARTS OF SRN IL THROUGH
> 19Z. THIS SEGMENT MAY REACH THE ERN PORTIONS OF WW 340 BY 19Z...WITH
> THE PROBABILITY OF A DOWNSTREAM WW ISSUANCE AT 80 PERCENT.
>
> AS OF 1730Z...BOWING LINE SEGMENT WITH A MEAN FORWARD PROPAGATION
> SPEED OF 50-55 KT HAD REACH THE SAINT LOUIS METRO AREA WITH A 54 KT
> GUST MEASURED AT KSTL. ENVIRONMENT WILL REMAIN SUPPORTIVE OF
> MAINTAINING THIS FEATURE EWD ACROSS SRN IL. STRONG NEARLY
> UNIDIRECTIONAL LOW/MID-LEVEL WLYS /AS SAMPLED BY WINCHESTER IL
> PROFILER/ WILL REMAIN IN PLACE...IN CONJUNCTION WITH HEATING AND
> INCREASINGLY RICH MOISTURE RETURN NOTED IN RECENT SURFACE
> OBSERVATIONS.
>
> ADDITIONAL TSTM DEVELOPMENT MAY ALSO OCCUR ALONG THE LEADING EDGE OF
> THE RICHER MOISTURE ACROSS CNTRL IL/IND WHERE CU FIELD HAS INCREASED
> PER VISIBLE SATELLITE IMAGERY. THE COMBINATION OF THE BOWING LINE
> AND/OR ADDITIONAL TSTM INITIATION WILL NECESSITATE A DOWNSTREAM
> SEVERE TSTM WATCH ISSUANCE BY 19Z.
>
> ..GRAMS.. 05/23/2011
>
> ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...LMK...IND...PAH...ILX...LSX...
>
> LAT...LON 37959032 38969029 39569035 39998958 40028817 39868741
> 39138686 38838688 38538702 37898738 37668871 37959032
>
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