[spotters-illianaskywarn] Fwd: NOAA's National Weather Service SPC Mesoscale Discussion Update
- From: Keith Reedy <keithreedy@xxxxxxxxxxxx>
- To: "spotters-illianaskywarn@xxxxxxxxxxxxx" <spotters-illianaskywarn@xxxxxxxxxxxxx>
- Date: Tue, 4 Sep 2012 15:07:30 -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: September 4, 2012 2:41:47 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 1879
> 09/04/2012 02:34 PM EDT
>
> MD 1879 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR CNTRL AND WRN
> WI...NERN IA...SERN MN
>
>
> MESOSCALE DISCUSSION 1879
> NWS STORM PREDICTION CENTER NORMAN OK
> 0133 PM CDT TUE SEP 04 2012
>
> AREAS AFFECTED...CNTRL AND WRN WI...NERN IA...SERN MN
>
> CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
>
> VALID 041833Z - 042030Z
>
> PROBABILITY OF WATCH ISSUANCE...80 PERCENT
>
> SUMMARY...STORMS ARE EXPECTED TO DEVELOP PRIOR BY 20-21Z WITH VERY
> LARGE HAIL AND DAMAGING WINDS.
>
> DISCUSSION...A COLD FRONT CONTINUES TO PROGRESS EWD TOWARD THE MS
> RIVER AND TRAILING SWWD INTO NWRN IA. STRONG HEATING PERSISTS AND CU
> FIELDS ARE BEGINNING TO FORM. MODIFIED SOUNDINGS SUGGEST
> TEMPERATURES IN THE MOD TO UPPER 80S F WILL ERODE ALL CIN...AND SFC
> CONVERGENCE SHOULD BE ENOUGH TO INITIATE STORMS ALONG THE FRONT.
> LAPSE RATES ALOFT ARE QUITE STEEP...AND WILL SUPPORT RAPID STORM
> DEVELOPMENT. WHILE LOW LEVEL FLOW IS WEAK...MID TO UPPER LEVEL FLOW
> IS SUBSTANTIAL AND SHOULD SUPPORT LONG LIVED SEVERE STORMS INCLUDING
> SUPERCELLS. AS SUCH...VERY LARGE HAIL WILL BE POSSIBLE. DAMAGING
> WINDS WILL ALSO BE A THREAT AS STORMS PRODUCE SIGNIFICANT COLD
> DOWNDRAFTS AND BEGIN TO EXPAND AND FORWARD PROPAGATE LATER TODAY.
>
> ..JEWELL/CORFIDI.. 09/04/2012
>
> ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...MQT...GRB...MKX...DVN...DLH...ARX...MPX...DMX...
>
> LAT...LON 44678941 43668944 42698981 42459130 42739231 43699281
> 45009283 46029275 46549270 46879217 47049079 46868993
> 46358961 44678941
>
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