[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: Sun, 24 Mar 2013 20:13:18 -0400
Keith Reedy
keithreedy@xxxxxxxxxxxx
Begin forwarded message:
> From: "GovDelivery Weather Updates" <weatherupdates@xxxxxxxxxxxxxxxxxxxxxx>
> Subject: NOAA's National Weather Service SPC Mesoscale Discussion Update
> Date: March 24, 2013 7:21:21 PM EDT
> To: keithreedy@xxxxxxxxxxxx
> Reply-To: weatherupdates@xxxxxxxxxxxxxxxxxxxxxx
>
>
>
> You are subscribed to SPC Mesoscale Discussion for NOAA's National Weather
> Service.
> GovDelivery provides this service using unaltered NOAA/NWS products.
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>
> SPC MD 328
> 03/24/2013 07:14 PM EDT
>
> MD 0328 CONCERNING HEAVY SNOW FOR CNTRL IND...MUCH OF CNTRL/SRN OH...PORTIONS
> OF CNTRL/NRN WV...EXTREME W-CNTRL VA
>
>
> MESOSCALE DISCUSSION 0328
> NWS STORM PREDICTION CENTER NORMAN OK
> 0613 PM CDT SUN MAR 24 2013
>
> AREAS AFFECTED...CNTRL IND...MUCH OF CNTRL/SRN OH...PORTIONS OF
> CNTRL/NRN WV...EXTREME W-CNTRL VA
>
> CONCERNING...HEAVY SNOW
>
> VALID 242313Z - 250515Z
>
> SUMMARY...HEAVY SNOW WILL SPREAD EWD FROM CENTRAL IND INTO W-CENTRAL
> OHIO BY 03Z. COVERAGE OF HEAVY SNOW WILL CONTINUE TO EXPAND EWD
> ACROSS CENTRAL AND SW OHIO INTO CENTRAL AND NRN WV AND FAR W-CENTRAL
> VA BY 03Z-06Z. WIDESPREAD 1 INCH PER HOURS RATES ARE EXPECTED. SOME
> THUNDER AND LOCALLY 2 INCH PER HOUR RATES ARE POSSIBLE FOR BRIEF
> PERIODS IN CONVECTIVELY ENHANCED BANDS.
>
> DISCUSSION...A SFC LOW LOCATED OVER ERN KY AT 23Z IS FORECAST TO
> TRACK N/NE ACROSS THE OHIO RIVER INTO S/SERN OHIO BY AROUND 04Z AS A
> MID LEVEL TROUGH SURGES EWD THROUGH THE OHIO VALLEY. HEAVY SNOW
> CURRENTLY FALLING ACROSS CNTRL IL INTO WRN/CNTRL IND WILL SHIFT EWD
> IN CONJUNCTION WITH AFOREMENTIONED LOW. STRONG DEEP LAYER ASCENT
> AHEAD OF THE LOW IN CONJUNCTION WITH MODEST LOW LEVEL FRONTOGENESIS
> WILL HELP MAINTAIN PRECIPITATION RATES NEAR 1 INCH PER HOUR ACROSS
> IND INTO W-CNTRL OH THROUGH AT LEAST 03Z...SPREADING ACROSS OHIO
> INTO WV THROUGH 06Z. SOME WEAK ELEVATED INSTABILITY THROUGH THE
> DENDRITIC GROWTH ZONE MAY LEAD TO CONVECTIVELY ENHANCED BANDS...WITH
> LOCALLY 2 INCH PER HOUR RATES POSSIBLE FOR BRIEF PERIODS ROUGHLY
> ALONG/NEAR THE I-70 CORRIDOR IN OHIO AND SEWD INTO CNTRL/NRN WV
> AFTER 00Z. A STRIKE OR TWO OF LIGHTNING MAY OCCUR IN THESE HEAVIER
> BANDS. SFC TEMPERATURES ACROSS OHIO AND WV AT 23Z WERE ABOVE
> FREEZING /33-36 DEGREES F/ AS OF 2230Z. WHILE PRECIPITATION MAY
> BEGIN AS RAIN OR EVEN SPOTTY FREEZING RAIN...WET BULB PROCESSES WILL
> ALLOW SFC TEMPERATURES TO QUICKLY COOL TO NEAR/BELOW FREEZING AND A
> CHANGE TO SNOW SHOULD OCCUR QUICKLY.
>
> ..LEITMAN.. 03/24/2013
>
> ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...CTP...LWX...RNK...PBZ...RLX...CLE...ILN...IWX...
> IND...
>
> LAT...LON 40758679 41088549 40958391 40288067 39677927 39127885
> 38457902 37897952 37688013 38058111 38858258 39288467
> 39758647 40068688 40758679
>
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