Begin forwarded message: > From: interwarn@xxxxxxxx > Date: May 1, 2010 10:49:27 PM EDT > To: reedyk@xxxxxx > Subject: Mesoscale Discussion > > > ACUS11 KWNS 020246 > SWOMCD > SPC MCD 020245 > INZ000-KYZ000-ILZ000-TNZ000-MOZ000-020315- > > MESOSCALE DISCUSSION 0455 > NWS STORM PREDICTION CENTER NORMAN OK > 0945 PM CDT SAT MAY 01 2010 > > AREAS AFFECTED...SERN MO/SRN IL/WRN KY/WRN IND > > CONCERNING...SEVERE POTENTIAL...WATCH LIKELY > > VALID 020245Z - 020315Z > > NEW TORNADO WATCH WILL BE COORDINATED SHORTLY WITH AFFECTED WFOS > ACROSS SERN MO...SRN IL INTO FAR WRN KY AND PARTS OF WRN IND. > > MID EVENING SURFACE ANALYSIS SHOWED AN AREA OF LOW PRESSURE OVER > NWRN AR...WITH A BOUNDARY EXTENDING NEWD THROUGH SERN MO TO SWRN IL > /JUST W OF BLV/ AND INTO NWRN IND. AIR MASS OVER SERN MO TO SWRN IL > HAS BEEN SLOWLY DESTABILIZING WITH AN INCREASE IN LOW LEVEL > MOISTURE...BUT WEAKER MID LEVEL LAPSE RATES WITH NWD EXTENT ARE > TENDING TO LIMIT THE DEVELOPMENT OF GREATER INSTABILITY THUS FAR. > > STRENGTHENING SSWLY LLJ INTO THE LOWER OH VALLEY OVERNIGHT WILL > ADVECT HIGHER THETAE AIR MASS INTO THIS REGION AIDING IN FURTHER > DESTABILIZATION. TORNADO THREAT SHOULD INCREASE AS SURFACE LOW > TRACKS NEWD ALONG THE SURFACE BOUNDARY THROUGH SERN MO INTO SRN IL > REACHING ERN IL/WRN IND BY 12Z. > > .PETERS.. 05/02/2010 > > ..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... > > ATTN...WFO...OHX...IND...PAH...ILX...MEG...LSX...SGF... > > LAT...LON 36599143 38649015 39538921 40268757 40068682 38668701 > 37398756 36498818 36599143 > > > > > This weather bulletin was brought to you by InterWARN at www.interwarn.com Illiana Skywarn - Serving the Wabash Valley since 1974 Participate or Listen on: 145.230 (- / no PL) Vigo, Edgar, Clark, Vermillion, Parke, Clay and Sullivan 146.715 (- / no PL) overflow for Vermillion and Parke 444.600 (+ / no PL) UHF link into 145.230/r 146.685 (- / 151.4Hz) as a backup