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Displaying AFOS PIL: SWOMCD Product Timestamp: 2003-05-08 06:57 UTC
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863 ACUS11 KWNS 080657 SWOMCD SPC MCD 080657 OKZ000-TXZ000-080900- MESOSCALE DISCUSSION 0839 NWS STORM PREDICTION CENTER NORMAN OK 0157 AM CDT THU MAY 08 2003 AREAS AFFECTED...SRN OK...PORTIONS N-CENTRAL TX CONCERNING...TORNADO WATCH 293... VALID 080657Z - 080900Z PAIR OF POTENTIALLY TORNADIC SUPERCELLS CONTINUES MOVING EWD ACROSS S-CENTRAL OK...EXPECTED TO MOVE ACROSS PORTIONS GARVIN/MURRAY/CARTER COUNTIES THEN HEADED FOR PORTIONS PONTOTOC/JOHNSTON/MARSHALL/BRYAN/COAL COUNTIES NEXT FEW HOURS. ADDITIONAL WW MAY BE REQUIRED ACROSS PORTIONS S-CENTRAL/SERN OK NEAR EXPIRATION TIME OF WW 293 IF CONVECTIVE TRENDS WARRANT. BECAUSE OF THEIR SIZE...PROFUSE PRECIP PRODUCTION AND CLOSE PROXIMITY -- 20-25 NM SEPARATION BETWEEN CIRCULATIONS -- NRN STORM MAY INGEST OUTFLOW OR PRECIP FROM SRN STORM AND WEAKEN...HOWEVER IN INTERIM WILL MAINTAIN THREAT OF DESTRUCTIVE HAIL AND TORNADOES. MUCAPE 2500-4000 J/KG INDICATED IN MODIFIED RUC SOUNDINGS OVER AREA...ALONG WITH 0-3 KM SRH 300-500 J/KG RANGE. LATTER IS CLOSELY CORROBORATED BY OBSERVED FWD VWP HODOGRAPH...WHICH SHOWS 50-60 KT LLJ IMPINGING UPON THIS ACTIVITY. ALTHOUGH LOW LEVEL AIR MASS REMAINS VERY MOIST AND SUPPORTIVE OF SEVERE TSTMS...AND DRYLINE REMAINS W OF REGION...INCREASING CINH OVERNIGHT ACROSS AREA SUGGESTS PROBABILITIES FOR ADDITIONAL DEVELOPMENT ARE DIMINISHING FROM SW-NE. ACCORDINGLY...WW MAY BE CLEARED FROM SW-NE OR W-E AS TRENDS INDICATE LITTLE POTENTIAL FOR STORM GENESIS. ..EDWARDS.. 05/08/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...OUN... 34549998 35379995 34669602 33239604 33419708