SPC MESOSCALE DISCUSSION 1707 FOR PORTIONS OK PANHANDLE AND KS
CONCERNING...HEAVY RAINFALL...SEVERE THUNDERSTORM WATCH 608. ...
VALID 160056Z - 160330Z
EXPECT CONVECTIVE COVERAGE/INTENSITY TO INCREASE FROM SWRN KS ENEWD
INVOF FRONT TO NERN KS THROUGH ABOUT 03Z WITH ISOLATED DAMAGING
WIND AND LARGE HAIL POSSIBLE. THREAT SHOULD DIMINISH CONSIDERABLY
WITH SIGNIFICANT LOSS OF SBCAPE-DRIVING DIURNAL HEATING AFTER ABOUT
04Z.
EXPECT GREATEST CONVECTIVE POTENTIAL AND SEVERE PROBABILITIES TO
REMAIN INVOF FRONT WHERE LOW LEVEL FORCING IS MAXIMIZED.
HENCE...THREAT FOR MUCH OF SERN PORTION OF ORIGINAL WW HAS
DIMINISHED SUCH THAT WW NO LONGER NECESSARY FOR PORTIONS S-CENTRAL
KS AND N-CENTRAL/NWRN OK E OF PANHANDLE. ADDITIONAL TOWERS EVIDENT
VIA VIS IMAGERY -- BENEATH CIRRUS IN OK PANHANDLE. FURTHER
DEVELOPMENT IS POSSIBLE ALL ALONG KS/OK SEGMENT OF FRONT IN
ENVIRONMENT OF 3500-5000 MLCAPE AS DERIVED FROM TOP/DDC RAOBS AND
RUC2 FORECAST SOUNDINGS. WEAK LOW-MID LEVEL WINDS INDICATE
INDIVIDUAL TSTM CLUSTERS WILL BECOME OUTFLOW DOMINANT AND WEAKEN
WITHIN 2-3 HOURS AFTER DARK. MEANWHILE...STORM MOTIONS SHOULD
REMAIN VERY SLOW...WITH POTENTIAL FOR LOCALLY HEAVY RAIN RATES 1.5-
2.5 INCHES/HOUR FROM MOST INTENSE CORES OVER KS. INFLOW MOISTURE
WILL REMAIN ABUNDANT WITH 70S F SURFACE DEW POINTS AND 1.5-2 INCH
PW.
..EDWARDS.. 08/16/02
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