ISSUED BY AFWA AT OFFUTT AFB NE...FOR SPC BACKUP
DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
VALID 142000Z - 151200Z
THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
15 WSW YUM 10 NNW BLH 30 S IGM 10 SW FLG 10 SSW SOW 35 E SAD
40 E DUG.
GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 SW IPL 30 NW IPL
45 WSW LAS 30 NW ENV 55 ENE SUN 10 ESE BZN 40 WSW 4BQ 35 NNE DGW
35 NE CYS 30 SW LIC 35 NW GCK 50 N RSL 25 SW OTM 25 S MKE
...CONT... 45 NNW YNG 40 NE ORF.
...S CNTRL AZ...
LOW TO MID LEVEL MOIST AXIS EXISTS FROM SRN AZ INTO SRN UT. AS
MORNING CONVECTIVE DEBRIS HAS DIMISHED ACROSS THE REGION...SFC
HEATING COUPLED WITH DEWPOINTS IN THE UPPER 60S F HAS RESULTED IN
INCREASINGLY UNSTABLE AIRMASS AND WEAKENING CAP. CONVECTION NOW
DRIFTING SW OFF THE MOUNTAINS OF WRN NM APPEARS AIDED BY STRONG
DIVERGENCE ON THE NOSE OF UPPER LEVEL NELY JET MAX AND THIS SHOULD
RESULT IN ADDITIONAL CONVECTIVE DEVELOPMENT OVER THE NEXT SEVERAL
HOURS. DEEP LAYER SHEAR WILL BECOME INCREASINGLY FAVORABLE FOR
ORGANIZED STORMS/SUPERCELLS WITH ATTENDANT WIND DAMAGE AND HAIL
THREAT. MEAN NELY FLOW...AND INCREASING INSTABILITY ACROSS THE SRN
DESERTS COULD SUSTAIN STORMS WELL INTO THE EVENING.
...SRN FL...
TROPICAL WAVE OVR ERN GULF WILL CONTINUE TO MOVE WWD INTO THE OPEN
GULF. TSTMS OVR CNTRL AND SWRN FL WERE DECREASING AS TROPICAL WAVE
MOVES WEST. HOWEVER...MODERATE INSTABILITY AND LOW LEVEL
CONVERGENCE REMAIN OVER MUCH OF SRN AND CNTRL FL AND INCREASING
SURFACE HEATING MAY LEAD TO RENEWED FEEDER-BAND CONVECTION. GIVEN
STRONG SELY LOW LEVEL FLOW ON THE ORDER OF 25-30KT...SUFFICIENT
SPEED SHEAR MAY EXIST FOR A BREIF/ISOLD TORNADO OVER THE NEXT FEW
HOURS.
..AFWA.. 08/14/03
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0100Z
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