>Days 4-8 outlooks

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ZCZC SPCSWOD48 ALL
ACUS48 KWNS 080851
SPC AC 080851

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0351 AM CDT SAT MAY 08 2010

VALID 111200Z – 161200Z

…DISCUSSION…
THE MEDIUM RANGE IS EXPECTED TO BE ACTIVE WITH TSTM EPISODES FROM
THE CNTRL/SRN PLAINS TO THE MIDWEST. MID-LVL WAVE THAT WILL BE
IMPETUS FOR A POTENTIALLY ACTIVE MONDAY IS EXPECTED TO DEAMPLIFY AND
MOVE ACROSS THE GRTLKS REGION ON TUESDAY. NEXT UPR TROUGH WILL
SETTLE INTO THE GRT BASIN EARLY NEXT WEEK IN ITS WAKE…THEN EJECT
ENE IN PIECES TOWARD THE MIDWEST. TIMING THESE SHORTWAVE TROUGHS
WILL BE CHALLENGING AND MEDIUM RANGE GUIDANCE EVEN VARIES ON THE
EVENTUAL EJECTION OF THE PARENT WAVE TOWARD THE PLAINS LATER IN THE
WEEK. PASSAGE OF EACH IMPULSE WILL INDUCE TSTM CLUSTERS THAT WILL
PROBABLY HAVE AN ATTENDANT SVR AND HVY RNFL THREAT. BUT…IN
ADDITION TO TIMING UNCERTAINTY…THERE WILL ALSO BE LOW
PREDICTABILITY ASSOCD WITH THE LATITUDINAL PLACEMENT OF THE
BAROCLINIC ZONE WHICH WILL BE HIGHLY INFLUENCED BY TSTM CLUSTERS.

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