DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 110828
SWOD48
SPC AC 110828

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0328 AM CDT TUE SEP 11 2012

VALID 141200Z - 191200Z

...DISCUSSION...
DAYS 4-6 /FRIDAY-SUNDAY/...MODEL CONSENSUS IS THAT A COMPACT
SHORTWAVE TROUGH WILL MOVE FROM THE UPPER MS VALLEY FRIDAY TO THE
NERN U.S. BY 12Z MONDAY. THIS VORT MAX WILL EVENTUALLY INTERCEPT A
COLD FRONT OVER THE OH VALLEY REGION BEFORE CONTINUING INTO THE NERN
STATES SUNDAY. LIMITED MOISTURE RETURN THROUGH NRN EXTENSION OF
PRE-FRONTAL WARM SECTOR SHOULD MAINTAIN LOW PROSPECTS FOR SEVERE
WEATHER.

BEYOND DAY 6 SOLUTIONS BEGIN TO DIVERGE AND OVERALL PREDICTABILITY
IS LOW...BUT GENERAL CONSENSUS IS THAT AN UPPER TROUGH WILL BEGIN TO
AMPLIFY OVER THE NRN PLAINS AND UPPER MS VALLEY REGION DAY 7...WHILE
A WEAKER SRN STREAM IMPULSE EJECTS INTO THE SERN STATES.

..DIAL.. 09/11/2012

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