DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 181506
SWODY1
SPC AC 181503

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0903 AM CST FRI JAN 18 2013

VALID 181630Z - 191200Z

...NO TSTM AREAS FORECAST...

...SYNOPSIS/FORECAST...
LOW AMPLITUDE CYCLONIC FLOW WILL PREVAIL ACROSS THE LWR 48 THROUGH
SAT...WITH THE MAIN BELT OF THE WLYS EXTENDING FROM THE CANADIAN
RCKYS ACROSS THE UPR MS VLY INTO THE NERN STATES. A WEAKER BRANCH OF
FLOW WILL EXTEND FROM THE SRN RCKYS TO THE S ATLANTIC CST.

A SUBSTANTIAL SHORTWAVE IMPULSE...NOW OVER NRN BC...WILL APPROACH
THE NRN PLNS LATE IN THE PERIOD AND WILL SUPPORT DEEPENING OF A SFC
CYCLONE OVER NRN ND/NRN MN AT THAT TIME. IN CONJUNCTION WITH THIS
PATTERN...A PLUME OF STEEP MID LVL LAPSE RATES WILL SWEEP ESE ACROSS
THE NRN PLNS/UPR MS VLY. MOISTURE...NEVERTHELESS...WILL REMAIN TOO
SCANT TO SUPPORT TSTM DEVELOPMENT WITHIN THIS PLUME AND ITS
ASSOCIATED WAA REGIME.

..CORFIDI/DARROW.. 01/18/2013

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