Severe Storm Outlook Narrative (AC)
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ACUS03 KWNS 050744
SWODY3
SPC AC 050743

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0143 AM CST MON DEC 05 2016

VALID 071200Z - 081200Z

...NO TSTM AREAS FORECAST...

...SUMMARY...
NO SIGNIFICANT THUNDERSTORM ACTIVITY IS EXPECTED OVER THE
CONTINENTAL U.S. ON WEDNESDAY.

...DISCUSSION...

A LOW-AMPLITUDE SHORTWAVE TROUGH EMBEDDED WITHIN A BROAD SYNOPTIC
TROUGH WILL MOVE FROM THE CENTRAL ROCKIES EARLY WEDNESDAY TO THE
OHIO VALLEY BY 12Z THURSDAY. AT THE SURFACE A LARGE ARCTIC HIGH
PRESSURE AREA WILL ADVANCE RAPIDLY SOUTHWARD THROUGH THE PLAINS.
CYCLOLYSIS WILL OCCUR OVER THE CENTRAL HIGH PLAINS AS THE AREA OF
HIGH PRESSURE BUILDS SWD AND THE PRIMARY ZONE OF FORCING ALOFT MOVES
EAST OF THE HIGHER TERRAIN. THE DECAY OF THE LEE CYCLONE WILL LIMIT
MOISTURE RETURN THROUGH PRE-FRONTAL WARM SECTOR. WHILE SHALLOW...
ELEVATED CONVECTION MAY DEVELOP WITHIN SWD-ADVANCING FRONTAL ZONE
FROM THE LOWER MISSISSIPPI VALLEY THROUGH SOUTHEAST TEXAS...THE
UNSTABLE LAYER WILL NOT LIKELY BECOME DEEP ENOUGH TO SUPPORT
THUNDERSTORMS.

..DIAL.. 12/05/2016

$$


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