288 
FXUS64 KTSA 031054
AFDTSA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
554 AM CDT FRI SEP 3 2010

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KMLC/KXNA/KFYV/KFSM.

SKIES WILL CLEAR THRU THE DAY AS SFC HIGH PUSHES INTO THE AREA.
VFR CONDITIONS SHOULD PREVAIL THRU THE PERIOD. LATER SHIFTS MAY
HAVE TO MONITOR FOG POTENTIAL FOR TMRW MORNING AT ALL SITES
EXCEPT MLC /WHICH DID NOT RECEIVE RAIN LAST NIGHT/. CURRENT
THINKING IS THAT ANY WOULD BE PATCHY SO WILL NOT INCLUDE IN THE
TAF ATTM. GUIDANCE NOT INDICATING ANY VSBY RESTRICTIONS. NORTH
WINDS WILL PREVAIL THRU THE FIRST HALF OF THE PERIOD...WITH LIGHT
WINDS EXPECTED TONIGHT.

&&

.PREV DISCUSSION... /ISSUED 350 AM CDT FRI SEP 3 2010/ 

DISCUSSION...
COLD FRONT CURRENTLY MOVING THROUGH FAR SOUTHEAST OKLAHOMA EARLY
THIS MORNING WITH MAIN PRECIPITATION PUSHING SOUTHEAST OF AREA.
BEHIND FRONT...SURFACE HIGH PRESSURE WILL BUILD DIRECTLY OVER
NORTHEAST OKLAHOMA THIS AFTERNOON WITH PLEASANT WEATHER...UNDER
MOSTLY SUNNY SKIES AND DRY/MILD CONDITIONS. GOOD RADIATIONAL
COOLING EXPECTED TONIGHT WITH A COLD START SATURDAY MORNING AS
TEMPERATURES DROP INTO THE UPPER 40S ACROSS FAR NORTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS.

HIGH PRESSURE WILL BEGIN TO SHIFT EAST SATURDAY INTO SUNDAY WITH
A SLOW WARMING TREND. LOW RH VALUES AND INCREASING SOUTH WINDS 
COULD LEAD TO AN INCREASED FIRE DANGER SUNDAY INTO MONDAY. DEEPER
GULF MOISTURE WILL LIFT BACK NORTH INTO THE REGION BY TUESDAY WITH
SCATTERED SHOWERS/THUNDERSTORMS POSSIBLE AND MORE HUMID CONDITIONS
THROUGH MID TO LATE WEEK. JUST BEYOND THE EXTENDED PERIODS GFS
TRIES WILL PUSH ANOTHER COLD FRONT INTO THE AREA WITH INCREASING
CHANCES FOR PRECIPITATION...HOWEVER ECMWF IS NOT AS AGGRESSIVE
WITH FRONT...STALLING BOUNDARY JUST NORTH OF AREA.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.
&&

$$

AVIATION...22