FXUS63 KOAX 270815
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
315 AM CDT MON SEP 27 2010
.DISCUSSION...
CLOSED LOW NEAR THE AR/TN BORDER CONTINUED TO MOVE SWD. SHORTWAVE
RIDGING WAS IN PLACE OVER OUR AREA...BUT A FAST MOVING SHORTWAVE
TROUGH WAS MOVING EWD ACROSS SRN CANADA. 500 MB CHART FROM 00Z
LAST EVENING SHOWED 12 HR HEIGHT FALLS UP TO 90 METERS WITH THAT
SYSTEM. THIS WILL HELP A COLD FRONT PUSH EWD ACROSS THE NRN AND
CNTRL PLAINS TODAY. SOUTHERLY WINDS WILL OCCUR AHEAD OF THE
FRONT...ALLOWING SOME WARMER AIR TO MOVE INTO OUR AREA. MODELS
SHOW 850 MB TEMPS RISING ABOUT 4-8 DEGREES COMPARED TO YESTERDAY.
HIGHS IN OUR AREA YESTERDAY WERE IN THE MID 60S TO LOWER 70S.
TODAY...WE SHOULD SEE HIGHS IN THE 70S (WARMEST NORTHWEST AND
COOLEST SOUTHEAST). THIS IS IN LINE WITH BOTH NAM AND GFS MOS
GUIDANCE.
NORTH WINDS WILL SPREAD ACROSS ALL OF THE FORECAST AREA BY 06Z
TUESDAY. EXPECT LOW TONIGHT IN THE MID OR UPPER 40S NORTH AND
NEAR 50 SOUTH. SOME PATCHY LOW CLOUDS POSSIBLE...BUT WILL NOT GO
MORE THAN PARTLY CLOUDY IN GRIDS FOR NOW.
TEMPERATURES SHOULD REMAIN THE ONLY REAL FORECAST ISSUE THE NEXT
SEVERAL DAYS...WITH NO PCPN EXPECTED. LARGE SCALE 500 MB PATTERN
SHOULD BE FOR A RIDGE OVER THE WRN U.S. AND A TROUGH IN THE EAST
MUCH OF THE WEEK. THIS PUTS OUR AREA IN NORTHWEST FLOW. ANOTHER
COLD FRONT SHOULD PUSH ACROSS THE AREA WEDNESDAY...BUT IT APPEARS
THAT WILL BE DRY WITH PRECIPITABLE WATER VALUES MAINLY BELOW 0.75
INCHES. FAIRLY DRY AIRMASS WILL REMAIN IN PLACE THE REST OF THE
WEEK.
&&
.AVIATION...
TAF SITES KOFK/KOMA/KLNK
06Z TAFS
VFR CONDITIONS WILL PREVAIL THRU THE FCST PD.
&&
.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&
$$
DISCUSSION...MILLER
AVIATION...DEE