FXUS63 KOAX 182012
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
312 PM CDT MON OCT 18 2010
.SHORT TERM...TONIGHT THROUGH THURSDAY.
EASTERN NEBRASKA AND WESTERN IOWA WILL REMAIN UNDER THE INFLUENCE OF
NORTHWEST FLOW ALOFT THROUGH THURSDAY. THIS WILL KEEP DRY AND MILD
WEATHER IN THE FORECAST UNTIL AN UPPER LOW BEGINS TO INVADE THE AREA
FROM THE SOUTHWEST IN THE LONGER TERM PERIOD AS OUTLINED BELOW.
FRONTAL BOUNDARY ACROSS KANSAS AND MISSOURI SHOULD KEEP ANY
PRECIPITATION CONFINED TO SOUTH OF OUR AREA TONIGHT...THOUGH A
SPRINKLE OR TWO MAY LINGER INTO THE EVENING IN SOUTHEAST NEBRASKA.
WEAK LOW LEVEL NORTHEAST FLOW ACROSS OUR CWA WILL TURN TO THE WEST
LATER TONIGHT AS HIGH PRESSURE NORTH OF AFOREMENTIONED FRONT
SLIDES TO OUR SOUTH. WEAK WARM ADVECTION MAY INDUCE SCATTERED MID
LEVEL CLOUDS...BUT PLENTY OF SUNSHINE SHOULD HELP PUSH TEMPS BACK
INTO THE UPPER 60S MOST AREAS. INFLUENCE OF WESTERLY COMPONENT TO
LOW LEVEL WINDS CONTINUES INTO WEDNESDAY...SO WILL HAVE HIGHS A
FEW DEGREES HIGHER THAN TUESDAY.
A SHORT WAVE TROUGH IS ADVERTISED BY BOTH NAM AND GFS TO RACE
SOUTHEAST INTO THE GREAT LAKES LATE WEDNESDAY...WITH A COLD FRONT
SPILLING SOUTH INTO THE PLAINS IN ITS WAKE WEDNESDAY NIGHT. WEAK
NORTHEAST FLOW ON THURSDAY WILL PROVIDE SLIGHTLY COOLER TEMPERATURES
THEN...BUT HIGHS IN THE MID TO UPPER 60S IS STILL AT LEAST 5 DEGREES
ABOVE NORMAL.
DERGAN
.LONG TERM...THURSDAY NIGHT THROUGH MONDAY.
UPPER LOW SPINNING THROUGH THE 4 CORNERS REGION WILL BRING A
CHANCE OF SHOWERS TO THE AREA THROUGH THE FIRST HALF OF THE
WEEKEND AS UPPER DIFFLUENT FLOW AND PACIFIC MOISTURE MOVE INTO THE
REGION. THIS COULD SPREAD SOME RAIN INTO SOUTHERN HALF OF THE AREA
FRIDAY...BUT MORESO SATURDAY AS UPPER LOW MOVES INTO THE MID
MISSOURI RIVER VALLEY. THE FIRST TROUGH IS FORECAST TO MOVE
EASTWARD INTO THE MISSISSIPPI RIVER AND LOWER GREAT LAKES SATURDAY
NIGHT. SUBSIDENCE BEHIND THE FIRST WAVE COULD LEAD TO A LULL
SATURDAY NIGHT...WITH PERHAPS SOME LINGERING SHOWERS SOUTH OF I80.
A SECOND UPPER TROUGH IS EXPECTED TO MOVE ACROSS THE AREA ON
SUNDAY WHICH COULD BRING ADDITIONAL ISOLATED SHOWERS THAT LINGER
SUNDAY NIGHT ACROSS MAINLY WESTERN IOWA. MONDAY APPEARS TO BE DRY
WITH LACK OF SIGNIFICANT FORCING IN THE REGION.
DEWALD
&&
.AVIATION...
TAF SITES KOFK/KOMA/KLNK
18Z TAFS
ONLY HIGH LVL CLOUDINESS EXPECTED...VFR COND WILL PREVAIL THRU THE
FCST PD.
DEE
&&
.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&
$$