Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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000
FXUS63 KOAX 022354
AFDOAX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
654 PM CDT TUE SEP 2 2014

.SHORT TERM...(TONIGHT THROUGH FRIDAY)
ISSUED AT 230 PM CDT TUE SEP 2 2014

HIGH PRESSURE WAS LOCATED OVER THE LOWER MISSOURI VALLEY AT 19Z
WITH SOME RETURN FLOW ALREADY SPREADING INTO THE WESTERN HALF OF
NEBRASKA. SOUTHERLY FLOW WILL DEVELOP ACROSS THE REGION TONIGHT AS
THE HIGH CONTINUES TO MOVE TO THE SOUTHEAST. MODELS SUGGEST SOME
CHANCE OF ELEVATED CONVECTION LATE TONIGHT INTO WEDNESDAY AS A
COMBINATION OF WARM ADVECTION AND MOISTURE ADVECTION OVERSPREADS
THE AREA. POPS HAVE BEEN KEPT ON THE LOW END AS BETTER INSTABILITY
LAGS THE FORCING WITH BEST POCKETS LOCATED IN THE FAR SOUTH AND
NORTH OF THE CWA WEDNESDAY MORNING...WHICH THEN SPREAD EAST OF THE
AREA WEDNESDAY AFTERNOON.

THE NEXT COLD FRONT ALSO APPROACHES THE AREA WEDNESDAY NIGHT WITH
MODELS SIMILAR IN MOVING THE FRONT TO SOUTHEAST NEBRASKA AND
SOUTHWEST IOWA BY THURSDAY EVENING THEN DRIFTS SLOWLY SOUTH INTO
KANSAS AND MISSOURI THURSDAY NIGHT AND FRIDAY. HIGHER POPS FOR THE
AREA WITH THIS FEATURE WITH SOUTH HALF LOOKING TO HAVE THE BEST
CHANCE FOR MORE PROLONGED PERIOD OF SHOWERS AND THUNDERSTORMS.

TEMPERATURES EXPECTED TO CLIMB INTO THE LOWER 90S IN SOUTHERN
PARTS OF THE AREA BOTH WEDNESDAY AND THURSDAY IN ADVANCE OF THE
FRONT. COOLER AIR WILL SPREAD INTO THE NORTH BEHIND THE FRONT ON
THURSDAY THEN SPREAD SOUTH ACROSS THE AREA FRIDAY.

.LONG TERM...(FRIDAY NIGHT THROUGH TUESDAY)
ISSUED AT 230 PM CDT TUE SEP 2 2014

COOLER AIR WILL BE OVER THE AREA DURING THE WEEKEND AT THE
BEGINNING OF THE EXTENDED PERIOD. TREND WILL BE TOWARD WARMER
TEMPERATURES AND ANOTHER CHANCE OF RAIN EARLY NEXT WEEK HOWEVER AS
RETURN FLOW DEVELOPS ON BACK SIDE OF DEPARTING HIGH PRESSURE AND
NEXT COLD FRONT APPROACHES FROM THE NORTHERN ROCKIES.

&&

.AVIATION...(00Z TAFS FOR KOFK...KLNK AND KOMA.)
ISSUED AT 637 PM CDT TUE SEP 2 2014

AVIATION CONCERNS TONIGHT WILL BE THE RETURN OF LOW LEVEL MOISTURE
AND STRATUS AND FOG DEVELOPMENT. IN ADDITION...THE MAIN AREA OF
STORMS SHOULD BE EITHER NORTH OF SOUTH OF THE TAF SITES...HOWEVER
ISOLATED THUNDERSTORMS MAY DEVELOP GIVEN THE ELEVATED INSTABILITY.
FOR NOW...WILL TREND TOWARD INCREASING MID CLOUDS...THEN
STRATUS/FOG DEVELOPMENT AFTER 09Z AND LASTING THRU AROUND 15-17Z.
WILL MENTION MVFR/IFR CONDITIONS. AT THIS TIME TSRA PROBABILITY
TOO LOW TO MENTION AT THE TAF SITES. VARIABLE WINDS WILL BECOME
SOUTHEAST OVERNIGHT 6-12KTS...THEN INCREASE FROM THE SOUTH AT
12-16KTS WITH GUSTS 20-25KTS AFTER 16Z.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&

$$

SHORT TERM...FOBERT
LONG TERM...FOBERT
AVIATION...ZAPOTOCNY



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