303
FXUS63 KOAX 130432
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1132 PM CDT MON OCT 12 2026
KEY MESSAGES
- COOLER AIR CONTINUES TO SETTLE IN FROM THE NORTH. FALL- LIKE
WEATHER RETURNS BY MID- WEEK AND CONTINUES INTO THE WEEKEND.
- THERE IS A LOW CHANCE OF STRONG TO SEVERE THUNDERSTORMS OVER
SOUTHEAST NEBRASKA AND SOUTHWEST IOWA TUESDAY AFTERNOON AND
EVENING. MORE WIDESPREAD SHOWERS AND THUNDERSTORMS OVERSPREAD
THE REGION WEDNESDAY INTO THURSDAY.
DISCUSSION
ISSUED AT 1130 PM CDT MON OCT 12 2026
UNPRECEDENTED PROLONGED HEAT FOR THE MONTH OF OCTOBER IS COMING
TO AN END AS COOLER AIR HAS PUSHED ITS WAY THROUGH THE CWA OVER
THE DAY'S COURSE. FROPA FINALLY OCCURRED AT FALLS CITY AND
NEBRASKA'S REMAINING SQUARE MILE AROUND 10PM.
WE WATCHED AS CONVECTION DEVELOPED IN NORTH-CENTRAL KANSAS THIS
EVENING ALONG THAT SAME FRONT. HAVE MAINTAINED 25% POPS ALONG
THE FRONT OVERNIGHT FOR THIS CWA, TOO, DUE TO INCREASED
ISENTROPIC LIFT AS THE LLJ DEVELOPS. BOTH EAX (KC) AND OAX
(OMAHA) SHOW INCREASING WIND SPEEDS OVER THE PAST TWO HOURS.
ISOLATED SHOWERS HAVE DEVELOPED IN THE OMAHA METRO. EXPECT TO
BE DRY BY MORNING.
TUESDAY
CONVECTION WILL BE MORE WIDESPREAD TUESDAY EVENING. THE FRONT,
WELL INTO KS/MO WILL PUSH BACK TOWARD FALLS CITY OVER THE COURSE
OF THE DAY THANKS IN PART TO THE UNSEASONABLE HEAT AND HUMIDITY
AHEAD OF THE FRONT AND THE ASSOCIATED SOUTHERLY SFC WINDS.
INITIATION WILL BE AIDED BY H5 HEIGHT FALLS AND FORCING FOR
ASCENT AS THE AREA FINDS ITSELF UNDER THE RIGHT-REAR ENTRANCE
QUADRANT OF A JET STREAK.
MODELS ARE NOW IN AGREEMENT THAT BEST INSTABILITY WILL REMAIN
SOUTH OF THIS CWA OR AT BEST IN OUR FOUR SOUTH-EASTERN-MOST
COUNTIES. WITH SHEAR NEARLY PARALLEL TO THE FRONT, EXPECT STORM
MODE TO EXCLUDE SUPERCELLS. THE NORTHERN 90% OR MORE OF THE AREA
WILL REMAIN COMPLETELY DRY. THE LAST OF THE SHOWERS SHOULD BE
WRAPPING UP AS THE SUN RISES WEDNESDAY MORNING.
WEDNESDAY.
MOST OF THE DAY WILL BE DRY AS RAIN CONTINUES ACROSS KS AND THE
COLD FRONT. POPS BECOME LIKELY LATE WEDNESDAY NIGHT AS A SFC
LOW DEVELOPS IN THE LEE OF THE ROCKIES AND PUSHES NORTHEAST
ALONG THE FRONT. THE UPPER LEVEL TROF APPROACHES FROM THE WEST.
PRECIPITABLE WATER WILL BE PUSHING INTO THE 90TH PERCENTILE FOR
MID-OCTOBER WITH VALUES NEAR AN INCH AND A HALF.
THURSDAY
RAIN IS LIKELY ON THURSDAY, BUT IT'S WORTH NOTING THAT THE EC
KEEPS THE BULK OF THE MOISTURE SOUTH WITH DRIER AIR ERODING THE
NORTHERN EDGE OF THE RAIN SHIELD. OTHER GLOBAL DETERMINISTIC MODELS
INDICATE A PROLONGED PRECIP EVENT WITH THE AREA REMAINING UNDER
A DEFORMATION ZONE INTO THE AFTERNOON. THE CHANCE OF SEEING 1"
OR MORE ACCUMULATE IN THE 24 HOURS FROM WEDNESDAY NIGHT INTO
THURSDAY RUNS FROM 25% TO 50% (NBM).
THE REST OF THE DAYS
COOL SFC HIGH PRESSURE WORKS IN ON FRIDAY, LEAVING HIGHS IN THE
50S; SHY OF SEASONAL NORMS AND THE COOLEST DAY SINCE MAY. AS
WINDS RELAX UNDER THE CLEAR SKIES FRIDAY NIGHT, TEMPS WILL
PLUMMET AND WIDESPREAD 30S ARE CURRENTLY FORECAST. PATCHY FROST
IS LOOKING INCREASINGLY LIKELY AS THE FREEZING MARK LOOKS
HARDER TO HIT.
TEMPS SHOULD IMPROVE OVER THE COURSE OF THE WEEKEND AS RIDGING
WORKS THROUGH THE AREA. SUNNY SKIES WILL HELP, BUT THAT SUN
ISN'T RIDING AS HIGH IN THE SKY AS IT WAS JUST A MONTH AGO.
AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/
ISSUED AT 613 PM CDT MON OCT 12 2026
COLD FRONT HAS PASSED ALL THREE TAF SITES THIS EVENING, LEAVING
NORTHERLY WINDS IN ITS WAKE. WINDS WILL END UP CLOSE TO 5-10
KNOTS OVERNIGHT. CIGS WILL LOWER OVER THE COURSE OF TUESDAY
BEGINNING AT OFK AROUND SUNRISE AND AROUND 11AM AT LNK AND OMA.
MVFR CIGS ARE FORECAST AT ALL THREE SITES THROUGH MUCH OF
TUESDAY BEFORE IMPROVING IN THE EVENING. SCATTERED SEVERE
THUNDERSTORMS ARE POSSIBLE, BUT LIKELY TO BE SOUTH OF OMA AND
LNK AND THEREFORE NOT MENTIONED IN LATEST TAFS.
OAX WATCHES/WARNINGS/ADVISORIES
NE...NONE.
IA...NONE.
DISCUSSION...NICOLAISEN
AVIATION...NICOLAISEN
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