801
FXUS63 KOAX 261717
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1217 PM CDT FRI JUN 26 2026
KEY MESSAGES
- MILD WEATHER CONTINUES THROUGH SATURDAY, WITH A STRONG TO
SEVERE STORM POSSIBLE SATURDAY EVENING, PRIMARILY ACROSS
NORTHEAST NEBRASKA.
- HEAT BUILD THIS WEEKEND, WITH THE HOTTEST CONDITIONS EXPECTED
SUNDAY AND MONDAY. HEAT INDEX VALUES MAY REACH 105 TO 110
DEGREES.
- HOT AND HUMID CONDITIONS ARE EXPECTED TO PERSIST INTO NEXT
WEEK, WITH PERIODIC EVENING AND OVERNIGHT THUNDERSTORM
CHANCES.
DISCUSSION
ISSUED AT 1216 PM CDT FRI JUN 26 2026
TODAY AND TOMORROW...
WATER VAPOR IMAGERY AND OBJECTIVE ANALYSIS THIS AFTERNOON REVEAL
GENERALLY ZONAL FLOW ACROSS THE CENTRAL PLAINS, WITH A FEW EMBEDDED
SHORTWAVE DISTURBANCES ALOFT AS AN AMPLIFYING TROUGH MOVES INTO THE
WESTERN CONUS. CLOUD COVER WILL BE SLOW TO ERODE THROUGH THE DAY,
ESPECIALLY ACROSS SOUTHEAST NE AND SOUTHWEST IA, WHERE THE NORTHERN
EDGE OF THE CLOUD SHIELD ASSOCIATED WITH A DEPARTING SURFACE LOW
CONTINUES TO BRUSH THE AREA. SOME IMPROVEMENT IS EXPECTED BY THE
AFTERNOON AND EVENING, BUT HIGHS SHOULD REMAIN LIMITED TO THE 70S TO
LOW 80S. TODAY IS A GREAT DAY TO TAKE CARE OF ANY OUTDOOR CHORES
BEFORE THE HEAT BUILDS IN. A LOW-LEVEL OVERCAST CLOUD DECK WILL WORK
IN FROM THE SOUTH OVERNIGHT.
BY SATURDAY AND INTO THE WEEKEND, THE AMPLIFYING TROUGH TO OUR WEST
WILL FORCE MID-LEVEL RIDGING TO BUILD INTO THE CENTRAL PLAINS AND
LOWER MISSISSIPPI VALLEY. AHEAD OF THE APPROACHING SYSTEM AND
ASSOCIATED SURFACE LOW TO OUR WEST, A WARM FRONT WILL SLOWLY LIFT
NORTHWARD ACROSS THE AREA SATURDAY, ACCOMPANIED BY INCREASING
MOISTURE TRANSPORT. AFTERNOON HIGHS ARE EXPECTED TO REACH THE LOW TO
MID 80S, LIKELY HELD BACK SOMEWHAT BY CLOUD COVER, WHILE DEWPOINTS
CLIMB INTO THE UPPER 60S TO LOW 70S.
PRECIPITATION CHANCES RETURN SATURDAY EVENING, GENERALLY IN THE 25-5
0% RANGE ACROSS NORTHEAST NEBRASKA AND WESTERN IOWA, ALONG THE
NORTHWARD ADVANCING FRONT AS THE LOW-LEVEL JET STRENGTHENS AND NOSES
INTO IT. THIS POTENTIAL REMAINS CONDITIONS. IF STORMS ARE ABLE TO
DEVELOP, SUFFICIENT SHEAR AND INSTABILITY WOULD SUPPORT A STRONG TO
SEVERE STORM OR TWO, WITH ISOLATED HAIL AND DAMAGING WIND GUSTS THE
PRIMARY HAZARDS. HOWEVER, RISING MID-LEVEL HEIGHTS MAY BE ENOUGH TO
SUPPRESS CONVECTIVE INITIATION ALTOGETHER. ANY STRONG CHANCES SHOULD
SHIFT NORTHWARD OVERNIGHT.
SUNDAY AND BEYOND...
SUNDAY INTO EARLY NEXT WEEK, A MID-LEVEL RIDGE WILL CONTINUE TO
BUILD INTO THE CENTRAL PLAINS AND MID-SOUTH, LEADING TO A NOTABLE
INCREASE IN TEMPERATURES ACROSS THE REGION. CONFIDENCE IS HIGHEST
THAT SUNDAY AND MONDAY WILL BE AMONG THE HOTTEST DAYS OF THE PERIOD
FOR MOST LOCATIONS, WITH HIGHS GENERALLY IN THE 94 TO 100 DEGREE
RANGE. SOUTHERLY WIND GUSTS OF 25-35 MPH WILL HELP DRAW RICHER
MOISTURE NORTHWARD, WITH DEWPOINTS CLIMBING INTO THE UPPER 60S TO
MID 70S. THIS WILL PUSH HEAT INDEX VALUES INTO THE UNCOMFORTABLE 105
TO 110 DEGREE RANGE, WITH THE HIGHEST VALUES EXPECTED ACROSS
SOUTHWEST IOWA WHERE THE HIGHER DEWPOINTS RESIDE. RELIEF IS NOT ON
THE HORIZON, AS HIGH TEMPERATURES REMAIN IN THE MID TO UPPER 90S
THROUGH THE WORK WEEK WITH DAILY HEAT INDEX VALUES GENERALLY IN THE
95 TO 105 DEGREE RANGE.
HEADING INTO MONDAY, THE WESTERN TROUGH IS EXPECTED TO BEGIN EDGING
FARTHER INTO THE PLAINS AS A STRONGER MID-LEVEL JET STREAK LIFTS
ACROSS THE NORTHERN PLAINS. THIS SHOULD HELP TO NUDGE THE RIDGE
SLIGHTLY EASTWARD AND BRINGING PERIODIC PRECIPITATION CHANCES BACK
TO THE REGION. FROM MONDAY ONWARD, NIGHTLY POPS GENERALLY REMAIN IN
THE 20-50% RANGE. A VERY UNSTABLE AIR MASS IS EXPECTED TO BE IN
PLACE DURING THIS TIME, THOUGH THE OVERALL SEVERE WEATHER POTENTIAL
WILL DEPEND HEAVILY ON THE TIMING AND TRACK OF ANY SUBTLE SHORTWAVE
ENERGY EJECTING OUT OF THE TROUGH, ESPECIALLY WITH SHEAR EXPECTED TO
REMAIN SOMEWHAT LIMITED.
ENSEMBLE GUIDANCE CONTINUES TO SHOW AT LEAST SOME QPF SIGNAL IN OR
NEAR THE FORECAST AREA EACH NIGHT, WITH SUPPORT FROM THE GEFS, EPS
AND EPS-AIFS. EPS- AND GEFS-BASED MACHINE LEARNING GUIDANCE ALSO
CONTINUE TO SHOW LOW-END SEVERE WEATHER PROBABILITIES, GENERALLY IN
THE 5-15% RANGE, MONDAY THROUGH WEDNESDAY. THE OVERALL PATTERN
REMAINS SUPPORTIVE OF ONE OR MORE NOCTURNAL MCSS EARLY NEXT WEEK, AS
A STRENGTHENING LOW-LEVEL JET FEEDS MOISTURE AND ELEVATED
INSTABILITY INTO THE REGION ALONG THE EDGE OF THE RIDGE. HOWEVER,
CONFIDENCE IN TIMING AND PLACEMENT REMAINS LOW AND WILL DEPEND
HEAVILY ON MESOSCALE DETAILS. ANY CONVECTION COULD LOCALLY TEMPER
THE HEAT THROUGH CLOUD COVER AND OUTFLOW, BUT THE BROADER HOT AND
HUMID PATTERN IS EXPECTED TO PERSIST THROUGH THE PERIOD.
AVIATION /18Z TAFS THROUGH 18Z SATURDAY/
ISSUED AT 1143 AM CDT FRI JUN 26 2026
A DECK OF MVFR CEILINGS REMAIN IN PLACE ACROSS SOUTHEAST
NEBRASKA THIS AFTERNOON. WHILE VFR CONDITIONS ARE FAVORITE THIS
AFTERNOON, BRIEF PERIODS OF MVFR CONDITIONS MAY WORK INTO KLNK.
A BROKEN TO OVERCAST CLOUD DECK AT FL050-080 WILL REMAIN IN
PLACE THROUGH THE DAY. OTHERWISE, WIDESPREAD IFR CEILINGS ARE
EXPECTED TO OVERSPREAD ALL THE TERMINALS LATER THIS EVENING INTO
THE OVERNIGHT PERIOD. PATCHY LIFR CONDITIONS WILL BE POSSIBLE
EARLY SATURDAY MORNING, PRIMARILY AT KLNK. CEILINGS WILL SLOWLY
BREAK UP AND IMPROVE AFTER 27/14Z. WINDS WILL REMAIN LIGHT AND
OUT OF THE EAST- SOUTHEAST, INCREASING IN THE FINAL FEW HOURS OF
THE FORECAST PERIOD.
OAX WATCHES/WARNINGS/ADVISORIES
NE...NONE.
IA...NONE.
DISCUSSION...WOOD
AVIATION...WOOD
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