409
FXUS63 KOAX 022338
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
638 PM CDT WED SEP 2 2026
KEY MESSAGES
- WIDELY SCATTERED SHOWERS/STORMS LINGER THIS AFTERNOON (10-20%
CHANCE).
- HOT AND HUMID AGAIN TODAY WITH HEAT INDEX VALUES IN THE LOW
100S ACROSS SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. A HEAT
ADVISORY REMAINS IN EFFECT THROUGH AT LEAST FRIDAY.
- HOT AND HUMID WEATHER CONTINUES ACROSS THE REGION INTO THE
WEEKEND AND INTO NEXT WEEK ALONG WITH SOME SMALL CHANCES
(10-30%) FOR NIGHTLY STORMS. WARM LOWS IN THE 70S WILL PROVIDE
LITTLE RELIEF.
DISCUSSION
ISSUED AT 1244 PM CDT WED SEP 2 2026
THE HEATWAVE CONTINUES ACROSS THE REGION. A FEW SHOWERS AND
STORMS LINGER FROM NEAR OMAHA TO HARLAN EARLY THIS AFTERNOON.
THESE SHOWERS AND STORMS ARE EXPECTED TO CONTINUE DRIFTING
TOWARDS THE NORTHEAST OVER THE NEXT COUPLE HOURS. LITTLE
RAINFALL IS EXPECTED WITH THESE. OTHERWISE, HOT AND HUMID
CONDITIONS REMAINS THE MAIN WEATHER STORY. TEMPERATURES CLIMB
WELL INTO THE 90S ACROSS THE AREA UNDER MOSTLY SUNNY SKIES.
TEMPERATURES MAY APPROACH THE CENTURY MARK OVER FAR SOUTHEAST
NEBRASKA AND SOUTHWEST IOWA. WITH DEWPOINTS REMAINING IN THE
UPPER 60S TO LOW 70S, EXPECT HEAT INDEX VALUES IN THE UPPER 90S
TO LOW 100S. HEAT INDEX VALUES MAY REACH UP TO 105 ACROSS
SOUTHEAST NEBRASKA AND SOUTHWEST IOWA WHERE A HEAT ADVISORY
REMAINS IN EFFECT. THE ADVISORY HAS BEEN EXPANDED TO INCLUDE
PORTIONS OF SOUTH-CENTRAL NEBRASKA AS THE HEAT CONTINUES TO
BUILD.
TONIGHT SEES LIMITED RELIEF AS TEMPERATURES WILL STRUGGLE TO
FALL INTO THE LOW TO MID 70S. A NOCTURNAL LOW-LEVEL JET IS
ANTICIPATED TO DEVELOP OVERNIGHT ACROSS MUCH OF THE PLAINS. OUR
AREA WILL RESIDE ON THE NORTHERN TERMINUS OF THIS LOW-LEVEL JET
AND THIS SUPPORTS ADDITIONAL SHOWER AND STORM DEVELOPMENT
DURING THE EARLY MORNING HOURS ON THURSDAY. THESE SHOWERS AND
STORMS SHOULD REMAIN RELATIVELY WEAK AS THEY DRIFT NORTHEAST
INTO EARLY AFTERNOON. ONCE THE LIMITED RAIN CLEARS, ANOTHER HOT
AND HUMID DAY AWAITS. THURSDAY AFTERNOON TEMPERATURES REMAIN
LARGELY THE SAME AS WEDNESDAY, THOUGH THEY INCREASE SLIGHTLY
OVER NORTHEAST NEBRASKA. ONCE AGAIN, WIDESPREAD 90S WITH HEAT
INDEX VALUES IN THE LOW 100S WILL CONTINUE TO BE A HAZARD.
HEADING INTO FRIDAY, EXPECT NEARLY A CARBON COPY TO THURSDAY.
WITH THIS IN MIND, THE HEAT ADVISORY HAS BEEN EXTENDED THROUGH
AT LEAST FRIDAY.
THIS WEEKEND OFFERS LITTLE RELIEF. WHILE THE RIDGE BEGINS TO
FLATTEN SLIGHTLY, TEMPERATURES ON SATURDAY MAY ONLY BE A DEGREE
OR TWO LOWER. THANKFULLY, TEMPERATURES BEGIN TO FALL ON SUNDAY
AND ESPECIALLY NEXT WEEK. AT LEAST LOWER 90S AND EVEN UPPER 80S
RETURN TO THE AREA. THIS REMAINS WELL-ABOVE NORMAL, BUT IS
WELCOMED RELIEF FROM THE OPPRESSIVE HEAT. UNFORTUNATELY,
OVERNIGHT LOW TEMPERATURES DO NOT SEE NEARLY AS MUCH OF A
DECREASE AND SHOULD REMAIN LARGELY IN THE 70S. DURING THIS
TIME, AN ACTIVE LOW-LEVEL JET AND PASSING WEATHER SYSTEMS TO OUR
NORTH MAINTAIN AT LEAST A LOW (10-30%) CHANCE OF SHOWERS AND
STORMS MOST NIGHTS AS WE CLOSE OUT THE FORECAST PERIOD.
AVIATION /00Z TAFS THROUGH 00Z FRIDAY/
ISSUED AT 634 PM CDT WED SEP 2 2026
VFR CONDITIONS ARE FORECAST THROUGH THE NEXT 24 HOURS, WITH
SOUTHERLY WIND REMAINING NEAR 10 KTS OVERNIGHT AND RAIN/STORM
CHANCES DRIFT NORTHEAST OF KOFK/KOMA. AT THE MOMENT, KOFK/KOMA
HAVE ABOUT A 20% CHANCE AT SEEING THE SPREAD OUT JUST ENOUGH TO
AFFECT THOSE TERMINALS BETWEEN 09-14Z. ALSO OVERNIGHT, STRONG
WINDS ARE FORECAST TO DEVELOP AT FL016, WITH SPEEDS OF 45 KTS
EXPECTED TO RESULT IN LOW-LEVEL WIND SHEAR. BY 14Z, WE DROP THE
LLWS IN FAVOR OF GUSTY WINDS THAT LAST THROUGH THE AFTERNOON OF
20-25 KTS OUT OF THE SOUTH.
OAX WATCHES/WARNINGS/ADVISORIES
NE...HEAT ADVISORY UNTIL 7 PM CDT FRIDAY FOR NEZ050>053-065>068-078-
088>093.
IA...HEAT ADVISORY UNTIL 7 PM CDT FRIDAY FOR IAZ069-079-080-090-091.
DISCUSSION...CHEHAK
AVIATION...PETERSEN
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