742
FXUS63 KOAX 080508
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1208 AM CDT MON JUN 8 2026
KEY MESSAGES
- WARMER WEATHER BUILDS IN MONDAY LASTING THROUGH MUCH OF THE
WEEK. HIGH TEMPS ARE FORECAST TO PEAK HIGHER THAN THEY HAVE
SO FAR THIS YEAR.
- HEAT COULD BE DISRUPTED BY STRONGER STORMS THAT WILL TRY TO
DEVELOP AND MOVE THROUGH THE AREA MONDAY THROUGH WEDNESDAY.
- AFTER A SCORCHER OF A WORK WEEK, NEXT WEEKEND BRINGS COOLER
TEMPERATURES.
DISCUSSION
ISSUED AT 1130 PM CDT SUN JUN 7 2026
ANOTHER JUNE DAY LEAD TO ANOTHER EVENING OF WATCHING CONVECTION
OVER THE CORN BELT. TODAY'S ACTIVITY WAS SPOTTIER THAN THE PAST
FEW NIGHTS AND STORMS WERE LESS VOLATILE, TOO. THE ONLY PRODUCT
ISSUED THIS EVENING WAS A FLOOD ADVISORY FOR HEAVY RAIN IN
CUMING COUNTY. THE VAST MAJORITY OF THE SHOWERS ARE NOW EAST OF
THE MISSOURI RIVER THIS EVENING AS THE MID- LEVEL CUT-OFF LOW
CONTINUES TO FILL IN AND PUSH NORTHEAST AND OVER THE RIDGE
AXIS - FINALLY GETTING CAUGHT BACK UP IN THE OVERALL PATTERN.
WITH THIS, THE MOSTLY CLOUDY SKIES HAVE CLEARED FOR ALL BUT
WESTERN IOWA. THE CLOUD COVER HELPED HOLD HIGHS TO NEAR SEASONAL
NORMS TODAY AND COOLER THAN THE PAST FEW DAYS. THEY FELL A
CONSIDERABLE SPAN SHORT OF THE FORECAST HIGHS OF THE NEXT THREE
DAYS. SOME SPOTS THAT MANAGED UPPER-70S FOR MAXIMUMS TODAY MAY
SEE MID-90S BY MID-WEEK.
TONIGHT WILL BE DRY, BUT RADIATIONAL COOLING WILL ALLOW TEMPS TO
FALL TO NEAR CURRENT DEWPOINTS. WITH QUIET WINDS AND SUBSIDENCE
BEHIND THE DEPARTING LOW, PATCHY FOG MAY DEVELOP. ODDS ARE BEST
WEST OF THE MISSOURI RIVER, BUT ALL LOCATIONS MAY SEE SOME
REDUCED VISIBILITY BEFORE CLEARING IN THE MORNING.
MONDAY
AFTER THE EARLY MORNING FOG, SOME SMALL POPS (20%) ARE
WARRANTED AS A DECAYING MCS IS PROGGED TO PUSH INTO THE AREA.
CURRENT CAM GUIDANCE KEEPS THINGS PRIMARILY DRY, BUT THESE
COMPACT SYSTEMS TEND TO HAVE A LONGER LIFESPAN THAN CAMS GIVE
THEM CREDIT FOR.
UNDER PARTY CLOUDY SKIES, HIGH TEMPS SHOULD BE ABOUT 5 DEGREES
WARMER THAN THEY WERE ON SUNDAY.
ISOLATED AFTERNOON/EVENING STORMS ARE POSSIBLE AS H5 WINDS
INCREASE AND BULK SHEAR GROWS CLOSER TO 30 KNOTS. BETTER PRECIP
CHANCES WAIT FOR AFTER DARK WHEN A SHORT-WAVE DRIVEN MCS AGAIN
APPROACHES FROM THE WEST AROUND MIDNIGHT. IT KILLS THIS
CONVECTIVE COMPLEX ON THE WESTERN EDGE OF THE CWA... BUT WE KNOW
BETTER THAN TO PUT TOO MUCH FAITH INTO THOSE SOLUTIONS. THIS
COULD BRING A THREAT OF HAIL, BUT MOSTLY DAMAGING WINDS. THE 00Z
HRRR HAS SOME 40-50 KNOT WINDS FINDING THEIR WAY THIS FAR EAST.
TUESDAY
FOR MANY SPOTS, TUESDAY WILL BE THE HOTTEST DAY OF THE YEAR SO
FAR WITH SOME TRIPLE DIGITS POSSIBLE IN THE TYPICALLY HOTTEST
SPOTS. DEWPOINTS PUSHING TO NEAR 70F WILL LEAVE HEAT INDICES
CLIMBING TO 105-110F. CONSIDERING THIS IS THE FIRST REAL HEAT
WAVE OF THE YEAR, WE MUST CAUTION THAT IMPACTS TO THE HUMAN (AND
ANIMAL) BODY TEND TO BE HIGHER EARLY IN THE SEASON AS THE BODY
HAS NOT GROWN ACCUSTOMED. A "MAJOR HEAT RISK" IS FORECAST FOR
MOST OF THE AREA TUESDAY AND WEDNESDAY. IT'S WORTH NOTING THAT
TWO CONSECUTIVE DAYS OF HEAT TEND TO TAKE A GREATER TOLL THAN
TWO SEPARATE HOT DAYS WOULD.
CONFIDENCE IN THE HEAT ISN'T AS HIGH AS IT COULD BE AS WE'RE
EXPECTING A COLD FRONT TO STALL JUST NORTHWEST OF THE FORECAST
AREA WHICH ADDS SOME UNCERTAINTY. AND WITH MCS'S IN THE
FORECAST, UNCERTAINTY CLIMBS SOME MORE AS THEIR TIMING HAS BEEN
KNOWN TO THROW A WRENCH IN TO A SCORCHING FORECAST BEFORE, TOO.
IF THEY WERE TO PUSH THROUGH THE AREA DURING AFTERNOON HOURS,
THEY COULD KNOCK 10-15 DEGREES OFF A FORECAST MAXIMUM. TUESDAY'S
PROBABILITY FOR REACHING 100F OR MORE PEAKS AT ABOUT 25% (NBM) IN
NORTHEAST NEBRASKA AND IS NEAR AT OMAHA, LINCOLN, AND ONAWA, IA
AND POINTS WEST OF THERE.
THUNDERSTORMS ARE EXPECTED ALONG THE SD STATE LINE ON TUESDAY
NIGHT AS A BOUNDARY APPROACHES FROM THE NORTHWEST. WE COULD SEE
SOMETHING DEVELOP IN THE WARM SECTOR IN THE AFTERNOON/EVENING,
TOO.
WEDNESDAY
ODDS FOR HITTING 100F ARE VERY SIMILAR TO THOSE OF TUESDAY.
THE UPPER TROF PUSHING ASHORE OUT WEST TONIGHT PUSHES THROUGH
THE HIGH PLAINS ON WEDNESDAY AND DRIVES THE COLD FRONT THROUGH
EASTERN NEBRASKA ON WEDNESDAY AFTERNOON. MODELS HAVE BEEN
TRENDING FASTER WITH THIS FEATURE, WHICH HAS PUSHED THE THREAT
OF SEVERE WEATHER FARTHER EAST AS A RESULT. BEST CHANCES NOW
WILL BE ACROSS IOWA. EXPECT STORMS TO BEGIN UP NORTH BEFORE
BUILDING SOUTH ALONG THE TRAILING FRONT. HIGH TEMPS IN IOWA MAY
OUTPACE THOSE OF THE DAY BEFORE WHILE COMMUNITIES FARTHER WEST
MAY BEGIN THE FORECAST COOLING SPELL.
HEADING INTO THE WEEKEND
THAT FRONT IS PROGGED TO STALL OUT AND VACILLATE BACK AND FORTH
ACROSS MISSOURI AND IOWA. THIS FEATURE WILL HELP PRODUCE AN
OPPORTUNITY FOR SHOWERS AND STORMS ON A REGULAR BASIS. WE'LL
REMAIN IN THE "COOL" SECTOR OF SYSTEM. HIGHS FOR THURSDAY
THROUGH SATURDAY WILL BE IN THE 80S. SUNDAY MAY BE COOLER YET.
WITH CONTINUED NORTHWESTERN H5 FLOW, REGULAR OPPORTUNITIES FOR
SHOWERS AND STORMS CONTINUES THROUGH THE 7-DAY AS ANY LITTLE
RIPPLE IN THE JET WILL KICK UP SOME CONVECTION.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 1203 AM CDT MON JUN 8 2026
VFR CONDITIONS WILL GRADUALLY DETERIORATE TO MVFR AND IFR AS
LOWER CEILINGS SEEP IN FROM THE EAST. PATCHES OF DENSE FOG MAY
ALSO DEVELOP BY EARLY MONDAY MORNING, MAINLY ACROSS SOUTH
CENTRAL NEBRASKA. EXPECT MVFR CONDITIONS TO ARRIVE BY 07Z AT
KOMA, 09Z AT KLNK, AND 10Z AT KOFK. IFR CONDITIONS ARE MOST
LIKELY AFTER 11Z IN KOMA AND 12Z AT KLNK, BUT SHOULD IMPROVE TO
VFR BY AROUND 15Z MONDAY MORNING. A FEW ISOLATED SHOWERS MAY
DEVELOP MONDAY AFTERNOON, HOWEVER CONFIDENCE IN ANY IMPACTS
REACHING THE TAF SITES REMAINS LOW AT THIS TIME.
OAX WATCHES/WARNINGS/ADVISORIES
NE...NONE.
IA...NONE.
DISCUSSION...NICOLAISEN
AVIATION...KG
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