254 FXUS63 KOAX 020746 AFDOAXArea Forecast Discussion National Weather Service Omaha/Valley NE 246 AM CDT Thu Oct 2 2025
.KEY MESSAGES...
- An isolated shower or two remain possible, though unlikely, this morning.
- Expect temperatures returning to the 90s by Friday as a ridge sets in over the region.
- Cooler weather moves Sunday-Monday, with the arrival of a stout cold front. This will also bring chances for showers and storms which linger into early next week.
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.DISCUSSION... Issued at 246 AM CDT Thu Oct 2 2025
As a weak shortwave moves through, we`re seeing a couple isolated showers/storms across the region, for now staying northeast and south of our area. With a history of these storms producing lighting, went ahead and allowed 15% PoPs across portions of our area this morning. Still think low-level dry air will make it difficult for any meaningful precipitation to reach the ground.
A second ridge builds up across the region today bringing back clearer skies and warmer temperatures with highs today reaching into the upper 80s to around 90. This pattern will stay in place through Friday with some locations getting into the low 90s on Friday.
Friday should be our warmest day as we see a strong upper-level trough moving inland from the West Coast going into this weekend. Ahead of the trough, we`ll see winds ramp up out of the south with potential for gusts 35 to 45 mph. The NBM shows a 50% chance of wind gusts > 40mph for portions of northeast Nebraska where winds will likely be strongest. These winds will peak Saturday afternoon and evening, weakening overnight with the upper-level front moving through Sunday morning shifting winds more south-southwesterly to align with the warm/moist conveyor belts ahead of the developing low pressure system over the Dakotas.
Temperatures on Sunday will be milder with increasing cloud cover as moisture streams into the region. We start to see low chances for showers and storms Sunday afternoon across southeast Nebraska and southwest Iowa, ramping up Sunday evening with PoPs 35-45%. Shower/storm chances spread and expand north by Monday morning as the cold front pushes through.
Look at this cold front as the likely transition to Fall with temperatures dropping 20-30 degrees behind the front. Highs starting Monday through at least the first half of the week may stay down in the 60s with overnight lows in the mid 40s to mid 50s. The cold front stalls across our area Monday and lingers through keeping 30-50% PoPs in the forecast for much of our area apart from far northeast Nebraska through at least Tuesday morning.
There is some uncertainty in how the pattern evolves beyond Tuesday as some guidance pushes the front south Tuesday afternoon, shutting of precip as a Canadian High sinks south over the region keeping us cooler and drying us out midweek. Other guidance is slower to clear the stalled front, keeping rain chances into Wednesday. For this reason, have left in low 20% PoPs for Wednesday, with the more likely scenario being that Wednesday is dry.
Going into the latter half of next week, an active, Fall-like pattern continues with another upper-level shortwave bringing in another system Wednesday night/Thursday. Deterministic guidance is all over the place with this system, so keeping with ensemble forecast for precipitation chances. Details only get fuzzier as the patterns continue to diverge going into late next week.
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.AVIATION /06Z TAFS THROUGH 06Z FRIDAY/... Issued at 1141 PM CDT Wed Oct 1 2025
VFR conditions will prevail for the duration of the TAF cycle at all terminals. A few spotty showers may develop after 13z near KLNK and KOMA, but confidence that any precipitation makes its way to the surface is low. So, only expecting to see scattered cumulus bases around 7kft to 8kft, with most clouds dissipating after 17z. Winds will remain at or below 12 kts and generally from the south.
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.OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None.
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DISCUSSION...McCoy AVIATION...Castillo
NWS OAX Office Area Forecast Discussion