062 FXUS63 KOAX 142339 AFDOAXArea Forecast Discussion National Weather Service Omaha/Valley NE 639 PM CDT Tue Oct 14 2025
.KEY MESSAGES...
- A chance (15-35%) of light showers continues into Wednesday. An isolated thunderstorm is possible. Areas of fog tonight, especially in northeast Nebraska.
- Temperatures quickly warm back up on Wednesday and Thursday, with afternoon highs in the 70s to low 80s. Breezy to windy conditions on Thursday.
- A couple fronts move through the area on Friday and Saturday, with a 20-45% chance of showers and thunderstorms. Temperatures trend cooler, with highs in the 60s to low 70s.
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.DISCUSSION... Issued at 248 PM CDT Tue Oct 14 2025
Late this afternoon through Wednesday:
Early afternoon water vapor imagery and objective analysis indicate a mid/upper-level high centered over northeast TX with an associated ridge extending into the north-central U.S. Meanwhile, a prominent, mid/upper-level low was moving onto the central CA coast. The low/trough is forecast to continue east through the Sierra Nevada tonight, and into the Great Basin on Wednesday, while the downstream ridge amplifies across the same general area. At the surface, a warm front located near the NE- KS border as of 2 PM is expected to slowly lift north through our area this period, with a warmer air mass moving into the region on Wednesday.
Low-level warm air and moisture advection occurring to the north of the warm front are contributing to widespread clouds and areas of showers/drizzle this afternoon. Those same processes will maintain a chance (15-35% PoPs) of showers and perhaps an isolated thunderstorm tonight into Wednesday morning to the north of the warm front. Areas of potentially dense fog appear likely tonight, especially in parts of northeast NE. As mentioned above, we`ll see warmer temperatures on Wednesday, with highs ranging from the mid 70s across northeast NE to lower 80s across portions of southeast NE and southwest IA.
Thursday and Friday:
The Great Basin low mentioned above is forecast to move through the northern High Plains on Thursday, with a trailing mid-level trough progressing through the northern and central Plains on Friday. At the surface, a Pacific front/trough associated with the latter mid-level system will shift east through the area on Friday. We`ll see breezy to windy conditions ahead of the front on Thursday, with highs in the upper 70s to low 80s. The air mass should remain moist enough (minimum RH of 35-45%) to limit any fire-weather concerns to corn and bean fields where harvest is ongoing.
Thursday looks to remain dry, with increasing shower and thunderstorm chances (20-45% PoPs) on Thursday night into Friday, along and ahead of the front. It currently appears that instability will remain limited ahead of the front on Friday afternoon, which would preclude a severe-weather risk. Those trends will continue to be monitored.
This weekend into early next week:
The 12z global ensemble means are in good agreement in depicting the movement of another significant trough through the central U.S. on Saturday, in tandem with a surface cold front. This forecast update will indicate small PoPs (15-20%) in parts of southeast NE and southwest IA at that time. However, various models indicate the potential for showers along/behind the cold front, so PoPs may need to be expanded in subsequent forecast updates. The Saturday trough will continue east of the MS Valley on Sunday, with mid-level heights building across the northern and central Plains. By early next week, there is growing model spread in the evolution of another mid-level trough over the western U.S., which leads to greater uncertainty in our forecast.
High temperatures are expected to be near to slightly above normal, with readings in the 60s and 70s.
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.AVIATION /00Z TAFS THROUGH 00Z THURSDAY/... Issued at 639 PM CDT Tue Oct 14 2025
MVFR to IFR ceilings are expected to persist into Wednesday with some periods of reduced visibility due to fog/drizzle, mainly across eastern NE. Latest guidance suggests visibility impacts are most likely at OFK, possible at LNK (40% chance), and unlikely at OMA (10% chance). In addition, there could be a few showers or an isolated thunderstorm Wednesday morning, but given expected spotty nature, confidence in anything moving through a TAF site is low. Ceilings and visibility should start to improve by mid to late morning Wednesday with VFR conditions expected through the afternoon. Otherwise, winds will be easterly becoming southeasterly, with sustained speeds of 10-12 kts by Wednesday afternoon.
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.OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None.
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DISCUSSION...Mead AVIATION...CA
NWS OAX Office Area Forecast Discussion