408 FXUS63 KEAX 291818 AFDEAXArea Forecast Discussion National Weather Service Kansas City/Pleasant Hill MO 118 PM CDT Mon Sep 29 2025
.KEY MESSAGES...
- Dry and seasonably warm conditions persist through most of this week. High temperatures ranging in the low to mid 80s.
- Spotty chances (below 30%) for precip arrive this weekend primarily for northeast KS and northwest MO.
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.DISCUSSION... Issued at 117 PM CDT Mon Sep 29 2025
The stagnant weather pattern that has brought us dry and seasonally warm conditions continues for most of this week. A stout mid to upper level ridge remains over most of the central U.S. with a weakening shortwave trough over the Four Corners Region. At the surface, high pressure prevails over the northeastern U.S. with a weak low emerging out of eastern CO. For today, as the mid to upper level ridge continues to influence the area, highs today will remain in the mid 80s. Mostly clear skies will allow for efficient radiational cooling, resulting in early morning lows in the upper 50s to low 60s (roughly similar to what we have been experiencing).
For Tuesday, the shortwave trough ejects out of the Four Corners Region, tracking to the east. The stagnant pattern is reinforced as the base of the mid to upper level ridge is sandwiched between the shortwave trough to the west and Tropical Storm Imelda to the east. As the shortwave trough nears the area, it will continue to fill amounting to nothing more than increased cloud coverage approaching mid-week. Due to how dry the atmosphere is, better chances for precip stay well to our west. For temperatures, highs for Tuesday remain mostly the same as they have been, around the mid 80s. Increased cloud coverage slightly impeding the effects of diurnal heating could yield high temperatures closer to the low 80s mainly for northeastern KS and northwestern MO.
As we enter the mid-week, a stout mid to upper level low nearing the Pacific Northwest will help in nudging the whole pattern to the east. At the surface, another surface high descends out of eastern Canada keeping our winds out of the south. This, coupled with no significant change in mid to upper level heights will allow above normal temperatures to persist into the second half of this week. Models begin to diverge on solutions around Thursday as they track the strength and trajectory of the mid to upper level trough over the Pacific Northwest. For now, it appears low-end chances for precipitation return early Saturday as the mid to upper level trough approaches the area. This could result in cooler temperatures sometime early next week, however uncertainty is high given this over a week out.
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.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/... Issued at 1244 PM CDT Mon Sep 29 2025
VFR conditions anticipated for the duration of the TAF period. A cu field has begun developing (as of 17Z) around 2-6 kft in addition to some high clouds (above 20 kft) mainly for eastern KS and northwestern MO. Winds will remain fairly light and mostly out of the south/southeast for the next 24 hours.
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.EAX WATCHES/WARNINGS/ADVISORIES... MO...None. KS...None.
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DISCUSSION...Collier AVIATION...Collier
NWS EAX Office Area Forecast Discussion