039 FXUS63 KEAX 131734 AFDEAXArea Forecast Discussion National Weather Service Kansas City/Pleasant Hill MO 1234 PM CDT Sat Sep 13 2025
.KEY MESSAGES...
- Above normal temperatures continue today into the first half of next week. Highs remain in the upper 80s to mid 90s into Tuesday.
- A few chances for isolated to scattered showers and storms arrive Sunday afternoon into early Monday. No severe expected.
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.DISCUSSION... Issued at 236 AM CDT Sat Sep 13 2025
The area remains dominated by mid to upper level ridging with deep troughing over the western U.S. At the surface, winds over the area remain out of the south due to a low over SD. As the ridge axis remains situated over the area coupled with persistent southerly windflow, expect another day of above normal temperatures with highs in the low to mid 90s. Going into Sunday, the mid to upper level ridge shifts slightly to the east as the troughing over the western U.S. transitions to a closed low and tracks almost due north along the western edge of the ridge into the Dakotas. High temperatures for Sunday are anticipated to be a few degrees cooler than today, ranging in the upper 80s to mid 90s, as the ridge axis gradually shifts farther east.
Sunday afternoon into the predawn hours of Monday, there will be a chance for isolated to scattered showers and storms as a H500 shortwave, within the circulation of the low over the Dakotas, pushes through the area. Limited instability and weak shear will keep the severe threat almost non-existent for our area. A more favorable environment (better forcing and more instability) for severe weather resides farther to our west. Given the few hundred J/kg of MUCAPE, showers appear more likely with a few storms possible. There is some uncertainty concerning the coverage as hi- res models diverge on solutions. The 00Z HRRR suggests showers and storms over eastern KS and areas north of I-70 while the NAMNST keeps most of precip to our west with minimal coverage over our area. The LREF, for now, seems most reasonable keeping a 35-45% chance for showers and storms over eastern KS and northwest MO and up to a 30% chance for areas primarily north of I-70.
Above normal temperatures persist through the first half of next week with highs in the upper 80s to low 90s as the mid to upper level ridge maintains its influence over our area. The forecast remains mostly dry with a few spotty chances for precip on Tuesday due to a passing shortwave. For the second half of next week, temperatures return much closer to seasonal averages as a closed mid to upper level low pushes a surface cold front through the area. A series of shortwaves within the flow, associated with the upper low, will bring multiple chances for showers and storms starting Wednesday into Friday.
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.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/... Issued at 1234 PM CDT Sat Sep 13 2025
VFR conds will prevail with increasing high clouds thru the pd. Winds will be out of the SW btn 10-15kts thru 23Z-00Z aft which winds will back to the south and diminish to 5-10kts.
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.EAX WATCHES/WARNINGS/ADVISORIES... MO...None. KS...None.
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DISCUSSION...Collier AVIATION...73
NWS EAX Office Area Forecast Discussion