038 FXUS63 KEAX 081126 AFDEAXArea Forecast Discussion National Weather Service Kansas City/Pleasant Hill MO 626 AM CDT Mon Sep 8 2025
.KEY MESSAGES...
- Light rain late today/tonight into Tuesday morning.
- Well above normal temperatures for the latter half of the week.
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.DISCUSSION... Issued at 312 AM CDT Mon Sep 8 2025
IR and nighttime microphysics satellite imagery shows ACCAS developing across central KS and NE. Recent regional radar imagery confirms some showers and thunderstorms developing in north-central KS and south-central NE. This is developing in an area of strong isentropic ascent, evident at the 305 K and 310 K levels, in conjunction with modest moisture transport associated with the low- level jet. This is all ahead of a shortwave trough moving into eastern CO based on water vapor imagery. This area of showers and storms will track eastward this morning and through the day. However, the 08/00Z TOP sounding shows significant dry air to overcome. Given this, and the diurnal weakening of the low-level jet, it seems unlikely our northwestern zones will see any precipitation this morning. This evening and tonight, as the low-level jet begins to strengthen again, increasing moisture transport into NE KS and NW MO, and as isentropic ascent increases, showers and a few storms will increase in coverage. CAPE continues to look limited with only a few hundred J/kg noted. So it seems more likely that we`ll see more showers/rain rather than storms. Ensemble guidance shows 40-50% probability for at least .25" for the 24-hour period ending at 18Z Tuesday in far NW MO. This drops to a 30-40% probability for 0.5" for the same time frame. Overall, NW MO should see between 0.25"-0.5", with lesser amounts further east and potentially little or no rainfall east of I-35.
A strong upper ridge will build eastward into the middle of the country by Wednesday, starting a trend for above normal temperatures that will likely persist through the weekend. By Friday and Saturday, the ridge axis looks to be centered right over the region and with southwesterly low-level flow, we should see highs climb into the middle 90s Friday and Saturday. The ridge may get pushed east as a trough encroaches on it late in the forecast. That may help temperatures fall back into the 80s early next week.
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.AVIATION /12Z TAFS THROUGH 12Z TUESDAY/... Issued at 626 AM CDT Mon Sep 8 2025
An area of showers and storms in central KS is slowly moving east this morning. This area is likely to dissipate as the morning progresses and it moves into drier air. The mid and high level cloud cover associated with that activity will make it into the area. So VFR conditions are expected through the morning and afternoon hours. Tonight, a new area of showers and storms is expected to develop in eastern KS and western MO. Have added a -SHRA group to indicate this potential. Winds will increase from the south today with gusts of 20-25kts likely. Winds diminish overnight and back to the southeast.
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.EAX WATCHES/WARNINGS/ADVISORIES... MO...None. KS...None.
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DISCUSSION...CDB AVIATION...CDB
NWS EAX Office Area Forecast Discussion