984 FXUS63 KDDC 091010 AFDDDCArea Forecast Discussion National Weather Service Dodge City KS 510 AM CDT Tue Sep 9 2025
.KEY MESSAGES...
- Thunderstorms, some potentially severe, is possible Tuesday afternoon favoring areas west of US-283.
- Generally dry with near-normal afternoon temperatures expected Wednesday through Friday.
- Temperatures begin to cool over the weekend, along with renewed precipitation chances favoring Saturday evening into Sunday morning.
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.DISCUSSION... Issued at 200 AM CDT Tue Sep 9 2025
Water vapor satellite imagery and RAP upper air analysis at 07Z Tuesday morning reveal weak upper level ridging remains in place over the spine of the Rockies, with a strong longwave trough impinging on the west coast. Daytime Tuesday, guidance indicates the ridge will emerge onto the High Plains, driven by the eastward momentum of the upstream trough. As this happens, the last vestige of surface high pressure will exit the central plains and be replaced by broad low pressure. Given subsidence under the ejecting ridge, mostly clear skies are likely across southwest KS, supporting afternoon highs in the upper 80s to low 90s. Later in the afternoon, a weak shortwave impulse cresting the ridge will eject onto the central plains, potentially providing enough forcing for thunderstorm development. While northwesterly mid-level flow will be on the order of 20 kts, south-southeast surface winds veering with height will yield adequate deep-layer shear amidst 1000-1500 J/Kg SBCAPE to support at least some storm organization/severe threat favoring areas west of US-283. Primary hazards will again be large hail and damaging wind gusts. Thunderstorms may persist through the overnight period, and may even expand in coverage, sustained by the LLJ as they translate southeastward.
Showers and weak thunderstorms, remnants from the overnight activity, may be ongoing Wednesday morning across our southeast zones as some HREF members suggest, but little to no hazards are expected. Short range ensembles agree the upper level ridge will slow down/stall atop the High Plains daytime Wednesday, resulting in another day of mostly clear skies and afternoon highs in the upper 80s/low 90s. The ridge will also likely suppress most, if not all, renewed thunderstorm activity during the afternoon, with the only hope within our area existing across our far southwest zones near Elkhart.
Thursday through the end of the period, medium range ensembles agree the upper level ridge will take its sweet time exiting the High Plains as the cut-off nature of the upstream trough will delay its ejection onto the plains until the weekend. Therefore, near-normal afternoon highs can be expected through the end of the work week, followed by decreasing temperatures over the weekend into early next week. Precipitation chances will also begin to increase as the upper trough draws near, with NBM probability of QPF exceeding 0.1" in the 25-45% range Saturday evening into Sunday morning.
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.AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... Issued at 510 AM CDT Tue Sep 9 2025
VFR flying conditions this TAF cycle for all terminals. Winds will remain aob 12 kts through 12Z Wednesday, varying from the southwest to southeast.
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.DDC WATCHES/WARNINGS/ADVISORIES... None.
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DISCUSSION...Springer AVIATION...Springer
NWS DDC Office Area Forecast Discussion