FXUS63 KDDC 032200 AFDDDC Area Forecast Discussion National Weather Service Dodge City KS 500 PM CDT Thu Jul 3 2025 ...Updated Aviation... .KEY MESSAGES... - Friday evening will see a risk for thunderstorms mainly during the evening hours with highest chance (60%) near Hays - Storms on Friday evening are expected to be mostly in the form of a line with damaging wind gusts (58+ mph) expected - Weekend into next week will see near intermittent chance (>20%) for showers and thunderstorms with near seasonal temperatures (highs in the lower 90s and lows in the 60s) && .DISCUSSION... Issued at 327 PM CDT Thu Jul 3 2025 Latest water vapor imagery from this afternoon reveals a trough- ridge-trough structure over CONUS with the ridge sitting over the Great Plains. A deep monsoonal plume of moisture is noted from the Sierra Madre of western Mexico into the Great Plains with resultant widespread MLCAPE over 1000 J/kg, high PW air, and little to no inhibition seen over western Kansas. This moisture plume is along and just ahead of a short wave cutting across the Central and Southern Rockies with this wave helping trigger scattered convection (<25% coverage) as far north as south-central Kansas. Although exceedingly low shear values (0-6 km bulk shear < 10 kt) are limiting the intensity of convection...some localized heavy rainfall (>0.5 inch) is noted in Barber and Comanche Counties. However, this convection will fade quickly by early evening with the remainder of tonight being dry. Otherwise, the lee trough remains anchored across eastern Colorado and New Mexico with resultant gusty south winds (>25 mph) existing while a shallow CU field in place over most of the region eroding by sunset. The only slightly interesting item of note for late tonight into early on Friday will be a narrow belt of theta-e advection in the lower 2-kft that most NWP indicates will trigger some lower stratus around sunrise but then fading by mid morning. Friday afternoon to evening will then turn slightly more active as the aforementioned short wave slides east out of the Rockies and across the Great Plains. This will help kick the lee trough eastward into western Kansas by late afternoon. Initially during the morning hours, the previously mentioned belt of theta-e advection may trigger some showers or weak thunderstorms mainly east of highway 183. However, as the area moves into the afternoon hours temps in the 80s along with dewpoints in the upper 60s to lower 70s will bring MLCAPE of 1000-2000 J/kg ahead of the surface trough with minimal inhibition by 00 UTC. Although 0-6 km bulk shear will be stronger (25-35 kt) over southwest Kansas...deeper convection is largely expected to initiate over northwest KS and far eastern CO where shear is substantially weaker. Combining this with high DCAPE values (>2000 J/kg) will result in large cold pool development with convection growing upscale into lines by the time it would move into southwest and central Kansas with at least a modest risk of 58+ mph wind gusts. Further, the highest probability (values at or above 50%) for rainfall amounts of 0.5 inch or higher will exist largely north of US Highway 50 and especially closer to the I-70 corridor. For the weekend into next week the upper ridge will rebuild over the Rockies to adjacent High Plains. This will bring a weak west- northwest flow regime across the Central Plains for days with intermittent risk (>20%) for showers and thunderstorms as the monsoonal moisture plume remains across the region. Further, temps will be near seasonal normals in the low 90s for highs and mid 60s for lows. && .AVIATION /00Z TAFS THROUGH 00Z SATURDAY/... Issued at 500 PM CDT Thu Jul 3 2025 Cumulus field will diminish around 00z Fri, but consensus of short term models is for stratus to expand northward overnight. IFR stratus ceilings are most likely at GCK/LBL/DDC 09-15z Fri. with MVFR more likely at HYS. South winds gusting near 30 kts at 22z will diminish to southeast winds 10-15 kts overnight. After 18z Fri, strong south winds will return to the airports, gusting 30-32 kts. Scattered thunderstorms are expected at/near the airports just after this TAF period, Friday evening, 00-06z Sat. Kept the very end of this TAF period dry for now, but a convective mention is expected to be required for the 06z issuance. && .DDC WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...AJohnson AVIATION...Turner