


Area Forecast Discussion
Issued by NWS Topeka, KS
Issued by NWS Topeka, KS
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385 FXUS63 KTOP 030514 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 1214 AM CDT Thu Jul 3 2025 .KEY MESSAGES... - Temperatures remain near average for early July for the next several days with increasing humidity into the holiday weekend. - Storm chances return on the 4th and linger into early next week, although greatest chances (40-60%) come Friday night through Saturday night. && .DISCUSSION... Issued at 244 PM CDT Wed Jul 2 2025 An upper ridge dominates the central and southern Rockies and Plains, while a southern stream trough is noted over southern CA with the northern stream off the coast of British Columbia. Sfc high pressure is starting to move off to the east while low pressure is developing in CO in response to the southern stream trough. This pattern will keep quiet weather in place at least through tonight and likely Thursday as well, with the upper ridge axis moving overhead. Lee troughing should deepen through the day Thursday, increasing southerly low-level flow and moisture transport. As such, conditions look slightly more humid by Thursday afternoon. The vast majority of model guidance keeps any precip south of the area, so between that and a lack of clear source of lift, have kept a dry forecast. Heading into the 4th of July holiday, moisture transport increases further while the aforementioned southern stream trough dampens and traverses across the central Rockies and Plains. A few pop-up thunderstorms can`t entirely be ruled out during the afternoon hours with 1500-2500 J/kg of CAPE, although greater storm chances look to be focused towards the late evening and overnight hours with the upper wave. Regardless of timing, the environment doesn`t have much shear but Pwat looks to get above 2" by Friday evening. With this setup, am not anticipating severe storms, but heavy rain and gusty winds would be a reasonable possibility. This first wave departs to the east later Saturday morning, but another one is close behind and looks to bring another round of showers and storms Saturday night into early Sunday. A weak frontal boundary accompanies this second system, but looks to have little impact on temperatures (a few degrees at most) as highs are forecast in the mid to upper 80s with lows in the upper 60s through about mid-week. Daily thunderstorm chances are in the forecast through mid-week as subtle perturbations round the upper ridge to our south each day. However, chances at any particular location are on the low side at this time, given lower confidence on timing and placement of these disturbances this far out. Temperatures may also be impacted depending on rain and cloud cover, but in general it looks likely we stay near average for early July into early next week. && .AVIATION /06Z TAFS THROUGH 06Z FRIDAY/... Issued at 1213 AM CDT Thu Jul 3 2025 VFR at all TAF sites through the TAF period with light southerly wind and mostly clear sky. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Picha AVIATION...Jones