


Area Forecast Discussion
Issued by NWS Kansas City/Pleasant Hill, MO
Issued by NWS Kansas City/Pleasant Hill, MO
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
884 FXUS63 KEAX 020829 AFDEAX Area Forecast Discussion National Weather Service Kansas City/Pleasant Hill MO 329 AM CDT Wed Jul 2 2025 .KEY MESSAGES... * Heat and humidity gradually build through end of week and into first half of the weekend. - High temperatures into the upper 80s/low 90s - Heat Index values into the mid-upper 90s, possible ~100 in urban areas * 4th of July/Independence Day: Low (<25-30%) chance for showers/storms in the afternoon and evening over eastern Kansas and western Missouri. - Chances increase (30-50%) and overspread the area overnight and into the weekend. * Unsettled pattern into next week, currently yielding sporadic storm chances and seasonable temperatures. && .DISCUSSION... Issued at 327 AM CDT Wed Jul 2 2025 Quiet and mostly clear conditions reside across much of the area currently. GOES Nighttime Microphysics imagery does show scattered fog development, predominantly through central and eastern Missouri, along with some scattered high level clouds. This fog development is expected to be similar to previous night in that it will primarily be relegated to prone areas and quickly dissipate in the morning given the clear skies and rapidly increasingly diurnal heating post- sunrise. Further W/NW, various GOES imagery clearly shows compact shortwave disturbance gliding across central/eastern Nebraska within the broader NW flow. This MCS/MCV is of casual note given its trajectory, which could take it into portions of NW/N Missouri. Early morning SPC Mesoanalysis depicts a widely unsupportive environment out ahead of this activity, given the widespread surface ridge and dry air mass. However, the convective activity primarily resides on the leading edge of LLJ induced moisture return. HRRR/RAP runs overnight have handled its placement and initial progression well, and are adamant on it rapidly falling apart over the next couple of hours. Unfortunately, reality has yet to truly show that. Radar depictions over central Nebraska suggest that southward building of weak/moderate convection may be the prevailing solution until LLJ weakens this morning/after sunrise. This may bring NE Kansas/NW Missouri into play before fully subsiding. Will keep an eye on this activity over the next couple of hours... Remainder of work week and into Independence Day/4th of July will be highlighted by temperatures a couple/few degrees warmer and re- moistening of the boundary layer as southerly flow returns today and remains for coming days. Nothing outrageous is expected by any stretch with the peak 850mb thermal ridge remaining displaced west, but confidence remains high in temperatures back around 90/low 90s and dew points climbing back into the upper 60s/low 70s. This too results in heat index values back into the mid/upper 90s. Possible KC Urban Heat island flirts with heat index values around 100. Progression will see temperatures return first, today actually, with upper 60s/low 70s dew points lagging a day or so. Many will note this is pretty normal for July, and they would not be wrong. But considering the Independence Day holiday, it is at least casually noteworthy. Heat and humidity of any kind can be sneaky when there is an expectation for ample outdoor festivities. Be sure to stay hydrated and prevent sunburns on the 4th, let alone surrounding days! By the 4th, precipitation chances begin to creep back into the area forecast with the established southerly flow and moistening of the boundary layer. Not large scale features are expected for the holiday, keeping the daytime and evening on the dry side. But, as we work into the night and especially overnight Friday, chances do begin to increase. At this juncture, moderate to high confidence in scattered convection over central/eastern Kansas in response to an increasing LLJ, and may see activity spread into the CWA (far eastern Kansas/western Missouri). It may be late enough that most/all outdoor pyrotechnic activities may be complete. Otherwise, this activity and general progression of PoPs overspreads the area overnight Friday and Saturday as an embedded shortwave pushes the upper ridge eastward. This introduces more widespread/broad lift, increasing PoPs into the 40% to 60% range. Put another way, confidence in convective activity over the wide area is quite high, but PoPs do not necessarily reflect this because the areal coverage is expected to be more scattered in nature. To summarize, confidence in convection over Missouri is high into the weekend, but the areal coverage is expected to be more scattered in nature. Point soundings depict poor shear profiles overall for organization, but the moisture/thermal profiles suggest an opportunity or two for enhanced downdrafts or brief hail with storms that are able to initiate. Frontal boundary move across the area Sunday, continuing at least some convective opportunity, but model consensus too begins to diverge here. Expect details to continue to come into focus over coming cycles. Peering into next week, flow pattern weak and unsettled across the region with potential for multiple shortwaves move through and/or convective complexes moving out of the Central/Northern Plains. Suffice it to say confidence is severely limited and reflected by semi-persistent low-end (15%-30%) NBM PoPs. Regardless of shower/storm chances, this pattern suggests seasonable temperatures to remain, mid 80s - low 90s. && .AVIATION /06Z TAFS THROUGH 06Z THURSDAY/... Issued at 1106 PM CDT Tue Jul 1 2025 VFR conditions with just some passing high clouds are expected through the period. Light and variable winds tonight should become south southwesterly by early Wednesday morning, remaining light (8 knots or less). && .EAX WATCHES/WARNINGS/ADVISORIES... MO...None. KS...None. && $$ DISCUSSION...Curtis AVIATION...Williams