


Area Forecast Discussion
Issued by NWS Central Illinois
Issued by NWS Central Illinois
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
44
45
46
912 FXUS63 KILX 030452 AFDILX Area Forecast Discussion...Updated Aviation National Weather Service Lincoln IL 1152 PM CDT Wed Jul 2 2025 .KEY MESSAGES... - Heat and humidity will gradually increase into the weekend. By Friday, highs will be back in the low to mid 90s with heat indices around 100 degrees. - 20% chance of showers and thunderstorms Thursday evening into Friday morning. More chances arrive late Saturday as a cold front slides into the state. && .DISCUSSION... Issued at 246 PM CDT Wed Jul 2 2025 Highs have been in the mid to upper 80s so far today, but that will change for the end of the week. The temperatures are set to continue to gradually warm with increasing humidity. Friday and Saturday, highs will be back in the low to mid 90s with heat indices around 100 degrees. Mainly, the forecast will be dry through late Saturday, but a 20% chance for thunderstorms was introduced for tomorrow evening into Friday morning. A pulse along the ridge with pass north of the area, and could potentially bring showers and thunderstorms to the forecast area if it comes further south. <1000 J/kg of MLCAPE and around 30 knots of shear could support thunderstorm development, if they can break through the cap. SPC has a marginal risk for severe weather just half a county to the north of Marshall County. There is still quite a bit of uncertainty in if they will impact central IL but didn`t want any possible storms to come as a surprise. The 4th of July (Friday) should be dry by the time fireworks are set to start. By late Saturday, a slow moving cold front will sag across the forecast area, bringing showers and thunderstorms with it. Locally heavy rain is looking probable with this wave as PWATs are showing values of 2.0-2.2 inches. The chance for showers and thunderstorms will continue into the first half of the new week. More seasonable temperatures are in store for the new week behind the cold front. Copple && .AVIATION... (For the 06z TAFs through 06z Thursday Night) Issued at 1152 PM CDT Wed Jul 2 2025 Scattered mid level clouds will sink south of the central IL terminals over the next few hours. Patchy MVFR visibility in fog is possible within a couple hours of sunrise, but confidence in this affecting a terminals is too low to include in TAF. Otherwise VFR through this evening with scattered diurnal cu and light southwest winds. 25 && .ILX WATCHES/WARNINGS/ADVISORIES... None. && $$