Area Forecast Discussion
Issued by NWS Wilmington, OH
Issued by NWS Wilmington, OH
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
47
48
49
50
925 FXUS61 KILN 280832 AFDILN AREA FORECAST DISCUSSION National Weather Service Wilmington OH 432 AM EDT Sun Apr 28 2024 .SYNOPSIS... A southerly warm flow will keep temperatures well above normal into the early part of the week. A weak cold front will cross the region late Monday night into Tuesday with showers and some thunderstorms occurring well out ahead of the front. After high pressure offers a dry period at mid week, a chance for precipitation will return for the end of the week into the weekend with the approach of the next frontal system. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... An extensive mid level ridge that covers the eastern CONUS will build northward into the southern Great Lakes today. Warm frontal system and forcing to stay north of ILN/s area today - with dry weather anticipated for the area. In the warm airmass Expect partly cloudy sky conditions with some diurnal cumulus clouds along with some high level clouds. Breezy conditions today with southwest winds gusting up to 30 mph this afternoon. Temperatures are forecast to be a bit warmer than yesterday with highs in the lower to mid 80s. These readings are close to 15 degrees above normal. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/... Mid level ridge to continue to provide dry weather tonight. Expect mainly clear sky conditions with diurnal cumulus clouds dissipating and only some high level clouds spilling in from the west. Mild temperatures to drop to lows generally in the lower 60s. Negatively tilted mid level shortwave and associated surface low to eject northeast from the Central Plains into the western Great Lakes Monday. An axis of moisture and marginal instability to advect into ILN/s FA Monday afternoon ahead of an approaching cold front. Have showers and a chance of thunderstorms developing into the west at mid afternoon. Warm temperatures to continue with highs from 80 west to the mid 80s east. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... H5 shortwave begins to propagate through the Midwest region Monday night. This will provide ample forcing in a relatively warm and humid air mass to generate showers. Instability remains pretty marginal, but some thunderstorms will certainly be possible as well Monday night. Rain will be quick to exit our fa on Tuesday given the progressive nature of this shortwave trough and associated surface cold front. Still expecting that majority of our CWA will only observe about 0.25" - 0.5" of QPF, but some locally higher amounts possible with thunderstorms. Temperatures will be slightly cooler on Tuesday behind the weak frontal passage, but highs still reach the lower to middle 70s. The pattern remains dry through at least the beginning of Thursday as subtle H5 ridging builds back in across the Ohio Valley. This will result in temperatures rebounding into the 80s for most on Wednesday, climbing a few degrees higher on Thursday as the ridge height amplifies. Model uncertainty remains for the end of the work week. There is expected to be a trough that carves its way through the Central Plains and eventually swings through our region. But trough placement, timing, and potential embedded shortwaves will modify where/when showers/storms move through our fa. && .AVIATION /08Z SUNDAY THROUGH THURSDAY/... Mid level ridge to build north into the region with precipitation staying north of the TAF sites thru Sunday. In the warm air mass expect mid and high level clouds at times through the TAF period. Some LLWS will be possible through early this morning. Southwest winds will gust up to 25 kts from mid morning through the afternoon. OUTLOOK...Thunderstorms are possible Monday afternoon and night. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...AR NEAR TERM...AR SHORT TERM...AR LONG TERM...Clark AVIATION...AR