Area Forecast Discussion
Issued by NWS Wilmington, OH

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204 FXUS61 KILN 180541 AFDILN AREA FORECAST DISCUSSION National Weather Service Wilmington OH 141 AM EDT Sat May 18 2024 .SYNOPSIS... After showers that remain possible through tonight and isolated activity indicated briefly Saturday afternoon, a dry forecast is in store through Tuesday night. With this dry period, temperatures will increase relatively quickly and end up 10 degrees or slightly more from climatological normals on Tuesday and overnight. && .NEAR TERM /UNTIL 6 AM THIS MORNING/...
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A dense fog advisory has been issued for southern parts of the local area due to recent obs and satellite trends showing an expansion of the fog and low visibility.
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&& .SHORT TERM /6 AM THIS MORNING THROUGH 6 AM SUNDAY/... Some few indications of widely scattered/isolated showers are apparent for Saturday. If this is the case, earlier development should be in southern forecast area, Afternoon heating will prompt what showers that may occur later in the day, at any location in the CWA, ending quickly with the setting sun. Highs will warm fairly uniformly to around 80, and lows will be again within a degree or so on either side of 60. && .LONG TERM /SUNDAY THROUGH FRIDAY/... Dry and warm conditions will start out the long term Sunday into Monday with high temperatures in the 80s. A little better instability develops on Tuesday and therefore there will be the potential for some pop up afternoon thunderstorms. These will diminish with the loss of daytime heating. A brief lull in the precipitation is expected before a cold front approaches and moves through Wednesday into Thursday. There is still some uncertainty with timing and strength of this system, however cannot rule out the potential for some severe weather Wednesday into Wednesday night. Cooler air will move into the region after the passage of the front on Thursday. There is quite a bit of model variability on Friday with either a cool dry solution or with moisture being drawn up into the area from the south. Due to this limited any precipitation chances to the chance category for Friday. && .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/... The earlier SHRA activity has waned locally, leaving in its wake clearing skies amidst a very saturated/stagnant LL environment. This is already allowing BR/FG to develop and expand rather quickly, with VSBYs already trending to IFR/LIFR for a few spots. Expect that the BR/FG will continue to expand through daybreak, with the least favorable setup for central OH sites of KCMH/KLCK where some lingering cloud cover may inhibit, or at the very least delay, the onset of BR/FG development. Elsewhere, expect LIFR/VLIFR VSBYs at the typical spots of KLUK/KILN, with some IFR VSBYs eventually likely for KCVG/KDAY as well closer to daybreak. The BR/FG may evolve into a LIFR stratus deck/CIGs before rapidly lifting to IFR, MVFR, and eventually VFR between about 13z-16z. SCT VFR Cu will prevail near/after 16z with a few spotty SHRA/TSRA possible late afternoon into early evening. Coverage of activity should be very spotty/ISO in nature, so have kept terminals dry for now. Light/VRB/calm winds will go more easterly and northeasterly during the daytime before going back light/VRB/calm once again toward the end of the period. OUTLOOK...No significant weather is expected. && .ILN WATCHES/WARNINGS/ADVISORIES...
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OH...Dense Fog Advisory until 10 AM EDT this morning for OHZ060>063- 070>073-077>082-088. KY...Dense Fog Advisory until 10 AM EDT this morning for KYZ089>100. IN...Dense Fog Advisory until 10 AM EDT this morning for INZ050-058- 059-066-073>075-080.
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&& $$ SYNOPSIS...Franks NEAR TERM... SHORT TERM...Franks LONG TERM... AVIATION...KC