Area Forecast Discussion
Issued by NWS Wilmington, OH

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
885 FXUS61 KILN 261314 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 914 AM EDT Wed Oct 26 2016 .SYNOPSIS... Low pressure traveling across northern Ohio will bring showers and possibly a thunderstorm tonight into Thursday morning. High pressure and a dry airmass will return for Thursday night and Friday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... An axis of better isentropic lift is pivoting across northern portions of our fa this morning. This has resulted in an axis of light rain and sprinkles, reaching as far south as about Wilmington. The isentropic lift should push off to our northeast through this afternoon so expect the best chance for pcpn associated with this to also shift east of our area through early afternoon. Meanwhile a weak warm front will lift north into far southern portions of our fa through the afternoon hours. Areas to the south of the front will likely see significantly more sun than areas to the north as we head through the afternoon. This will result in a decent temperature gradient across our area with highs today ranging from the low to mid 50s north to around 70 across our far south. && .SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/... Tonight a H5 s/w digging thru the upper Great Lakes will push a compact sfc low and cdfnt into the fa. The trend of the finer resolution models have been to delay the onset of the pcpn. So slowed down the PoPs several hours, waiting until midnight (04Z) to bring likely PoPs into the nw counties. There is still questions about how the srn part of the pcpn will hold together. Kept likely PoPs n of I-70 and tapered the pops down to chc and slgt chc as you head south. The amount of instability is also in question tonight. It is very marginal, but don`t want to keep flip flopping, so since the previous forecast had slgt chc thunder, will leave it in the forecast. Bumped up lows to range in the 50s, with a few upper 40s. With the slower solution, Thursday would begin with the front still across the fa along with pcpn. Highest PoPs will be in Central Ohio with decreasing values both south and west. Expect the pcpn to be e of the fa by noon. Temperatures look like they will be non-diurnal Thursday, with high temperatures occurring during the late morning hours before the cooler air works in. High pressure will begin to build in Thursday night and the high will be centered over the area Friday morning. Lows Thursday night will range from the upper 30s to the lower 40s. The area of high pressure will push off to the east Friday allowing southerly flow to push highs back into the lower to mid 60s. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... Winds will pick up on Saturday out of the southwest. Wind gusts of 30 to 35 mph will be possible. These warm winds out of the southwest will bring much above normal temperatures to the area. High temperatures are expected to be around 15 degrees above normal, however still around 5 to 7 degrees below record at this time. The forecast high on Saturday at CMH is 75, record 80, normal 60. The forecast high on Saturday at CVG is 78, record 83, normal 62. The forecast high on Saturday at DAY is 75, record 82, and normal 59. A frontal boundary will work through the region on Sunday. Moisture is limited with this feature and therefore went dry to chance for precipitation chances. The best chance of some light shower activity will be across northeastern portions of the forecast area around CMH. High pressure will then work into the area Sunday night into Monday. There is not a significant precipitation signal for the end of the long term and therefore went with dry conditions. && .AVIATION /13Z WEDNESDAY THROUGH SUNDAY/... SCT to BKN mid and high level clouds will remain over the area through the morning hours. Some spotty -SHRA will continue to move east through west-central and eventually central Ohio over the next several hours. Activity has shown a steady weakening trend as it moves into area and expect that this will continue through the morning. Nevertheless, decided to keep VCSH for KDAY through 14z to account for potential for a brief light rain shower or two. Dry conditions are expected this afternoon area wide. As a warm front begins to lift north through southern parts of the area late this afternoon and evening, some partial clearing may be possible, especially for the southern terminals of KCVG, KLUK, and KILN. As this occurs, winds will gradually become more southeasterly and eventually southerly late this evening. Winds of 10-15 kts are expected this afternoon, with locally higher gusts possible. For the second half of the TAF period, a sfc low and associated cold front will track east through the Ohio Valley. Pre frontal scattered -SHRA will move through the area very late this evening through the overnight period Thursday morning. Activity will likely be disorganized in nature, so didn`t have the confidence to go more than a VCSH for any site at this time. Post frontal MVFR CIGs are expected to overspread the area from the west towards the end of the TAF period. Winds will become more westerly with the passage of the front. OUTLOOK...MVFR ceilings and visibilities are possible Thursday through Friday morning. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...Haines/Sites NEAR TERM...JGL SHORT TERM...Sites LONG TERM...Novak AVIATION...KC is the U.S. government's official web portal to all federal, state and local government web resources and services.