Area Forecast Discussion
Issued by NWS Wilmington, OH

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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. --
000 FXUS61 KILN 250654 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 254 AM EDT Tue Apr 25 2017 .SYNOPSIS... An upper level low over the Carolinas will continue to slowly pull away from the region overnight. A few light showers or sprinkles will be possible overnight over eastern Ohio and eastern Kentucky. Weak high pressure will build into the area Tuesday into Wednesday, leading to dry conditions and above normal temperatures. A cold front will push into the region on Thursday and then stall out across the Ohio Valley through the weekend. This will result in a better chance of showers and thunderstorms through the second half of the week. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... Upper level low over the southeast to drift slowly east to the southeast coast overnight and then track up the eastern seaboard Tuesday. Low level east-southeast flow and weak 8H convergence axis was resulting in a few very light rain showers over eastern Ohio. As these showers move into ILN/s eastern counties they are weakening and falling apart. Will continue to mention a very low pop for a shower in the far east tonight. Otherwise, mid and low level moisture will result in considerable cloudiness overnight. These clouds should mitigate the development of widespread fog but some river valley fog is not out of the question toward sunrise, especially across the sw portion of ILN/s FA. Clouds will keep temperatures mild tonight with lows generally around 50. && .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM WEDNESDAY/... A narrow surface ridge axis will push east across our area Tuesday into Tuesday night. This will lead to some developing low level southerly flow and weak WAA through the day on Tuesday. This will result in decreasing clouds with highs on Tuesday into the mid 70s. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... Models point to an unsettled weather pattern featuring a persistent frontal boundary, enhanced by several waves of low pressure, fed by a rich supply of moisture. Area will be in a dry southerly flow between two low pressure systems on Wednesday, with no precip expected. That will change starting on Thursday when a cold front is forecast to swing through from the west, bringing the likelihood for showers and thunderstorms. The frontal boundary will wash out briefly under high pressure Thursday night, before redeveloping as a warm front and lifting across the region Friday to Sunday. This scenario suggests a prolonged period for showers and thunderstorms to develop, lasting through the weekend. A strong cold front is expected to push through Monday, accompanied by more rounds of showers and thunderstorms. Temperatures will be above normal for most of the period. Highs in the 80s Wednesday will be boosted by warm advection. Readings are forecast to slide back into the 70s Thursday and Friday due to precip and modest cold advection associated with the weakening cold front. Mainly 80s are expected Saturday and Sunday with the area in the warm sector. A retreat toward the near normal upper 60s will be possible Monday behind the stronger cold front. && .AVIATION /06Z TUESDAY THROUGH SATURDAY/...
-- Changed Discussion --
Upper level low rotating near the coast of South Carolina this morning will pivot northeast to a position off the mid Atlantic region by this evening. Atlantic moisture funneling west between this low and high pressure to the north across southeast Canada will bring some clouds to the region. A low level jet pointing westward may even bring a few showers close to the KCMH/KLCK terminals toward sunrise. Clouds should thicken overnight...then scattered by Tuesday afternoon as the low level jet weakens while ridging develops at the surface and aloft. It now looks like ceilings should remain VFR, but a few pockets of MVFR could still occur until about 15Z. For tonight, upper level low will continue to pivot toward the southern New England coast. Any lower level clouds across the region should dissipate after sunset, leaving just some high level cloudiness as high pressure at the surface and aloft reside over the forecast area. OUTLOOK...MVFR ceilings along with a chance of thunderstorms will be possible Thursday through Saturday.
-- End Changed Discussion --
&& .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...JGL NEAR TERM...AR SHORT TERM...JGL LONG TERM...Coniglio AVIATION...Hickman

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.