Area Forecast Discussion
Issued by NWS Jackson, KY

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268 FXUS63 KJKL 201909 AFDJKL AREA FORECAST DISCUSSION National Weather Service Jackson KY 309 PM EDT Sun Aug 20 2017 .SHORT TERM...(This evening through Monday night) Issued at 309 PM EDT SUN AUG 20 2017 Afternoon surface analysis shows an area of high pressure in SW PA and warm front lifting north across the Ohio Valley. We will remain under the control of rising heights and surface high pressure. That said, we have CU developing across the region and some higher level cirrus streaming by at times this afternoon. These CU will dissipate tonight and we will see another night of mostly clear skies. This will lead to the potential for more patchy to areas of fog toward the overnight hours. This will dissipate through the morning on Monday. Monday will be a interesting day given the solar eclipse. There remains some question on how much this will affect many things such as clouds and temperatures. We will be watching how a MCS develops across portions of the Midwest and this could certainly send a few high clouds south. Another issue will be how much CU develops before the eclipse, but still think there will be a few despite the potential affects. However, do not think this will lead to major issues for viewing the solar eclipse. Do think the eclipse will lower temperatures around 18Z and then it should warm up again following the eclipse. Did keep temperatures in the upper 80s for most locations, as the recovery may be delayed enough to impact peak heating. After the eclipse all eyes do turn to the upper level trough across the Upper Midwest. This will begin moving SE toward the Ohio Valley. We will probably see some more clouds given this, but do not think we will see any precipitation before the end of the period. Overall limited the fog more so given the potential for some cloud cover. .LONG TERM...(Tuesday through Sunday) Issued at 309 PM EDT SUN AUG 20 2017 Available shortly... && .AVIATION...(For the 18Z TAFS through 18Z Monday afternoon) ISSUED AT 146 PM EDT SUN AUG 20 2017 Surface analysis shows an area of high pressure parked across SW PA and a warm front lifting north across the Ohio Valley. We will remain under the influence of the surface high pressure and rising heights. This will lead to a typical summer like pattern across eastern KY, with a few higher clouds and a few low level CU at about 5 kft. The CU will dissipate this evening and mostly clear skies will prevail. This will be the catalyst for fog development once again tonight. Given the conditions last night will lean toward low MVFR VIS toward 06Z at SME/LOZ/SYM. This fog is expected to lift and burn off by around 13Z or so Monday morning. We could see some afternoon CU again Monday around 5 kft, but uncertain on how coverage will be affected by solar eclipse across eastern KY. Winds will remain light for the period. && .JKL WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SHORT TERM...DJ LONG TERM...GREIF AVIATION...DJ is the U.S. government's official web portal to all federal, state and local government web resources and services.