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Area Forecast Discussion
Issued by NWS Wilmington, OH
Issued by NWS Wilmington, OH
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390 FXUS61 KILN 162005 AFDILN AREA FORECAST DISCUSSION National Weather Service Wilmington OH 405 PM EDT Tue Jul 16 2024 .SYNOPSIS... Showers and thunderstorms are expected to move across the area tonight and Wednesday. After the passage of a cold front on Wednesday, drier and cooler conditions will move into the region. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... A few showers and thunderstorms have started to pop up over portions of southern Ohio and northeast Kentucky. Heat and instability should allow for additional scattered thunderstorms across the rest of the CWA, any of which could produce locally gusty winds, however latest indications are that the more widespread convection will occur after dark and into the overnight hours. This would be instigated by a disturbance across southern Illinois. The southern CWA is the most likely area to be affected by this, and there is a risk for heavy rainfall and localized flooding with this activity. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH WEDNESDAY NIGHT/... Shower and thunderstorm activity will likely be ongoing Wednesday morning, especially across southern and eastern portions of the CWA. Heavy rainfall and localized flooding will continue to be a threat from these storms. The chance of storms will persist until a cold front crosses the CWA. So will continue with a chance of showers and thunderstorms across much of the CWA until the front moves southeast during the late afternoon and evening. Drier air will start to move in behind the front, especially for Wednesday night. High temperatures Wednesday are expected to be in the lower to mid 80s, with low temperatures ranging from the upper 50s north to lower 60s south. && .LONG TERM /THURSDAY THROUGH TUESDAY/... A mid level trough axis will be digging east through the remainder of the Great Lakes, southeast Canada, and New England on Thursday. Behind this trough, surface high pressure will be building southeast into the region, bringing drier and cooler air. Highs will range from 75 to 80. For Thursday night, the surface high will settle into the Great Lakes and Ohio Valley. Mostly clear skies and light winds will result in lows in the 50s. Under mid level confluence, surface high pressure will continue to extend over the area Friday through Sunday. Temperatures will modify through this period with them trending closer to near normal by Sunday. As we head into the first part of next week, models agree that mid level troughing will develop across the central Plains into the middle Mississippi River Valley. This location, combined with the development of mid level ridging off the mid Atlantic and southeast U.S. coast, will increase moisture into the region as higher dewpoints and pwats pump northward from the Gulf of Mexico. Thus, shower and thunderstorm chances will increase during this period. It will be seasonably warm and humid with highs in the 80s and lows in the 60s. && .AVIATION /19Z TUESDAY THROUGH SUNDAY/... Area is dry early this afternoon. With daytime heating and afternoon instability, expect scattered thunderstorms to pop up. However, the more numerous convection now looks to occur later this evening and latest TAFs have been adjusted to reflect timing changes. Additional showers and thunderstorms are then expected during the daytime as a cold front approaches from the north. OUTLOOK...Thunderstorms possible into Wednesday afternoon. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...Flood Watch through Wednesday evening for OHZ054>056-062>065- 070>074-077>082-088. KY...Flood Watch through Wednesday evening for KYZ089>100. IN...Flood Watch through Wednesday evening for INZ066-073>075-080. && $$ SYNOPSIS...BPP NEAR TERM...BPP SHORT TERM...BPP LONG TERM...Hickman AVIATION...BPP