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Area Forecast Discussion · ILN

Cincinnati/Wilmington, Ohio

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1901 South State Route 134, Wilmington, OH 45177, United States of America

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Product header AFDILN·FXUS61 KILN 311724
Title
Area Forecast Discussion
Issued by
National Weather Service Wilmington OH
AWIPS ID
AFDILN
WMO heading
FXUS61 KILN 311724
Sequence
175

WHAT HAS CHANGED

No significant changes.

KEY MESSAGES

1) A weak mid level disturbance will bring some light rain to the region Sunday and early Monday. A stronger system will result in more widespread precipitation for the middle part of next week.

DISCUSSION

KEY MESSAGE 1) Surface high pressure will move east tonight ahead of a weak mid level s/w. This s/w will be undercutting a l/w ridge, which will hamper any deeper development of s/w and associated vorticity. Light and scattered rainfall with this system will end early Monday morning as the mean s/w axis exits to the easts during this time. The l/w ridge builds back in Mon night and early Tues, then gets shunted ewd during the day. This will allow swly flow over the Ohio Valley to take hold ahead of a potent l/w trough.

This l/w trough and/or cutoff low is all over the map for Tues night onward, leading to very low confidence in forecast going forward. Even though confidence is low on mass fields, they all support rain on Wed with deep sw flow being wrung out over the region. A continued chance of rain through the end of the week is also prudent given the divergence of upper level mass fields. While some chance of rain is expected through the period, it won`t be any washout or extended rainfall event after the more widespread rain expected Wednesday.

AVIATION

18Z SATURDAY THROUGH THURSDAY

A weak upper level disturbance will approach from the west tonight and early Sunday. As it does, mid and high level clouds will thicken and lower with VFR conditions will prevailing.

OUTLOOK...MVFR cigs possible Mon and Wednesday. MVFR vsbys possible Wednesday.

ILN WATCHES/WARNINGS/ADVISORIES

OH

None.

KY

None.

IN

None.

DISCUSSION...FranksAVIATION...Franks