Area Forecast Discussion
Issued by NWS Wilmington, OH
Issued by NWS Wilmington, OH
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038 FXUS61 KILN 091758 AFDILN AREA FORECAST DISCUSSION National Weather Service Wilmington OH 158 PM EDT Sun Jun 9 2024 .SYNOPSIS... High pressure and a drier airmass will build into the region today, leading to near normal temperatures. A cooler airmass will briefly settle into the Ohio Valley on Monday before warmer temperatures return through the end of the week. && .NEAR TERM /UNTIL 7 PM THIS EVENING/... An isolated sprinkle cannot be ruled out in a few areas later today, however in general most locations will stay dry and went with a dry forecast. Went close to the blend for high temperatures today with highs in the upper 70s to around 80 degrees. Winds will pick up some for the afternoon into the early evening hours with wind gusts around 20 to 25 mph in spots. Cloud cover will be variable. There are more clouds across the southeast closer to the front. In addition, there will be some cu development and also mid and high clouds from a system southwest of the region. && .SHORT TERM /7 PM THIS EVENING THROUGH 6 PM MONDAY/... Mid level short wave energy will drop down across the western Great Lakes tonight and pivot across the upper Ohio Valley through the day on Monday. This will be accompanied by a surface trough axis, but deeper moisture remains somewhat limited so expect the net effect will mainly be just an increase in clouds on Monday. This will also allow for a cooler airmass to settle into the area for Monday with daytime highs only in the upper 60s to lower 70s. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... Chilly start to the extended period with most locations reaching the upper 40s Tuesday morning as high pressure persists over the Ohio Valley. Low-level flow becomes more variable during the afternoon with the high pressure meandering around the region. This results in temperatures 5 to 10 degrees warmer than Monday. High pressure shifts to the east Wednesday, once again leading to more favorable warming conditions back to above normal. No rainfall is expected for through midweek. Uncertainty begins to increase Thursday/Friday as the details remain unclear regarding the shortwave trough digging into the Midwest/Great Lakes. Both ECMWF and GFS ensembles continue to waffle with the depth of the trough axis, suggesting lower confidence for temperature and rainfall forecasts on those days. Both ensemble systems still have the ridge axis eventually shifting eastward during the weekend so the trough may only delay the onset of the warmer conditions to early next week. The other factor that will need to be monitored is the potential for tropical moisture sourced from a possible disturbance in the Gulf of Mexico. The ridge axis may shift far enough to the east late in the weekend to allow for this moisture to drift northward. So while temperatures are likely to be above normal, the details of any particular heat risk on any particular day may have to wait until these details become more clear. Given the current confidence of the trough at least passing near the region, will continue the mention of low PoPs Thursday night into Friday. At this time, severe weather is not expected. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... Cu will be present along with high clouds today. Wind gusts around 20 knots will be possible at times this afternoon into the early evening hours. VFR clouds are expected overnight as a disturbance works through. There will also be the potential for MVFR clouds during the day on Monday at some of the area TAF sites. There is not a lot of moisture and therefore went with dry conditions at the TAF sites. OUTLOOK...MVFR ceilings possible Monday and Monday night. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...JGL NEAR TERM... SHORT TERM...JGL LONG TERM...McGinnis AVIATION...