Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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925 FXUS61 KRLX 200157 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 957 PM EDT Tue Aug 19 2025 .SYNOPSIS... A cold front pushes through Wednesday and Wednesday night. Much stronger cold front arrives for the weekend, dropping temperatures significantly. && .NEAR TERM /THROUGH WEDNESDAY/... As of 955 PM Tuesday... A convective line, associated with a passing cold front, will continue to dissipate as it moves west of the OH River before midnight. Rest of forecast remains on track. Isolated showers or storms remains on the forecast for the rest of tonight. As of 150 PM Tuesday... After a hot and fairly humid day today, a cold front currently to our west and northwest will approach the area tonight. Some showers and lingering storms may move into Southeast Ohio and the Mid-Ohio Valley during the evening and early overnight hours. Much of the activity may fizzle as the night wears on, but a few showers may keep going with the weak forcing of the front. SPC does maintain the most northwestern sliver of our CWA under a Marginal risk for severe storms, with the only real risk being damaging winds from water-loaded downdrafts from any stronger storms that can grow sufficiently high. The best chance for strong storms in our CWA will be if they arrive early, around sunset, while they can still feed on some of the daytime heating. A later arrival would likely preclude much if any chance of severe storms. While winds tonight will be light and skies mostly clear, there should be just enough synoptic flow from the south and southwest to keep fog formation to a minimum. After an early morning minimum in activity, showers and thunderstorms will blossom late tomorrow morning into the afternoon hours as daytime heating combines with the frontal forcing. With model PWAT values in the 1.5-2.0 inch range, some locally very heavy rain rates are possible, and WPC does have us under a Marginal risk of flash flooding. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... As of 215 PM Tuesday... The front should be mostly clear of the CWA by Wednesday evening, though some showers may linger till around midnight before activity dissipates. There should be enough N`ly flow behind the front to prevent fog formation in most valleys, despite the anticipated earlier rainfall. Highs on Thursday behind the front should be near normal, mainly low to mid-80s at lower elevations, and upper 60s to upper 70s in the mountains. There should be enough lingering moisture and perhaps a bit of forcing from a weak trough extending west from Hurricane Erin offshore to promote more showers and storms, mainly in the eastern part of the CWA. Weak high pressure and clear skies may allow for some decent amount of fog Thursday night. Abundant sunshine on Friday should allow for modestly warmer temperatures compared to Thursday, with just a stray shower possible in the mountains that afternoon. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... As of 230 PM Monday... No major changes in the long-term forecast thinking. A strong cold front will push through Saturday night or Sunday, providing a significant change in temperatures for at least the beginning of the next work week. There is some disagreement on the timing of the front between the models, but the models agree in the significantly cooler temperatures and much lower dew points behind the front. Indeed, while it`s just outside the period for this forecast, probabilistic NBM data was showing well over 50% chance for lows under 60F Tuesday morning. && .AVIATION /02Z WEDNESDAY THROUGH SUNDAY/... As of 730 PM Tuesday... The period starts with widespread VFR conditions ahead of an approaching cold front. Strong convection is evident on radar imagery moving southeast across north-central KY. This trajectory keeps convection outside our CWA this evening. However, will continue monitoring convection along the front. Guidance does not show much in terms of convection over our terminals this evening. So, kept conditions dry. Kept reasoning from previous shift on convection expected Wednesday afternoon. Kept PROB30 groups with thunderstorms roughly from 12Z to 18Z. A puff in the wind should be enough to prevent fog formation tonight. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 00Z THURSDAY... FORECAST CONFIDENCE: High. ALTERNATE SCENARIOS: Timing and extent of showers tomorrow may vary from the forecast. EXPERIMENTAL TABLE OF FLIGHT CATEGORY OBJECTIVELY SHOWS CONSISTENCY OF WFO FORECAST TO AVAILABLE MODEL INFORMATION: H = HIGH: TAF CONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL. M = MEDIUM: TAF HAS VARYING LEVEL OF CONSISTENCY WITH MODELS. L = LOW: TAF INCONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL. DATE WED 08/20/25 UTC 1HRLY 00 01 02 03 04 05 06 07 08 09 10 11 EDT 1HRLY 20 21 22 23 00 01 02 03 04 05 06 07 CRW CONSISTENCY H H H H H H H H H L L L HTS CONSISTENCY H H H H H H H H H H H H BKW CONSISTENCY H H H H H H H H H H H H EKN CONSISTENCY H H H H H H H M L L L L PKB CONSISTENCY H H H H H H H H H H H M CKB CONSISTENCY H H H H H H H H H H H H AFTER 00Z THURSDAY... Brief IFR conditions possible in showers and thunderstorms Wednesday night. IFR possible in river valley fog most mornings the rest of the work week. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...FK NEAR TERM...FK/ARJ SHORT TERM...FK LONG TERM...FK AVIATION...FK/ARJ