Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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623 FXUS61 KRLX 212331 AFDRLX Area Forecast Discussion National Weather Service Charleston WV 731 PM EDT Fri Aug 21 2026 .WHAT HAS CHANGED... 728 PM Update... ~00z aviation discussion update. 229 PM Update... Forecast remains on track with previous issuances. 18Z Aviation forecast discussion update. && .KEY MESSAGES... 1) Diurnally driven showers and storms are anticipated to spawn over the next few hours across the eastern half of the forecast area today. 2) Active weather extends into the start of the weekend as a cold front drives through the Central Appalachians by Saturday night. Thunderstorm development preceding the frontal passage may foster damaging wind gusts and hail. 3) High pressure building in for the start of the new work week will yield a stretch of dry weather and below normal temperatures across parts of the Ohio Valley. && .DISCUSSION... KEY MESSAGE 1... Radar trends thus far today have kept the bulk of activity associated with a southern stream disturbance east of the Appalachians. However, additional development in Kentucky at the time of writing within blossoming cumulus signals destabilization that bears a similar environment to parts of the central lowlands. Hi-res modeling fires up a line of diurnally driven storms along the foothills and mountains for this afternoon and fading off after sunset. Leftover moisture will once again promote locally dense fog and low level stratus late tonight into Saturday morning. KEY MESSAGE 2... Amplification of an upper level trough, coupled with shortwave energy, will drive a cold front through the Ohio Valley for the start of the weekend. Daytime heating will lead to typical summertime destabilization ahead of the front, prompting blossoming cumulus fields and scattered shower and storm development. Storm initiation preceding FROPA may begin as early as 2 PM across the Ohio River Valley and also along the higher terrain with assistance from upslope lift. Radar will then remain active through the course of the afternoon and evening with the eastward push of the front, currently aiming for an arrival time into the forecast area by late Saturday night. One last line of showers and storms aligned along the boundary presses through overnight into Sunday morning, lingering longest along the higher terrain for the end of the weekend. KEY MESSAGE 3... While some lingering precipitation along the northeast WV mountains may be ongoing for the start of the day Sunday, a multi-day dry weather pattern is progged to arrive for the end of the weekend/start of next week under the guise of building high pressure. This stretch of dry weather will aid in soil recovery in the wake of what has been a very wet month across the bulk of the forecast area. Temperatures are also anticipated to fall below climatological norms in the wake of the frontal passage, with daytime highs reaching the 60s along the mountains and 70s to low 80s across the lowlands. Overnight lows will also cool down into the 40s and 50s during this time. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... Scattered, nearly stationary showers and thunderstorms have spawned across the mountains, but will be gradually tapering off the next 1 to 2 hours. Have allowed VCTS and TEMPO groups at BKW and EKN as the chances are higher for impacts at these sites. Dense valley fog and some low stratus along the mountains is expected to occur tonight, especially where rainfall occurred today. IFR or lower conditions are expected with any fog or low clouds. VFR conditions will resume by ~13-14z Saturday. Winds will be light to calm for most locations tonight. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 00Z SUNDAY... FORECAST CONFIDENCE: HIGH ALTERNATE SCENARIOS: Timing and location of showers and thunderstorms may vary from the forecast. Restrictions from fog and low stratus may vary tonight and Saturday morning. 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. UTC 1HRLY 21 22 23 00 01 02 03 04 05 06 07 08 EDT 1HRLY 17 18 19 20 21 22 23 00 01 02 03 04 CRW CONSISTENCY H H H H H H M M L M M M HTS CONSISTENCY H H H H H H H H H M M M BKW CONSISTENCY M H H H H H M L L L M L EKN CONSISTENCY H H H H H H H H L H L L PKB CONSISTENCY H H H H H H H H H M M M CKB CONSISTENCY H H H H H H H H H M H M AFTER 00Z SUNDAY... IFR conditions possible in showers and thunderstorms Saturday night. Possibly again Sunday afternoon/evening. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ DISCUSSION...05 AVIATION...LTC