Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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860 FXUS61 KRLX 220945 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 445 AM EST Sat Nov 22 2025 .SYNOPSIS... Rain ends today, dry through the weekend. A low pressure system tracks into the Great Lakes Tuesday into Wednesday bringing rain, followed by a significantly colder air mass for Thanksgiving. && .NEAR TERM /THROUGH TONIGHT/... As of 120 AM Saturday... A quasi-stationary boundary remains draped across the forecast area early this morning, maintaining widespread low clouds and areas of light rain or drizzle. This boundary is expected to begin shifting slowly southeastward over the next several hours, exiting the forecast area shortly after daybreak. As the boundary departs, large-scale lift will diminish, causing measurable precipitation to end from northwest to southeast. However, continued weak northwesterly flow at the surface, coupled with residual low-level moisture banked against the terrain, will likely keep drizzle and low clouds persisting along the windward slopes of the mountains through this afternoon. As high pressure begins to build in from the west later today, some clearing can be expected across our northwestern counties, but large scale improvement in cloud cover may take until this evening. Tonight, with high pressure settling overhead and skies clearing, radiational cooling will allow temperatures to drop into the 30s and 40s. This setup typically favors the formation of river valley fog, particularly given the recent rainfall, but this will be somewhat contingent on how quickly remnant low level cloudiness can clear. && .SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/... As of 120 AM Saturday... High pressure and dry weather will dominate this period as an upper-level split flow pattern develops. Sunday will feature the passage of a weak, moisture-starved reinforcing cold front. This feature is expected to cross the region dry, serving mainly to reinforce the seasonable air mass and perhaps generate a few transient clouds. Monday remains dry as the surface high shifts eastward. Temperatures will moderate, with highs climbing back into the 60s across the lowlands as return flow establishes ahead of the next system. && .LONG TERM /TUESDAY THROUGH FRIDAY/... As of 120 AM Saturday... The next significant chance for precipitation arrives early to mid-week. A pair of disturbances is progged to emerge from the Rockies, with consensus shifting toward the southern stream disturbance being the primary driver for local weather. Numerical guidance, excluding the operational GFS, suggests a lee low will form and maintain connection with upper-level support, tracking into the Upper Great Lakes by Tuesday afternoon. The atmospheric response to this low track includes the development of a 40-50KT low-level jet at H850, with its nose oriented across the Middle Ohio Valley by Tuesday morning. While instability looks to be limited to nil, limited much of a thunder threat, strong low-level mass convergence, moisture advection, and isentropic lift driven by the LLJ should be sufficient to produce widespread light rain starting Tuesday morning and continuing into Tuesday evening. A cold front will cross the region Tuesday night into Wednesday. While this feature will squeeze out additional precipitation, total rainfall amounts appear modest. In the wake of the front, parcel trajectories appear more westerly than previously forecast. These trajectories should keep the bulk of lake- enhanced moisture to the north of the forecast area during the day on Thanksgiving. The primary story for the latter half of the week will be the temperature change. Following the cold frontal passage Wednesday night, a significantly colder air mass will advect into the region. High temperatures on Thanksgiving Day are expected to struggle to exit the 40s, with lows dropping well into the 20s and 30s. Dry but chilly conditions will persist into Friday as high pressure settles over the region. && .AVIATION /09Z SATURDAY THROUGH WEDNESDAY/... As of 445 AM Saturday... A slow moving cold front will continue to sink slowly to the southeast this morning bringing rain and perhaps an embedded thunderstorm resulting in widespread flight restrictions along and behind it. This feature should clear the area shortly after daybreak this morning, but MVFR/IFR conditions will linger behind it for several hours either as stratus or moisture lifting into a stratocumulus deck. Will see flight conditions slowly improve from northwest to southeast this morning into this evening. KBKW will likely see restrictions persist longest due to upslope flow maintaining low clouds against the terrain. Depending how quickly skies clear this evening, valley fog may redevelop quickly. Winds will remain generally light favoring a northerly/northwesterly direction. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 12Z SUNDAY... FORECAST CONFIDENCE: Low this morning, medium this afternoon and evening. ALTERNATE SCENARIOS: Timing of improvement of flight conditions behind a departing cold front may vary. 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 SAT 11/22/25 UTC 1HRLY 09 10 11 12 13 14 15 16 17 18 19 20 EST 1HRLY 04 05 06 07 08 09 10 11 12 13 14 15 CRW CONSISTENCY H M H H H H H H H H H H HTS CONSISTENCY L M H H H H H H H H H H BKW CONSISTENCY M H H H H H H H H H H M EKN CONSISTENCY H H H H H H H H H H H M PKB CONSISTENCY M L L L L M H H H H H H CKB CONSISTENCY M H M H M H H H H H H H AFTER 12Z SUNDAY... IFR valley fog is possible Monday morning. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...JP NEAR TERM...JP SHORT TERM...JP LONG TERM...JP AVIATION...JP