Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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658 FXUS61 KRLX 221855 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 155 PM EST Sat Nov 22 2025 .SYNOPSIS... Building high pressure brings a return of dry weather for the balance of the weekend. A low pressure system tracks into the Great Lakes Tuesday into Wednesday bringing rain. Much colder for Thanksgiving. && .NEAR TERM /THROUGH SUNDAY/... As of 145 PM Saturday... Dry conditions continue to quickly build further south/east across the CWA this afternoon following the passage of a cold front and associated shortwave earlier today. A few isolated showers or patchy drizzle remains possible this afternoon along the windward slopes of the mountains given upslope flow, with dry conditions returning area-wide thereafter. Highs this afternoon will be near to slightly above normal, with 50s to low 60s across the lowlands, while upper 40s to mid 50s in the mountains, where some patchy fog remains possible. Some clearing will occur across the far northwest, while mostly cloudy skies continue southeast of the Ohio River. Dry weather continues overnight amid the potential for some fog development, primarily in the valleys, where skies are able to clear. This favors areas northwest of a general line from CRW to CKB, but overall confidence is somewhat low. Fog that does develop across the north may gradually mix out later tonight as low-level flow steadily increases in advance of a weak cold front approaching the northern CWA. Patchy fog is also possible across the mountains with stratus. Lows tonight will generally range from 30 to the low 40s, with the warmest temperatures being across the central/southern lowlands. The aforementioned cold front will gradually progress through the CWA on Sunday, providing a gradual wind shift to W/WNW and the potential for a highly isolated light shower or two across the far north/east. Partly to mostly cloudy skies early in the day will gradually transition to mostly sunny by late in the day. Did tweak wind gusts up a bit given some clearing during peak mixing hours, with breezy conditions expected across the lowlands (15-25 MPH), while gusty conditions across the mountains (25-40 MPH). Highs on Sunday will be nearly the same as today. && .SHORT TERM /SUNDAY NIGHT 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 /18Z SATURDAY THROUGH THURSDAY/... As of 205 PM Saturday... A few ISOLD showers or patchy drizzle is possible this afternoon in/near the mountains, potentially affecting BKW/EKN over the next hour or so, but not expecting any VSBY restrictions. Otherwise, widespread MVFR CIGs at present will gradually return to VFR across the far north (PKB), while potentially lingering further south through the evening (CKB/CRW/HTS), and even through much of the night at BKW/EKN, where brief IFR could even occur. Where clearing does occur this evening and tonight, some fog development is anticipated, but given some low clouds lingering around, confidence in MVFR/IFR fog is low, with the `greatest` potential being at CKB/HTS/PKB and perhaps CRW, while cloud cover at BKW/EKN should prevent fog development. Increased low-level flow later tonight may gradually mix out fog that has developed across northern locations as the night progresses. Otherwise, fog should quickly lift/dissipate by ~13Z. VFR then persists through the end of the TAF period save the potential for very brief MVFR stratocu at CKB/EKN late morning and early afternoon. Light northwest flow this afternoon will go light and variable or calm overnight. WSW to W flow develops Sunday morning into the afternoon. Gusts of 15-25 kts are possible at all terminals save HTS, with gusts of 25-35 kts possible in the mountains. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 18Z SUNDAY... FORECAST CONFIDENCE: Low tonight with fog/stratus, medium otherwise. ALTERNATE SCENARIOS: CIG restrictions today and tonight may vary from the forecast. Fog development tonight may be less than currently forecast. Brief MVFR is possible late Sunday morning into Sunday afternoon at CKB/EKN with stratocu. 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 18 19 20 21 22 23 00 01 02 03 04 05 EST 1HRLY 13 14 15 16 17 18 19 20 21 22 23 00 CRW CONSISTENCY H H H M H H H H H H H H HTS CONSISTENCY H H H H H H H M M M M M BKW CONSISTENCY M H M M M H L M H H M M EKN CONSISTENCY H H M H H H H H H M H H PKB CONSISTENCY H H H H H H H H M M M M CKB CONSISTENCY H H H H H H H H M M M M AFTER 18Z SUNDAY... IFR conditions are possible with valley fog Monday morning. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...GW NEAR TERM...GW SHORT TERM...JP LONG TERM...JP AVIATION...GW