Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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146 FXUS61 KRLX 062342 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 642 PM EST Sat Dec 6 2025 .SYNOPSIS... A few rain or snow showers Sunday afternoon, with a more widespread wintry mix changing to all snow Sunday night into Monday. A warmer, breezier system impacts the region midweek. && .NEAR TERM /THROUGH SUNDAY/... As of 1245 PM Saturday... Mostly cloudy conditions are noted over the area, with a few breaks in the various levels of cloud decks. After morning low stratus cleared out, we maintained a broken altostratus deck, and now lower clouds are starting to work back into the area from the west. We should stay on the dry side through tonight, but a weak shortwave crossing Ohio and PA late this afternoon or this evening could bring some patchy drizzle or freezing drizzle to northern WV, depending on temperature. Some light snow is possible in a few spots if clouds can get over the -10C level, but forecast soundings mainly had the saturated layer staying below that. The shallowest of shortwaves will slide across the eastern Great Lakes and central Appalachians Sunday afternoon, which could bring some isolated and temperature-dependent rain/snow showers to the CWA. However, the better moisture availability and forcing with this feature looks to stay north of our area, so Sunday afternoon`s precip looks to be limited in scope. Forecast highs in the low to mid-40s would indicate that any lower elevation precip is likely to be rain, while a mix or all snow is possible in higher terrain. && .SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/... As of 100 PM Saturday... What the Sunday afternoon clipper disturbance lacks in moisture across our area, it will partially make up for with a decent shot of cold air surging into the CWA behind its cold front Sunday night into Monday. Lows Monday morning will be mainly in the 20s, with some teens in the mountains. Highs on Monday won`t budge much as N`ly winds persist with the cold advection, only rising to the low to mid-30s in lower elevations. A second weak disturbance will follow the first one on a more southerly track Sunday night into Monday, as a broad and weak low develops along the Gulf Coast and then transits eastward and off the Southeast Coast. As it does so, the upper- level trough is forecast to draw some moisture north towards the central Appalachians, bringing some rain and snow showers later Sunday evening that transition to all snow overnight into Monday morning. This second system will bring more widespread precip than the Sunday afternoon disturbance, but likely mainly south of the Ohio River. Lowlands of central and southern WV are forecast to see mainly an inch, with up to around 2 inches possible for the southern WV mountains down into our VA counties. As the base of the trough slides east of the CWA Monday night, any lingering mountain snow showers Monday evening should quickly end. High pressure sliding east of our area will combine with disturbances pushing into the Upper Midwest and Great Lakes on Tuesday to bring increasing S-SW`ly breezes and highs surging back into the 40s for most of the lowlands and 30s in the mountains. Some patches of sunshine will also be possible on Tuesday. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... As of 130 PM Saturday... A more potent clipper system is forecast to swing from the northern Plains across the Great Lakes Wednesday and Wednesday night, pushing a cold front across the CWA in the evening or overnight hours. Ahead of the cold front, warm advection will continue on gusty SW`ly winds, with highs ranging from the mid-30s to lower 40s in the mountains to the mid-40s to near 50 degrees in lower elevations. As a result, when precip starts to push into the area around midday or early afternoon on Wednesday, it should start off as rain for everywhere except the mountains. A parade of disturbances may then impact the CWA through the end of the week, but with significant model uncertainty on the track and timing of the features, and as a result a wide spread on potential temperature scenarios. While it seems likely that there will be a significant cool-down between Thursday and Saturday of next week, how fast and how cold remain unclear. For example, for Charleston`s high on Friday, the NBM probabilistic data has an 10-degree 25th/75th percentile spread, with a 20 degree 10th/90th spread. That is quite impressive and is a good illustrator of the uncertainty. All of that is to say that the precip type forecast for later next week will be highly dependent on the speed and severity of any dropping temperatures. So take the p-type forecast later next week with at least a few grains of salt and expect potentially significant changes as we get closer and the models hopefully come into better agreement and lock onto a clear solution one way or the other. && .AVIATION /00Z SUNDAY THROUGH THURSDAY/... As of 640 PM Saturday... Stratocumulus was lowering back down into MVFR this evening, and this trend will continue tonight, before reversing overnight into Monday, as ceilings rise back above MVFR from south to north. This sets up a VFR Monday afternoon, except perhaps for the afternoon return of MVFR stratocu at PKB and CKB, as a cold front arrives. Visibility is not expected to be impactful through Monday. Light and variable to no surface flow tonight will become light south to southwest again on Monday. The cold front may cross PKB and CKB and switch the wind to light northwest there late Monday afternoon. Light west to southwest flow aloft tonight will become light to moderate west Sunday morning, and then light northwest Sunday afternoon. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 00Z MONDAY... FORECAST CONFIDENCE: High. ALTERNATE SCENARIOS: Timing of transition from VFR to MVFR this evening, and then back to VFR overnight into Monday morning, could vary by a couple of hours, even longer if morning MVFR stratocu hangs on longer on Monday. Brief dip of visibility into MVFR cannot be entirely ruled out tonight. 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 EST 1HRLY 16 17 18 19 20 21 22 23 00 01 02 03 CRW CONSISTENCY H H H H H H H H L H M M HTS CONSISTENCY H H H H H M H M M H M H BKW CONSISTENCY H H M H H H H H H H H H EKN CONSISTENCY H H M H H H H H H H H H PKB CONSISTENCY H H H H H L L H H H H H CKB CONSISTENCY M H H H H H H H H H H H AFTER 00Z MONDAY... IFR possible in rain/snow Sunday night into Monday morning, and then again Wednesday night and Thursday. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...FK NEAR TERM...FK SHORT TERM...FK LONG TERM...FK AVIATION...TRM