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Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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804 FXUS61 KRLX 071423 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 1023 AM EDT Sun Jul 7 2024 .SYNOPSIS... High pressure brings a dry finish to the weekend. Increasing southwesterly flow yields building heat and humidity for Monday and Tuesday. Rain chances return for mid-week and beyond. && .NEAR TERM /THROUGH TONIGHT/... As of 1015 AM Sunday... No major changes were made to the forecast. Still expect some valley fog again tonight, but not as widespread as last night. As of 645 AM Sunday... Forecast on track, with valley fog beginning to dissipate. As of 300 AM Sunday... High pressure cruising by to the northwest of the area will keep conditions tranquil through tonight. There will be a fair weather cumulus field atop the mixed layer this afternoon, and patchy stratocumulus atop the mixed layer at other times as well, including at night, with the mixed layer elevated. With not much of a subsidence inversion left, we might be able to stand up a shower or thundershower over the southern mountains this afternoon, if the cold front that crossed early Saturday morning is able to reverse gears and drift closer, along with its associated dew point gradient. The stratocu, and high cloud streaming across the central Appalachians, in upper level southwest flow streaming moisture northeastward from the Gulf including out of Beryl, could hinder fog formation early this morning, and again overnight tonight. Central guidance is consistent with temperatures in this benign pattern, with minimal spread. After a comfortably cool early morning, temperatures climb above normal for highs today, around 90 across much of the lowlands, but then settle back to around normal for lows tonight. Went a bit lower on lows tonight in valleys away from rivers given the mainly clear, calm conditions expected. && .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/... As of 311 AM Sunday... For the beginning of the week, High pressure remains overhead and across the Appalachians, from the Deep South up through New England. A cold front will be traversing the Midwest and a stationary front will be to our east. Monday and Tuesday certainly look to be the hottest days of the week too. High temperatures across the lowlands will be in the lower to mid 90s and dew points will rise into the 70s again with southwest to southerly flow aloft taking over. That said, heat index values could approach the upper 90s to lower 100s each afternoon, which means a couple heat advisories could be on the horizon this week. After a dry weekend, chances for showers and thunderstorms return Monday afternoon along the mountains and our eastern periphery. More chances will occur Tuesday with a front which will approach from the west. && .LONG TERM /WEDNESDAY THROUGH SATURDAY/... As of 311 AM Sunday... Chances for showers and thunderstorms remain into Wednesday with the front which will cross the area and then retreat back west as warm front. The GFS and the NAM both show precipitable water values upwards of 2.00" inches across the area. Eyeing the remnants of Tropical Storm Beryl which will move up the Mississippi River Valley and into the Midwest/Great Lakes this week as an extratropical, cold-core storm. Models are showing it grazing our area Thursday, but ultimately passing to our north over Ohio and Michigan. That said, opted to keep chance PoPs. Temperatures look to remain above normal through the week with the upper 80s and a few lower 90s being common in the lowlands through the week. && .AVIATION /15Z SUNDAY THROUGH THURSDAY/... As of 645 AM Sunday... High pressure continues to promote tranquil weather with light flow surface and aloft. There is likely to be an afternoon cumulus field, as well as patchy stratocumulus this morning and tonight. Stratocu tonight may lower and form MVFR ceilings in the mountains, affecting EKN and/or BKW. Otherwise, the mainly clear, calm conditions will again allow for valley fog overnight tonight, with IFR to VLIFR dense fog most likely at EKN, and MVFR mist most likely at CRW, CKB and PKB. High thin cloud is likely to keep valley fog thinner across southeast portions of the area. The patchy stratocu may further complicate the overnight fog forecast tonight. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 12Z MONDAY... FORECAST CONFIDENCE: Medium to high. ALTERNATE SCENARIOS: Timing and extent of dense fog development overnight tonight could vary from the forecast, owing in part to high cloud southeast, and patchy 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 12 13 14 15 16 17 18 19 20 21 22 23 EDT 1HRLY 08 09 10 11 12 13 14 15 16 17 18 19 CRW CONSISTENCY H H H H H H H H H H H H 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 M M H H H H H H H H H H PKB CONSISTENCY L H H H H H H H H H H H CKB CONSISTENCY L H H H H H H H H H H H AFTER 12Z MONDAY... Brief IFR possible in and near thunderstorms Wednesday. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...FK/TRM/LTC NEAR TERM...FK/TRM SHORT TERM...LTC LONG TERM...LTC AVIATION...TRM