Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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387 FXUS61 KRLX 080050 AFDRLX Area Forecast Discussion National Weather Service Charleston WV 850 PM EDT Fri Aug 7 2026 .WHAT HAS CHANGED... Updated the chances of precipitation to better represent current radar trends. && .KEY MESSAGES... - 1) Periods of showers and storms expected through Saturday, and again during the new work week. Localized instances of flash flooding remain possible during these times, with a possible uptick in the severe weather threat next week. && .DISCUSSION... KEY MESSAGE 1... Showers and thunderstorms firing up early this afternoon with the help of a weak mid/upper-level short wave trough moving through the area, and perhaps a subtle inverted surface trough, will continue becoming more numerous amid the afternoon heating and destabilization. With rich moisture content, evinced by PW values of 1.5 to 2.0 inches, and somewhat slow motion, localized flash flooding is possible. The short wave was one of a series along the southern edge of a long wave trough that kind of angles from central Canada south- southeastward to the Ohio Valley early this afternoon. While thunderstorms may tend to wane in intensity and coverage after sunset this evening, additional short waves/convective complexes keep the thunderstorm threat going through tonight and Saturday, with a diurnal uptick in coverage and intensity again Saturday afternoon. River valley fog is possible overnight tonight into Saturday morning, most likely, and most persistent Saturday morning where thunderstorms occur this afternoon or evening. The eastern U.S. trough position moves to or just off the east coast early next week, allowing a west to northwest mid/upper- level flow to take hold over the forecast area. After a brief reprieve in response to this Sunday into Monday as weak surface high pressure become established, and PW values drop into the 1.0-1.5 inch range, the Ad Nauseam of daily thunderstorms returns Monday afternoon or evening, as the surface high gives way to low level southwest flow beneath the mid/upper-level west to northwest flow increasing PW values back up into the 1.5 to 2.0 inch range. While localized flooding will again be a threat given relatively slow storm motion and high PW values, increased shear associated with the aforementioned flow pattern at times may increase the severe weather threat in the form of a damaging wind potential early next week. The Weather Prediction Center has the forecast area in a Marginal Risk for Excessive Rainfall through Saturday night, then after the break on Sunday, they place northern portions of the forecast area in a Marginal Risk Monday, and then throughout the forecast area next Tuesday, with a Slight Risk area nudging in from the west along the Ohio RIver. The orientation shift to west-northwest to east-southeast early in the next work week reflects the west-northwest mid/upper level flow. In a large expansion from the Middle Atlantic to the south- central Plains in the midday update, the Storm Prediction Center has the forecast area in a Marginal Risk for Severe Thunderstorms this afternoon into this evening, and then just general thunderstorm for the weekend. The Storm Prediction Center has introduced a 15% Severe Thunderstorm Risk in a west to east orientation north and northwest of the forecast area, for Monday, and allude to a damaging wind potential associated with a west to east front and west-noprthwest mid-level flow through Day 8, next Saturday. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... Some showers and thunderstorms will continue to cause restrictions this evening. Outside of the precipitation, expect VFR conditions. Scattered showers and thunderstorms remain possible later tonight. A light southerly wind will prevent fog in all but the deepest mountain valleys. Additional showers and thunderstorms could move through Saturday morning, gradually shifting southeastward into southeastern West Virginia and southwestern Virginia by Saturday afternoon. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 00Z SUNDAY... FORECAST CONFIDENCE: Medium. ALTERNATE SCENARIOS: Timing and intensity of showers and thunderstorms could vary. Timing, intensity, and location of fog tonight could 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 08/08/26 UTC 1HRLY 00 01 02 03 04 05 06 07 08 09 10 11 EDT 1HRLY 20 21 22 23 00 01 02 03 04 05 06 07 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 H H H H H H H L M L L H PKB CONSISTENCY H H H H H H H H H H H H CKB CONSISTENCY H H H H H H H H H H H H AFTER 00Z SUNDAY... Brief IFR restrictions are possible with daily showers and thunderstorms, primarily during the afternoon and evening hours. IFR is also possible in valley fog each night, especially in areas that received rainfall the previous day. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ DISCUSSION...RPY/TRM AVIATION...RPY