462 FXUS61 KRLX 100622 AFDRLXAREA FORECAST DISCUSSION National Weather Service Charleston WV 222 AM EDT Fri Oct 10 2025
.SYNOPSIS... High pressure will provide dry and cool conditions through Saturday. The next (low) chance for precipitation arrives late in the weekend as a coastal low interacts with a system over the Great Lakes.
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.NEAR TERM /THROUGH TONIGHT/... As of 215 AM Friday...
Freeze Warnings and Frost Advisories remain in effect for the mountains and portions of southeast Ohio respectively, with some additional patchy frost possible bordering these advisories. Clear skies and light winds are allowing for strong radiational cooling, with temperatures dropping into the 30s. Some of the typically colder mountain valleys have already dipped below freezing.
Valley fog is already developing and is expected to become dense in protected river valleys by daybreak. Increasing southerly flow just above the surface should keep fog limited to the valleys and will also lead to a pronounced temperature difference between the ridges and valleys as the ridges warm into daybreak.
After any morning fog burns off, today will be clear and pleasant with afternoon high temperatures reaching the lower 70s across the lowlands. We will mix into a substantially drier layer aloft (rooted around H850) during the afternoon, resulting in slightly lower dew points than central guidance suggests, although fire weather concerns will remain minimal with generally light winds and the forest floor still sheltered by (thinning) leaves across much of the lower elevations. Dry conditions continue tonight with river valley fog developing once again.
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.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... As of 215 AM Friday...
High pressure remains in control of the weather pattern on Saturday, resulting in another dry and mild day with highs in the low to mid 70s. Clouds will gradually increase Saturday afternoon and night as an upper-level trough approaches from the Great Lakes.
Confidence in the forecast decreases late in the weekend. A complex interaction is expected between the northern stream trough over the Great Lakes and a developing coastal low pressure system moving up the eastern seaboard. There remains considerable model variance on the phasing of these two systems. At present, the most likely outcome is for the majority of the precipitation to remain east and north of the forecast area. However, some moisture may wrap around the coastal low, bringing a slight chance for light rain showers to the eastern mountains, primarily across Pocahontas and Taylor County on Sunday. Rainfall amounts, if any, are expected to be light, with less than a 40 percent chance for even a tenth of an inch for these locations.
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.LONG TERM /MONDAY THROUGH THURSDAY/... As of 215 AM Friday...
The long-term period is characterized by a shift to a much quieter and warmer pattern. The weekend storm systems will exit to the northeast early Monday, followed by the rapid development of a strong upper-level ridge over the central United States. This ridge will dominate the weather pattern through the middle of the week, promoting dry conditions and a significant warming trend.
Afternoon high temperatures will climb into the mid to upper 70s for Monday and Tuesday, which is 5 to 10 degrees above normal for mid- October. Overnight lows will also be mild, generally in the upper 40s to low 50s. The extended outlook from the Climate Prediction Center supports the continuation of warmer and drier than normal conditions through the end of the period.
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.AVIATION /06Z FRIDAY THROUGH TUESDAY/... As of 215 AM Friday...
The primary aviation concern will be dense valley fog developing this morning leading to IFR or LIFR conditions, especially at EKN, PKB and possibly CRW. Some patchy fog is possible at the other terminals (except BKW where download flow should keep any fog at bay), but confidence is lower for significant restrictions. Any fog will dissipate by 13Z, giving way to clear skies. Winds will be light and variable early this morning, becoming southeasterly around 5 to 10 kts during the day.
FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 06Z SATURDAY...
FORECAST CONFIDENCE: High
ALTERNATE SCENARIOS: Coverage and timing of dissipation of fog may vary this morning.
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 FRI 10/10/25 UTC 1HRLY 06 07 08 09 10 11 12 13 14 15 16 17 EDT 1HRLY 02 03 04 05 06 07 08 09 10 11 12 13 CRW CONSISTENCY H H M L L L L H H H H H HTS CONSISTENCY H H M L L L L H H H H H BKW CONSISTENCY H H H H H H H H H H H H EKN CONSISTENCY H M L L L L L L H H H H PKB CONSISTENCY H H L L L L L H H H H H CKB CONSISTENCY H H M L L L L H H H H H
AFTER 06Z SATURDAY... At least patchy IFR valley fog is possible each morning.
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.RLX WATCHES/WARNINGS/ADVISORIES... WV...Frost Advisory until 9 AM EDT this morning for WVZ039-040-516- 518>522. Freeze Warning until 9 AM EDT this morning for WVZ523>526. OH...Frost Advisory until 9 AM EDT this morning for OHZ066. KY...None. VA...None.
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SYNOPSIS...JP NEAR TERM...JP SHORT TERM...JP LONG TERM...JP AVIATION...JP
NWS RLX Office Area Forecast Discussion