


Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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686 FXUS61 KRLX 010636 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 236 AM EDT Tue Jul 1 2025 .SYNOPSIS... Thunderstorms through today as a cold front crosses by this evening. Some storms could be strong to severe, along with the potential for localized flooding. Dry Wednesday onward. && .NEAR TERM /THROUGH TONIGHT/... As of 130 AM Tuesday... Cold frontal passage today from the early afternoon through the late afternoon into early evening. The front may get hung up along the mountains into the evening, however it should rather weaken a bit by then and just promote showers which could be heavy at times and a few storms, but below severe criteria. Hi-res models have a fairly disorganized broken line coming through as early as 15Z and traversing from west to east and getting to the mountains by 21Z. Thereafter it falls apart somewhat across our area by then. There are only a few models that have the feature moving slightly slower such as the EURO and SREF. Regardless, as always lingering showers across the mountains will be the likely setup going into the evening, but thunderstorm potential should be at a minimum. Severe indices look good with nearly over 2500 J/g of MU CAPE, almost 30kts of bulk shear and sufficient DCAPE for downbursts that could cause damaging wind. The freezing levels are high, over 14k ft, and with not a whole lot of instability for stronger updrafts and weak upper level support storms may not be able to promote large hail. With helicity and high LCLs the tornado threat is almost nil. SPC has us in a marginal threat for West Virginian and our VA counties so some isolated storms may become strong to severe. PWATs are still at around 2 inches along with a well saturated column in the low to mid levels along with lapse rates above the environmental rate which all means that heavy downpours are a realistic thing once again. WPC does have us in a slight risk for most of the area for excessive rainfall, so localized flooding will be a threat if storms train or move slow, although steering flow will be sufficient to move most storms and showers through at around 30Kts toward the northeast. Therefore low lying or flood prone areas will be at the most risk. After the upper level trough supporting the cold front exits east by Wednesday morning high pressure builds in from the southwest and supports fair weather across the area. Temperatures will drop to below seasonable for once today as cold frontal passage takes place and will stay right around seasonable for the overnight. && .SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/... As of 235 AM Tuesday... Mostly dry weather returns to the forecast area on Wednesday in the wake of the cold front mentioned in the near term period. However, a few showers and afternoon storms could sprout along the spine of the Appalachians as weak shortwave energy swings in along the westward flank of a departing upper level trough. Better clearing takes shape on Thursday as an encroaching ridge begins to obtain influence over the area. However, there could be some very light showers attached to a weak cold front sinking southward from the Great Lakes region. Main implications from this frontal passage will be lowering of dew points and overall mugginess that has festered over the CWA for several weeks now. Daytime temperatures will hover around normal for this time of year to start off the short term period, but will gradually rise for the end of the work week as the aforementioned ridge builds in from the west. While we have a brief interlude from the humidity on Thursday, forecast projections have the heat building quickly back in for the Fourth of July. && .LONG TERM /FRIDAY THROUGH MONDAY/... As of 235 AM Tuesday... Strong upper level ridging first hinted at in the short term will take center stage over the Central Appalachians for the Independence Day holiday weekend. Building heat and humidity in response to the ridge will once again impose potential for heat risks for Friday onward until the ridge finally breaks down at the start of next week. Generally expecting dry weather for the start of the weekend, then becoming more active late in the period as diurnally driven showers and storms undercut the ridge amid hot and muggy conditions. && .AVIATION /06Z TUESDAY THROUGH SATURDAY/... As of 140 AM Tuesday... Just a little bit of valley fog and post rain fog at a few sites, mainly CRW/EKN and then should dissipate by 12Z. Thereafter, a cold front approaches from the west and promotes shower and thunderstorm chances while passing through the afternoon and into the evening. By early evening the sites should be out of the activity and then go to VFR by then. Otherwise some periods of IFR VIS and MVFR CIGs under shower and storm potential will be the main theme today. Things should be moving relatively quickly with 30kts steering flow and cells will be moving northeast with most activity likely between 15Z to 21Z. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 06Z WEDNESDAY... FORECAST CONFIDENCE: Medium. ALTERNATE SCENARIOS: Timing of shower/thunderstorm activity may vary from the forecast. Fog timing, coverage, and intensity this morning may vary from the forecast. 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 TUE 07/01/25 UTC 1HRLY 03 04 05 06 07 08 09 10 11 12 13 14 EDT 1HRLY 23 00 01 02 03 04 05 06 07 08 09 10 CRW CONSISTENCY H H H H M M M H H M M H HTS CONSISTENCY H H H H H H H H H M M H BKW CONSISTENCY H H H H H H H H H H H H EKN CONSISTENCY L L L L L L L M M M M H PKB CONSISTENCY H H H H H H H H H H H H CKB CONSISTENCY H H H H H H M H H H H H AFTER 06Z WEDNESDAY... IFR conditions possible in thunderstorms through early Tuesday night, and in valley fog Wednesday/Thursday/Friday mornings. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...MEK/JZ NEAR TERM...JZ SHORT TERM...MEK LONG TERM...MEK AVIATION...JZ