


Area Forecast Discussion
Issued by NWS Charleston, WV
Issued by NWS Charleston, WV
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-- Discussion containing changed information from previous version are highlighted. --042 FXUS61 KRLX 071104 AFDRLX AREA FORECAST DISCUSSION National Weather Service Charleston WV 704 AM EDT Mon Jul 7 2025 .SYNOPSIS... Remaining hot today, while humidity increases. Shower and storm chances return, especially along and northwest of the Ohio River. Storms possible daily for the rest of the week. && .NEAR TERM /THROUGH TONIGHT/... As of 215 AM Monday... Today will mark a regime change from hot and mostly dry to warm and more humid, with daily storm chances. At the same time, the remnants of Tropical Depression Chantal spin over Virginia and bring a few showers to our northern mountains mainly pre- dawn Monday, but most of that system`s precip will remain along and east of I-81. Otherwise, we look to have a dry morning across the region before some showers and storms may start to work into our Ohio counties in the early afternoon hours as a front pushes southeast across Ohio. The activity may become more robust and spread towards the Mid-Ohio Valley for the mid-afternoon into the evening as the front nears the CWA, and given PWAT values of 1.5-2.0 inches or more, we could definitely see some heavy rain rates. Ideally the storms look like they could have enough motion (potentially 20kts+) to avoid any water issues, but given nearly unidirectional flow from the surface up and Corfidi upshear vectors of 10kts or less, there is some concern for training or backbuilding. WPC has painted the MOV and southeast Ohio with a marginal risk of excessive rainfall, and that is sensible given expected storm coverage. Widespread ML CAPE values over 1500 J/kg seem likely tomorrow afternoon, so robust vertical growth can be expected. However, limited shear will limit severe potential, and SPC has kept us out of any outlook area for now. Activity looks to diminish after dark with the loss of daytime heating, but the warm and humid conditions will likely keep some modest CAPE (either surface-based or elevated) to maintain some shower and storm activity into the night. It should still get hot enough to combine with dew points in the low to possibly mid-70s to bring heat index values to the doorstep of Heat Advisory criteria, and some areas may crack a 100F heat index briefly. But it doesn`t look to be widespread and may only happen briefly, less than two hours at most spots where it does occur, so in coordination with the neighbors we opted to handle the heat with an SPS rather than an Advisory. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... As of 230 AM Monday... The front may sag a bit further south and southeast Monday night into Tuesday, likely winding up in our northwestern and northern counties. However, that slight advance is enough to shift the greatest POPs on Tuesday from southeast Ohio across the Ohio River and into the rest of the CWA. Same rules apply otherwise, with very juicy air and sufficient instability leading to scattered or numerous heavy showers and storms, some with locally very heavy rainfall. Instability may not be quite as strong as Monday, but the concern for training and backbuilding storms will remain. As a result, the marginal flooding risk for Tuesday covers almost the whole CWA. The front may remain stalled over or just north of the northern tier of our CWA on Wednesday, and scattered showers and storms will persist as a result. Chances may be a bit higher over the mountains and in the southern portion of the CWA, but there is enough uncertainty on storm placement on day 3 that the entire CWA is assessed as a marginal risk for excessive rainfall. && .LONG TERM /THURSDAY THROUGH SUNDAY/... As of 245 AM Monday... The POP forecast increases for Thursday as the current thinking is that a wave will move east along the front, tracking across the Midwest north of the Ohio River. While the wave is likely to be fairly weak, it would enhance storm coverage along the front and in the warm sector to the south. However, heading into later this week and the weekend, uncertainty increases on the details of the front`s placement and the effects of any waves that may move along the front. But through the balance of the long-term, we can expect to remain along or on the warm side of the front, keeping us locked into this warm and humid pattern, and thus we should anticipate a daily afternoon maximum in shower and storm activity, and an overnight minimum. The uncertainty at this lead time will generally keep the PM maxima below categorical POPs (75% or more), but each day will feature high-end chance to likely POPs. As mentioned in previous discussions, the front doesn`t seem likely to kick through the area until sometime early next week, beyond this 7-day forecast. && .AVIATION /12Z MONDAY THROUGH FRIDAY/...-- Changed Discussion --As of 130 AM Monday... Some mid-level and high clouds linger over the northeastern quadrant of the CWA this morning, but otherwise we are clear, and largely fog-free. Gentle to moderate SW-W`ly breezes will pick up in the mid to late-morning hours, and some scattered cumulus will likely develop. A few gusts up around 15 knots will be possible around the area. A front approaching across Ohio will bring some showers and storms to Southeast Ohio starting around 18z. They will likely push into the Mid-Ohio Valley and possibly north-central WV, but at this lead time opted to go mainly with VCSH and PROB30 groups rather than prevailing for TSRA activity. Did go with a TEMPO group for PKB, where the chances are highest. Showers and storms diminish after 00z, but a few likely linger later into the evening. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 12Z TUESDAY... FORECAST CONFIDENCE: High. ALTERNATE SCENARIOS: Timing and coverage of fog 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 MON 07/07/25 UTC 1HRLY 08 09 10 11 12 13 14 15 16 17 18 19 EDT 1HRLY 04 05 06 07 08 09 10 11 12 13 14 15 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 L M H H H H H H H 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 12Z TUESDAY... Brief periods of IFR conditions possible under heavy showers or thunderstorms, mainly during the afternoon and evening hours, each day this week.-- End Changed Discussion --&& .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && $$ SYNOPSIS...FK NEAR TERM...FK SHORT TERM...FK LONG TERM...FK AVIATION...FK