Area Forecast Discussion
Issued by NWS Wakefield, VA
Issued by NWS Wakefield, VA
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680 FXUS61 KAKQ 181926 AFDAKQ AREA FORECAST DISCUSSION National Weather Service Wakefield VA 326 PM EDT Fri Sep 18 2026 .WHAT HAS CHANGED... Marginal Risk of excessive rainfall Monday and Slight Risk of excessive rainfall Tuesday. && .KEY MESSAGES... 1) Near to above average temperatures through the weekend and primarily dry conditions. 2) A gradual pattern change develops during the early to middle portion of next week with increased rain chances and cooler temperatures. && .DISCUSSION... As of 325 PM EDT Friday... KEY MESSAGE 1...Near to above average temperatures through the weekend and primarily dry conditions. GOES water vapor channels continue to depict a large upper ridge over the lower Mississippi Valley. However, it has been suppressed by a trough digging across New England and Atlantic Canada. This is pushing a cold front S across the southern Mid- Atlantic. Temperatures range from the lower 80s N to around 90F S under a partly sunny sky. Isolated to scattered showers and a few tstms are developing this afternoon. The best coverage is over the VA Piedmont, with isolated activity over the Eastern Shore. The front will be slow to push S tonight, so some lingering showers are possible across southern VA and interior NE NC. Otherwise, partly to occasionally mostly cloudy with lows in the mid 60s to lower 70s. Mostly dry with more seasonally temperatures on Saturday behind the front. However, some light showers are possible over the lower Eastern Shore and western shore of the Ches. Bay with onshore flow of relatively warm water. High temperatures range from the upper 70s/around 80F at the coast to the lower 80s inland. The front likely lifts back to the N as a warm front Sunday. Still mainly dry Sunday with only slight chc PoPs NW. Warmer with high temperatures in the lower 80s at the coast to the mid/upper 80s inland, after morning lows in the mid 60s to lower 70s. KEY MESSAGE 2...A gradual pattern change develops during the early to middle portion of next week with increased rain chances and cooler temperatures. An anomalous upper ridge builds toward Hudson Bay by Monday and becomes centered in vicinity of Hudson Bay through at least the middle of next week. Meanwhile, an upper trough slides under the ridge into the Great Lakes region early-mid next week, before translating toward the East Coast later in the week. At the surface, strong high pressure builds across ON/QB Monday and Tuesday, with 18/12z ensemble means showing nearly 1035mb. This high then shifts SE toward Atlantic Canada and northern New England by midweek and potentially building to nearly 1038mb per ensemble means. The initial change in the pattern will push a cold front S through the region Monday. Monday will be more of a transitional day with high temperatures around 80F N to the upper 80s S. There is a chc of showers/tstms with the frontal passage, with the best chc of tstms S. Onshore flow with increased rain chances are expected by Tuesday/Wednesday lingering into Thursday. The local area is covered by a Marginal ERO Monday, and then up to a Slight ERO by Tuesday as an ENE LLJ strengthens and combines with increased moisture off the Atlantic. Breezy to windy conditions are possible along the coast with northeasterly flow. Not as warm Tuesday, and potentially cooler Wednesday/Thursday. However, there will be some limitation as to how cool temperatures can get along the coast as SSTs remain rather warm. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... As of 205 PM EDT Friday... A cold front was dropping S across the region as of 18z. VFR with a light northerly wind. Scattered showers and a few tstms were developing, primarily across the VA Piedmont and the Eastern Shore. SBY has the best potential (20-40%) for showers/tstms through the aftn and early evening and a PROB30 group has been added for thunder from 19-23z. Otherwise, the bulk of the shower/tstm activity should remain W/SW of a line from RIC to ECG. Mainly VFR tonight, with some lingering showers, but again mainly W/SW of an RIC to ECG line. However, patchy MVFR cigs are possible later tonight along the coast as northeasterly flow develops. A few light showers are possible Saturday, mainly in vicinity of the Delmarva and the western shore of the Ches. Bay. The wind will be NE 8-12kt Saturday with SCT-BKN CU/SC. BKN cigs will mainly be VFR, with occasionally MVFR possible (especially near the coast). Outlook: Mainly VFR Saturday night into Sunday, although brief MVFR conditions are possible early Sunday. Another cold front slowly crosses the region Monday into Tuesday as high pressure builds across northern New England and Atlantic Canada. This will bring more unsettled conditions with degraded flight conditions through at least mid-week. && .MARINE... As of 325 PM EDT Friday... Key Messages: - Mainly sub-SCA conditions are forecast through the weekend, though a period of low-end SCAs due to 5 foot seas is possible from Saturday-Saturday night across the SE VA/NE NC coastal waters. Elevated NE to E winds prevail later today through Saturday night in the wake of a cold front. - Decent model consensus that strong high pressure becomes locked in place across eastern Canada/northern New England next week, bringing several days of onshore flow and the potential for strong SCAs or Gales. SCA level winds are forecast by Monday night/Tuesday, with the highest winds likely occurring between Tuesday night and Thursday. A cold front has pushed through most of the local waters this afternoon and has shifted the winds out of the N-NE around 10-15 kt. A slightly stronger push of CAA will arrive tonight into Saturday, which will allow wind speeds to increase to ~15 kt with gusts to 20 kt as the wind direction gradually veers from the NE tonight to ENE Saturday. Winds will then shift E-SE by Sunday night, decreasing slightly to E-SE. While wind speeds are expected to remain just below SCA criteria through the weekend, the onshore flow will likely allow seas to build to ~5 ft by Saturday (especially S of Cape Charles), with 4-5 ft seas persisting through Sat night. SCA advisories may be needed for this timeframe (Saturday night into Sunday). By late Monday or Tuesday, winds will shift back out of the NE as strong surface high pressure (normalized anomalies ~2 std dev) builds in over eastern Canada. Stronger CAA from the high doesn`t look to make it to the area until Wednesday or Thursday, as a low pressure system potentially deepens off the Atlantic coast. SCA level winds are expected by Tuesday, with a greater increase in NE winds by Tue night/Wed (and continuing through Thu) due to the combination of stronger CAA and a tightening pressure gradient between the high to our north and deepening low pressure to our SE. This is still several days away, so the timing and placement of the synoptic scale systems are not locked in place yet, but there is quite a strong consensus amongst the Euro, GFS, and Canadian ensembles in the general pattern. At least strong SCAs appear probable from Tuesday night-Thursday, with a decent chance of frequent gale force gusts, so we will continue to monitor the trends as this gets closer in time. There is a moderate rip current risk for all beaches Saturday and Sunday as the flow becomes onshore again. Will note that short periods (~4-5 s) and increasing waves heights of 3-4 ft may cause more of a washing machine effect than rip currents Saturday, but because of increasing onshore swell, will monitor for the potential of upgrading to a high risk for the southern beaches. Hazardous surf conditions are likely next week with the prolonged onshore flow. && .AKQ WATCHES/WARNINGS/ADVISORIES... MD...None. NC...None. VA...None. MARINE...None. && $$ DISCUSSION...AJZ AVIATION...AJZ MARINE...ERI/KMC