Sunrise 6:16 AM   Sunset 7:56 PM Moonrise 9:02 PM   Moonset 5:55 AM

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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 1035 Am Edt Thu Apr 25 2024
Rest of today - NE winds 5 to 10 kt. Waves 1 ft. Tonight - E winds 5 kt. Waves less than 1 ft. Fri - E winds 5 to 10 kt. Waves 1 ft. Fri night - SE winds 5 to 10 kt. Waves 1 ft. Sat - SE winds 5 to 10 kt. Waves 1 ft. Sat night - S winds 10 kt with gusts to 20 kt. Waves 1 ft. Sun - SW winds 5 to 10 kt. Waves 1 ft. Mon - S winds 5 to 10 kt. Waves 1 ft.

ANZ500 1035 Am Edt Thu Apr 25 2024
Synopsis for the tidal potomac and md portion of the chesapeake bay -
high pressure will Wedge into the region for the end of the week, then move offshore over the weekend. Small craft advisories will likely be needed for portions of the waters both Friday and Saturday afternoons. Extensions may be needed due to southerly channeling Sunday into early next week. NExt substantial front to cross the waters looks to arrive by Tuesday bringing renewed chances for showers and Thunderstorms.

FXUS61 KLWX 251403 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1003 AM EDT Thu Apr 25 2024

SYNOPSIS
A weak area of low pressure will continue to push further offshore today while high pressure wedges it's way south along the eastern Appalachians Friday into Saturday. Cooler temperatures will prevail as a result along with increased cloud cover. A warm front lifts through the area this weekend bringing a significant warm up Sunday and Monday. The next chance for widespread precipitation arrives with a cold front Tuesday into Wednesday next week.

NEAR TERM /THROUGH TONIGHT/
A weak piece of shortwave energy aloft will continue to push further off the lower Delmarva coast later this morning and into midday. With shortwave energy aloft and a lee standing wave in place increased cloudiness (i.e low and mid level stratus)
persists across a large portion of the forecast region.

Excess cloud cover will remain prevalent through this evening as onshore east to northeast flow increases with high pressure wedging south from the eastern Great Lakes region. This will hold temperatures in the mid to upper 50s and low 60s throughout the day with upper 40s and low 50s over the mountains. Cloud cover will linger tonight although some clearing is likely especially along the PA/MD border and back across central/northeast MD. These areas do have the potential to see a little frost with overnight lows in the mid to upper 30s. Confidence is low given the extent of the cloud cover and clearing along the periphery of the wedge.
Elsewhere lows are expected to remain in the upper 30s and low 40s especially where low and mid level clouds look to hang on.
Some patchy drizzle is even possible by daybreak Friday morning along the crest of the Blue Ridge and eastern slopes of the Alleghenies as moisture increases on southeast flow.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/
A mix of sun and clouds expected Friday with increasing clouds in the southwest. Highs Friday will not be as chilly as today, but mainly reach near 60 to lower 60s in most places. Lows Friday night will drop into the 40s and should not be as chilly as tonight. The next chance for showers will come Friday night as warm advection ensues aloft ahead of a system over the center of the country and its associated warm front.

High pressure will continue to nudge to the southeast on Saturday. The warm front is expected to push farther east and northeast during the day and bring a few showers mainly along and west of the Blue Ridge. Highs on Saturday will range from the upper 50s and lower 60s north of I-66 with middle to upper 60s to the south of this corridor. Saturday night's lows a few degrees milder.

LONG TERM /SUNDAY THROUGH WEDNESDAY/
Deep ridging builds across the Southeast to Mid-Atlantic states Sunday into Monday. Dry conditions, and very warm to near record warmth is likely across the area. Highs reach the upper 70s to low 80s Sunday, and mid to upper 80s Monday. A few spots could reach 90F Monday afternoon. Mild overnight lows in the upper 50s to mid 60s, especially Monday night.

Models are in a good agreement for Tuesday, indicating a cold front sweeping through the area in the afternoon to early evening. Given the building heat for 2-3 days, there is likely to be modest instability for thunderstorms even with dew points in the upper 50s to low 60s. Forcing along the cold front is likely to generate isolated to scattered thunderstorms, some of which could be strong.

This cold front brings little relief from the warmth as highs still reach the lower 80s Wednesday.

AVIATION /14Z THURSDAY THROUGH MONDAY/
VFR conditions are expected through Friday night. A brief period of two to three hours of patchy drizzle or patchy fog near CHO could lead to slight reductions to MVFR or IFR in terms of ceiling later Thursday night or early Friday morning. Winds northeast, becoming east by this afternoon. Winds Friday will be out of the southeast.

A warm front lifts into the area Saturday providing a few spotty showers to terminals west of the corridor. Outside of the showers expect extra mid and high level clouds from time to time with southerly winds gusting 20 to 25 kts.

VFR conditions expected Sunday into Monday, with mostly dry conditions. South to southwest winds around 10 knots.

MARINE
SCAs remain in effect through this morning. Sub-SCA northeast, then easterly winds expected this afternoon. Sub-SCA southeast winds are expected Friday, though channeling is possible late in the day.

Winds could reach SCA for a few hours both Saturday and Sunday.
A warm front will lift across the waters Saturday changing the winds toward more of a southerly direction.

South to southwest winds prevail Sunday into the start of next week, with mostly dry conditions across the local waters. Southerly channeling is possible, which could result in a few hours of near- SCA conditions during the afternoon to evening each day.

TIDES/COASTAL FLOODING
A prolonged period of northeast to east, then southeast to south winds through the weekend is going to cause water levels to rise across the Chesapeake Bay and Tidal Potomac River. Starting later this morning, sensitive locations at Annapolis and Straits Point will reach Action Stage. The evening high tide being the astronomically lower of the day will likely stay out of minor flooding, though still reach Action Stage.

The first impactful high tide cycle is expected to be Friday morning. Coastal Flood Watches are in effect for Annapolis and Straits Points as moderate coastal flooding is possible at that time. Other spots could reach minor flood stage, which would require additional Coastal Flood Advisories. Additional periods of coastal flooding are likely over the weekend as southerly winds persist, and many locations approach or reach minor flood stage.

LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...Coastal Flood Watch from late tonight through Friday morning for MDZ014.
Coastal Flood Watch from late tonight through Friday morning for MDZ017.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 2 PM EDT this afternoon for ANZ531>534-537-541-543.

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Glymont
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Thu -- 02:50 AM EDT     0.34 feet Low Tide
Thu -- 06:18 AM EDT     Sunrise
Thu -- 06:55 AM EDT     Moonset
Thu -- 08:47 AM EDT     2.15 feet High Tide
Thu -- 03:53 PM EDT     0.27 feet Low Tide
Thu -- 07:55 PM EDT     Sunset
Thu -- 09:28 PM EDT     1.79 feet High Tide
Thu -- 10:02 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Glymont, Maryland, Tide feet

Mount Vernon
Click for Map
Thu -- 03:21 AM EDT     0.43 feet Low Tide
Thu -- 06:17 AM EDT     Sunrise
Thu -- 06:55 AM EDT     Moonset
Thu -- 09:17 AM EDT     2.61 feet High Tide
Thu -- 04:24 PM EDT     0.34 feet Low Tide
Thu -- 07:55 PM EDT     Sunset
Thu -- 09:58 PM EDT     2.17 feet High Tide
Thu -- 10:02 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Mount Vernon, Virginia, Tide feet

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