Sunrise 6:06 AM   Sunset 8:03 PM Moonrise 2:14 AM   Moonset 12:42 PM

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ANZ538 Patapsco River Including Baltimore Harbor- 753 Am Edt Thu May 2 2024
.small craft advisory in effect from Friday morning through Friday afternoon - .
Today - SW winds 5 to 10 kt. Waves 1 ft or less. Tonight - SE winds around 5 kt - .becoming ne late. Waves flat. Fri - E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. Fri night - E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. Sat - E winds 10 kt. Waves 1 ft. Sat night - SE winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely. Sun - SE winds 10 kt - .becoming sw after midnight. Waves 1 to 2 ft. Showers likely. A chance of showers after midnight. Mon - SW winds 5 kt. Waves less than 1 ft. A chance of showers.

ANZ500 753 Am Edt Thu May 2 2024
Synopsis for the tidal potomac and md portion of the chesapeake bay -
high pressure briefly returns Thursday before a slow moving front crosses the local waters over the weekend. Unsettled conditions look to linger over the waters heading into early next week. Small craft advisories may be needed on both Friday and Saturday.

FXUS61 KLWX 020801 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 401 AM EDT Thu May 2 2024

SYNOPSIS

An upper level ridge will build over the area today through Friday. Meanwhile, a backdoor cold front will cross the area late Thursday night into Friday before sinking south this weekend. A secondary cold front and area of low pressure will pass through the area Sunday into early next week.

NEAR TERM /THROUGH TONIGHT/

An upper level ridge will build over the East today leading to hot and record high temps at IAD and BWI. Humidity levels will be manageable due to dewpoints below 60. Most of the area should be capped today, except perhaps over the mountains where an isold t-storm may develop late in the day. Other than sct high clouds, skies should remain mostly sunny.

It should remain mostly clear tonight, except for some cirrus.
Backdoor cold front will enter the picture late tonight with winds turning from the NE. No precip is expected.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/

Plenty of cirrus Fri and cooler as high pressure wedges south.
This will allow for onshore east to southeast flow to increase across the area especially east of the Blue Ridge. Isolated to scattered mountain showers and t-storms are expected as cdfnt banks against the Appalachians. Showers stay mainly west of the Blue Ridge Fri night, but begin to progress east Saturday into Sunday as shortwave perturbations break down the ridge pattern.



LONG TERM /SUNDAY THROUGH WEDNESDAY/

A weak low pressure system and associated cold front will move through the area on Sunday. The cold front will stall over the forecast area Monday and Tuesday before lifting northward as a warm front Tuesday afternoon. This will bring a prolonged period of unsettled weather as we close out the weekend and begin the workweek. Shower and thunderstorm chances peak Sunday as the front moves through the area. rainfall will be heavy at times with localized instances of flooding possible due to southerly flow providing ample moisture. WPC has the western those along and west of the Blue Ridge in a marginal risk for excessive rainfall. At this time, the severe risk is low with limited instability.

Slight chance to chance PoPs linger through midweek as the aforementioned frontal boundary remains stalled over the area.
Afternoon showers and thunderstorms are possible each day.

High temperatures on Sunday will range from the mid 60s in NE Maryland and higher elevations to the upper 70s in central Virginia.
Overnight low temperatures will fall into the upper 50s to low 60s.
There will be a gradual warming trend each day with highs reaching the upper 80s on Wednesday.

AVIATION /08Z THURSDAY THROUGH MONDAY/

VFR today and Fri. Marine layer pushes inland Fri night into Saturday with MVFR cigs developing.

A cold front moving through the area and then stalling to our south will bring unsettled weather to all terminals Sunday and Monday.
During showers and thunderstorms, reduced CIGs and VSBYs are possible. Gusty southerly winds will gradually decrease throughout the day Sunday, gusting 15-20 knots in the morning. Winds remain out of the southeast on Monday, blowing 5 to 10 knots.

MARINE

SCA issued for Fri as onshore flow strengthens. It will likely need to be extended into Saturday and beyond.

Showers and thunderstorms are possible over the waters Sunday and Monday. Gusty southeasterly winds on Sunday will likely be SCA criteria. Winds remain out of the southeast on Monday, diminishing to sub-SCA criteria.

TIDES/COASTAL FLOODING

Onshore flow will lead to rising water levels Saturday into Sunday with minor coastal flooding expected during the weekend.

CLIMATE

Well above normal temperatures are forecast today. Below is a list of daily high temperature records.

==================================================================== Record Daily High Temperatures for Thursday 05/02 ==================================================================== Site Thursday 05/02 value (Year record was set)
-------------------------------------------------------------------- Record Highs Thursday 05/02

Sites Records/Year Forecast High Washington DC (DCA) 91/2018 89 Dulles(IAD) 88/2018 91 Baltimore, MD (BWI) 90/2018 91 Martinsburg, WV (MRB) 95/1942 90 Charlottesville, VA (CHO) 91/2018 94 Hagerstown, MD (HGR) 90/2018 90 Annapolis, MD (NAK) 90/1992 87

=================================================================== =

Site Legend ------------------------ DCA area - Washington DC BWI area - Baltimore MD Table Legend IAD area - Sterling/Dulles VA ------------------------ MRB area - Martinsburg WV Temperature (Year)
CHO area - Charlottesville VA HGR area - Hagerstown MD NAK area - Annapolis MD

Although the facilities (airports, etc.) where temperatures are currently observed were built in the mid to late 20th century, additional temperature records taken at nearby sites before that extend the valid periods of record back into the late 1800s (except for IAD, where records go back to 1960).

Record Event Reports (RERs) are only issued for the sites denoted with a (*).

All climate data is considered preliminary until reviewed by the National Centers for Environmental Information (NCEI).

LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Small Craft Advisory from 11 AM to 6 PM EDT Friday for ANZ530>543.

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Chain Bridge
Click for Map
Thu -- 03:13 AM EDT     Moonrise
Thu -- 03:48 AM EDT     2.99 feet High Tide
Thu -- 06:08 AM EDT     Sunrise
Thu -- 10:23 AM EDT     0.59 feet Low Tide
Thu -- 01:43 PM EDT     Moonset
Thu -- 04:06 PM EDT     3.14 feet High Tide
Thu -- 08:02 PM EDT     Sunset
Thu -- 11:07 PM EDT     0.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Chain Bridge, D.C., Tide feet

Benning Bridge
Click for Map
Thu -- 03:13 AM EDT     Moonrise
Thu -- 03:44 AM EDT     3.11 feet High Tide
Thu -- 06:08 AM EDT     Sunrise
Thu -- 10:17 AM EDT     0.62 feet Low Tide
Thu -- 01:42 PM EDT     Moonset
Thu -- 04:02 PM EDT     3.26 feet High Tide
Thu -- 08:02 PM EDT     Sunset
Thu -- 11:01 PM EDT     0.48 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Benning Bridge, D.C., Tide feet

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Sterling, VA,