Tuesday, November30, 2021
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Marine Weather and Tides
Annapolis, MD

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:03AMSunset 4:45PM Tuesday November 30, 2021 7:23 PM EST (00:23 UTC) Moonrise 2:28AMMoonset 2:30PM Illumination 12% Phase: Waning Crescent; Moon at 26 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 637 Pm Est Tue Nov 30 2021
Tonight..W winds 5 kt. Waves less than 1 ft.
Wed..W winds around 5 kt. Waves 1 ft or less.
Wed night..S winds 5 to 10 kt. Waves 1 ft.
Thu..SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Thu night..W winds 5 to 10 kt with gusts to 25 kt. Waves 2 ft.
Fri..NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Fri night..N winds 5 to 10 kt. Waves 1 ft.
Sat..NW winds 10 to 15 kt. Waves 1 to 2 ft.
Sun..N winds 10 kt...becoming se. Waves 1 to 2 ft.
ANZ500 637 Pm Est Tue Nov 30 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will pass through this evening, then return northward as a warm front Wednesday. High pressure will briefly return overnight into Wednesday. A cold front will move into the area late in the week. A small craft advisory may be needed for portions of the waters Wednesday night through Thursday night. A gale warning may be needed for portions of the waters Thursday.


7 Day Forecast for Marine Location Near Annapolis, MD
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location: 38.97, -76.49     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 302021 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 321 PM EST Tue Nov 30 2021

SYNOPSIS. A weak cold front will pass through this evening, then return northward as a warm front Wednesday. High pressure will build to the south for Wednesday and Thursday. Another cold front will impact the area Thursday night into Friday. A larger storm system may impact the region by early next week.

NEAR TERM /THROUGH WEDNESDAY/. Sunshine has enveloped much of the region save for northeastern Maryland as of mid afternoon. Clouds may not break much further prior to sunset. Where the sun has come out, temperatures have warmed well into the 50s. Elsewhere, they are stuck in the 40s.

High pressure will build to the south through Wednesday as today's cold front returns northward as a warm front. With a clear sky and lighter wind tonight, temperatures should radiate to around freezing for many areas, with upper 20s in the typically cooler outlying areas, and perhaps a few degrees warmer immediately in the lee of the higher elevations due to a localized persistence of northwesterly winds. Temperatures Wednesday are likely to be similar to today under similar synoptic conditions as clouds increase ahead of the next front.

SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY NIGHT/. The main story heading through the second half of the week will be a strong cold front and period of gusty downsloping winds Thursday afternoon into Friday. A period of scattered shower activity is possible in warm advection ahead of the front Wednesday night before drying commences after frontal passage. A strong wind field will develop, oriented perpendicular to the Allegheny Front. This, coupled with temperature inversion heights just above the ridgetops (temperatures warmer aloft just above the ridgetops relative to the surface) may set the stage for a notable downsloping wind event. Gusts of 50 to 60 mph are possible along and immediately in the lee of the ridges between the Allegheny Front and Interstate 81 both with the initial frontal passage Thursday afternoon and again as the wind fields increase Thursday evening and night.

Further east, although it is likely to be breezy, winds should be much weaker in a relative sense given the parent storm system causing all this will be displaced well to the northwest. Breezy conditions likely continue into Friday as humidity drops precipitously. Much colder air is lacking behind this front, however, so temperatures will probably eclipse 60 across the lowlands again on Friday.

LONG TERM /SATURDAY THROUGH TUESDAY/. The aforementioned front may meander back northward towards the region on Saturday before the parent trough pushes the front off to the east Sunday. The front will continue to be lacking moisture, so mainly just clouds (little to no precip) are expected with the front nearby Saturday.

Attention then turns to the system that may be impacting the eastern third of the country early next week. A northern stream trough will dig across the Ohio Valley on Sunday. Displaced to the south is a piece of energy embedded in the southern stream. If this energy can get ahead of the trough, an area of low pressure could form near the southeast US and take a track to the north and east (either inland or coastal). There is the potential for no storm if the energy lags the trough. Precip chances and type are too uncertain so have maintained NBM middle-of-the-road PoPs. Temps likely decrease late Monday into Tuesday as CAA prevails.

AVIATION /20Z TUESDAY THROUGH SUNDAY/. Mainly VFR through Saturday. NAM BUFKIT indicates possible MVFR CIGs near BWI/MTN 6-12z Wed. Brief MVFR is possible in showers Wednesday evening. Otherwise, generally light W/NW flow behind a cold front tonight will pivot to southerly Wednesday afternoon. LLWS is likely INVOF higher terrain through this evening, then again Wednesday night through Thursday night (possibly extending further east Thursday night). Gusty winds are possible Thursday afternoon through Friday, generally around 25 kt though winds could be notably higher near MRB.

MARINE. Light W/NW flow behind a cold front this evening is expected to become S Wednesday afternoon. Gusty W/NW winds behind another cold front are likely Thursday into Friday with solid SCA conditions possible, though the potential for gale-force winds appears to have decreased somewhat for the moment. Other than some scattered shower activity Wednesday night, most of the time should be dry through the end of the week. SCA conditions may persist into Saturday.

FIRE WEATHER. A period of strong, gusty winds over and just east of the higher terrain between the Allegheny Front and Interstate 81 is possible Thursday afternoon through Friday. Additionally, humidity is expected to drop sharply beginning Thursday night. Given the recent dry conditions and little precipitation expected between now and then, enhanced fire spread is possible Thursday night through Friday, mainly between the Blue Ridge Mountains and the Allegheny Front.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . Fire Weather Watch from Thursday evening through Friday afternoon for MDZ003-501-502. High Wind Watch from Thursday afternoon through late Thursday night for MDZ003-501-502. VA . Fire Weather Watch from Thursday evening through Friday afternoon for VAZ025>028-503-504. High Wind Watch from Thursday afternoon through late Thursday night for VAZ025>028-503-504. WV . Fire Weather Watch from Thursday evening through Friday afternoon for WVZ050>052-055-501>506. High Wind Watch from Thursday afternoon through late Thursday night for WVZ050>052-055-501>506. MARINE . Small Craft Advisory until 6 PM EST this evening for ANZ532- 533-536-540>542. Small Craft Advisory until 11 PM EST this evening for ANZ534- 537-543.

SYNOPSIS . DHOF NEAR TERM . DHOF SHORT TERM . DHOF LONG TERM . CPB AVIATION . DHOF/CPB MARINE . DHOF/CPB FIRE WEATHER . DHOF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 1 mi96 min WNW 1.9G1.9 44°F 48°F1014.4 hPa
44063 - Annapolis 2 mi36 min NE 1.9G1.9 41°F 47°F1015.7 hPa
CPVM2 6 mi96 min 47°F 36°F
TPLM2 - Thomas Point, MD 6 mi24 min E 2.9G4.1 46°F 47°F1016.2 hPa (+1.5)
BSLM2 - Chesapeake Bay, MD 17 mi114 min 0 42°F 1014 hPa32°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 17 mi96 min E 2.9G4.1 45°F 1014.8 hPa
FSNM2 17 mi96 min 0G1 46°F 1014.5 hPa
BLTM2 - 8574680 - Baltimore, MD 21 mi96 min SSE 1G1.9 46°F 52°F1014.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 21 mi102 min E 2.9G2.9 40°F 44°F1015.1 hPa
44062 - Gooses Reef, MD 29 mi48 min SE 5.8G7.8 45°F 48°F1016.8 hPa
WASD2 - 8594900 - Washington, DC 29 mi96 min 0G0 45°F 44°F1014.4 hPa
CA2 - 8571892 - Cambridge, MD 35 mi96 min E 1.9G5.1 45°F 44°F1014.9 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 40 mi96 min SSE 1G2.9 51°F 1014.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 45 mi96 min 0G1 47°F 50°F1014.6 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD1 mi-43170 minN 010.00 miFair40°F32°F73%1015.5 hPa
Fort Meade / Tipton, MD17 mi29 minN 010.00 miFair32°F27°F80%1015.9 hPa
Baltimore, Baltimore-Washington International Airport, MD18 mi-43170 minN 010.00 miFair36°F26°F67%1015 hPa
Camp Springs / Andrews Air Force Base, MD22 mi-43112 minN 010.00 miFair40°F26°F56%1015.1 hPa
College Park Airport, MD23 mi49 minN 010.00 miFair36°F28°F73%1015.2 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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This dayNW7W4W4------000SW4S334------S5SW65W800NW30
1 day ago0N600NW6NW15
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2 days agoS400E3E3E4E3E6E4E6SE5S30SW44SW3SE10E11SE11SE700N30

Tide / Current Tables for Annapolis, Maryland (2)
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Annapolis
Click for Map
Tue -- 12:36 AM EST     0.94 feet High Tide
Tue -- 02:27 AM EST     Moonrise
Tue -- 07:05 AM EST     Sunrise
Tue -- 07:08 AM EST     -0.05 feet Low Tide
Tue -- 01:30 PM EST     1.02 feet High Tide
Tue -- 02:30 PM EST     Moonset
Tue -- 04:44 PM EST     Sunset
Tue -- 08:00 PM EST     0.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 01:23 AM EST     0.48 knots Max Flood
Tue -- 02:27 AM EST     Moonrise
Tue -- 04:00 AM EST     -0.00 knots Slack
Tue -- 07:04 AM EST     Sunrise
Tue -- 07:17 AM EST     -0.71 knots Max Ebb
Tue -- 10:15 AM EST     0.00 knots Slack
Tue -- 01:48 PM EST     0.99 knots Max Flood
Tue -- 02:29 PM EST     Moonset
Tue -- 04:43 PM EST     Sunset
Tue -- 05:18 PM EST     -0.00 knots Slack
Tue -- 08:25 PM EST     -0.81 knots Max Ebb
Tue -- 11:52 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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