Thursday, September23, 2021
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Marine Weather and Tides
Portsmouth, VA

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 6:53AMSunset 7:02PM Thursday September 23, 2021 8:58 PM EDT (00:58 UTC) Moonrise 7:38PMMoonset 8:18AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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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ANZ638 James River From James River Bridge To Hampton Roads Bridge- Tunnel- 657 Pm Edt Thu Sep 23 2021
Tonight..E winds 5 kt, becoming nw late this evening, then increasing to 10 to 15 kt after midnight. Waves 1 to 2 ft. A slight chance of drizzle early this evening.
Fri..N winds 15 kt. Waves around 2 ft.
Fri night..N winds 10 kt. Waves 1 to 2 ft.
Sat..N winds 5 to 10 kt. Waves 1 foot.
Sat night..NW winds 5 kt, becoming W in the late evening and overnight. Waves 1 foot.
Sun..NW winds 10 kt. Waves 1 foot.
Sun night..NW winds 5 to 10 kt. Waves 1 foot.
Mon..W winds 5 to 10 kt. Waves 1 foot.
Mon night..SW winds 5 to 10 kt. Waves 1 foot.
ANZ600 657 Pm Edt Thu Sep 23 2021
Synopsis for fenwick island de to currituck beach light nc out 20 nautical miles including virginia portion of the chesapeake bay, currituck sound and portions of the james, york, and rappahannock rivers.. A cold front will move to the southeast of the local waters by Friday morning. Canadian high pressure builds in this weekend.


7 Day Forecast for Marine Location Near Portsmouth, VA
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location: 36.93, -76.34     debug


Area Discussion for - Wakefield, VA
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FXUS61 KAKQ 240009 AFDAKQ

AREA FORECAST DISCUSSION National Weather Service Wakefield VA 809 PM EDT Thu Sep 23 2021

SYNOPSIS. A cold front will gradually push off the coast early this evening. Cool high pressure builds in from the west Friday into Saturday. A dry cold front crosses the area Saturday night, with high pressure returning Sunday and Monday.

NEAR TERM /THROUGH FRIDAY/. As of 750 PM EDT Thursday .

The latest analysis indicates strong sfc low pressure occluded over Lake Huron, with a sfc cold front now located just off the immediate coast and expected to gradually move east overnight. Meanwhile, a post-frontal boundary is nearly stationary in eastern Virginia and marks the edge of the cloud shield. Temps as of 745 PM ranged from the upper 50s NW to the upper 60s SE.

Clouds and some light showers/drizzle will linger into the evening near the coast and across the Eastern Shore through tonight, but otherwise clear and cool conditions will prevail inland. Post- frontal CAA brings cool lows in the mid-upper 40s/near 50F in the Piedmont under a clear sky. It will remain much warmer closer to the coast due to clouds and better mixing, with lows generally 60-65F.

Mostly sunny Fri other than some morning clouds near the coast (as the front and a trough of low pressure lingers offshore). A northerly wind of 5-10 mph is expected inland, with 10-15 mph at the coast. Highs will be mainly in the mid 70s CWA- wide as sfc high pressure expand NE into the local area from the Tn Valley.

SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/. As of 330 PM EDT Thursday .

Clear/cool Fri night as sfc high pressure settles over the local area. Have continued to go on cool side of guidance for most areas given a dry airmass and sfc high pressure over the region. Expect lows in the mid/upper 40s to lower 50s across the inland 2/3 of the CWA (low- mid 50s urban areas). Near the coast lows will be 55-60F. Mostly sunny and pleasant Sat with highs in the mid to upper 70s. A bit more in the way of clouds as the next shortwave aloft moves across at least northern sections of the CWA Sat night. Lows mainly in the 50s. This pushes a reinforcing but dry cold front through the area by Sun morning. Mostly sunny on Sunday with highs in the mid to upper 70s

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/. As of 300 PM EDT Thursday .

The extended continues to look fairly quiet and seasonable. Early next week, the models are in good agreement in showing a trough across the east and ridging to the west. By the end of the week, the pattern across North America becomes very blocky with a 2-3 sigma ridge extending northward into central Canada and a upper low over/near the east coast. Exact placement of this upper low will be critical in the precip and temperature forecast for Thu/Friday. The 12z GFS is significantly different from the previous run and shows the upper low moving southward along the east coast. Meanwhile, the ECMWF shows the upper low further west and becoming cut off from the main flow over the Ohio Valley by the end of the week. With all of this said, will continue with the warmest temps of the week on Tuesday and Wednesday ahead of a weak cold front. Lower to mid 80s expected. Temperature forecast becomes a little more problematic for Thu depending on the exact placement of the upper low. Will cool off temps back to mid-upper 70s for now, but I could certainly see cooler temps if the upper low is further east. Overall most of the area will stay dry next week, although there is a small chance for rain ahead of a weak cold front Tue night.

AVIATION /00Z FRIDAY THROUGH TUESDAY/. As of 740 PM EDT Thursday .

A cold front moved through earlier this afternoon with lingering showers behind the front and ahead of a weak boundary. Primarily VFR CIGs except borderline MVFR CIGs at ECG (3000-3100 ft) this evening. Prevailing VFR CIGs are expected with occasional drops to MVFR at ECG/ORF/SBY through tonight. Expect the post-frontal boundary with cloud cover and light showers/drizzle to gradually drift east tonight into Friday. Behind the boundary, clear skies will prevail. Winds are generally NW/N (<5 kt) and will become NNW/N 5-10 kt late tonight/early Friday morning. Winds on Fri will be N 5-10kt (except 10-15kt through ~18-20Z near the coast). Mainly sunny, though partly cloudy/variably cloudy at the coast with clearing expected to continue to push east through the day.

Outlook: Dry with VFR conditions are to persist over the weekend and through Mon/Tue as high pressure builds into the area and then slides offshore.

MARINE. As of 330 PM EDT Thursday .

A well defined area of low pressure at the surface and aloft is located over the Great Lakes/Michigan this afternoon. Its trailing cold front has just about crossed the waters, with winds now NW at 5- 15 kt. Seas are still 5-7 ft, and did approach 8 ft off the VA/MD coast earlier. Have dropped the SCAs for the rivers and Currituck Sound. Winds will generally be NW at 5-15 kt through the first part of tonight. A secondary CAA surge arrives from the NNW during the latter part of the night . and winds become NNW with speeds increasing to 15-20 kt on the bay/ocean as cooler/drier air arrives (wind speeds are expected to be slightly less on the rivers/Currituck Sound). Have extended the SCAs for the Ches Bay until 14-17z Fri. In addition, seas will likely remain elevated through much of Fri, so have extended the SCAs for the ocean until 17-20z for now (these may need to be extended further for the srn coastal waters). Seas will diminish to ~5 ft by late tonight, but will remain 4-5 ft through much of Fri (especially south) thanks to the increasing NNW winds.

Sub-SCA conditions are expected from Fri evening through at least Sat evening as high pressure builds into the area. Could see a brief uptick in NW winds (to near 15 kt) Sat night-Sun AM as a second cold front crosses the waters. Sub-SCA conditions are expected early next week. Seas will diminish to 3-4 ft Saturday and 2-3 ft Sunday into next week.

TIDES/COASTAL FLOODING. As of 810 PM EDT Thursday .

Tidal anomalies continue to fall this evening as high tide (in the upper bay) has passed for most sites, with Cambridge just past high tide. A robust ebb tide is observed as well. Lewisetta did reach moderate flood stage, and Bishops Head touched moderate stage, but all other affected sites were within minor flood thresholds. Coastal flood headlines for most of the bay side of the MD Ern Shore and VA Nrn Neck expired at 8 PM, with Dorchester Co. continuing through 10 PM (for Cambridge). With the increasing NNW winds overnight, no additional coastal flooding is expected after this evening's high tide.

A moderate rip current risk is forecast for Friday.

AKQ WATCHES/WARNINGS/ADVISORIES. MD . Coastal Flood Advisory until 10 PM EDT this evening for MDZ021. NC . None. VA . None. MARINE . Small Craft Advisory until 1 PM EDT Friday for ANZ632-634-650- 652-654. Small Craft Advisory until 10 AM EDT Friday for ANZ630-631. Small Craft Advisory until 4 PM EDT Friday for ANZ656-658.

SYNOPSIS . LKB NEAR TERM . LKB/RMM SHORT TERM . LKB/MAM LONG TERM . MRD AVIATION . LKB/RMM MARINE . CP/ERI TIDES/COASTAL FLOODING . AKQ


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SWPV2 - 8638610 - Sewells Point, VA 1 mi58 min 78°F1013.9 hPa (+1.9)
CRYV2 - 8638595 - South Craney Island, VA 3 mi58 min E 1 G 2.9 70°F 1013.7 hPa (+1.8)
WDSV2 - 8638614 - Willoughby Deguassing , VA 4 mi58 min E 4.1 G 5.1 69°F 1014.1 hPa (+1.8)
DOMV2 - 8638511 - Dominion Terminal Association, VA 5 mi58 min Calm G 2.9 69°F 1014.1 hPa (+1.6)
MNPV2 - 8639348 - Money Point, VA 11 mi58 min E 1 G 2.9 69°F 79°F1013.4 hPa (+1.7)
44087 12 mi32 min 77°F2 ft
CHBV2 15 mi58 min E 4.1 G 5.1 70°F 1012.9 hPa (+1.8)
CHYV2 - 8638999 - Cape Henry, VA 18 mi58 min NNE 2.9 G 6 70°F 1014 hPa (+1.5)
44072 19 mi40 min E 3.9 G 3.9 69°F 77°F
YKRV2 - 8637611 - York River East Rear Range Light, VA 22 mi58 min Calm G 1.9 70°F
YKTV2 - 8637689 - Yorktown, VA 22 mi58 min SW 4.1 G 4.1 68°F 78°F1013.4 hPa (+1.7)
KPTV2 - 8632200 - Kiptopeke, VA 25 mi58 min ESE 1 G 1.9 78°F
44099 - Cape Henry, VA (147) 33 mi32 min 76°F5 ft
YRSV2 - Chesapeake Bay,VA 39 mi88 min Calm 66°F 1014 hPa65°F
44058 - Stingray Point, VA 44 mi40 min NNE 1.9 G 3.9 69°F 1015.1 hPa
RPLV2 - 8632837 - Rappahannock Light, VA 45 mi58 min E 6 G 7 1014.5 hPa (+1.9)

Wind History for South Craney Island, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Norfolk, Naval Air Station, VA3 mi59 minS 310.00 miMostly Cloudy68°F63°F84%1014.3 hPa
Norfolk, Norfolk International Airport, VA8 mi67 minN 010.00 miOvercast66°F63°F90%1013.6 hPa
Langley Air Force Base, VA11 mi2 hrsN 010.00 miOvercast68°F66°F91%1013.8 hPa
Newport News, Newport News / Williamsburg International Airport, VA17 mi64 minN 010.00 miOvercast66°F66°F100%1013.7 hPa
Virginia Beach, Oceana, Naval Air Station, VA18 mi62 minN 010.00 miOvercast70°F63°F79%1013.7 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi63 minN 010.00 miOvercast65°F64°F96%1013.9 hPa
Fort Eustis / Felker, VA21 mi2 hrsN 010.00 miMostly Cloudy67°F58°F73%1013.5 hPa
Suffolk, Suffolk Municipal Airport, VA22 mi63 minN 010.00 miOvercast67°F64°F92%1014.2 hPa

Link to 5 minute data for KNGU

Wind History from NGU (wind in knots)
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Tide / Current Tables for Hampton Roads, Virginia
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Hampton Roads
Click for Map
Thu -- 05:12 AM EDT     0.26 feet Low Tide
Thu -- 06:54 AM EDT     Sunrise
Thu -- 09:18 AM EDT     Moonset
Thu -- 11:28 AM EDT     3.12 feet High Tide
Thu -- 05:48 PM EDT     0.37 feet Low Tide
Thu -- 07:00 PM EDT     Sunset
Thu -- 08:36 PM EDT     Moonrise
Thu -- 11:43 PM EDT     2.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.31.710.50.30.40.81.52.22.83.13.12.72.21.50.90.50.40.61.11.72.32.7

Tide / Current Tables for Chesapeake Bay Entrance, Virginia Current
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Chesapeake Bay Entrance
Click for Map
Thu -- 01:11 AM EDT     -0.00 knots Slack
Thu -- 04:36 AM EDT     -1.25 knots Max Ebb
Thu -- 06:52 AM EDT     Sunrise
Thu -- 07:47 AM EDT     0.00 knots Slack
Thu -- 09:17 AM EDT     Moonset
Thu -- 10:22 AM EDT     0.93 knots Max Flood
Thu -- 01:39 PM EDT     -0.00 knots Slack
Thu -- 05:11 PM EDT     -1.25 knots Max Ebb
Thu -- 06:58 PM EDT     Sunset
Thu -- 08:30 PM EDT     0.00 knots Slack
Thu -- 08:35 PM EDT     Moonrise
Thu -- 10:50 PM EDT     0.78 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.1-0.4-0.9-1.2-1.2-1-0.50.10.60.90.90.60.3-0.2-0.7-1.1-1.2-1.2-0.8-0.30.30.70.8

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