Monday, July6, 2020
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Marine Weather and Tides
Portsmouth, VA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:51AMSunset 8:29PM Monday July 6, 2020 3:58 AM EDT (07:58 UTC) Moonrise 9:00PMMoonset 6:05AM Illumination 99% Phase: Full Moon; Moon at 16 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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ANZ632 Chesapeake Bay From New Point Comfort To Little Creek Va- 325 Am Edt Mon Jul 6 2020
Through 7 am..SW winds 10 kt. Waves 1 foot.
Today..S winds 10 kt, becoming se 10 to 15 kt late. Waves 1 to 2 ft.
Tonight..S winds 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves 1 to 2 ft.
Tue..S winds 5 to 10 kt, becoming se 10 to 15 kt late. Waves 1 to 2 ft.
Tue night..SE winds 10 to 15 kt, becoming S 5 to 10 kt after midnight. Waves 1 to 2 ft.
Wed..SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers. A chance of tstms in the afternoon.
Wed night..SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms.
Thu..E winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves 1 to 2 ft. A chance of showers. A chance of tstms in the afternoon.
Thu night..E winds 5 to 10 kt. Waves around 2 ft. A chance of showers and tstms.
Fri..E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. A chance of tstms in the afternoon.
Fri night..SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms. Winds and waves higher in and near tstms.
ANZ652 Coastal Waters From Chincoteague To Parramore Island Va Out 20 Nm- 325 Am Edt Mon Jul 6 2020
Through 7 am..SW winds 10 to 15 kt. Seas around 2 ft. Mainly se swell with a dominant period of 9 seconds.
Today..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft with a dominant period of 9 seconds.
Tonight..S winds 10 to 15 kt. Seas around 3 ft with a dominant period of 9 seconds.
Tue..S winds 5 to 10 kt. Seas 2 to 3 ft. Mainly E swell with a dominant period of 9 seconds.
Tue night..S winds 10 to 15 kt, diminishing to 5 to 10 kt late. Seas around 3 ft with a dominant period of 8 seconds.
Wed..SE winds 5 to 10 kt. Seas 2 to 3 ft. Mainly se swell with a dominant period of 8 seconds.
Wed night..SE winds 10 kt. Seas around 3 ft. Mainly se swell with a dominant period of 8 seconds.
Thu..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms in the afternoon.
Thu night..SE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers and tstms.
Fri..SE winds 10 kt. Seas 4 to 5 ft. A chance of showers. A chance of tstms in the afternoon.
Fri night..S winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers and tstms. Winds and seas higher in and near tstms.


7 Day Forecast for Portsmouth, VA
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location: 36.929, -76.345     debug


7 Day Forecast for Chincoteague, VA
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location: 37.834, -75.409     


Area Discussion for - Wakefield, VA
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FXUS61 KAKQ 060635 AFDAKQ

AREA FORECAST DISCUSSION National Weather Service Wakefield VA 235 AM EDT Mon Jul 6 2020

SYNOPSIS. Weak high pressure will remain centered along the mid Atlantic coast through today, before moving farther offshore on Tuesday. Low pressure moves from the deep south to the Carolina coast on Wednesday, and lingers along the coast through Friday.

NEAR TERM /THROUGH TODAY/. As of 955 PM EDT Sunday .

Convection is waning across the Piedmont this evening. Otherwise, partly cloudy to mostly clear with temperatures in the upper 70s to low 80s. Dewpoints this evening are actually highest from central VA through the Piedmont where values are in the low mid 70s, while locations closer to the coast and over s-central VA and interior NE NC are in the upper 60s to around 70F. Lows tonight range from 70-75F, with some upper 60s over interior srn VA/NE NC. Patchy fog is possible over the NW Piedmont, especially for areas that received rain earlier this evening.

Heights aloft rise slightly on Mon as do H8 temps. Not expecting any AM convection as the flow becomes S to SSW. Highs will range from the mid 90s in the interior with upper 80s to lower 90s on the coast. Best chance for convection looks to be across the N during the late aftn/evening (~40%) with only about 20% for the southern 1/2 of the CWA. SPC has a marginal risk across the N where somewhat steeper mid level lapse rates and shear could lead to isolated strong/severe storms.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/. As of 330 PM EDT Sunday .

Chance PoPs linger Mon evening across the N, otherwise drying overnight with lows mainly 70-75F. By Tue, developing low pressure across the deep south will slowly move NE closer to the local area, but latest 12Z/05 GFS/NAM/ECMWF generally remain in good agreement that the deeper moisture will stay S of the local area. Thus, PoPs will again be mainly diurnal with just scattered 30-40% coverage from the mid/late aftn into the evening (PoPs staying only around 20% near the coast). Highs will be slightly cooler compared to Mon, primarily in the upper 80s at the immediate coast and over most of NE NC, with lower 90s elsewhere. From Tue night into early Wed, the low moves E across the Carolinas and then is expected to linger along the Carolina coast by Wed aftn with weak steering flow aloft. Have at least some PoPs across the southern zones all night Tue night, spreading N on Wed. It will be humid with dew pts into the lower to mid 70s and highs will be slightly cooler (especially in the S) due to more clouds, ranging from the mid 80s S to around 90F N.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. As of 400 PM EDT Friday .

05/12z global models and associated ensemble suites continue to depict an upper low and broad surface low pressure in vicinity of the Carolina and Mid-Atlantic coasts Wednesday night into Thursday. At this time, the general consensus is for this system to lift NE Thursday night into Friday as a strengthening upper level trough drops into the Ohio Valley Saturday into Sunday. Forecast PoPs Thursday range from 20-30% N to 40-50% S, and then 40- 50% across most of the area Friday and Saturday, and trending back toward a 20-30% climo PoP by Sunday. Forecast highs are generally in the mid/upper 80s Thursday, and then upper 80s to low 90s (mid 80s at the immediate coast) Friday through Sunday and these values are very typical for early July. Forecast lows are mainly in the upper 60s to low 70s.

AVIATION /07Z MONDAY THROUGH FRIDAY/. As of 230 AM EDT Monday .

VFR conditions were prevailing at the TAF sites early this morning with mainly SCT high clouds. Patchy fog is possible until around daybreak, but is expected to remain over the Piedmont and not affect any of the terminals. Generally mostly sunny this morning with SCT CU developing during the this aftn. There is a 30% chc of aftn showers/tstms at RIC, and 20% at SBY/PHF. The wind is expected to be southerly at 8-10 kt from late this morning through this aftn.

Any lingering showers/tstms should dissipate later this evening into the overnight hours, esply toward SBY. Otherwise, VFR conditions will prevail tonight into Tue, and a 20-30% chc of aftn showers/tstms Tue. At this time, there is a somewhat increased chc of showers/tstms from late Wed morning through Fri, as low pressure is forecast to lift NE along the coastal Carolinas and Mid Atlc coast.

MARINE. As of 330 PM EDT Sunday .

5-10 kt winds across the waters this afternoon, southerly from Cape Charles northward and southeasterly from the mouth of the Ches bay south. Waves are around 1 ft with 2 ft near the mouth of the bay while seas offshore are 2-3 ft.

SSE winds increase to 10-15 kt (highest generally from Cape Henry N) this evening then become S and SSW later tonight. Much of the same is expected for Monday and Tuesday with 5-10 kt SSE flow becoming S and SSW 10-15 in the late afternoon into the evening. Waves generally 1-2 ft and seas 2-3 ft. The picture become a bit murky for the mid/late week period with global models generally agreeing on a trough or closed low aloft over the Mid Atlantic/SE and a modest surface low near the Carolina coast on Wednesday. Thereafter, solutions diverge considerably with respect to the track and timing of the surface low through the region. Went with a blended approach showing increasing onshore flow and seas starting Wednesday night into early Friday from south to north.

TIDES/COASTAL FLOODING. As of 400 PM EDT Sunday .

Modestly increasing south and southeasterly winds this evening will combine with high astronomical tides tonight into early Monday, resulting in the potential for minor coastal flooding for the bay facing portions of the lower MD eastern shore. Nuisance flooding is also possible along the Northern Neck/Potomac river counties as well as VA portions of the eastern shore this evening and tonight. Additional flooding is possible during the high tide cycle Monday night with continued southerly flow.

AKQ WATCHES/WARNINGS/ADVISORIES. MD . Coastal Flood Advisory until 7 AM EDT this morning for MDZ021>023. NC . None. VA . None. MARINE . None.

SYNOPSIS . TMG NEAR TERM . AJZ/LKB SHORT TERM . LKB/TMG LONG TERM . AJZ AVIATION . TMG MARINE . MPR 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 mi65 min 81°F1016.5 hPa
CRYV2 - 8638595 - South Craney Island, VA 3 mi65 min SSW 4.1 G 7 77°F 1016.3 hPa
WDSV2 - 8638614 - Willoughby Deguassing , VA 4 mi65 min SW 8 G 9.9 77°F 1016.2 hPa
DOMV2 - 8638511 - Dominion Terminal Association, VA 5 mi65 min SSW 6 G 8.9 77°F 1017 hPa
MNPV2 - 8639348 - Money Point, VA 11 mi65 min SSW 2.9 G 5.1 75°F 81°F1016.4 hPa
44087 12 mi63 min 80°F1 ft
CHBV2 16 mi65 min SSW 6 G 7 77°F 1015.7 hPa
CHYV2 - 8638999 - Cape Henry, VA 18 mi65 min S 4.1 G 6 75°F 1017 hPa
44072 19 mi39 min W 7.8 G 9.7 78°F
YKRV2 - 8637611 - York River East Rear Range Light, VA 22 mi65 min SW 8 G 8.9 78°F 1016.9 hPa
YKTV2 - 8637689 - Yorktown, VA 22 mi65 min SW 9.9 G 13 77°F 81°F1015.8 hPa
KPTV2 - 8632200 - Kiptopeke, VA 25 mi65 min SSW 7 G 8 79°F
44099 - Cape Henry, VA (147) 33 mi93 min 78°F2 ft
YRSV2 - Chesapeake Bay,VA 39 mi89 min SW 1 75°F 1017 hPa70°F
WAHV2 - 8631044 - Wachapreague, VA 59 mi65 min WSW 7 G 9.9 78°F 83°F1016.5 hPa
44014 - VIRGINIA BEACH 64 NM East of Virginia Beach, VA 83 mi49 min SSW 3.9 G 5.8 75°F 75°F1016.9 hPa73°F

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 mi2 hrsSSW 510.00 miMostly Cloudy77°F70°F79%1017.1 hPa
Norfolk, Norfolk International Airport, VA8 mi68 minSSW 410.00 miFair76°F70°F82%1016.4 hPa
Langley Air Force Base, VA11 mi63 minSW 410.00 miFair76°F74°F96%1017.2 hPa
Newport News, Newport News / Williamsburg International Airport, VA17 mi65 minSSW 610.00 miFair76°F70°F82%1016.5 hPa
Virginia Beach, Oceana, Naval Air Station, VA18 mi63 minS 410.00 miMostly Cloudy74°F69°F85%1016.6 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi64 minN 07.00 miFair68°F67°F96%1016.9 hPa
Fort Eustis / Felker, VA21 mi2 hrsSSW 57.00 miFair77°F72°F85%1016.2 hPa
Suffolk, Suffolk Municipal Airport, VA22 mi64 minN 010.00 miFair70°F68°F95%1017.3 hPa

Link to 5 minute data for KNGU

Wind History from NGU (wind in knots)
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Last 24hrCalmS3E3CalmCalmCalmNE4NE5NE7NE6NE7E7E5S56S7S5SE5S5S6S6SW6S5SW4
1 day agoW5W3W5W6NW7N6N11N12E7NE9E11E11E10E10E7E10SE6SE5S5SE3CalmCalmE4Calm
2 days agoSW6SW4W3W3W6W5W8NW6N5N5N5N4N5CalmW6W6W5W4CalmSW3SW3SW4W5W4

Tide / Current Tables for Sewells Point, Hampton Roads, Virginia
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Chesapeake Bay Entrance, Virginia Current
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Chesapeake Bay Entrance
Click for Map
Mon -- 12:56 AM EDT     -0.00 knots Slack
Mon -- 04:20 AM EDT     -1.47 knots Max Ebb
Mon -- 05:50 AM EDT     Sunrise
Mon -- 07:03 AM EDT     Moonset
Mon -- 07:32 AM EDT     0.00 knots Slack
Mon -- 09:43 AM EDT     0.70 knots Max Flood
Mon -- 12:29 PM EDT     -0.00 knots Slack
Mon -- 04:14 PM EDT     -1.40 knots Max Ebb
Mon -- 07:14 PM EDT     0.00 knots Slack
Mon -- 08:26 PM EDT     Sunset
Mon -- 09:59 PM EDT     Moonrise
Mon -- 10:03 PM EDT     1.24 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.5-0-0.6-1.2-1.4-1.4-1-0.30.20.60.70.50.2-0.2-0.7-1.2-1.4-1.3-0.9-0.20.511.21.1

Weather Map
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wmap_A
GEOS Local Image of Mid-Atlantic    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wakefield, VA (3,6,7,8)
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Ground Weather Radar Station Wakefield, VA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.