Thursday, February20, 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 6:47AMSunset 5:51PM Thursday February 20, 2020 9:06 PM EST (02:06 UTC) Moonrise 5:09AMMoonset 3:04PM Illumination 7% Phase: Waning Crescent; Moon at 27 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- 627 Pm Est Thu Feb 20 2020
.small craft advisory in effect through Friday evening...
Tonight..N winds 10 to 15 kt, increasing to 20 to 25 kt with gusts up to 35 kt. Waves around 2 ft, building to 3 to 4 ft late. Rain early this evening. Snow until early morning, then a slight chance of snow late. Vsby 1 to 3 nm this evening.
Fri..N winds 20 to 25 kt, diminishing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Waves 4 to 5 ft.
Fri night..N winds 10 to 15 kt, becoming nw 5 to 10 kt after midnight. Waves 2 to 3 ft, subsiding to 1 foot late.
Sat..SW winds 5 to 10 kt. Waves 1 foot.
Sat night..W winds 5 to 10 kt. Waves 1 foot.
Sun..W winds 5 kt, becoming S in the afternoon. Waves 1 foot.
Sun night..SW winds 5 to 10 kt. Waves 1 foot.
Mon..S winds 5 to 10 kt. Waves 1 foot.
Mon night..S winds 10 kt. Waves 1 foot. Showers likely.
Tue..S winds 10 kt. Waves 1 foot. Showers likely.
Tue night..SW winds 5 to 10 kt, becoming W after midnight. Waves 1 foot. A chance of showers.
ANZ652 Coastal Waters From Chincoteague To Parramore Island Va Out 20 Nm- 627 Pm Est Thu Feb 20 2020
.small craft advisory in effect from 10 pm est this evening through Friday evening...
Tonight..NE winds 10 to 15 kt, becoming N 25 to 30 kt. Seas around 2 ft with a dominant period of 6 seconds, building to 5 to 6 ft with a dominant period of 6 seconds late this evening and overnight. Rain and snow likely this evening, then a chance of rain and snow after midnight. A slight chance of rain late.
Fri..N winds 20 to 25 kt with gusts up to 35 kt, diminishing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 6 to 7 ft with a dominant period of 7 seconds.
Fri night..N winds 10 to 15 kt, becoming nw 5 to 10 kt after midnight. Seas 4 to 5 ft with a dominant period of 7 seconds.
Sat..W winds 10 to 15 kt. Seas 3 to 4 ft with a dominant period of 8 seconds.
Sat night..SW winds 10 to 15 kt, becoming W 5 to 10 kt late. Seas 3 to 4 ft.
Sun..W winds 5 to 10 kt, becoming sw in the afternoon. Seas around 3 ft.
Sun night..SW winds 5 to 10 kt. Seas around 3 ft.
Mon..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas around 3 ft.
Mon night..S winds 10 to 15 kt. Seas around 3 ft. A chance of showers.
Tue..S winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely.
Tue night..SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 4 to 5 ft. A chance of showers.


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 210037 AFDAKQ

AREA FORECAST DISCUSSION National Weather Service Wakefield VA 737 PM EST Thu Feb 20 2020

SYNOPSIS. Low pressure moves off the Carolina coast tonight. High pressure returns for the weekend.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/. As of 335 PM EST Thursday .

Erosion of the low level dry air occurring now and lgt mixed pcpn has made across most of srn VA into NE NC. The HRRR from Wed morning nailed it (temperatures rising into the 40s . and period of RA or mixed RA/SN this afternoon). The transition from mixed RA/SN to SN will be occurring through early/mid this evening. Beginning to see W-E banding on radar and w/ 800-700mb frontogenesis expected to push across srn/SE VA and NE NC . mdt to hvy SN is expected. Have made no changes to headlines attm . and only minor adjustments to SN accums (after WPC/WFO coord). Highest totals expected over interior SE VA and into most of NE NC (excluding the Outer Banks/in VA along the bay/ocean). Will likely lose some accum due to melting (temperatures above freezing/warm ground). Intensity of pcpn expected to pick up this evening and have used the model Kuchera SLR over standard 10:0 SLR to aid in accum fcst. Dry air will hang on across the nrn 1/3rd but kept flurries or SLGT CHC -SN those areas w/ little or no accum.

Lo pres will be strengthening off the SE CONUS tonight. Becoming windy . NNE winds to gust to 30-40 mph at the immediate coast. SN will taper off WNW to ESE after midnight and partial clearing will begin. Temperatures falling to or just blo freezing this evening . then lows tonight 20-25 central/W and NE to the u20s- around 30F far SE.

SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/. As of 335 PM EST Thursday .

Any pcpn over far SE VA-coastal NE NC quickly ends early Fri morning Otw. hi pres and clearing out for Fri . though cold w/ highs in the u30s-l40s (l-m30s over areas that have SN cover). N winds remaining breezy at the coast. After a chilly night Fri night w/ the center of sfc hi pres arriving late . Sat will be dry w/ more seasonable conditions. Lows Fri night from the l-m20s inland to the u20s-around 30F at the coast. Highs Sat in the u40s-l50s.

Sfc hi pres remains near or just SE of the local area Sat night through Sun as the next storm system begins to take shape INVOF central Plains. Winds turn SSW leading to continued moderation w/ little clouds. SKC Sat night w/ near calm conditions. Lows in the m-u20s inland to the l30s right along the immediate coast in ern/SE VA and coastal NE NC. Mostly sunny and mild Sun w/ highs mainly 55-60F . though cooler along the bay/ocean.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/. As of 255 PM EDT Thursday .

Low pressure tracks NE through the Ohio Valley late Monday into Tuesday. The trailing cold front will result in scattered rain showers with PoPs increasing to 60-75% by Tuesday. This system will be followed by stronger low developing Wednesday/Thursday along a deep trough moving into the region. This system is developing in a much stronger kinematic environment but current model consensus is that the low will track inland, and therefore it is expected bring only rain into the CWA Wednesday into early Thursday. High pressure moves in Thursday.

Low temps Sun night will range from the low 30s in the piedmont to the upper 30s along the coast. Low temps Mon and Tues nights will range from the low 40s in the NW to the upper 40s to low 50s in the SE. Low temps Wed night will range from the mid 30s in the NW to the low 40s in the SE. Low temps on Thurs night will be the coldest of the long term period with mid-20s in the NW and low 30s in the SE. High temps Mon will range from the mid-50s in the NW to around 60F in the SE. High temps Tues and Wed will range from the upper 50s in the NW to the mid-60s in the SE. High temps on Thurs will range from the upper 40s in the NW to the mid-50s in the SE.

AVIATION /00Z FRIDAY THROUGH TUESDAY/. As of 730 PM EST THURSDAY .

Latest radar showed main area of pcpn, mostly just snow everywhere except mixed rain/snow at coastal SE VA/NE NC, was shifting into mainly SE/scntrl VA and NE NC. Except for SBY, where VFR conditions currently exist and will continue this evening into Fri evening, MVFR or IFR conditions prevailed at the other TAF sites. RIC will improve to VFR conditions in the next two hours with any light snow or flurries ending. While PHF/ORF/ECG will continue with mainly IFR conditions until at least 06Z-08Z, with snow gradually tapering off and ending from NW to SE at these sites through 11Z Fri morning. VFR conditions prevail everywhere after 12Z Fri.

Winds are currently NE/N at 5-15 kt, but are expected to become N and increase at all the TAF sites later this evening into midday Fri, as the storm system moves out to sea and high pressure builds in from the WNW. Expect winds of 10-15 kt by early Friday at RIC/SBY, 10-15 kt with gusts to 25 kt at PHF, and 15-20 kt with gusts to 30 kt at ORF/ECG.

OUTLOOK . VFR conditions prevail Fri evening through Sun, as high pressure builds over the area then slides offshore. Rain showers and possible flight restrictions will be possible Mon aftn into Tue aftn, as a cold front approaches and moves through the region.

MARINE. As of 250 PM EST Thursday .

Winds are N/NE 5-15 kts this afternoon as a weak high sits over the northeast and low pressure is off the SE coast. Waves in the bay 1-2 ft and seas 3-5 ft. Wind speeds will increase this evening as the low moves closer to the region off the Carolina coast and a strong 1044 mb high builds in over the center of the country, resulting in a tightening of the pressure gradient across area waters. Winds overnight and Friday morning will be 20-30 kts with gusts up to 40 kts for Currituck Sound and the southern coastal waters south of Cape Charles. Waves/Seas will also start building tonight and by Friday morning and early afternoon expect 2-4 ft waves in the bay with around 5 ft at the mouth of the bay, and seas 5-9 ft with the highest seas over the southern coastal waters.

Only minor timing adjustments to the headlines. Moved the start time for the Gale warning for Currituck sound up to 00Z tonight, and extended the SCA for the lower bay and coastal waters off the lower VA eastern shore out a few hours. Currently, the Gale Warnings for Currituck Sound and southern coastal waters go from 00Z tonight until 21Z Friday, with SCA's likely needed for at least the southern coastal waters beyond 21Z for lingering seas. The SCA for the lower bay goes from 00Z tonight until 00Z Saturday, and 03Z to 21Z for the upper bay. The SCA for the rivers goes from 05Z to 18Z Saturday, and 03Z to 21Z Saturday for the lower James. Finally, the SCA for the northern coastal waters starts at 03Z and goes until 03Z Saturday for zones ANZ650/652 and 06Z Saturday for zone ANZ654.

Winds will begin to subside late Friday morning as the low moves away from the area and high pressure shifts over to the OH valley. By late Friday evening the bay should fall below SCA criteria. Conditions improve for the weekend as high pressure remains in control, however SCA's for lingering high seas will likely remain for the coastal waters through Saturday.

AKQ WATCHES/WARNINGS/ADVISORIES. MD . None. NC . Winter Storm Warning until 7 AM EST Friday for NCZ012>017- 030>032. Winter Weather Advisory until 7 AM EST Friday for NCZ102. Wind Advisory until 1 PM EST Friday for NCZ102. High Surf Advisory from 4 AM to 7 PM EST Friday for NCZ102. VA . Winter Storm Warning until 7 AM EST Friday for VAZ087>090-092- 093-095>098-523>525. Winter Weather Advisory until 7 AM EST Friday for VAZ065>068- 078>086-099-100-512>516-518-520. MARINE . Small Craft Advisory until 1 AM EST Saturday for ANZ654. Gale Warning until 4 PM EST Friday for ANZ633-656-658. Small Craft Advisory until 10 PM EST Friday for ANZ650-652. Small Craft Advisory from midnight tonight to 1 PM EST Friday for ANZ635>637. Small Craft Advisory until 7 PM EST Friday for ANZ632-634. Small Craft Advisory until 4 PM EST Friday for ANZ630-631-638.

SYNOPSIS . MPR NEAR TERM . ALB SHORT TERM . ALB LONG TERM . ALB AVIATION . RMM/TMG MARINE . AJB/JDM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SWPV2 - 8638610 - Sewells Point, VA 1 mi55 min 48°F1027.9 hPa
CRYV2 - 8638595 - South Craney Island, VA 3 mi49 min NNE 16 G 19 35°F 1027.5 hPa
WDSV2 - 8638614 - Willoughby Deguassing , VA 4 mi55 min NNE 19 G 22 34°F 1027.7 hPa
DOMV2 - 8638511 - Dominion Terminal Association, VA 5 mi49 min NE 1.9 G 4.1 33°F 1028.3 hPa
MNPV2 - 8639348 - Money Point, VA 11 mi55 min NNE 6 G 12 34°F 49°F1027.4 hPa
44087 12 mi37 min 45°F3 ft
44064 14 mi37 min NE 18 G 21 1027.2 hPa
CHBV2 16 mi55 min NE 16 G 19
CHYV2 - 8638999 - Cape Henry, VA 18 mi49 min N 22 G 26 35°F 1027.4 hPa
44072 19 mi37 min ESE 16 G 19 34°F
YKRV2 - 8637611 - York River East Rear Range Light, VA 22 mi49 min NNE 14 G 17 34°F 1029.2 hPa
YKTV2 - 8637689 - Yorktown, VA 22 mi55 min NNE 9.9 G 12 33°F 46°F1028.4 hPa
KPTV2 - 8632200 - Kiptopeke, VA 25 mi55 min N 8.9 G 12 45°F
44099 - Cape Henry, VA (147) 33 mi37 min 46°F4 ft
YRSV2 - Chesapeake Bay,VA 39 mi97 min NNE 2.9 31°F 1030 hPa31°F
WAHV2 - 8631044 - Wachapreague, VA 59 mi49 min N 2.9 G 6
44014 - VIRGINIA BEACH 64 NM East of Virginia Beach, VA 83 mi77 min NNE 23 G 27 41°F 50°F5 ft1025.4 hPa (-0.9)39°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 mi68 minNNE 132.50 miLight Snow Fog/Mist35°F33°F93%1028.4 hPa
Norfolk, Norfolk International Airport, VA8 mi76 minNNE 164.00 miLight Snow Fog/Mist36°F33°F89%1027.5 hPa
Langley Air Force Base, VA11 mi71 minNE 74.00 miLight Snow Fog/Mist33°F32°F100%1028.8 hPa
Newport News, Newport News / Williamsburg International Airport, VA17 mi73 minNNE 60.75 miLight Snow Fog/Mist34°F30°F85%1028.6 hPa
Virginia Beach, Oceana, Naval Air Station, VA18 mi71 minN 103.00 miLight Snow Fog/Mist33°F32°F96%1027.4 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi72 minN 32.50 miLight Snow32°F31°F99%1027.8 hPa
Fort Eustis / Felker, VA21 mi2.2 hrsN 70.50 miLight Snow Fog/Mist33°F30°F91%1028.4 hPa
Suffolk, Suffolk Municipal Airport, VA22 mi72 minNNE 41.50 miLight Snow33°F32°F100%1028.4 hPa

Link to 5 minute data for KNGU

Wind History from NGU (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmNE9NE12NE9NE12NE12NE12
G17
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1 day agoSW9SW6SW8W4W3NW7NW10N10N16
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2 days ago--E5CalmNE3NE3CalmCalmCalmCalmCalmNW3NW3CalmNW3SW8W8W64W5S4S6S6S6S8

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
Thu -- 12:14 AM EST     -1.15 knots Max Ebb
Thu -- 03:14 AM EST     0.00 knots Slack
Thu -- 05:07 AM EST     Moonrise
Thu -- 05:59 AM EST     0.88 knots Max Flood
Thu -- 06:47 AM EST     Sunrise
Thu -- 09:32 AM EST     -0.00 knots Slack
Thu -- 01:01 PM EST     -1.29 knots Max Ebb
Thu -- 03:02 PM EST     Moonset
Thu -- 04:13 PM EST     0.00 knots Slack
Thu -- 05:48 PM EST     Sunset
Thu -- 06:29 PM EST     0.60 knots Max Flood
Thu -- 09:28 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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-1.1-1.1-0.7-0.10.40.80.90.80.60.3-0.2-0.7-1.1-1.3-1.1-0.7-0.10.40.60.60.50.2-0.2-0.7

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 (21,6,7,8)
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Ground Weather Radar Station Wakefield, VA
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Disclaimer:
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.