Saturday, April17, 2021
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Marine Weather and Tides
Tappahannock, VA

Version 3.4
NOTICE
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 6:29AMSunset 7:48PM Saturday April 17, 2021 6:36 PM EDT (22:36 UTC) Moonrise 8:48AMMoonset 12:00AM Illumination 34% Phase: Waxing Crescent; Moon at 6 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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ANZ537 Tidal Potomac From Cobb Island To Smith Point- 441 Pm Edt Sat Apr 17 2021
Rest of this afternoon..N winds 10 kt. Waves 1 ft.
Tonight..NW winds around 5 kt. Waves 1 ft. Scattered showers.
Sun..W winds 5 kt. Waves less than 1 ft.
Sun night..S winds around 5 kt. Waves flat. A chance of showers.
Mon..W winds around 5 kt. Waves 1 ft or less. A chance of showers.
Mon night..S winds 5 kt. Waves less than 1 ft.
Tue..S winds 10 to 15 kt. Waves 1 to 2 ft.
Wed..SW winds 10 to 15 kt...becoming nw. Waves 1 to 2 ft. A chance of showers in the morning, then showers likely through the night.
ANZ500 441 Pm Edt Sat Apr 17 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A broad area of low pressure will migrate from west to east near or south of the middle atlantic Sunday into Monday. High pressure will develop to the south Tuesday and a strong cold front will pass through Wednesday. A small craft advisory may be needed Tuesday. A gale warning may be needed for portions of the waters Wednesday afternoon into Wednesday night.


7 Day Forecast for Marine Location Near Tappahannock, VA
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location: 37.93, -76.86     debug


Area Discussion for - Wakefield, VA
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FXUS61 KAKQ 171953 AFDAKQ

AREA FORECAST DISCUSSION National Weather Service Wakefield VA 353 PM EDT Sat Apr 17 2021

SYNOPSIS. A weak disturbance will bring a chance for a few light rain showers late this afternoon and tonight. Another disturbance crosses the area late Sunday and into Monday, bringing another chance for showers.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. As of 350 PM EDT Saturday .

Latest analysis reveals sfc low pressure well offshore of the New England coast this aftn with weak sfc cold front/sfc trough oriented well offshore. Weak sfc high pressure is lingering over the mid- Atlantic/Carolina coast this afternoon. However, latest regional satellite/radar mosaic shows increasing clouds this aftn with some very light showers just west of the Hwy 15 corridor in the VA piedmont at 20z. These showers are out ahead of mid-level shortwave pushing across the central Appalachians now through early evening.

Have maintained slight to low end chance PoP for the late aftn into this evening, as weak mid level shortwave crosses the Appalachians this aftn, and slides across our area through this evening. Given antecedent dry airmass, showers will be along the lines of some iso-widely scattered very light showers or sprinkles as the shortwave pushes across the region. Chances for measuring precipitation (20-30%) are highest along and just north of I-64 tonight, and even at that, on the order of a few hundredths at worst. Sky clears out late tonight into Sunday morning, with early morning lows in the 40s to near 50 degrees.

SHORT TERM /6 AM SUNDAY MORNING THROUGH TUESDAY NIGHT/. As of 230 PM EDT Saturday .

First shortwave pushes offshore to begin the day Sunday, with subsidence behind the system bringing a short-lived period of clearing Sunday morning. Still anticipate cloud thickening/lowering all over again Sun aftn and night, as next shortwave currently over the middle MS Valley pushes across the area later Sun/Sun night. Rain chances ramp up once again Sunday night into Monday. The best rain chances right now appear to be after sunset Sun night into Monday morning. There is the potential for a third period of light rain possible on Monday over Hampton Roads and NE NC, as the ECMWF continues to develop a weak sfc wave along the sfc trough. However, majority of CAMs and the EPS are quite a bit lower with QPF. And have accordingly maintained PoPs no higher than 40% in the forecast for the time being. Drier weather is expected by Monday night through Tuesday as high pressure returns to the region, ahead of the next frontal system for midweek.

Highs on Sunday will range from the mid to upper 60s across the area. Highs Monday in the mid 60s to low 70s. A bit milder on Tuesday ahead of the front, with highs in the upper 60s to mid 70s. Early morning lows in the 40s inland to near 50 degrees along the coast.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. As of 230 PM EDT Saturday .

Potent mid-upper trough and attendant sfc cold front crosses the region later Wednesday into Thursday morning. With the sfc low and best lift/dynamics to our north, still enough in the way of instability to warrant t-storm mention along and east of 95 late Wed aftn and evening. Pressure falls behind the frontal passage will bring a cool night Wed night, after highs Wednesday in the 60s to low 70s. BL should remain well-mixed, but there is potential for frost or freeze headlines for inland portions of the area Thursday morning with temperatures potentially dropping into the low to mid 30s inland. Thursday will be dry, but cool and breezy. Highs Thursday are generally in the lower 60s and Thursday night will be another cool night with potential frost/freeze issues with winds diminishing and sky clearing out. Remaining dry Friday with sfc high pushing offshore. Resultant return flow allows temperatures to moderate slightly some, but still below average, with highs in the mid to upper 60s.

Rain chances increase into next weekend with a southern stream system lifting from the mid south across the Carolinas. Kept PoPs low (20-30%) at this time range.

AVIATION /20Z SATURDAY THROUGH THURSDAY/. As of 120 PM EDT Saturday .

VFR conditions across area terminals this afternoon will persist through the 18z TAF period. Clouds will increase this aftn into the evening with bases around 4 to 7k ft AGL. A isolated light rain shower/sprinkle cannot be ruled out, but conditions will remain VFR. Sky gradually clears from west to east overnight into early Sun morning.

OUTLOOK . VFR conditions continue for Sunday, with another weak system bringing chances for iso-widely sct showers Sunday aftn through Monday morning.

MARINE. As of 230 PM EDT Saturday .

Weak high pressure is over the area today. A light onshore flow has developed this afternoon with winds 5-10 kts. Waves in the bay around a foot and seas 2-3 ft. Several weak fronts/disturbances will move through the area over the next several days. One front moves through tonight, another one Sunday night, and then a shortwave Monday afternoon into evening. This will result in variable wind directions over the area waters, but wind speeds will generally remain 10 kts or less. Southerly flow is expected on Tuesday as high pressure moves off the coast and winds increase to 10-15 kts. Waves Sunday through Tuesday remain around a foot and seas 2-3 ft. Strong cold front moves through the area late Wednesday, with SCA winds/seas likely behind the front lasting through Thursday.

AKQ WATCHES/WARNINGS/ADVISORIES. MD . None. NC . None. VA . None. MARINE . None.

SYNOPSIS . MAM NEAR TERM . MAM SHORT TERM . AJB/MAM LONG TERM . AJB/MAM AVIATION . AJB/MAM MARINE . CMF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LWTV2 - 8635750 - Lewisetta, VA 21 mi48 min ESE 9.9 G 11 56°F 58°F1009.9 hPa
PPTM2 - 8578240 - Piney Point, MD 22 mi48 min ENE 5.1 G 7
44042 - Potomac, MD 29 mi30 min E 3.9 G 5.8 56°F 58°F1010.4 hPa
NCDV2 29 mi48 min N 2.9 G 5.1 60°F 61°F1009 hPa
SLIM2 - 8577330 - Solomons Island, MD 35 mi48 min N 5.1 G 7 58°F 58°F1009.4 hPa
YRSV2 - Chesapeake Bay,VA 37 mi66 min ESE 1 62°F 1010 hPa48°F
COVM2 - 8577018 - Cove Point LNG Pier, MD 41 mi48 min N 7 G 9.9 55°F 1009.6 hPa
BISM2 - 8571421 - Bishops Head, MD 48 mi48 min N 5.1 G 7 60°F 61°F1009.4 hPa
44062 - Gooses Reef, MD 49 mi36 min NE 9.7 G 9.7 52°F 55°F1011 hPa (-0.4)

Wind History for Lewisetta, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tappahannock-Essex County Airport, VA5 mi41 minNNE 410.00 miOvercast61°F41°F48%1009.5 hPa

Link to 5 minute data for KXSA

Wind History from XSA (wind in knots)
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Last 24hrW3NW5N6NW3NW3CalmCalmCalmCalmCalmCalmCalmCalmCalmN4CalmNW3N3W3W7CalmNW3N4NE4
1 day agoNW3NW12
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NW7NW5NW3NW4CalmCalmCalmCalmCalmCalmCalmSW3W6SW6W8W6
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2 days agoE6NE5NE4CalmN3NE4SE5E5CalmCalmCalmCalmCalmCalmW3N5CalmSW3CalmW6W4NW7
G17
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Tide / Current Tables for Tappahannock, Rappahannock River, Virginia
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Tappahannock
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Sat -- 12:13 AM EDT     Moonset
Sat -- 05:31 AM EDT     1.81 feet High Tide
Sat -- 06:28 AM EDT     Sunrise
Sat -- 09:47 AM EDT     Moonrise
Sat -- 12:42 PM EDT     0.34 feet Low Tide
Sat -- 05:56 PM EDT     1.52 feet High Tide
Sat -- 07:45 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.81.21.61.81.81.61.41.10.80.50.40.30.50.81.21.41.51.41.310.70.5

Tide / Current Tables for Wares Wharf, Rappahannock River, Virginia
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Wares Wharf
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Sat -- 12:13 AM EDT     Moonset
Sat -- 04:58 AM EDT     1.91 feet High Tide
Sat -- 06:28 AM EDT     Sunrise
Sat -- 09:47 AM EDT     Moonrise
Sat -- 11:57 AM EDT     0.37 feet Low Tide
Sat -- 05:23 PM EDT     1.60 feet High Tide
Sat -- 07:45 PM EDT     Sunset
Sat -- 11:47 PM EDT     0.36 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.71.11.51.81.91.81.61.30.90.60.40.40.50.71.11.41.61.61.41.20.90.60.4

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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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