Monday, October18, 2021
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Marine Weather and Tides
Mineral, 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 7:20AMSunset 6:29PM Monday October 18, 2021 4:49 PM EDT (20:49 UTC) Moonrise 4:55PMMoonset 4:14AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 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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ANZ536 Tidal Potomac From Indian Head To Cobb Island- 437 Pm Edt Mon Oct 18 2021
.small craft advisory in effect until 8 pm edt this evening...
Rest of this afternoon..NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
Tonight..NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Tue..W winds 5 to 10 kt. Waves 1 ft.
Tue night..SW winds 5 to 10 kt. Waves 1 ft.
Wed..W winds 5 kt. Waves less than 1 ft.
Wed night..SW winds around 5 kt. Waves 1 ft.
Thu..SW winds 5 to 10 kt. Waves 1 ft.
Fri..NW winds around 5 kt. Waves 1 ft. A chance of showers through the night.
ANZ500 437 Pm Edt Mon Oct 18 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build overhead through the middle portion of the week before a cold front approaches for late in the week. Small craft advisories may be necessary Tuesday night, then again Thursday and Thursday night.


7 Day Forecast for Marine Location Near Mineral, VA
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location: 38.06, -77.75     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 181900 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 300 PM EDT Mon Oct 18 2021

SYNOPSIS. High pressure is expected to slowly build eastward across the southeastern US through the middle of the week. A cold front will likely cross the region late in the week.

NEAR TERM /THROUGH TONIGHT/. High pressure is located over the lower Mississippi Valley this afternoon while low pressure persists over the Canadian Maritimes. Gusty northwest winds up to 20-30 mph at times continue between these systems. Mid level moisture associated with this system is gradually retreating, with partly cloudy skies confined generally northeast of the Potomac River. These clouds should dissipate around or shortly after sunset.

The center of the high will move toward the southern Appalachians tonight. The pressure gradient will weaken, so most areas should decouple to some extent, although a light westerly wind may persist. With clear skies expected, the most sheltered locations could drop close to the dew points the mid 30s as was seen this morning. Besides marginal temperatures, the limiting factor for frost is stronger winds around 1000 ft AGL, which may promote some turbulence in the boundary layer. Therefore kept only a patchy frost mention in the forecast, but trends will be monitored this evening. The most likely areas to see some patchy frost would be the central Shenandoah Valley and the Culpeper Basin (Virginia Piedmont). Most other locations will be in the 40s.

SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/. Tuesday and Wednesday will feature a warming trend of a few degrees each day as the surface high continues to slide eastward off the southeast coast and shortwave ridging builds overhead. A still-noticeable wind will remain Tuesday (gusts 15-20 mph), but should be light thereafter. Dry weather is expected, with only a few passing patches of high clouds. Low pressure will be moving into the Great Lakes by Wednesday night, but any precipitation is expected to remain well to the west.

LONG TERM /THURSDAY THROUGH MONDAY/. A weak front will pass through our region late Thursday into Friday. This front will not have much moisture to work with given the lack of return flow on the backside of the departing high pressure. There will be some shower activity and perhaps a rumble of thunder in parts of the northwest. There should be better shear than instability, so gusty winds could be the main threat with any thunderstorms that develop late Thursday into Thursday evening. Temperatures will warm into the middle 70s ahead of the front with overnight lows in the 50s.

A secondary front could pass across the region Friday evening into Saturday, but is expected to be the weaker of the two. High temperatures Friday may only reach the 60s prior to dropping into the upper 30s to lower 40s Friday night.

The cooler air continues Saturday into Sunday as high pressure builds on the north side of the departing cold front. Dry conditions most likely could lead into some frost or freeze conditions Saturday night and early Sunday. While the chilly air lingers Sunday into Sunday night, some light rain could develop along and on the north side of the front to the south Sunday night.

AVIATION /19Z MONDAY THROUGH SATURDAY/. VFR through Wednesday night as high pressure builds across the southeastern states. Gusty NW winds reaching 20-25 knots (briefly/isolated higher than that) will subside with sunset this evening. Cumulus across the Baltimore/Washington area will dissipate around the same time, with only passing cirrus through the middle of the week. Winds should be mostly sub-20 knots on Tuesday, and mostly below 15 knots Wednesday.

VFR conditions Thursday through Friday night. A stray shower or two may not be enough to reduce conditions to MVFR near MRB on Thursday. Winds southwest 5 to 10 knots Thursday and Thursday night. Winds becoming northwest 5 to 10 knots Friday.

MARINE. Brisk northwesterly flow will only gradually wane over the next 36 hours. SCA will be in effect for all waters through 8 PM this evening, with a few gusts in the 25-30 knot occurring. Winds should subside on the sheltered waters tonight, but remain elevated on the bay and lower Potomac. Overall winds will trend downward Tuesday, but will still be near SCA thresholds. Expanded the area of the existing SCA to cover more of the waters. The Potomac will be close, but wind fields are slightly lower there. Winds are uncertain Tuesday night, as westerly flow will remain elevated just off the surface and could mix down with cool air over the warmer waters. It does appear light winds are likely Wednesday with high pressure centered near South Carolina.

Winds southwest around 10 knots Thursday and Thursday night and gusts could approach SCA criteria on portions of the waters. Winds becoming northwest 10 knots Friday and Friday evening.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 6 PM EDT Tuesday for ANZ530>534-537- 539>541-543. Small Craft Advisory until 8 PM EDT this evening for ANZ535- 536-538-542. Small Craft Advisory from 9 AM to 6 PM EDT Tuesday for ANZ538.

SYNOPSIS . RCM NEAR TERM . ADS SHORT TERM . ADS LONG TERM . KLW AVIATION . ADS/KLW MARINE . ADS/KLW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 42 mi50 min W 4.1G8 70°F 67°F1013.2 hPa (-2.0)
PPTM2 - 8578240 - Piney Point, MD 65 mi50 min NW 12G13
LWTV2 - 8635750 - Lewisetta, VA 68 mi50 min NW 15G18 67°F 67°F1014.2 hPa (-1.7)
WASD2 - 8594900 - Washington, DC 68 mi50 min WNW 11G17 69°F 69°F1013.2 hPa (-1.7)

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Louisa, Louisa County Airport/Freeman Field, VA13 mi55 minW 810.00 miFair68°F41°F37%1016.3 hPa
Orange, Orange County Airport, VA20 mi55 minW 810.00 miFair70°F34°F27%1014.6 hPa
Fredericksburg, Shannon Airport, VA22 mi55 minWSW 810.00 miFair70°F38°F30%1013.5 hPa

Link to 5 minute data for KLKU

Wind History from LKU (wind in knots)
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Last 24hrNW8NW5W5W4W4SW4W5SW3SW4SW3SW4SW5SW4S4SW4SW5SW4W7W6W9W10W11
G15
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1 day ago0NW7W7NW10
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W4W300W4W3W5W50W6W3SW4S4W8W6W10
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2 days agoSE3SE4SE4S4S4S6S4S4S4S3S3S4S4S4S5S4S6S6S8
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W8NW4

Tide / Current Tables for Massaponax, Rappahannock River, Virginia
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Massaponax
Click for Map
Mon -- 01:06 AM EDT     0.14 feet Low Tide
Mon -- 05:12 AM EDT     Moonset
Mon -- 06:12 AM EDT     2.77 feet High Tide
Mon -- 07:21 AM EDT     Sunrise
Mon -- 01:32 PM EDT     0.11 feet Low Tide
Mon -- 05:54 PM EDT     Moonrise
Mon -- 06:27 PM EDT     Sunset
Mon -- 06:36 PM EDT     2.83 feet High 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 Fredericksburg, Rappahannock River, Virginia
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Fredericksburg
Click for Map
Mon -- 12:50 AM EDT     0.16 feet Low Tide
Mon -- 05:12 AM EDT     Moonset
Mon -- 06:21 AM EDT     3.17 feet High Tide
Mon -- 07:22 AM EDT     Sunrise
Mon -- 01:16 PM EDT     0.13 feet Low Tide
Mon -- 05:54 PM EDT     Moonrise
Mon -- 06:27 PM EDT     Sunset
Mon -- 06:45 PM EDT     3.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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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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