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Marine Weather and Tides Kings Park, 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.

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Sunrise 6:42AM

Sunset 7:40PM

Tuesday April 7, 2020 8:54 AM EDT (12:54 UTC)

Moonrise 6:18PM

Moonset 5:47AM

Illumination 100%

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.

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7 Day Forecast for Marine Location Near Kings Park, VA

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Area Discussion for - Baltimore, MD/Washington

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FXUS61 KLWX 070729 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 329 AM EDT Tue Apr 7 2020

SYNOPSIS. A weak boundary overhead this morning will lift northeast as a warm front later today through tonight. A series of upper-level disturbances will track along the boundary during this time. A weak cold front will pass through Wednesday followed by a much stronger cold front for Thursday. Canadian high pressure will gradually build overhead for late this week before low pressure possibly impacts the area early next week.

NEAR TERM /THROUGH TONIGHT/. Mid to high level clouds are slowly overspreading southeastward into our region this morning. Some showers are showing up on our radar over the north west parts of our forecast area but I don't believe any of the radar returns are making it to the ground as observations near these showers indicate 5 to 10 degree dewpoint depressions which suggests a low level dry layer. Any precipitation should evaporate before it hits the ground but will help to moisten the layer.

A weak frontal boundary positioned over region this morning will lift northward by the this morning. Winds will become more southwesterly after the front moves to our north leading to increased advection of warm and moist air. Dewpoints will increase up into 50s which will lead to more potential energy that can be tapped into once diurnal heating occurs. Good diurnal heating today will lead to good low and mid level lapse rates which may lead to destabilization in the atmosphere. The best areas for destabilization will be west and southwest of the DC metro. An upper level disturbance will kick off a Mesolow/MCS over Michigan this morning and drop it southeastward into our region early this afternoon and into this evening. The first bands from this MCS is expected to start affecting our region as early as late this morning. As this system moves through our region, showers will be likely with scattered strong to severe thunderstorms with a main severe threat of damaging winds and large hail. HiRes models are indicating the best period for thunderstorm development to be the 18Z to 3Z period this afternoon and evening. The MCS will mainly affect parts of northern Virginia, Maryland and West Virginia but showers and thunderstorm development in central Virginia is a good possibility due to destabilization due to daytime heating. It will be tough to determine exactly where and when showers and thunderstorms will develop and whether they will be severe. The best area for storms looks to be the area south of I-270 and north of Charlottesville.

Some models have another round showers and thunderstorms occurring during the Tuesday overnight periods and into early Wednesday due to the frontal boundary to our north dropping southward again. Showers are likely overnight with a chance for thunderstorms through 12Z Wednesday. We can't rule out some of these storms producing damaging winds and isolated hail.

SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/. A brief dry period is expected during the mid to late afternoon periods as the front moves to our south once again. Some wedging of cooler air is being indicated by some models which suggest that shower and thunderstorm threat could be limited north of the boundary especially with a westerly flow aloft. Before boundary fully moves to our south, showers and thunderstorms could form along the boundary and move through our area. There is potential with daytime temps expected to be in the mid to upper 70s to low 80s on Wednesday that these storms could become strong to severe and produce gusty winds and isolated hail.

A stronger cold front will move through our region on Thursday. This system will be coupled with a strong upper level jet moving northward into our region. The jet may be positioned just right that our area falls in the favorable left exit region. The best chance for thunderstorm development would likely be over portions of central Virginia and southern Maryland where temps may be able to rise high enough to destabilize the environment. There still remains a lot of uncertainty on whether storms will be able to develop but a period of rain from 12Z to about 22Z is likely as the cold front moves through our region. As the front passes through our area, the pressure surge will lead to increased winds leading to periods of 25 to 35 mph gusts. These winds should weaken Thursday evening and into early Friday as the front continues to lift northeastward out of our region. A cooler air mass will move in behind the frontal passage.

LONG TERM /FRIDAY THROUGH MONDAY/. An upper-level trough will remain overhead Friday while Canadian high pressure builds toward the area from the northwest. Strong low pressure will remain near the Canadian Maritimes. A strong gradient between the low over the Maritimes and the high over the Midwest will allow for gusty northwest winds. These northwest winds will usher in chilly conditions for this time of year. Max temps are forecast to range from the 40s in the mountains to the 50s for most other locations.

High pressure will build overhead Friday night through Saturday night, bringing dry and chilly conditions. Frost and freeze headlines may be warranted, with the coldest conditions most likely Friday night. However, confidence is low due to the fact that a steadier wind may hold in place for many areas.

The upper-level trough will amplify over the central CONUS Sunday through Monday while high pressure moves offshore. A return flow will develop, and low pressure is likely to impact the area during this time. Moisture from the Gulf of Mexico may get drawn into this system, bring the threat for heavier showers and thunderstorms. However, confidence is low at this time.

AVIATION /07Z TUESDAY THROUGH SATURDAY/. Mid to high level clouds will overspread all terminals this morning. Winds will become west to southwesterly but remain light today. Showers and thunderstorms will move into our region during the early afternoon periods today and continue on and off through this evening. It is hard to pinpoint when and where storms will affect terminals but I have tried include a mention of showers in the TAF's to indicate the ideal period for when the first round showers should affect our terminals. Storms have the potential to product strong gusty winds, hail and lightning. Some brief restrictions within storms are likely. Another round of showers and thunderstorms will be possible during the overnight periods and into early Wednesday.

Showers and thunderstorms will continue to be possible again Wednesday morning but a break in precipitation is expected for all terminals during the Wednesday afternoon and evening periods before another round of showers and thunderstorms occurs on Thursday. These storms have the potential to produce gusty winds. As a cold front passes through all the terminals on Thursday, winds will pick up with gusts as high 30 to 35 knots possible. Wind gusts will remain elevated through Thursday afternoon but will start weakened Thursday evening and into early Friday. No major restrictions expected through the short term but brief periods of MVFR can't be ruled out.

High pressure will build overhead for Friday and Saturday. Gusty northwest winds Friday will gradually diminish Friday night.

MARINE. Showers and thunderstorms will affect our marine areas this afternoon which may require special marine warnings. More showers and thunderstorms will be possible on Wednesday along with gradient winds. A cold front will pass through our waters on Thursday bringing strong and gusty winds to all our marine areas. Small Craft Advisories will likely be needed Wednesday afternoon through Thursday with a possibility for a Gale Warning on Thursday.

High pressure will build overhead for Friday and Saturday. Gusty northwest winds Friday will gradually diminish through Saturday night. An SCA will likely be needed for the waters during this time. A Gale Warning may be needed for portions of the waters Friday.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . BJL NEAR TERM . JMG SHORT TERM . JMG LONG TERM . BJL AVIATION . BJL/JMG MARINE . BJL/JMG

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
WASD2 - 8594900 - Washington, DC	14 mi	55 min	S 5.1 G 6	57°F	58°F		1014.7 hPa (-0.5)
BSLM2 - Chesapeake Bay, MD	30 mi	145 min	SSW 1				1014 hPa
NCDV2	35 mi	61 min	SE 2.9 G 4.1	55°F	57°F		1014.6 hPa
APAM2 - 8575512 - Annapolis, MD	44 mi	55 min		55°F			1014.2 hPa (-0.4)
TPLM2 - Thomas Point, MD	45 mi	55 min	SSE 12 G 12	54°F	53°F		1015.5 hPa (-0.5)	53°F
44062 - Gooses Reef, MD	48 mi	31 min	S 9.7 G 12	54°F			978.8 hPa
BLTM2 - 8574680 - Baltimore, MD	49 mi	55 min	SW 1 G 1.9	55°F	55°F		1014.4 hPa (-0.0)
CPVM2	49 mi	55 min		55°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD	49 mi	55 min	Calm G 1.9	55°F			1014.8 hPa (-0.0)
FSNM2	49 mi	67 min	Calm G 1.9	56°F			1014.6 hPa

Wind History for Washington, DC

(wind in knots)    EDIT      (on/off)   Help

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N5 G9

N6 G12

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NW2 G10

NW5

NW7 G10

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SE3

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SE2 G5

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Fort Belvoir, VA	7 mi	59 min	N 0	10.00 mi	Mostly Cloudy	53°F	48°F	85%	1015.2 hPa
Washington/Reagan National Airport, DC, VA	13 mi	63 min	S 7	10.00 mi	Overcast	56°F	51°F	84%	1014.7 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA	14 mi	59 min	N 0	10.00 mi	Overcast	52°F	51°F	97%	1015.4 hPa
Washington/Dulles International Airport, DC, VA	15 mi	63 min	S 4	10.00 mi	Mostly Cloudy	55°F	50°F	83%	1014.4 hPa
Quantico Marine Corps Airfield - Turner Field, VA	20 mi	4 hrs	SSW 3	8.00 mi	Fair	55°F	48°F	80%	1015.3 hPa
Camp Springs / Andrews Air Force Base, MD	21 mi	59 min	S 6	10.00 mi	Overcast	54°F	49°F	85%	1014.9 hPa
College Park Airport, MD	22 mi	69 min	N 0	10.00 mi	Overcast	51°F	49°F	94%	1014.6 hPa

Link to 5 minute data for KDAA

Wind History from DAA (wind in knots)

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N5

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NW10 G15

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Calm

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Tide / Current Tables for Marshall Hall, Potomac River, Maryland

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Tide / Current Tables for Chain Bridge, one mile below, Washington, D.C.

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Weather Map

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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

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Wind Forecast for Baltimore, MD/Washington (8,2,3,4)

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Ground Weather Radar Station Sterling, VA

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