Sunday, March7, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Passapatanzy, 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 6:30AMSunset 6:10PM Sunday March 7, 2021 6:49 PM EST (23:49 UTC) Moonrise 2:49AMMoonset 12:16PM Illumination 31% Phase: Waning Crescent; Moon at 24 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
    EDIT      (on/off)   Help
ANZ536 Tidal Potomac From Indian Head To Cobb Island- 340 Pm Est Sun Mar 7 2021
.small craft advisory in effect until 6 pm est this evening...
Rest of this afternoon..N winds 10 kt. Waves 1 ft.
Tonight..N winds around 5 kt. Waves 1 ft.
Mon..W winds 5 kt. Waves less than 1 ft.
Mon night..SW winds 5 kt. Waves less than 1 ft.
Tue..SW winds 5 kt. Waves less than 1 ft.
Tue night..S winds 5 kt. Waves less than 1 ft.
Wed..S winds 5 to 10 kt. Waves 1 ft.
Thu..SW winds 5 to 10 kt. Waves 1 ft.
ANZ500 340 Pm Est Sun Mar 7 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build in from the northwest through Monday, then gradually migrate offshore during the middle of the week. Small craft advisory conditions are possible at times during the second half of the week.


7 Day Forecast for Marine Location Near Passapatanzy, VA
   Hourly   EDIT   Help
location: 38.34, -77.31     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 071938 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 238 PM EST Sun Mar 7 2021

SYNOPSIS. A strong area of Canadian high pressure will continue to expand across the area through Monday before drifting offshore during the middle of the week. A cold front is expected to slowly approach from the north toward the end of the week.

NEAR TERM /THROUGH TONIGHT/. Northwest flow continues today, with below average temperatures continuing for this afternoon. High pressure is located just to our northwest, and will move directly overhead tonight. This has left very little in the way of cloud cover across the region.

The stubborn upper trough that has influenced our weather over the past several days will finally press offshore tonight. High pressure at the surface will follow within the zone of subsidence behind it. Temperatures will be quite cold tonight, with lows into the teens for most, except for the densely populated metro areas, which stay in the mid 20s. The more rural zones and sheltered valleys will get quite cold tonight as winds subside and clear skies prevail. One of the cooler nights this winter (even though it is almost spring . ).

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. Dry weather will continue for Monday and Tuesday, but with a very noticeable warming trend across the region. High pressure will slide by overhead during the day Monday, then offshore Monday night into Tuesday. Highs on Monday will be closer to seasonal averages, with low to mid 50s expected. For Tuesday, with high pressure offshore and southerly flow taking hold at the surface, highs soar into the mid to upper 60s. There may be a few more passing clouds on Tuesday as a very weak disturbance approaches from the west, but overall more sunshine than clouds is still expected.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. High pressure is forecast to have moved well offshore by Wednesday as a strong upper-level ridge builds across the eastern United States. Southwesterly return flow is expected to push temperatures to 15 to 20 degrees above normal during the second half of the week, possibly approaching 70 degrees during the afternoon hours at times.

A few clouds are possible as a weak upper-level disturbance in the jet stream crosses Thursday, but otherwise dry and mainly clear conditions are forecast until a cold front approaches toward the end of the week. Some showers may accompany this front, but there is uncertainty in how much forcing and moisture will be available given downsloping low-level flow having a drying effect off the mountains.

There is uncertainty in the front's position by the upcoming weekend, with some solutions pushing the front far enough south to keep us dry and cooler, with other solutions hanging the front up overhead with lingering precipitation chances.

AVIATION /19Z SUNDAY THROUGH FRIDAY/. Some brief 20 knot wind gusts possible this afternoon across our northern terminals (so excluding CHO). Other than that, VFR condtions will continue through Friday. Light winds expected tonight through Tuesday. Wind directions out of the northwest today will become more light and variable Monday, then turning out of the southwest on Tuesday.

For Wed-Fri, S/SW flow 10-15G20-25kt during the day, generally near or below 10 kt with fewer gusts at night.

MARINE. Brief gusty winds this afternoon have lead to a Small Craft Advisory for portions of the tidal Potomac. Elsewhere on the waters, don't be surprised to see some gusts close to 18 knots, but should generally fall just shy of SCA criteria.

Beyond that, winds will taper off this evening through Tuesday, with no additional marine hazards anticipated at this time.

Small Craft Advisory conditions are possible in southwesterly flow during the second half of the week, but warmer air moving over cooler water may result in poor mixing.

FIRE WEATHER. A dry airmass will remain in place through the middle of the week. Relative humidity values could reach the 20s and 30s over portions of the area each day through Wednesday, but winds will generally be less than 15 mph. Winds may be a little stronger Thursday, though humidity will also be increasing.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 6 PM EST this evening for ANZ535- 536.

SYNOPSIS . DHOF NEAR TERM . CJL SHORT TERM . KJP LONG TERM . DHOF AVIATION . DHOF/CJL MARINE . DHOF/CJL FIRE WEATHER .


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 15 mi49 min N 1.9 G 4.1 43°F 44°F1027 hPa (+0.3)
WASD2 - 8594900 - Washington, DC 40 mi49 min NW 6 G 8.9 45°F 43°F1027.9 hPa (+0.3)
BSLM2 - Chesapeake Bay, MD 44 mi79 min N 5.1 44°F 1027 hPa12°F
PPTM2 - 8578240 - Piney Point, MD 44 mi49 min E 6 G 7
SLIM2 - 8577330 - Solomons Island, MD 45 mi49 min NE 2.9 G 2.9 40°F 42°F1027.6 hPa (+0.7)
COVM2 - 8577018 - Cove Point LNG Pier, MD 49 mi49 min NNW 5.1 G 6 38°F 1028.3 hPa (+0.4)

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last
24hr
N4
G13
N5
G9
N4
N4
G9
N3
NE2
E1
N2
NW4
NW6
G9
W3
W3
G6
NW6
G9
NW5
NW7
G14
NW6
G10
NW10
G19
NW7
G11
NW7
G10
NW11
G20
NW8
G13
NW6
G13
NW5
G10
NW6
G9
1 day
ago
NW7
G11
NW2
G5
NW1
NW3
NW4
G7
NW7
G12
NW11
G16
W7
G11
W5
W3
W3
W4
G8
W3
W3
NW11
G19
NW9
G14
NW7
G12
NW11
NW10
G15
NW8
G15
NW7
G10
NW10
G13
NW7
G12
NW6
G16
2 days
ago
NW10
G20
NW11
G18
NW6
G17
NW9
G18
NW9
G14
NW8
G14
NW8
G17
NW10
G13
NW7
G13
NW10
G17
NW8
G14
NW8
G12
NW10
G17
NW12
G20
NW11
G17
NW13
G16
NW11
G18
NW13
G16
NW12
G18
NW13
G18
NW11
G19
NW13
G19
NW9
G20
NW10
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stafford, Stafford Regional Airport, VA9 mi54 minN 410.00 miFair44°F-12°F9%1028.8 hPa
Fredericksburg, Shannon Airport, VA9 mi74 minN 410.00 miFair47°F10°F23%1026.7 hPa
Quantico Marine Corps Airfield - Turner Field, VA12 mi53 minNNE 410.00 miFair47°F18°F31%1028 hPa

Link to 5 minute data for KRMN

Wind History from RMN (wind in knots)
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrN4N4N3CalmCalmCalmCalmCalmNW5NW4CalmCalmCalmNW4NW8NW10
G15
N6
G14
NW14
G29
NW11
G15
NW12
G16
N8W9N4NE3
1 day agoNW4W4W5W3NW6NW6NW8NW6CalmCalmCalmCalmCalmCalmW6W6NW11
G14
NW10
G16
W7NW11
G16
NW11
G17
NW12
G17
NW7N5
2 days agoN15
G20
N16
G23
N15
G21
N12
G20
NW11
G21
NW8N3
G9
N9NW11NW7N7N7NW12
G17
NW14
G21
NW15
G23
NW10
G20
NW13
G19
NW15
G19
W13
G23
W14
G22
NW14
G23
NW12
G19
NW13NW8

Tide / Current Tables for Clifton Beach, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Clifton Beach
Click for Map
Sun -- 12:29 AM EST     1.10 feet High Tide
Sun -- 02:49 AM EST     Moonrise
Sun -- 06:31 AM EST     Sunrise
Sun -- 06:34 AM EST     0.09 feet Low Tide
Sun -- 12:15 PM EST     Moonset
Sun -- 12:46 PM EST     1.26 feet High Tide
Sun -- 06:08 PM EST     Sunset
Sun -- 07:42 PM EST     0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.11.10.90.70.40.20.10.10.20.50.81.11.21.31.10.90.70.50.30.10.10.20.50.7

Tide / Current Tables for Maryland Point Light, Maryland
   EDIT      (on/off)   Help   One Week of Data
Maryland Point Light
Click for Map
Sun -- 02:48 AM EST     Moonrise
Sun -- 05:36 AM EST     0.09 feet Low Tide
Sun -- 06:31 AM EST     Sunrise
Sun -- 11:34 AM EST     1.20 feet High Tide
Sun -- 12:15 PM EST     Moonset
Sun -- 06:08 PM EST     Sunset
Sun -- 06:44 PM EST     0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
10.80.60.40.20.10.10.20.50.81.11.21.21.10.80.60.40.30.10.10.20.50.70.9

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of    EDIT
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.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.