Marine Weather and Tides
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
|Sunrise 7:21AM||Sunset 6:23PM||Friday October 20, 2017 2:01 PM EDT (18:01 UTC)||Moonrise 6:59AM||Moonset 6:16PM||Illumination 0%|
EDIT (on/off)  Help
|ANZ536 Tidal Potomac From Indian Head To Cobb Island- 133 Pm Edt Fri Oct 20 2017 |
This afternoon..NW winds 10 kt. Waves 1 ft.
Tonight..NW winds 5 to 10 kt. Waves 1 ft.
Sat..E winds 5 kt. Waves less than 1 ft.
Sat night..SE winds 5 kt. Waves less than 1 ft.
Sun..S winds 5 to 10 kt. Waves 1 ft.
Sun night..S winds 5 to 10 kt. Waves 1 ft.
Mon..S winds 5 to 10 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight.
Tue..W winds 5 to 10 kt. Waves 1 ft. Showers.
|ANZ500 133 Pm Edt Fri Oct 20 2017 |
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain near the region through the weekend. A low pressure system will then affect the region early next week. A small craft advisory is likely for portions of the waters Monday through Tuesday. Gales are also possible for portions of the waters on Tuesday.
7 Day Forecast for Marine Location Near Colonial Beach, VAHourly EDIT Help
Area Discussion for - Baltimore, MD/Washington  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 klwx 201415 aaa|
area forecast discussion... Updated
national weather service baltimore md washington dc
1015 am edt Fri oct 20 2017
High pressure will remain across the mid atlantic through this
weekend. A low pressure system will affect the region early
Near term through tonight
Tranquil weather under high pressure sfc and aloft. Maxt will be
in the mid 70s under light NW winds.
Tonight, high pressure builds overhead once again, so we should
have a decent inversion and a bit more potential for patchy
fog. Otherwise, mostly clear and cool with lows mostly in the
Short term Saturday through Sunday night
High pressure will slowly shift east off the coast Saturday and
remain there Sunday. Winds will gradually become southerly and
temps aloft will warm a bit, but otherwise, mostly sunny skies
and light winds should prevail, as we generally remain under the
light gradient close to the center of the high. High clouds
will likely increase Sunday, and by Sunday night, the next
system may bring enough moisture and lift to spark a shower in
the mountains late at night, but that's about it though the
short term. Highs will be in the 70s, with Sunday probably just
slightly warmer than Saturday, and lows in the 40s Saturday
night, rising to the 50s Sunday night as the clouds and
southerly flow ahead of the next front keep it mild and better
mixed. Patchy fog will be a concern late at night and early in
the morning hours, probably more so Saturday night Sunday
morning than Sunday night.
Long term Monday through Thursday
Main story of the long term period is a powerful upper
Phasing between northern and southern streams seems imminent
given amplification of flow upstream and blocking downstream.
The juxtaposition of the right-entrance region of the upper-jet,
strong mid-level vorticity advection and frontogenesis in the
low levels would suggest high probability for widespread and
potentially heavy precipitation. Given antecedent drier-than-
normal conditions and progressive (quick moving) nature of the
system, widespread flooding seems unlikely. The rain should
instead prove beneficial. Ensemble mean QPF is around 1-1.25",
mainly focused in 00z Tuesday through 12z Wednesday.
The tight gradient between deep troughing to the west and
ridging to the east is expected to result in a stribg southerly
low-level jet (marked by 50 knot 925 mb flow). This may result
in gusty winds reaching the surface, particularly with any
heavier showers or embedded convective elements. Timing and
strength differences are still evident amongst the latest
deterministic ensemble guidance, but gusty winds and heavy|
downpours seem most likely sometime in the Tuesday morning
through Tuesday evening timeframe.
Cooler temperatures and the potential for showers are expected
during the middle of next week in the wake of the surface front
as upper troughing stalls overhead. Some ensembles hint at
coastal low development late next week, but historically it
becomes difficult to see substantial impacts from such a system
once the surface front has already rolled through.
Aviation 14z Friday through Tuesday
Vfr through Sunday night all terminals with light winds under
Sub-vfr possible Mon am (fog low cigs), then again late mon
night with lower CIGS developing showers ahead of an approaching
cold front. Llws possible by Tuesday with strong flow (40-45
kts) around 2kft. Models differ on timing but agree on overall
setup. Widespread restrictions likely Tuesday with showers (some
heavy) expected. Gusty surface winds possible.
Winds should generally stay below SCA criteria under high
pressure through Sunday night. There is a small risk of
southerly channeling Sunday night as the next front approaches,
but right now think odds are pretty low as low level jet stays
Sca likely Monday as high pressure departs and southerly flow
develops. High end SCA seems likely Tuesday with strong
southerly llj. Gales possible as well, especially in heavier
convective elements ahead of an approaching cold front.
Tides coastal flooding
Tidal anomalies will increase early next week as southerly flow
develops. Chances for minor tidal flooding increase as
southerly flow strengthens ahead of an approaching cold front
Monday night into Tuesday.
Lwx watches warnings advisories
near term... Rcm
short term... Rcm
long term... Dfh
aviation... Rcm dfh
marine... Rcm dfh
tides coastal flooding... Dfh
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|NCDV2||6 mi||62 min||NNW 4.1 G 11||74°F||65°F||1022.6 hPa (-0.9)|
|PPTM2 - 8578240 - Piney Point, MD||24 mi||68 min||NW 8.9 G 11|
|SLIM2 - 8577330 - Solomons Island, MD||27 mi||62 min||NNW 7 G 8.9||71°F||69°F||1022.7 hPa (-0.8)|
|LWTV2 - 8635750 - Lewisetta, VA||32 mi||62 min||NNE 2.9 G 5.1||71°F||65°F||1023.2 hPa (-0.8)|
|COVM2 - 8577018 - Cove Point LNG Pier, MD||32 mi||62 min||NNE 11 G 13||68°F||1024 hPa (-0.4)|
|44062 - Gooses Reef, MD||36 mi||32 min||NNE 9.7 G 12||69°F||1027.5 hPa|
|44042 - Potomac, MD||36 mi||32 min||NW 5.8 G 5.8||69°F||1022.5 hPa|
|BSLM2 - Chesapeake Bay, MD||39 mi||152 min||WNW 5.1||67°F||1024 hPa||50°F|
|WASD2 - 8594900 - Washington, DC||43 mi||62 min||NW 6 G 9.9||72°F||67°F||1023.7 hPa (-0.7)|
|BISM2 - 8571421 - Bishops Head, MD||49 mi||62 min||NW 8.9 G 11||70°F||65°F||1023.4 hPa (-0.8)|
Wind History for Piney Point, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
Wind History from 2W6 (wind in knots)
|1 day ago||S||W||W||S||SW||W||Calm||W||Calm||Calm||Calm||Calm||SW||Calm||Calm||Calm||S||SW||SW||SW||SW||SW||SW||SW|
|2 days ago||E||NE||E||NE||E||NE||SE||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||SW |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Colonial Beach |
Click for Map
Fri -- 03:35 AM EDT 1.83 feet High Tide
Fri -- 07:21 AM EDT Sunrise
Fri -- 07:58 AM EDT Moonrise
Fri -- 09:49 AM EDT 0.02 feet Low Tide
Fri -- 03:56 PM EDT 1.99 feet High Tide
Fri -- 06:22 PM EDT Sunset
Fri -- 07:16 PM EDT Moonset
Fri -- 10:20 PM EDT 0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Broomes Island |
Click for MapFlood direction 290° true
Ebb direction 110° true
Fri -- 01:06 AM EDT 0.36 knots Max Flood
Fri -- 04:09 AM EDT -0.00 knots Slack
Fri -- 07:09 AM EDT -0.47 knots Max Ebb
Fri -- 07:20 AM EDT Sunrise
Fri -- 07:56 AM EDT Moonrise
Fri -- 10:00 AM EDT 0.00 knots Slack
Fri -- 01:12 PM EDT 0.55 knots Max Flood
Fri -- 04:46 PM EDT -0.00 knots Slack
Fri -- 06:20 PM EDT Sunset
Fri -- 07:14 PM EDT Moonset
Fri -- 07:59 PM EDT -0.61 knots Max Ebb
Fri -- 11:26 PM EDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Mid-Atlantic EDIT
Wind Forecast for Baltimore, MD/Washington (14,3,4,5)(on/off)  Help
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