Marine Weather and Tides
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
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|Sunrise 6:12AM||Sunset 7:48PM||Sunday April 23, 2017 3:53 PM EDT (19:53 UTC)||Moonrise 3:43AM||Moonset 3:40PM||Illumination 6%|
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|ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 210 Pm Edt Sun Apr 23 2017 |
.small craft advisory in effect from Monday morning through late Monday night...
This afternoon..E winds 10 kt. Waves 1 ft.
Tonight..NE winds 5 to 10 kt. Waves 1 ft. Rain likely.
Mon..NE winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Periods of rain. Vsby 1 to 3 nm.
Mon night..NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Rain likely.
Tue..NE winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Periods of rain.
Tue night..NE winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Rain likely.
Wed..NW winds 5 to 10 kt...becoming s. Waves 1 ft or less. Rain likely in the morning.
Thu..S winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night.
|ANZ500 210 Pm Edt Sun Apr 23 2017 |
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will remain stalled south of the waters through Tuesday. Low pressure will move along the boundary today and slowly track toward the mid-atlantic coast through Tuesday. The low will finally move away from the area Wednesday and a cold front will approach the waters from the west late this week. A small craft advisory will likely be needed for portions the waters Tuesday through Tuesday night.
7 Day Forecast for Marine Location Near Sharp, MDHourly EDIT Help
Area Discussion for - Wakefield, VA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kakq 231725|
area forecast discussion
national weather service wakefield va
125 pm edt Sun apr 23 2017
A frontal boundary becomes nearly stationary across the carolinas
today. A strong low pressure system will cross the region
through midweek... And bring periods of moderate to heavy
rainfall to the region Monday and Tuesday.
Near term /through tonight/
Pcpn moving more east than northeast as it advances from the sw.
Still some binovc / thinning across the north due to the high
moving east across pa. Think the pcpn eventually wins out as
afternoon progresses so adjusted grids a bit. Main change was to
change from a convective pcpn form to more stratiformed since
we are on the cool side of the developing low (i.E. Rain vs shwrs).
Remaining cool with highs 55-60.
late morning msas has low pressure over NRN ga with the cold
front extending east to near ilm then offshore. Akq fa wedged in
as high pressure to the north provides a cool NE wind. Rain
associated with the first wave has diminished to some light rain
over the south, even some binovc across the north. However,
moisture from the second wave already making a beeline for the
region from the sw. Thus, expect a cloudy, cool and increasingly
wet afternoon ahead as this moisture overspreads the region.
Exception will be across the lwr md eastern shore where any rain
will not arrive until late. Highs 55-60, coolest over the
piedmont due to the developing in- situ wedge. Thunder chcs just
about nil due to the cool and rather stable airmass.
Short term /Monday through Tuesday night/
A cloudy and wet period to begin the work week. Periods of mdt
to hvy rainfall expected Monday night and Tuesday. QPF btwn 1.5
to 3.5 inches (highest across the southern third of the area).
Models in general agreement that aforementioned upr-level low
cuts off as it tracks SE across the southeast and the coastal
carolinas. System then takes on a neg tilt Mon night that
spawns a coastal low off the SE coast Monday. Resultant strong
coastal front will be conducive for heavy rainfall across the
southeast conus, which will eventually move in our direction
late Monday night and Tuesday.
Look for mainly cloudy skies with periods of mdt to locally hvy
rainfall mon/tue as copious amounts of deep atlantic moisture
gets entrained north and rotates around the system. Thus,
confidence remains high enough to go with likely to categorical
pops each period. Kept high pops but low chc thunder along the
Highs Mon in the mid 50s-mid 60s except 65-70 sern coastal
areas. Lows Mon nite in the upr 40s-lwr 60s. Highs Tue in the
lwr 60s-lwr 70s.
Hydro wise, no flood headlines anticipated ATTM with numerous breaks
in between bouts of rain expected. Do expect some healthy rises in
local river by early next week, especially if the heavy rainfall
falls over the headwaters. Given the forecasted QPF and after coord
with the rfc, expect minor flooding at lawrenceville on the meherrin
river by tue. Again, this based on QPF so plenty of time to adjust
Rain tapers off from south to north Tuesday night as the upper
low pivots offshore and NE of the DELMARVA overnight into
Wednesday morning. Early morning lows 55-60.
Long term /Wednesday through Saturday/
Long term period will feature a trend towards drier and warmer
conditions. For Tue night, mid-level cutoff low and associated
sfc low start to progress offshore, with some pcpn psbl on the
backside of the systm. Pops range from 20-40%. Warming trend
then commences for Wed as deep swly flow develops across the
eastern seaboard, lasting through the end of the week with temps
in the 70s Wed reaching the 80s most areas Thu and fri.
Aviation /18z Sunday through Thursday/
High pressure moving east across pa is keeping ric/sbyVFR attm
but mfvr conditions across the south with -ra movg east. Expect
MVFR st to become dominate cloud coverage across the entire area
as the slug of rain overspreads the region. Sby will be the last
to go MVFR probably closer to 00z. After that expect widespread
MVFR/ifr CIGS in areas of rain/fog for the rest of the forecast
period as the system is slow to develop off the SE coast. Gusty
ne winds (15-25 kts at times) along coastal TAF sites.
Outlook... A well organized low will linger just off the mid|
atlantic coast through mid week before lifting NE and away from
the area. Expect a continuation of MVFR and ifr conditions along
with areas of rain/fog through tues, slowly ending west to east
tues night. MVFR/vfr expected later in the week as high pressure
Northeast flow prevails over the marine area, between high pressure
building into the northeast and low pressure over the southeast.
Speeds are generally 15-20 knots, with marginal SCA conditions in
the bay. Waves generally 2-3 feet and seas 3-6 feet (highest
southern coastal waters). High pressure builds in from the northwest
today as low pressure remains over the southeast. Gradient winds
relax later this morning into the afternoon, resulting in a brief
lull in SCA conditions. Longer reprieve expected in the upper bay,
so have opted to drop the headlines mid morning. In the southern
bay, marginal SCA conditions expected today with occasional gusts to
20-23 knots. Gusts of 20-25 knots also expected in the sound and
southern coastal waters today. Seas average 4-6 feet. High pressure
slides offshore tonight as low pressure slides toward the southeast
coast. The result will be an uptick in northeast winds tonight, with
speeds of 15-25 knots. Gusts up to 30 knots in the coastal waters.
Seas increase to 5-8 feet. Am concerned guidance is not handling the
northeast flow and long period swell the best, so have opted to go
above guidance on wave heights. There is the potential for high surf
conditions as well, but there remains some uncertainty so have held
off on high surf headlines. SCA headlines return for the rivers late
tonight. Low pressure slides off the southeast coast Monday and
deepens. Strongest gradient winds begin to expand northward Monday,
with speeds of 15-25 knots expected from the mouth of the bay
northward. A brief lull is possible for the sound Monday. Seas
remain 5-8 feet, but subside to 4-6 feet in the southern coastal
waters. Waves 3-6 feet (highest in the mouth of the bay).
Low pressure slowly lifts along the southeast coast Tuesday and
offshore the mid-atlantic coast Tuesday night. Onshore flow and sca
conditions persist. Seas build upwards of 6-9 feet Tuesday. Flow
becomes northerly Tuesday night as speeds diminish at or below 15
knots as the low lifts over the waters. Seas subside to 4-6 feet
late Tuesday night. Waves 1-2 feet. The low weakens and lifts away
from the region Wednesday as sub-sca conditions return. Seas
forecast to drop below 5 feet late Wednesday. The next front
approaches the waters Friday.
Tidal departures are averaging 1 to 1.5 feet early this morning
thanks to persistent onshore flow. Tidal departures will build
today through midweek as onshore flow prevails ahead of an
approaching area of low pressure. Majority of the tidal
locations in the bay and atlantic coast will reach action stage
today and tonight, but no minor flooding is anticipated at this
time. However, tidal departures increase to 1.5 to 2 feet
Monday. Minor coastal flooding is expected during high tide
Monday night and again on Tuesday, especially in the lower
chesapeake bay and atlantic waters. Depending on the exact track
of the low, high end minor to low end moderate coastal flooding
is possible Tuesday night. Departures subside Wednesday as low
pressure lifts along the northeast coast and flow becomes
Marine... Small craft advisory from midnight tonight to midnight edt
Monday night for anz635>637.
Small craft advisory until 6 am edt Tuesday for anz632-634-650-
Small craft advisory until 6 am edt Monday for anz633.
Small craft advisory from 6 pm this evening to 6 am edt
Tuesday for anz630-631.
Small craft advisory from 6 pm this evening to midnight edt
Monday night for anz638.
near term... Mpr/mam
short term... Mpr/mam
long term... Mas
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|
|CA2 - 8571892 - Cambridge, MD||19 mi||53 min||E 6 G 8.9||59°F||64°F||1018.4 hPa (-1.2)|
|BISM2 - 8571421 - Bishops Head, MD||28 mi||53 min||NE 5.1 G 7||58°F||62°F||1019.4 hPa (-0.8)|
|LWSD1 - 8557380 - Lewes, DE||36 mi||53 min||ESE 12 G 16||52°F||56°F||1019.8 hPa (-0.5)|
|BTHD1||36 mi||173 min||3 ft|
|OCIM2 - 8570283 - Ocean City Inlet, MD||37 mi||53 min||ENE 8 G 12||53°F||57°F||1020.4 hPa (+0.0)|
|OCSM2||37 mi||173 min||4 ft|
|COVM2 - 8577018 - Cove Point LNG Pier, MD||37 mi||53 min||N 6 G 8.9||55°F||1019.9 hPa (-1.3)|
|44062 - Gooses Reef, MD||37 mi||43 min||N 7.8 G 9.7||55°F||1019.9 hPa|
|DRSD1 - Delaware Reserve, DE||40 mi||143 min||E 2.9||58°F||1021 hPa||46°F|
|SLIM2 - 8577330 - Solomons Island, MD||42 mi||53 min||SE 5.1 G 7||56°F||62°F|
|TPLM2 - Thomas Point, MD||45 mi||53 min||NNW 6 G 7||55°F||58°F||43°F|
|CPVM2||47 mi||53 min||57°F||43°F|
|44063 - Annapolis||48 mi||43 min||NW 1.9 G 1.9||56°F||1019.5 hPa|
|44042 - Potomac, MD||48 mi||43 min||ENE 7.8 G 9.7||56°F||1018.1 hPa|
Wind History for Cambridge, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Cambridge-Dorchester Airport, MD||16 mi||73 min||ENE 5 G 10||10.00 mi||Mostly Cloudy||59°F||46°F||63%||1019.6 hPa|
|Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD||19 mi||59 min||E 8||10.00 mi||Mostly Cloudy||60°F||46°F||60%||1019.4 hPa|
|Georgetown - Delaware Coastal Airport, DE||22 mi||59 min||no data||10.00 mi||A Few Clouds||59°F||44°F||58%||1019.7 hPa|
Wind History from CGE (wind in knots)
|1 day ago||N||S||NE||NE||E||E||SE||E||NE||NE||NE||NE||SE||N||NE||Calm||NE||NE||NE||NE||NE||N|
|2 days ago||S||S||S||S||SE||SW||S|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Sun -- 03:05 AM EDT 2.66 feet High Tide
Sun -- 04:42 AM EDT Moonrise
Sun -- 06:15 AM EDT Sunrise
Sun -- 09:27 AM EDT 0.18 feet Low Tide
Sun -- 03:32 PM EDT 2.70 feet High Tide
Sun -- 04:39 PM EDT Moonset
Sun -- 07:47 PM EDT Sunset
Sun -- 09:50 PM EDT 0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
Click for Map
Sun -- 01:31 AM EDT -0.00 knots Slack
Sun -- 04:35 AM EDT -0.79 knots Max Ebb
Sun -- 04:42 AM EDT Moonrise
Sun -- 06:15 AM EDT Sunrise
Sun -- 07:54 AM EDT 0.00 knots Slack
Sun -- 10:41 AM EDT 0.60 knots Max Flood
Sun -- 01:38 PM EDT -0.00 knots Slack
Sun -- 04:39 PM EDT Moonset
Sun -- 04:52 PM EDT -0.96 knots Max Ebb
Sun -- 07:46 PM EDT Sunset
Sun -- 08:15 PM EDT 0.00 knots Slack
Sun -- 11:06 PM EDT 0.70 knots Max Flood
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 Wakefield, VA (15,3,4,5)(on/off)  Help
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.