Marine Weather and Tides
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.
|Sunrise 6:55AM||Sunset 7:00PM||Monday September 24, 2018 3:10 AM EDT (07:10 UTC)||Moonrise 6:11PM||Moonset 5:14AM||Illumination 100%|
7 Day Forecast for Marine Location Near Riviera Beach, MDHourly EDIT Help
Area Discussion for - Baltimore, MD/Washington  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 klwx 240133|
area forecast discussion
national weather service baltimore md washington dc
933 pm edt Sun sep 23 2018
High pressure will build to the north over new england through
early this week. A stationary front over the carolinas will
slowly lift north as a warm front through Tuesday. A cold front
will approach from the ohio valley Wednesday, crossing the mid-
atlantic Wednesday night into Thursday before stalling.
Near term through Monday
Moderate steady rain across the northern half of our CWA has
lightened over western maryland and eastern west virginia and
continues to shift to the east across northeast maryland. High
pressure will continue to build down the eastern slopes of the
appalachian front overnight through Monday.
Later overnight, once the light steady rain has pushed toward
the east, some drizzle and patchy fog could develop. Temperatures
won't budge much and could in fact increase a few degrees
During the day Monday, an easterly upslope isentropic lift begins
to strengthen again Monday. Easterly upslope low-level flow
also increases, especially by evening. In addition, a mid-level
shortwave and right entrance region of a 250 mb jet will pivot
over the region by evening. All of this put together should
result in another period of steady rain, with pockets of heavier
rain over east facing slopes. Given the saturated antecedent
conditions, this may lead to isolated instances of flooding,
especially over the upper potomac river basin (western
md eastern wv).
Any embedded convective elements in the i-95 corridor (most
likely south of us 50) may result in isolated areas of heavier
downpours as well, but confidence in this is low given how far
south the warm front is expected to be, so even elevated
instability may be limited.
Short term Monday night through Tuesday night
Shortwave upper jet depart to the north by Tuesday morning, but
leftover PVA tail in the wake of the shortwave and isentropic
lift ahead of the slowly advancing warm front may lead to at
least scattered pockets of rain through the day. Given the
strength of the cool air wedge in place beforehand, the ~1040 mb
high near the canadian maritimes and weak low pressure off the
carolina coast enhancing the north flow damming, i'm not
convinced the warm front gets north into pennsylvania on
Tuesday. Leaning on the slower guidance results in a
cooler cloudier forecast.
Long term Wednesday through Sunday
A cold front will approach from the west on Wednesday. Winds will be
out of the south ahead of this boundary leading to the transport of
warm and moist air into our region. GFS 12z is pointing to pw's
values near or above the two inch mark for most areas along the i-95
corridor and eastward toward the chesapeake. The storm prediction
center has placed areas west of the i-95 corridor in a 15% chance
for severe weather. The combination of high pw's along with a
approaching cold front indicates that showers will be likely on
Wednesday with thunderstorms being probable. Some thunderstorms will
have the potential to be severe and showers could produce heavy
rain. This setup would argue that flooding could be a issue
Wednesday into Thursday as the region will be already saturated from
the existing precipitation from this weekend through Tuesday. The
front is expected to pass through late Wednesday and be through our
region by Thursday morning. Showers will continue to be possible on
Thursday as the cold front that moves through is expected to stall
in southern virginia near the north carolina border. Winds will
be mainly out of the north leading to dry and cooler air being
transported into our region. Daytime temperatures look to reach
up into the mid to upper 80s on Wednesday but drop back down
into the upper 60s to low 70s on Thursday behind the frontal
Friday into Saturday, a few lingering showers will be possible early
on Friday as hints of a secondary cold front approach the
region. A high pressure system will build into our region Friday
and through the weekend. Skies will start to clear as drier and
cooler air moves into our region. Winds will continue to be out
of the north and are expected to remain light between 5 to 10
knots. Temperatures will likely be slightly below average in the
mid to upper 70s.
Aviation 01z Monday through Friday |
Ifr CIGS expected to persist well into Monday, possibly into
Tuesday with few if any breaks. Vsby will drop in ra which
looks to become steadier again by midday Monday through Monday
evening. Patchy drizzle fog possible at times as well.
Restrictions may lift a bit Tuesday as a warm front slowly tries
to lift north, but i'm not convinced it gets very far with a
strong cool air high pressure wedge in place.
Winds will generally be NE AOB 10 kts through Tuesday, gradually
shifting to the east then south by late Tuesday into Wednesday.
On Wednesday, a cold front will approach from the northwest. Winds
will begin out of the south and will become west to northwesterly
late Thursday evening. Rain will be likely with strong storms
possible. Skies will remain mostly cloudy with some cloud levels
reaching subvfr conditions.
Thursday, winds will become northerly as the cold front moves
through the region. Scattered showers may continue with mostly
cloudy skies and periods of subvfr conditions possible.
Further SCA expansions may be needed by Monday evening. Winds
should gradually diminish through Tuesday as the gradient
relaxes, but at least portions of the waters may require an
extension of the SCA with a more favorable direction for
On Wednesday, winds will be out of the south with showers likely
along with possibly strong thunderstorms. A southerly flow will
couple with an approaching cold front to create strong winds
over the bay and lead to the need for a small craft advisory.
Thursday, scattered showers may linger over the region. Winds
will be out of the north. Small craft advisories may be needed
Increasing isentropic lift, PVA ahead of an approaching mid-
level shortwave, right entrance region dynamics of an upper jet
and pwats approaching 2 inches are expected to result in a
widespread steady to at times heavy rain Monday into Monday
evening. Heavy rain will be enhanced by easterly upslope flow.
Pwats may approach 2.25 inches ahead of a cold front Wednesday,
with more heavy rain seeming increasingly likely.
Given the antecedent saturated ground, this heightens the threat
for potential flooding through at least midweek.
Tides coastal flooding
With an increase in an onshore flow expected overnight into
early Monday, additional coastal flood advisories are expected
into Monday. Some places may reach moderate coastal flooding by
Lwx watches warnings advisories
Dc... Coastal flood advisory until noon edt Monday for dcz001.
Md... Coastal flood advisory from 2 am to 9 am edt Monday for mdz014.
Coastal flood advisory until 5 am edt Monday for mdz017.
Marine... Small craft advisory from 2 am Monday to 6 am edt Tuesday for
Small craft advisory until 6 am edt Tuesday for anz532>534-536-
Small craft advisory from 6 pm Monday to 6 am edt Tuesday for
near term... Klw dhof
short term... Dhof
long term... Jmg
aviation... Klw jmg
marine... Klw jmg
tides coastal flooding... Klw
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|
|FSKM2 - 8574728 - Francis Scott Key Bridge, MD||4 mi||40 min||62°F||1024.4 hPa|
|FSNM2||4 mi||40 min||62°F||1024.3 hPa|
|BLTM2 - 8574680 - Baltimore, MD||8 mi||40 min||62°F||75°F||1024.3 hPa|
|APAM2 - 8575512 - Annapolis, MD||13 mi||40 min||64°F||1023.9 hPa|
|CPVM2||14 mi||136 min||64°F||64°F|
|TCBM2 - 8573364 - Tolchester Beach, MD||16 mi||40 min||62°F||71°F||1024.6 hPa|
|TPLM2 - Thomas Point, MD||19 mi||70 min||NE 14 G 15||64°F||72°F||1024.8 hPa (+0.0)||64°F|
|BSLM2 - Chesapeake Bay, MD||28 mi||100 min||Calm||57°F||1024 hPa|
|WASD2 - 8594900 - Washington, DC||33 mi||40 min||62°F||72°F||1024.5 hPa|
|44062 - Gooses Reef, MD||42 mi||40 min||ENE 14 G 18||66°F||1023.3 hPa|
|CHCM2 - 8573927 - Chesapeake City, MD||46 mi||40 min||62°F||71°F||1025.3 hPa|
|CA2 - 8571892 - Cambridge, MD||47 mi||40 min||66°F||74°F||1024.3 hPa|
Wind History for Francis Scott Key Bridge, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Baltimore, Baltimore-Washington International Airport, MD||8 mi||16 min||NE 6||5.00 mi||Light Rain Fog/Mist||61°F||61°F||100%||1024.5 hPa|
|Baltimore, Inner Harbor, MD||9 mi||16 min||no data||mi||62°F||61°F||96%||1024.8 hPa|
|Annapolis, United States Naval Academy, MD||13 mi||16 min||NNE 6||3.00 mi||Light Rain Fog/Mist||67°F||63°F||87%||1024.3 hPa|
Wind History from BWI (wind in knots)
|1 day ago||W||Calm||SW||W||NW||NW||N||N|
|2 days ago||SE||Calm||SE||Calm||S||S||S||S||S|
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GOES 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.
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Wind Forecast for Baltimore, MD/Washington (3,6,7,8)(on/off)  Help
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