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 7:08PM||Friday September 21, 2018 11:58 AM EDT (15:58 UTC)||Moonrise 4:38PM||Moonset 2:24AM||Illumination 89%|
7 Day Forecast for Marine Location Near Dahlgren CDP, VAHourly EDIT Help
Area Discussion for - Baltimore, MD/Washington  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 klwx 211417|
area forecast discussion
national weather service baltimore md washington dc
1017 am edt Fri sep 21 2018
A cold front will approach from the northwest this afternoon as
high pressure moves out into the atlantic ocean. The front will
move into the region tonight, stall near the area over the
weekend, and then move back northward as a warm front next week.
Near term until 6 pm this evening
High pressure ridging extends southwestward along the us east
coast. This has promoted low level southeast flow, aiding in low
level moisture transport. Aloft, weak warm air advection has
begun, and on the leading edge of the push, some showers are
moving across southern maryland and the tidal potomac. Stratus
will gradually break and lift, although progress will be slow,
and may take until well into the afternoon for some locations
east of the blue ridge.
For locations west of the blue ridge where stratus is either
non-existent or will break earlier, instability will develop by
the afternoon, with 500-1000 j kg of MLCAPE likely available.
Therefore, some isolated to scattered showers thunderstorms
become possible during the afternoon hours. These however are
not expected to become particularly strong given weak forcing
and depicted warm nose aloft between 600-400 mb stunting growth.
That will not be the case further north west over the ohio
valley, pa, and across the eastern great lakes closer to the
cold front where more organized convection is expected.
High temperatures will range from the upper 70s to mid 80s.
Short term 6 pm this evening through Sunday night
The cold front will continue pushing southeastward this evening
and tonight. Upstream convection over the ohio valley and pa
will make its way southeastward, however is largely expected to
weaken as it approaches our region late this evening and
tonight. Will have to closely monitor its progression as even as
its weakening, some gusty showers storms will be possible across
western md and eastern wv. For the remainder of the area, only a
few isolated to scattered showers are expected as the front
crosses. By Saturday morning, the front should be roughly
located from near de westward to southern md to near central va.
Lows tonight in the 60s to near 70f.
The front will settle south of the region on Saturday with
cooler and drier northerly flow setting up. This should actually
keep much of the area dry during the day Saturday. Across
central va and into the potomac highlands, some afternoon
showers storms may develop closer to the frontal boundary, with
heavy rain being the primary threat. Highs from 70-80f.
Conditions then become favorable for a return to wet conditions
Saturday night, Sunday, and Sunday night as upper level energy
interacts with southwest flow bringing in additional moisture
overrunning the boundary to our south. Periods of rain and
showers will become likely during this time with cool conditions
under northerly surface flow. Given wet antecedent conditions, a
flood threat may present itself, but placement and intensity of
heaviest rain is uncertain at this time. Temperatures Sunday
will remain in the 60s to near 70f. Lows in the 50s to near 60f.
Long term Monday through Thursday
A front will be stalled just south of our area on Monday while a
high pressure centered over new england moves offshore. This will
keep the cold air damming pattern over us on Monday. Below normal
high temperatures are expected, with the high temperatures reaching
the 60s and low 70s. Showers and thunderstorms are also possible
along the front.
The front will lift as a warm front on Monday night into Tuesday
while southerly flow settles over us. Warm and moist air advection,
along with diurnal heating can produce additional showers and
thunderstorms Tuesday, along with a warming trend.
An amplified mid to upper level trough will be pushing east into the
eastern CONUS Tuesday into Thursday. A surface front approaches the
mid-atlantic region Tuesday night into Wednesday, and moves across
Wednesday night into Thursday. The front will then stall over or
just to our south. Showers and thunderstorms are possible again
Wednesday and into the end of the week, especially over areas closer
to the frontal boundary.
Aviation 14z Friday through Tuesday |
Widespread MVFR with isolated ifr conditions expected under a
low stratus deck later this morning. A few rain showers or
drizzle are also possible, but not expecting much in the way of
visibility reductions. Gradual improvement should occur this
afternoon to return toVFR. A few showers storms are possible
this afternoon, mainly at mrb.
A cold front will approach the region this evening, with some
additional shower thunderstorm activity possible. Much of it
should weaken before reaching any TAF sites, with mrb having the
highest chance of any impacts.
The front will then cross the region late tonight into Saturday
morning, turning winds northerly. Rain chances increase
significantly Saturday night into Sunday as the front stalls
nearby. Potential exists for subVFR vis CIGS during this
Sub-vfr conditions are possible Monday into Wednesday as several
boundaries will be near over our region allowing for showers and
thunderstorms at times over the terminals.
Sub-sca winds expected to continue later this morning, but
south to southeast winds will increase again this afternoon and
evening ahead of a cold front with a SCA in effect. This front
will traverse the waters on Saturday, lingering to the south for
the remainder of the weekend. SCA was extended to cover a surge
in northerly winds behind the front Saturday. Sub-sca winds
then expected Saturday night and Sunday.
Periods of small craft advisory may be needed between Monday and
Wednesday as mixing increases over the waters while several
boundaries are near over our region.
Tides coastal flooding
Onshore flow has caused increased tidal anomalies. While some
decrease is expected into Saturday, the threat for coastal
flooding will persist into the weekend given increasing
astronomical tides and onshore flow.
Lwx watches warnings advisories
Dc... Coastal flood warning until 11 am edt this morning for dcz001.
Coastal flood advisory from 4 pm this afternoon to 10 pm edt
this evening for dcz001.
Md... Coastal flood watch from 9 pm edt this evening through
Saturday morning for mdz014.
Coastal flood advisory until 9 pm edt this evening for mdz011-
Coastal flood advisory until 5 pm edt this afternoon for
Coastal flood advisory until 3 pm edt this afternoon for
Coastal flood advisory until 4 pm edt this afternoon for
Coastal flood advisory until 2 pm edt this afternoon for
Va... Coastal flood advisory until 5 pm edt this afternoon for
Coastal flood advisory until 11 am edt this morning for vaz054.
Marine... Small craft advisory until noon edt Saturday for anz531-
Small craft advisory until 6 pm edt Saturday for anz532>534-
Small craft advisory from 4 pm this afternoon to noon edt
Saturday for anz530-535-536.
near term... Mm klw
short term... Mm
long term... Imr
aviation... Imr klw
marine... Imr klw
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|
|NCDV2||1 mi||41 min||69°F||77°F||1023 hPa|
|PPTM2 - 8578240 - Piney Point, MD||30 mi||65 min||SSW 7 G 8|
|SLIM2 - 8577330 - Solomons Island, MD||32 mi||41 min||73°F||78°F||1023.6 hPa|
|COVM2 - 8577018 - Cove Point LNG Pier, MD||36 mi||47 min||73°F||1024.3 hPa|
|LWTV2 - 8635750 - Lewisetta, VA||38 mi||47 min||75°F||78°F||1023.7 hPa|
|44062 - Gooses Reef, MD||38 mi||39 min||SW 7.8 G 9.7||73°F||1023.7 hPa|
|BSLM2 - Chesapeake Bay, MD||38 mi||149 min||S 4.1||67°F||1024 hPa||64°F|
|WASD2 - 8594900 - Washington, DC||39 mi||47 min||69°F||74°F||1023.2 hPa|
|44042 - Potomac, MD||43 mi||39 min||S 7.8 G 9.7||74°F||1023.1 hPa|
Wind History for Piney Point, MD(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Quantico Marine Corps Airfield - Turner Field, VA||19 mi||2 hrs||S 13 G 16||10.00 mi||Overcast||67°F||66°F||100%||1024 hPa|
|Fredericksburg, Shannon Airport, VA||21 mi||2.1 hrs||SE 4||10.00 mi||Overcast||68°F||68°F||100%||1023.4 hPa|
|Stafford, Stafford Regional Airport, VA||22 mi||2.1 hrs||N 0||10.00 mi||Overcast||0°F||0°F||%||1025.1 hPa|
Wind History from NYG (wind in knots)
|1 day ago||N|
|2 days ago||S||S||N||N||N||N|
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Wind Forecast for Baltimore, MD/Washington (11,2,3,4)(on/off)  Help
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