Monday, March27, 2017 L-36.com


Marine Weather and Tides
Severna Park, MD

Version 3.4
What's New / NOTES
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.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:55AMSunset 7:27PM Monday March 27, 2017 8:43 AM EDT (12:43 UTC) Moonrise 5:52AMMoonset 6:06PM Illumination 0% Phase: New Moon; Moon at 29 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
ANZ538 Patapsco River Including Baltimore Harbor- 731 Am Edt Mon Mar 27 2017
Today..SW winds 5 to 10 kt. Waves 1 ft or less. Widespread fog this morning. A chance of showers this morning...then scattered showers and tstms this afternoon. Vsby 1 to 3 nm this morning.
Tonight..S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Tue..SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Tue night..NW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 ft. A chance of showers.
Wed..N winds 10 kt with gusts to 25 kt. Waves 1 ft.
Wed night..N winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 ft.
Thu..SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers through the night.
Fri..S winds 5 to 10 kt. Waves 1 ft. Showers likely. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 731 Am Edt Mon Mar 27 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will push through the mid atlantic this morning. A cold front is expected to cross the chesapeake bay region Tuesday night. High pressure will build across the waters for midweek, followed by a low pressure system moving towards the region on Friday. Small craft advisories are possible Tuesday night and Wednesday behind the cold front, and again on Friday.

7 Day Forecast for Marine Location Near Severna Park, MD
   Hourly   EDIT   Help
location: 39.07, -76.57     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 270858
afdlwx
area forecast discussion
national weather service baltimore md/washington dc
458 am edt Mon mar 27 2017

Synopsis
A warm front will positioned over southern virginia will
track north through the mid atlantic this morning. A cold front
will cross the area late Tuesday. High pressure will build over
the region Thursday.

Near term /until 6 pm this evening/
Given ground observations and traffic cams showing dense fog
over the northeastwastern part of the forecast area a dense for
advisory has been issued. It runs through 9 am.

Overnight surface analysis shows low pressure centered over
michigan with a warm front extneding down the appalachians into
northern nc. The result for this forecast area is - overnight
easterly winds, low clouds, fog, drizzle.

The front is expected to progress northward through the mid
atlantic this morning. Light rain will be possible as the front
makes its move; afterwards warming is expected as the spring
temperature roller coaster brings us back upward: yesterday only
reached the upper 40s, it may take some time but expect this
afternoon to reach the mid 70s over much of the region.

Short term /6 pm this evening through Wednesday/
While we will be forecasting "chance of showers" overnight
believe for the most part the nighttime hours will be dry. If it
does the best chances will probably be late ahead of the
approaching short wave. Lows generally in the mid 50s.

Tuesday could see thunderstorm activity as the shortwave tracks
through the mid atlantic. SPC has placed much of the forecast
area east of the mountains in a marginal risk of severe storms.

Neither the CAPE or helicity look particularly impressive for
us.

Chances for precipitation should be ending Tuesday evening as
the shortwave moves off the coast. High pressure will return
overnight and for Wednesday. Back on the roller coaster...

temperatures Wednesday should be almost ten degrees cooler than
the previous two days.

Long term /Wednesday night through Sunday/
High pressure will be building into the northeastern united states
Wednesday night, sliding east on Thursday. This will lead to drier
and cooler weather, although still near climatological normals. Good
radiational cooling night Wednesday night will lead to widespread
lows in the 30s, with highs rebounding back through the 50s on
Thursday.

Meanwhile, a strong closed low will be moving northeastward out of
the southern plains on Thursday, into the mid-mississippi valley
Thursday night, and towards the mid atlantic states by later Friday,
becoming vertically stacked and gradually weakening. Model guidance
is in relatively good agreement with this progression and timing. As
the system makes its way to the eastern seaboard, some redevelopment
off of the mid-atlantic coastline Friday night into Saturday morning
is also projected.

Therefore, chances for rain showers increase Thursday night into
Friday morning with initial warm air advection, followed by bulk of
the rainfall likely coming Friday and Friday night with main frontal
push and any subsequent redevelopment. A drying trend should develop
on Saturday, with the chance for some lingering showers as the low
pulls away. High pressure will then build in for Sunday.

Temperatures in the Thursday night - Sunday time period will be
relatively seasonal, skewing slightly above normal. Lows will be
mainly in the 40s. Highs coolest on Friday in the 50s with
clouds/showers, rising into the 60s for the weekend.

Aviation /09z Monday through Friday/
Very poor early morning conditions as the mid atlantic sits on
the north side of a warm front. Lifr conditions will persist
until at least sunrise. After that the level of improvement and
the speed of it will be dependent upon the how fast the front
pushes to the north as well as how much the Sun can work on the
low level moisture. This will need to be watched.

But conditions are expected to reachVFR this afternoon. There
will be chances of rain showers late tonight at all taf
sites..And then possible thunderstorms Tuesday afternoon. Dca
has the best chance for strong gusty winds.

Vfr Tuesday night and Wednesday.

Vfr expected Wednesday night and Thursday, but chances for sub-vfr
conditions increase Thursday night and Friday with rain and low
clouds as next system moves into the area. Winds light Wednesday
night into Thursday will increase out of the southeast later
Thursday and Friday.

Marine
Winds have been below SCA levels so far overnight. Pushed the
sca back to after sunrise when the warm front is expected to
make a rapid advance north through the waters.

Thuderstorms will be possible Tuesday afternoon, some of which
could produce smw level winds. This will need to be monitored.

Sub-sca conditions expected Wednesday night and Thursday. Potential
for SCA then increases Thursday night and Friday with increasing
southeasterly winds ahead of an approaching system.

Lwx watches/warnings/advisories
Dc... Dense fog advisory until 9 am edt this morning for dcz001.

Md... Dense fog advisory until 9 am edt this morning for mdz004>006-
011-013-014-016>018-503>508.

Va... Dense fog advisory until 9 am edt this morning for vaz038>040-
050>057-501-502-505-506.

Wv... None.

Marine... Small craft advisory from 9 am this morning to 6 pm edt this
evening for anz533-534-537-541>543.

Products... Woody!/mjm


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
APAM2 - 8575512 - Annapolis, MD 8 mi43 min 46°F 1018.8 hPa (+0.0)
FSNM2 11 mi43 min ESE 2.9 G 4.1 45°F 1018.5 hPa (-0.5)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 11 mi43 min ESE 2.9 G 4.1 45°F 1019.1 hPa (-0.4)
CPVM2 11 mi43 min 46°F 46°F
TPLM2 - Thomas Point, MD 14 mi43 min NNE 2.9 G 2.9 46°F 45°F46°F
BLTM2 - 8574680 - Baltimore, MD 14 mi43 min SSE 1.9 G 2.9 45°F 47°F1018.6 hPa (-0.7)
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi43 min E 2.9 G 2.9 45°F 45°F1019.3 hPa (-0.5)
WASD2 - 8594900 - Washington, DC 28 mi43 min SSE 1.9 G 4.1 47°F 48°F1018.7 hPa (-0.3)
44062 - Gooses Reef, MD 36 mi33 min NNW 1.9 G 1.9 46°F 1020.1 hPa
CA2 - 8571892 - Cambridge, MD 43 mi43 min S 4.1 G 7 55°F 46°F1018.6 hPa (-0.0)
COVM2 - 8577018 - Cove Point LNG Pier, MD 47 mi43 min NNW 1.9 G 2.9 48°F 1020 hPa (-0.0)

Wind History for Francis Scott Key Bridge NE Tower, MD
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last
24hr
E11
G14
E13
E11
E11
E11
E11
G14
E13
E12
E14
G17
E10
G13
E12
E13
E8
G12
E8
E11
E10
E7
E7
E5
G8
E8
E5
NE2
N3
E3
1 day
ago
SW6
G10
W7
G11
SW5
W2
SE1
SE3
SE6
SE10
S6
S6
S5
S4
SE5
E21
NE18
NE15
NE15
NE16
NE15
NE15
NE14
NE14
G17
E16
E13
G16
2 days
ago
SW6
G11
SW7
G14
SW8
G14
SW8
G16
SW5
G13
SW6
G12
SW9
G16
SW8
G13
SW7
G14
SW9
G16
SW4
G8
SW4
G8
S3
S4
SW3
G6
SW7
G13
SW6
G12
SW5
G11
SW9
G16
W5
G8
SW6
SW2
G5
SW5
SW4
G9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD8 mi49 minN 00.25 miLight Rain Fog47°F46°F100%1019.4 hPa
Baltimore, Baltimore-Washington International Airport, MD10 mi49 minE 30.25 miLight Drizzle Fog45°F45°F100%1018.8 hPa
Fort Meade / Tipton, MD11 mi64 minSE 30.50 miOvercast45°F42°F93%1019.6 hPa
Bay Bridge Field, MD14 mi68 minNNW 40.15 miFog45°F44°F100%1019.6 hPa
Baltimore, Inner Harbor, MD15 mi49 minno data mi46°F44°F93%1019.1 hPa
Baltimore / Martin, MD20 mi58 minN 00.13 miFog45°F44°F100%1019.6 hPa
College Park Airport, MD20 mi62 minN 00.25 miOvercast45°F44°F100%1019 hPa
Camp Springs / Andrews Air Force Base, MD23 mi1.8 hrsNNW 40.50 miFog46°F46°F100%1020.1 hPa

Wind History from NAK (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last 24hrE10E9E9E7E9E12E10E9E9E6E9E9E7E3E8E4E6E4E4E4E3CalmNW4Calm
1 day agoW8
G15
W65SE9SE8SE13SE9SE9SE7E7CalmSE4E3E14E8E7E9E8
G16
E8NE7E9E10E11E10
2 days agoS5S8S14
G20
SW13
G19
6S11
G19
S10S11S9S9
G15
SW8
G16
5SE4SE4SE34SW7SW5SW5SW4CalmCalmCalmW6

Tide / Current Tables for Cedar Point, Severn River, Maryland
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Cedar Point
Click for Map
Mon -- 12:10 AM EDT     0.09 feet Low Tide
Mon -- 05:54 AM EDT     0.83 feet High Tide
Mon -- 06:52 AM EDT     Moonrise
Mon -- 06:58 AM EDT     Sunrise
Mon -- 12:32 PM EDT     -0.01 feet Low Tide
Mon -- 06:28 PM EDT     0.81 feet High Tide
Mon -- 07:05 PM EDT     Moonset
Mon -- 07:25 PM EDT     Sunset
Mon -- 10:59 PM EDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.30.40.60.80.80.80.60.40.30.10-00.10.30.50.70.80.80.70.50.40.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Baltimore Harbor Approach
Click for Map
Mon -- 02:30 AM EDT     0.00 knots Slack
Mon -- 05:35 AM EDT     0.88 knots Max Flood
Mon -- 06:51 AM EDT     Moonrise
Mon -- 06:57 AM EDT     Sunrise
Mon -- 08:40 AM EDT     -0.00 knots Slack
Mon -- 11:45 AM EDT     -0.88 knots Max Ebb
Mon -- 02:51 PM EDT     0.00 knots Slack
Mon -- 05:54 PM EDT     0.86 knots Max Flood
Mon -- 07:04 PM EDT     Moonset
Mon -- 07:24 PM EDT     Sunset
Mon -- 08:56 PM EDT     -0.00 knots Slack
Mon -- 10:59 PM EDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-0.6-0.20.20.60.80.90.70.3-0.1-0.6-0.8-0.9-0.7-0.40.10.50.80.90.70.4-0-0.5-0.8

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Baltimore, MD/Washington (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Dover AFB, DE
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
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.