Thursday, April27, 2017 L-36.com


Marine Weather and Tides
Stevensville, 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 6:09AMSunset 7:56PM Thursday April 27, 2017 10:28 PM EDT (02:28 UTC) Moonrise 6:19AMMoonset 8:25PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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
ANZ540 Eastern Bay- 853 Pm Edt Thu Apr 27 2017
.small craft advisory in effect until 5 am edt Friday...
Tonight..S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers early this evening, then a chance of showers with isolated tstms after midnight with vsby 1 to 3 nm.
Fri..W winds 5 to 10 kt...becoming S late. Waves 1 ft. Patchy fog. Vsby 1 to 3 nm.
Fri night..S winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 10 kt. Waves 1 ft.
Sat night..SW winds 5 kt. Waves less than 1 ft. A chance of showers.
Sun..SE winds 5 to 10 kt. Waves 1 ft.
Sun night..S winds 5 to 10 kt. Waves 1 ft.
Mon..SW winds 10 to 15 kt. Waves 2 ft. A chance of showers and tstms.
Tue..W winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 853 Pm Edt Thu Apr 27 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A weak cold front will cross the waters tonight with high pressure then anchored over bermuda through Sunday night. A stronger cold front will cross the region from the west Monday night. A small craft advisory is possible Monday into Tuesday.

7 Day Forecast for Marine Location Near Chester, MD
   Hourly   EDIT   Help
location: 38.93, -76.28     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kphi 280114
afdphi
area forecast discussion
national weather service mount holly nj
914 pm edt Thu apr 27 2017

Synopsis
A cold front will move across the area late tonight and early
on Friday. A backdoor cold front will move across the area
Saturday into Saturday night. This front will remain to our
south on Sunday, then return as a warm front on Sunday night.

Another cold front is expected on Monday night, with a secondary
front or surface trough Tuesday. Another cold front is possible
Wednesday.

Near term /until 6 am Friday morning/
A frontal boundary extended across western pennsylvania and
west virginia this evening. The feature will progress to the
east and it should pass through our region late tonight and
early on Friday. The showers and thunderstorms with and ahead of
the front should continue to weaken during the night as they
encounter low level stable air. When the precipitation reaches
our region it should be mostly in the form of light rain
showers. However, some elevated instability will exist and there
may be isolated thunderstorms, as well.

A light south to southwest wind is expected tonight. The wind
direction is forecast to become west in the wake of the front.

Minimum temperatures are anticipated to range from the middle
50s to the lower 60s.

Short term /6 am Friday morning through 6 pm Friday/
Warm and mostly sunny day expected once front clears the region
on Friday. Should see highs at or above 80 degrees for most
locations, except along the immediate shoreline and the higher
elevations of the poconos.

Long term /Friday night through Thursday/
A frontal wave will be moving along a stationary front off to
the northwest of the area late Friday night and into Saturday
morning. This may touch off a few showers or an isolated
thunderstorm Friday night into Saturday morning. As it moves
northeastward into new england, strong surface high pressure
will build in behind it, pushing the frontal boundary southward
towards and through the area Saturday night. Out ahead of it
though on Saturday, expecting warm temperatures with highs in
the 80s along with the chance for a few showers/thunderstorms.

Spc has placed part of the area in marginal risk for severe
thunderstorms on Saturday.

Much of the area will then be on the cool side of the boundary
on Sunday with northeast low level flow. This will keep
temperatures much cooler than on Saturday with highs from 65-70f
for most locations, except across portions of delaware and
eastern maryland where they may try to remain on the warmer side
of the boundary. Uncertainty still remains on its position.

Chances for additional showers also exist, but thunder threat
much lower with stable low levels.

Front will then traverse back northward over the region Sunday
night into Monday out ahead of a low pressure system pushing
through the great lakes. This will lead to the redevelopment of
southerly flow and rebounding temperatures. Highs Monday should
reach back into the 70s to near 80f. The cold front then pushes
across the area late Monday and Monday night with showers and
possible thunderstorms.

Cyclonic flow aloft develops behind the front for Tuesday and
Wednesday with a few secondary cold fronts possible. Most areas
remain dry, but some instability showers in the colder air aloft
are possible, especially across the poconos and NW nj. Highs
from the 60s to low 70s and lows in the 40s and 50s.

The next organized system will then be developing across the
lower mississippi valley during the middle of next week and will
push towards the region by late in the week with the next
chance of more widespread precipitation.

Aviation /01z Friday through Tuesday/
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Conditions wereVFR at all eight of our TAF sites at 0100z.

That should continue to be the case for much of the night at
krdg, kphl, kilg, kmiv and kacy until a front approaching from
the west brings MVFR ceilings and scattered showers and isolated
thunderstorms between about 0600z and 1200z. The chance for
thunder is too low to include in the tafs.

The persistent southeast flow may bring some MVFR or ifr
ceilings to kttn, kpne and kabe before 0600z, then the chance
for showers will be the same as at our other five TAF sites late
tonight with the low ceilings continuing until a short time
after the front passes.

The frontal boundary is anticipated to move across our taf
sites between about 0900z and 1100z with conditions improving to
vfr for Friday with only scattered cloud cover expected from
mid morning onward.

A south to southwest wind around 4 to 8 knots is expected to
shift to the west around 6 to 10 knots with the arrival of the
front.

Outlook...

Friday night...VFR early. Patchy fog and low CIGS may develop
overnight.

Saturday... BecomingVFR during the morning, although chances
exist for a few showers and thunderstorms. Conditions may
temporarily be reduced with any showers/storms.

Saturday night-Sunday night... Low clouds and fog may develop
overnight Saturday and continue into Sunday night leading to
reduced conditions. Small chance of showers and thunderstorms.

Conditions may temporarily be reduced with any showers.

Monday... Low conditions in the morning, becomingVFR during the
day. A chance of showers thunderstorms during the day, with
more likely showers and thunderstorms overnight. Lower
conditions possible during the day with any showers or storms,
more likely lower conditions overnight. Gusty southwest winds
around 25 knots.

Marine
Elevated seas are expected to continue tonight into Friday
morning on the atlantic coastal waters, generally ranging from 5
to 6 feet. A few gusts near or above 20 kt are possible this
evening. The small craft advisory will be extended until 1:00 pm
Friday.

Outlook...

Friday... Winds expected to remain below advisory levels, but
seas may remain elevated to advisory levels.

Friday night-Sunday night... Seas may approach 5 feet at times,
and winds may gust near 20 knots, but conditions expected to
remain below advisory levels.

Monday... Winds likely to gust 25-30 knots, and seas likely to
exceed 5 feet as well leading to small craft advisory
conditions. A period of gale conditions is also possible.

Climate
**record or number 2 warmest april on record expected**
presuming our forecast temps these last 4 days of april are
accurate, we are assured of a top 2 warmest april on record in
much of our forecast area. Sunday is probably the critical day
for determining record or not.

Below: april projected within the top april average temps, the
normal for april and the period of record (por).

This includes todays high and low temperatures through 4 pm.

Phl normal 54.0 por 1874
59.4 1994
59.4 2017? Projected tied warmest ever
58.5 1921
58.4 2010
57.9 1941
abe normal 49.9 por 1922
56.8 projecting record
56.4 1941
54.7 1994
acy normal 51.7 por 1874
57.2 projecting record
56.3 2010
56.1 2011

Phi watches/warnings/advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... Small craft advisory for hazardous seas until 1 pm edt
Friday for anz450>455.

Synopsis... Robertson
near term... Iovino
short term... Muccilli
long term... Muccilli
aviation... Iovino/muccilli
marine... Iovino/muccilli
climate... Drag


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
CPVM2 7 mi41 min 65°F 61°F
44063 - Annapolis 9 mi29 min SSW 14 G 18 66°F 60°F1 ft1010.1 hPa (+1.7)
TPLM2 - Thomas Point, MD 9 mi89 min S 20 G 21 66°F 59°F
APAM2 - 8575512 - Annapolis, MD 11 mi41 min 67°F 1009.5 hPa
44043 - Patapsco, MD 16 mi29 min SW 5.8 G 7.8 65°F 61°F1 ft1010.5 hPa (+1.5)
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi41 min SSE 6 G 9.9 73°F 61°F1009.7 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 24 mi41 min S 8.9 G 9.9 69°F 1009.3 hPa
FSNM2 24 mi41 min S 8.9 G 11 71°F 1009.2 hPa
BSLM2 - Chesapeake Bay, MD 25 mi119 min SE 7 70°F 1008 hPa62°F
44062 - Gooses Reef, MD 27 mi29 min S 12 G 14 63°F 55°F2 ft1010.9 hPa (+1.7)
CA2 - 8571892 - Cambridge, MD 27 mi47 min 70°F 64°F
BLTM2 - 8574680 - Baltimore, MD 28 mi41 min SSW 4.1 G 7 69°F 62°F1008.9 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 37 mi41 min S 12 G 12 63°F 1011.1 hPa
WASD2 - 8594900 - Washington, DC 39 mi41 min SSW 8 G 12 76°F 65°F1009.3 hPa
SLIM2 - 8577330 - Solomons Island, MD 43 mi41 min SSW 8.9 G 9.9 72°F 61°F
44057 - Susquehanna, MD 44 mi29 min SSW 3.9 G 5.8 66°F 60°F1009.2 hPa (+0.9)
DRSD1 - Delaware Reserve, DE 46 mi119 min SE 6 71°F 1010 hPa64°F
CHCM2 - 8573927 - Chesapeake City, MD 48 mi41 min ESE 1.9 G 4.1 66°F 61°F1009.4 hPa

Wind History for Tolchester Beach, MD
(wind in knots)    EDIT      (on/off)   Help
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
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
Last
24hr
SW3
S4
SE3
SE3
SE3
SE2
SE3
E3
E4
E5
E6
SE5
G9
S3
G6
W2
G5
N4
NW2
N5
S6
G11
SW8
G12
SE7
G12
S7
G13
S5
G11
SE6
G9
SE5
G15
1 day
ago
NE3
G8
NE5
G9
NE6
G11
NE5
G10
NE8
G13
NE9
G12
NE6
G10
N10
G14
N11
N10
N8
G11
N9
NW9
NW8
NW8
N6
N4
N2
NW2
W1
SE2
SE1
S2
S2
2 days
ago
NE5
G10
NE5
G8
NE3
G8
E5
G12
NE5
G11
E5
G12
NE5
G11
NE6
G11
E6
G19
NE8
G13
NE6
G14
NE7
G14
NE8
G12
NE7
G17
NE10
G16
NE6
G16
E8
G17
NE9
G16
NE8
G17
NE8
G15
E9
G18
NE6
G12
NE6
G13
NE5
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay Bridge Field, MD4 mi54 minS 87.00 miFair70°F62°F78%1009.5 hPa
Annapolis, United States Naval Academy, MD11 mi95 minS 1210.00 miFair69°F62°F78%1009.3 hPa
Easton / Newman Field, MD14 mi99 minS 11 G 1610.00 miA Few Clouds73°F62°F69%1010.8 hPa

Wind History from ESN (wind in knots)
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
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
Last 24hrCalmCalmCalmSE3SE4S3S3SE4SE3E3SE3SE6S4SW4SW5SW7S6S9S13
G19
S14
G21
S15
G21
S11
G16
S11
G16
S11
G16
1 day agoNE10NE8NE9NE9NE7N6N7N4N5N5N5N4N4N3NW6N7CalmNW4NW4NW4CalmCalmCalmCalm
2 days agoE11
G17
E13E13
G18
E10
G17
E7
G15
E10
G16
E11
G19
E12
G17
E10
G18
E11
G18
E11
G16
NE11
G16
E16
G21
NE18
G24
NE15
G22
E16
G22
E14
G22
NE11
G17
E8
G14
E11NE13
G21
NE13
G19
NE11
G17
NE13
G19

Tide / Current Tables for Kent Island Narrows, Maryland
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Kent Island Narrows
Click for Map
Thu -- 12:04 AM EDT     0.16 feet Low Tide
Thu -- 06:11 AM EDT     Sunrise
Thu -- 06:15 AM EDT     2.10 feet High Tide
Thu -- 07:18 AM EDT     Moonrise
Thu -- 01:38 PM EDT     0.19 feet Low Tide
Thu -- 06:42 PM EDT     1.38 feet High Tide
Thu -- 07:54 PM EDT     Sunset
Thu -- 09:24 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.511.51.92.121.81.51.10.70.40.20.20.40.71.11.31.41.210.70.4

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Baltimore Harbor Approach
Click for Map
Thu -- 12:03 AM EDT     -0.80 knots Max Ebb
Thu -- 02:50 AM EDT     0.00 knots Slack
Thu -- 06:12 AM EDT     Sunrise
Thu -- 06:23 AM EDT     1.23 knots Max Flood
Thu -- 07:19 AM EDT     Moonrise
Thu -- 09:46 AM EDT     -0.00 knots Slack
Thu -- 01:01 PM EDT     -1.13 knots Max Ebb
Thu -- 04:32 PM EDT     0.00 knots Slack
Thu -- 07:07 PM EDT     0.67 knots Max Flood
Thu -- 07:54 PM EDT     Sunset
Thu -- 09:25 PM EDT     Moonset
Thu -- 09:49 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-0.7-0.40.10.611.21.20.90.4-0.1-0.6-1-1.1-1-0.7-0.20.20.50.70.60.3-0.1-0.4

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 Philadelphia/Mount Holly, PA (22,6,7,8)
      (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.