Wednesday, May22, 2019 L-36.com


Marine Weather and Tides
Calvert Beach, MD

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:48AMSunset 8:19PM Wednesday May 22, 2019 7:50 PM EDT (23:50 UTC) Moonrise 10:59PMMoonset 7:56AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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
ANZ533 Chesapeake Bay From North Beach To Drum Point- 736 Pm Edt Wed May 22 2019
.small craft advisory in effect from midnight edt tonight through Thursday evening...
Tonight..S winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Thu..S winds 10 kt with gusts to 20 kt. Waves 2 ft. A chance of showers and tstms.
Thu night..W winds 10 kt. Gusts up to 20 kt until early morning. Waves 1 to 2 ft. A chance of showers and tstms.
Fri..NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Fri night..NE winds 5 to 10 kt. Waves 1 to 2 ft.
Sat..SE winds 5 to 10 kt. Waves 1 to 2 ft.
Sat night..S winds 10 to 15 kt. Waves 2 ft.
Sun..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night.
Mon..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 736 Pm Edt Wed May 22 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move offshore through tonight. A warm front will approach the waters late tonight before passing through Thursday and a cold front will pass through the waters Thursday night. The cold front will stall out nearby for the rest of the weekend into early next week. A small craft advisory will be needed for the waters Friday, and possibly into Friday night.


7 Day Forecast for Marine Location Near Calvert Beach CDP, MD
   Hourly   EDIT   Help
location: 38.5, -76.5     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 221829
afdlwx
area forecast discussion
national weather service baltimore md washington dc
229 pm edt Wed may 22 2019

Synopsis
High pressure will move offshore through this evening. A warm
front will pass through the area late tonight into Thursday. A
cold front will approach Thursday night before stalling out
nearby for Friday and Saturday. The boundary will likely
dissipate Sunday but another cold front will approach from the
north and this boundary will likely stall out nearby for the
early portion of next week. Unsettled conditions are possible
during this time.

Near term through tonight
High clouds associated with the right entrance of a departing
jetmax will gradually thin out this afternoon and evening,
allowing for partly to mostly sunny skies. MAX temps will top
off in the mid to upper 70s for most locations.

A warm front will move into the region late tonight along with a
weak upper-level disturbance. There may be just enough lift
ahead of the boundary to trigger a few showers and perhaps even
a thunderstorm. However, coverage should be isolated to
scattered since the lifting mechanism will be weak and
instability will be elevated and limited. No severe weather is
expected. Min temps will hold in the upper 50s to the
lower middle 60s for most areas due to the southerly winds.

Short term Thursday through Friday night
The warm front will pass through the area Thursday morning. A
couple showers and perhaps even an isolated thunderstorm may
accompany the frontal passage, but again coverage will be
isolated to widely scattered.

A west to southwest flow behind the boundary will usher in
noticeably warmer and more humid conditions. MAX temps will top
off well into the 80s for most areas, and a few locations may
even approach 90 degrees. Dewpoints should rise into the 60s for
most areas, making it feel more uncomfortable as well.

Still keeping a close eye on the potential for severe
thunderstorms Thursday afternoon and evening. The warmer and
more humid conditions will lead to an unstable atmosphere. The
12z href forecasts mean SBCAPE to be about 1-2kj kg across most
of the area with locally higher amounts east of the blue ridge
mountains (where dewpoints will be a bit higher east of a
pressure trough). Deep layer shear will most likely be around 40
to 50 knots, which is plenty to support the threat of severe
thunderstorms. Latest guidance has come into better agreement
that an MCS will track across the midwest tonight and then
toward our area Thursday morning. The system will likely pass
through our area Thursday afternoon and evening, and with the
moderate instability and shear in place... The threat for severe
thunderstorms is elevated with damaging winds being the
primary threat along with large hail. Confidence is still low on
exactly how this will play out because it will be highly
dependent on the strength of the mcs, which has not developed
yet. If the MCS holds together and tracks through our area, then
the threat for severe thunderstorms will be enhanced. However,
if the MCS dissipates before reaching our area, then popup
thunderstorms will still pose a threat for severe weather but it
will be more isolated. Latest thinking is that the best chance
for more enhanced severe weather will be across our northern and
perhaps even central areas... Where height falls are more
noticeable and there will be less of an impact from downsloping
low-level westerly flow.

The actual cold front will drop into our area from the north
Thursday night. Convection will dissipate overnight with the
loss of daytime heating and a downslope west to northwest flow.

The cold front will stall out over central virginia. There will
not be much of a temperature gradient with MAX temps ranging
from the lower to middle 80s for most areas, but upper 80s to
near 90 in central virginia. Dewpoints will mix down into the
50s north of the boundary making it more comfortable compared to
Thursday. High pressure will briefly build overhead Friday
night, allowing for dry conditions. The boundary will likely
push farther south and west likely getting hung up near
appalachains.

Long term Saturday through Wednesday
Mid-upper level flow will be zonal across the eastern conus
through the extended forecast period. Consequently,
latitudinal variability in frontal positions will be
constrained. Low pressure will be tracking across canada this
weekend, which will drop a cold front across the great lakes
toward new england. This front likely will stall; it remains to
be seen whether that will be across the forecast area, to the
north, or to the south. Regardless, we'll be close enough to the
frontal zone for a chance of showers (and some thunderstorms)
on most days. Sunday may become the most pronounced of those
days, as that will be when frontal forcing collides with a
warmer, more humid air mass. Ultimately, forecast temperatures
will depend upon resolving fate of that boundary, and it appears
that there may be an opportunity for it to be south of the area
for at least one day.

Aviation 17z Wednesday through Sunday
Vfr conditions are expected most of the time through Friday
night. An isolated shower or thunderstorm may impact the
terminals late tonight into Thursday morning, but severe storms
are not expected. There is a better chance for thunderstorms
Thursday afternoon and evening. Subvfr conditions are possible
along with the possibility for locally damaging winds and large
hail. Drier conditions along with a west to northwest flow is
expected behind a cold front later Thursday night through
Friday. Winds will become light Friday night.

Local flight restrictions possible this weekend within
showers thunderstorms. Late Sunday appears to be the more likely
day for storm development to occur.

Marine
A southerly flow will strengthen over the waters tonight ahead
of a warm front. The warm front will pass through the waters
Thursday and a deep mixing layer should allow for breezy
conditions Thursday afternoon. A small craft advisory is in
effect for the middle portion of the bay and lower tidal potomac
river for southerly channeling winds overnight into Thursday
morning and an SCA is in effect for the rest of the waters
Thursday afternoon and evening.

There is a chance for severe thunderstorms Thursday afternoon
and evening, with the most likely time being between 4 pm and 8
pm. Confidence in coverage of severe storms is low, but locally
damaging wind gusts and large hail are possible later Thursday
afternoon and evening.

A cold front will stall to the south and west of the waters
Friday through Friday night, but an SCA will likely be needed
for portions of the waters during this time.

South winds will increase Saturday afternoon evening. If
ingredients come together, the setup for southerly channeling
will be there. It's unclear at this time whether SCA conditions
would result.

A cold front will drop towards the waters Sunday; however, at this
time it does not seem as though the front will make it to the bay
potomac. That would keep the preferred mixing on land.

Tides coastal flooding
A southerly flow will increase over the waters through tonight
and this will cause anomalies to increase. Minor flooding is
possible for sensitive areas with the high tide cycle late
tonight into Thursday morning, but confidence is too low at
this time for an advisory. The flow will turn toward the west
Thursday night and northwest Friday, causing anomalies to
decrease.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from midnight tonight to midnight edt
Thursday night for anz531>534-537-539>541-543.

Small craft advisory from noon Thursday to midnight edt
Thursday night for anz530-535-536-538-542.

Synopsis... Bjl
near term... Bjl jmg
short term... Bjl
long term... Hts
aviation... Bjl hts
marine... Bjl hts
tides coastal flooding... Bjl


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
44062 - Gooses Reef, MD 6 mi62 min S 12 G 14 67°F 1024.5 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 9 mi50 min S 14 G 16 66°F 1024.6 hPa (-0.8)
SLIM2 - 8577330 - Solomons Island, MD 13 mi50 min SE 13 G 14 67°F 71°F1023.3 hPa (-0.9)
CA2 - 8571892 - Cambridge, MD 23 mi50 min 69°F 71°F1023.9 hPa (-0.5)
PPTM2 - 8578240 - Piney Point, MD 25 mi50 min S 13 G 15
TPLM2 - Thomas Point, MD 28 mi50 min SSE 13 G 14 67°F 67°F1024.2 hPa (-1.3)47°F
BISM2 - 8571421 - Bishops Head, MD 31 mi56 min S 13 G 15 67°F 73°F1024.6 hPa
NCDV2 31 mi50 min ESE 12 G 14 69°F 74°F1022.4 hPa (-1.3)
44063 - Annapolis 32 mi44 min SSW 9.7 G 9.7 67°F 68°F1023.5 hPa
44042 - Potomac, MD 33 mi44 min S 12 G 14 68°F 71°F1023.6 hPa
APAM2 - 8575512 - Annapolis, MD 33 mi50 min 70°F 1022.9 hPa (-1.2)
CPVM2 35 mi50 min 68°F 49°F
LWTV2 - 8635750 - Lewisetta, VA 35 mi50 min S 8.9 G 11 67°F 71°F1024.1 hPa (-0.7)
WASD2 - 8594900 - Washington, DC 38 mi50 min S 8 G 8.9 71°F 71°F1023.2 hPa (-1.4)

Wind History for Cove Point LNG Pier, MD
(wind in knots)    EDIT      (on/off)   Help
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
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last
24hr
N10
N10
G16
N13
N7
G12
N9
G12
NW4
NW6
G9
E17
NE14
E10
G14
E6
G9
NE7
G10
NE9
E10
G13
E5
G8
SE4
G7
S4
S7
S6
S6
S6
S7
S10
S14
1 day
ago
SW18
G24
W11
G15
W12
G15
NW8
G12
NW12
NW5
G8
N8
N14
N15
N16
G21
N21
G28
N18
G23
N16
G23
N19
G23
N18
G22
N14
G19
N15
G19
N15
G19
N12
G16
N12
G15
NE11
G15
NE15
NE16
NE11
G14
2 days
ago
S17
S16
S14
G17
SW16
SW11
G14
SW12
SW14
G17
SW17
SW15
G22
SW15
G20
SW20
W18
G25
W19
G25
W19
W16
W9
G13
SW12
G16
SW13
G17
W12
G23
SW13
G17
N24
G29
W5
G8
SW15

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD13 mi68 minSSE 410.00 miFair68°F44°F43%1024.7 hPa
Patuxent River, Naval Air Station, MD15 mi58 minSE 1010.00 miMostly Cloudy68°F50°F53%1024 hPa

Wind History from NHK (wind in knots)
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
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrN6N6N9N5N6N5W4NW5NE8NE7NE6NE5NE10NE9E8E7S663SE4S5E7SE8SE10
1 day agoSW10SW7SW8W7W6W5NW7NW6N7N8N7NW13N11NW16NW21
G27
NW16
G24
NW11NW10N9NW9NE12NE12N12N10
2 days agoS9S7S9S6S6S7SW7SW10SW10SW10SW11SW12SW12SW13
G20
SW15SW12SW11SW8W13
G21
W13
G21
SW11
G19
SW8NW4SW10

Tide / Current Tables for Long Beach, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Long Beach
Click for Map
Wed -- 05:48 AM EDT     1.68 feet High Tide
Wed -- 05:49 AM EDT     Sunrise
Wed -- 08:55 AM EDT     Moonset
Wed -- 01:13 PM EDT     0.41 feet Low Tide
Wed -- 06:15 PM EDT     1.06 feet High Tide
Wed -- 08:16 PM EDT     Sunset
Wed -- 11:45 PM EDT     0.40 feet Low Tide
Wed -- 11:58 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
10
pm
11
pm
0.40.60.81.21.41.61.71.61.41.10.90.70.50.40.40.60.811.110.90.70.50.4

Tide / Current Tables for Broomes Island, 0.4 mile south of, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Broomes Island
Click for MapFlood direction 290 true
Ebb direction 110 true

Wed -- 03:01 AM EDT     0.54 knots Max Flood
Wed -- 05:49 AM EDT     Sunrise
Wed -- 06:40 AM EDT     -0.00 knots Slack
Wed -- 08:56 AM EDT     Moonset
Wed -- 10:04 AM EDT     -0.63 knots Max Ebb
Wed -- 01:51 PM EDT     0.00 knots Slack
Wed -- 04:08 PM EDT     0.27 knots Max Flood
Wed -- 07:12 PM EDT     -0.00 knots Slack
Wed -- 08:16 PM EDT     Sunset
Wed -- 09:51 PM EDT     -0.29 knots Max Ebb
Wed -- 11:58 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
10
pm
11
pm
0.10.30.50.50.50.40.2-0.1-0.4-0.6-0.6-0.6-0.4-0.200.20.30.20.20-0.1-0.3-0.3-0.2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
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.
Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (19,4,5,8)
      (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.