Saturday, April20, 2019 L-36.com


Marine Weather and Tides
Mayo, 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 6:20AMSunset 7:48PM Saturday April 20, 2019 5:06 AM EDT (09:06 UTC) Moonrise 8:19PMMoonset 6:24AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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
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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 435 Am Edt Sat Apr 20 2019
.small craft advisory in effect through this evening...
Rest of the overnight..S winds 15 kt with gusts to 25 kt. Waves 3 ft. Showers with a chance of tstms.
Today..S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Showers with a chance of tstms.
Tonight..S winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft... Subsiding to 1 ft after midnight.
Sun..S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sun night..W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Mon..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Mon night..W winds 5 kt. Waves less than 1 ft.
Tue..SW winds 5 to 10 kt. Waves 1 ft.
Wed..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 435 Am Edt Sat Apr 20 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will pass over the waters this weekend. High pressure will likely return briefly early next week.


7 Day Forecast for Marine Location Near Mayo, MD
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location: 38.87, -76.47     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 200722
afdlwx
area forecast discussion
national weather service baltimore md washington dc
322 am edt Sat apr 20 2019

Synopsis
Low pressure will drift over the area this weekend. High
pressure will briefly return early next week, then a cold front
will approach from the north during the middle of the week.

Near term through today
Main round of convection has pushed off to the east. However,
the parent low pressure system is still spiraling over southern
west virginia, moving slowly northward. Conditions remain
conditionally unstable across the area, with the best cape
values rooted near the boundary layer over lower southern
md and adjacent coastal waters. As such, new convection has
developed over eastern nc and southeast va, and is pushing
north. Most of the area will probably be limited to scattered
showers through daybreak, but a few thunderstorms are possible
over southern md.

Mid upper dry slot pivots across today, with much of the area
expected to remain dry and seasonable (highs in the upper 60s to
lower 70s). As the upper trough axis slowly pivots toward the
region by this evening, scattered showers will likely develop in
the i-81 corridor and gradually push eastward.

Short term tonight through Monday night
Surface low pressure will lift northeastward as upper low slowly
moves overhead. Low 1000-500 mb thicknesses and 850 hpa temps
dropping to near 0 c are quite low for this time of year, and
are indicative of instability under the upper low. Scattered
showers seem likely Sunday as a result, and can't rule out a
little graupel either given the low freezing levels.

The upper low will finally push eastward offshore early next
week as high pressure builds from the ohio valley to just south
of the mid-atlantic. This should result in dry weather and
warming temperatures, although a few showers are still possible
Monday mainly east of i-95.

Long term Tuesday through Friday
High pressure over the southeastern united states will be in
control of the weather on Tuesday as a weak low pressure system
moves eastward through the great lakes, its attendant cold front
moving into the ohio valley. This will lead to dry and warm
conditions with highs likely reaching the upper 70s to low 80s.

The low will then pass eastward across the northeastern us on
Wednesday, with the cold front moving near the region. Thus some
showers thunderstorms become possible on Wednesday. It should
still be quite warm with highs once again in the upper 70s to
low 80s.

The front will then likely stall out near the region on Thursday
before a disturbance moves along it on Friday. This will keep
chances for showers thunderstorms in the forecast through the
end of the week. Temperatures will be dependent on the frontal
boundary location, but will show 70s for now.

Aviation 07z Saturday through Wednesday
Mainly MVFR CIGS expected tonight ifr CIGS around bwi until
daybreak. Shower possible INVOF cho mrb, possibly bwi mtn late,
though further restrictions should be limited. SE flow 10 g 20
kts gradually pivoting to SW while diminishing through this
evening. Vcsh possible late this afternoon and evening, then
again Sunday afternoon as winds become W AOB 10 kts. Some
graupel is possible in showers Sunday.

Vfr expected Monday in NW flow around 10 kts.VFR continues
Tuesday with high pressure. Chances for showers thunderstorms
will increase Wednesday but should still remain predominantly
vfr.

Marine
A couple thunderstorms could result in gale force gusts through
early this morning. Otherwise, SCA gusts in SE flow, becoming s
today then diminishing this evening. Light winds then expected
through Monday.

Sub-sca conditions likely Tuesday with high pressure. There is
potential for some SCA gusts Tuesday night and Wednesday as a
frontal system approaches.

Tides coastal flooding
Anomalies continue to gradually increase on SE flow. Near
moderate flooding possible at SW waterfront, but current
thinking is they will stay just below. Right around moderate
flooding expected at annapolis early this morning. Otherwise
widespread minor flooding expected. Anomalies will gradually
decrease through the weekend, but minor flooding will remain a
threat through Sunday.

Lwx watches warnings advisories
Dc... Coastal flood advisory until 1 pm edt this afternoon for
dcz001.

Md... Coastal flood warning until 10 am edt this morning for mdz014.

Coastal flood advisory until 6 am edt early this morning for
mdz016-018.

Coastal flood advisory until 8 am edt this morning for mdz017.

Coastal flood advisory until 2 pm edt this afternoon for
mdz508.

Coastal flood advisory until 11 am edt this morning for mdz011.

Va... Coastal flood advisory until 6 am edt early this morning for
vaz057.

Coastal flood advisory until 1 pm edt this afternoon for
vaz054.

Wv... None.

Marine... Small craft advisory until 8 pm edt this evening for
anz530>533-535-536-538>542.

Small craft advisory until midnight edt tonight for anz534-537-
543.

Synopsis... Dhof
near term... Dhof
short term... Dhof
long term... Mm
aviation... Mm dhof
marine... Mm dhof
tides coastal flooding... Dhof


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 3 mi67 min SE 17 G 18 62°F 56°F1003.4 hPa (-1.0)62°F
APAM2 - 8575512 - Annapolis, MD 8 mi49 min 64°F 1002.2 hPa
CPVM2 10 mi49 min 64°F 64°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 24 mi49 min S 14 G 16 65°F 1002.2 hPa
FSNM2 24 mi55 min S 14 G 19 66°F 1002.2 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 27 mi55 min SSE 8 G 15 68°F 62°F1002.9 hPa
BLTM2 - 8574680 - Baltimore, MD 28 mi49 min SSW 5.1 G 8 1001.9 hPa
CA2 - 8571892 - Cambridge, MD 29 mi49 min 1002.8 hPa
WASD2 - 8594900 - Washington, DC 29 mi49 min SSE 7 G 11 67°F 63°F1001.5 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 33 mi49 min S 12 G 13 60°F 1002.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 38 mi49 min ESE 8.9 G 8.9 1001.4 hPa
NCDV2 48 mi49 min ESE 12 G 13 999.9 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD8 mi73 minS 1010.00 miLight Rain66°F61°F84%1002.8 hPa
Bay Bridge Field, MD10 mi27 minSSE 95.00 miLight Rain64°F0°F%1002.4 hPa
Camp Springs / Andrews Air Force Base, MD21 mi11 minSE 510.00 miOvercast64°F63°F98%1001.5 hPa
Easton / Newman Field, MD22 mi50 minSSE 10 G 155.00 miRain67°F64°F92%1004.4 hPa
Fort Meade / Tipton, MD22 mi25 minESE 75.00 miOvercast63°F60°F94%1002.4 hPa

Wind History from ADW (wind in knots)
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1 day agoNE4E4NE4--CalmSW7SW5SW4S9S9S12S14S11
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2 days agoW4NE3NE6NE6NE5NE7E9E8NE8E7E9
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E9E11E10E8E8E4E8----E6E5E4NE6

Tide / Current Tables for Thomas Point Shoal Light, Maryland
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Thomas Point Shoal Light
Click for Map
Sat -- 06:20 AM EDT     1.34 feet High Tide
Sat -- 06:22 AM EDT     Sunrise
Sat -- 07:23 AM EDT     Moonset
Sat -- 12:49 PM EDT     0.08 feet Low Tide
Sat -- 06:42 PM EDT     0.88 feet High Tide
Sat -- 07:47 PM EDT     Sunset
Sat -- 09:19 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.20.40.711.21.31.31.10.90.60.30.10.10.20.30.50.70.90.90.80.60.40.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Sat -- 12:06 AM EDT     -0.87 knots Max Ebb
Sat -- 02:57 AM EDT     0.00 knots Slack
Sat -- 06:22 AM EDT     Sunrise
Sat -- 06:25 AM EDT     1.23 knots Max Flood
Sat -- 07:23 AM EDT     Moonset
Sat -- 09:46 AM EDT     -0.00 knots Slack
Sat -- 12:59 PM EDT     -1.13 knots Max Ebb
Sat -- 04:27 PM EDT     0.00 knots Slack
Sat -- 07:06 PM EDT     0.72 knots Max Flood
Sat -- 07:47 PM EDT     Sunset
Sat -- 09:18 PM EDT     Moonrise
Sat -- 09:52 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-0.8-0.400.511.21.20.90.4-0.1-0.6-1-1.1-1-0.7-0.20.20.60.70.60.3-0.1-0.4

Weather Map and Satellite Images
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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 (5,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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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.