Tuesday, March31, 2020
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Marine Weather and Tides
Longport, NJ

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:41AMSunset 7:22PM Tuesday March 31, 2020 4:07 PM EDT (20:07 UTC) Moonrise 11:06AMMoonset 1:28AM Illumination 53% Phase: First Quarter Moon; Moon at 8 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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ANZ452 Coastal Waters From Little Egg Inlet To Great Egg Inlet Nj Out 20 Nm- 335 Pm Edt Tue Mar 31 2020
.small craft advisory in effect through late Wednesday night...
Tonight..E winds 15 to 20 kt with gusts up to 30 kt, becoming ne 20 to 25 kt with gusts up to 30 kt late. Seas 4 to 7 ft. SWell mainly from the sw with a dominant period of 7 seconds.
Wed..NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. SWell mainly from the ne with a dominant period of 8 seconds.
Wed night..N winds 15 to 20 kt with gusts up to 25 kt, becoming nw around 10 kt late in the evening, then increasing to 15 to 20 kt with gusts up to 30 kt after midnight. Seas 4 to 6 ft. SWell mainly from the E with a dominant period of 10 seconds.
Thu..NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. SWell mainly from the N with a dominant period of 9 seconds.
Thu night..NW winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft.
Fri..N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft, building to 4 to 7 ft in the afternoon.
Fri night..NE winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to 9 ft.
Sat..NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 6 to 8 ft.
Sat night..SE winds 5 to 10 kt. Seas 5 to 8 ft.
Sun..S winds 5 to 10 kt. Seas 4 to 7 ft.
Sun night..S winds around 10 kt, becoming sw after midnight. Seas 4 to 6 ft.
ANZ400 335 Pm Edt Tue Mar 31 2020
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. An upper level disturbance will yield continued unsettled conditions today. An area of low pressure will move off the southeast coast tonight and will end up remaining stalled well offshore for much of the week. Meanwhile, high pressure will gradually build in across our region from late Wednesday through Saturday bringing mainly dry conditions. A weak cold front will likely approach by Sunday or Monday as low pressure tracks through the great lakes.


7 Day Forecast for Marine Location Near Longport borough, NJ
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location: 39.28, -74.54     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 311937 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 337 PM EDT Tue Mar 31 2020

SYNOPSIS. A low pressure system crossing off the Carolina coast tonight is expected to meander off the eastern seaboard through the rest of the week. However, high pressure from the west is anticipated to build slowly across our region through Saturday, keeping our region mostly dry through this period. A weak cold front is expected to cross the region Sunday into Monday.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A cool, moist marine layer lies over the eastern half of the forecast area, while a somewhat dryer airmass lies over the western half, and a boundary between these two airmasses is right along the I-95 corridor.

For the eastern half of the CWA, there are areas of fog that will last through daybreak, as well as low stratus that will be in place for much of the day, although ceilings will lift as the day progresses.

For the western half of the CWA, the marine layer/stratus deck will spread to the west as the morning progresses, although ceilings will not be quite as low as they are across portions of New Jersey.

Some pockets of light rain is passing through New Jersey, and this is helping to dissipate some of the fog that developed last night.

There is a deep closed low north of New York state, and several strong shortwaves will rotate around the base of the low across eastern Pennsylvania and central New Jersey. Weak low pressure develops over the area, and some light rain is possible this afternoon.

A noticeably cooler day with highs in the 40s to near 50, except for southern Delmarva, where highs could get into the low 50s. Temperatures will be cooler along the coasts.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM WEDNESDAY/. As the closed low sags into northern New York state tonight, low pressure develops over Delmarva. Some light rain is possible, mainly across portions of southeast Pennsylvania and Delmarva. Another shot of light rain, possibly mixed with some sleet, may occur across the southern Poconos.

A cloudy, damp, and cool night on tap with lows in the 30s.

LONG TERM /WEDNESDAY THROUGH TUESDAY/. Overview: No significant concerns in the long term until we get to early next week, when another cold front approaches our region.

Details:

Thursday through Saturday . A mid level ridge is expected to build from the southern Mississippi Valley to the Great Lakes region starting mid week. The air mass should build slowly eastward with the axis of the ridge passing off the coast on Saturday. The surface low that will be crossing off the Carolina coast tonight is expected to lift north and meander just off the eastern seaboard through the week, even retrograding Thursday into Friday. The proximity of this low will keep a relatively tight pressure gradient over our region Thursday and Friday, and consequently breezy conditions are expected to continue.

Sunday and Monday . The weak cold front is still expected to approach and cross our region late this weekend. In the mid and upper levels, there is a weak short wave trough which will be crossing at the same time. With relatively weak support, it doesn't look like a significant precipitation event. The only change from yesterday is it looks like the guidance is trending later with the arrival of the front, now expected to cross our region Sunday night, which seems like a reasonable trend given how stagnant the overall pattern will be through the week.

Tuesday . A mid level ridge may try to build in behind the cold front, but there is a lot of uncertainty given the lack of any well defined features early next week. Thus, have stayed close to the previous forecast.

AVIATION /20Z TUESDAY THROUGH SUNDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . Mainly MVFR ceilings expected through at least 00Z. Some occasional lowering to IFR with MVFR visibility restrictions possible in patch drizzle. Winds E then SE 5-10 kt. Moderate confidence.

Tonight . MVFR/VFR CIGs for most of the night. E winds, turning NE, less than 10 kt. Moderate confidence.

Outlook .

Wednesday night through Thursday night . Mostly VFR conditions expected. Northwest wind 10 to 20 kt with gusts near 25 kt during the day Thursday. Moderate confidence.

Friday . Mostly VFR conditions expected, although there is a chance for MVFR ceilings to develop. Northwest wind 5 to 15 knots, becoming northeast. Moderate confidence.

Saturday . Mostly VFR conditions expected with light and variable winds. Moderate confidence.

Sunday . Starting with VFR conditions, though ceilings could lower to MVFR through the day. Southerly and southwesterly winds of 5 to 10 kt. Moderate confidence.

MARINE. Sub-SCA criteria for most of today, but winds and seas will build to SCA levels by late afternoon on the ocean, and SCA conditions will develop on lower DE Bay for tonight.

SCA conditions continue on the ocean waters through tonight. Seas will average 4-6 feet and wind gusts will range from 25-30 kt.

Outlook .

Wednesday night through Thursday night . SCA conditions are expected. On Thursday, there may be a brief period of gale force gusts on the Delaware and southern New Jersey coastal waters, but confidence in this is low at this time.

Friday through Sunday . SCA conditions are expected, primarily on the coastal waters due to elevated seas.

TIDES/COASTAL FLOODING. The strengthening East to Northeast flow across the waters this evening and overnight will create favorable conditions for the enhancement of the tides the next few cycles. We have updated the TWL forecasts early this afternoon to catch the latest guidance and show these updated trends. It appears the the present tide cycle up Delaware Bay may affect Reedy Point with that site reaching the 'low- end' range minor flooding. The overnight cycle (after midnight) could affect more (DE and srn NJ) coastal and Delaware Bay sites with action stage to possibly low end minor flooding. At this point, an advisory doesn't appear warranted, but we will continue to monitor overnight in case anything changes.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory until 6 AM EDT Thursday for ANZ450>452. Gale Warning until 6 PM EDT Wednesday for ANZ453>455. Small Craft Advisory until noon EDT Wednesday for ANZ430-431.

Synopsis . Johnson Near Term . MPS/Staarmann Short Term . MPS Long Term . Johnson Aviation . Johnson/Staarmann Marine . Johnson/MPS/O'Brien Tides/Coastal Flooding .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACYN4 - 8534720 - Atlantic City, NJ 8 mi67 min 43°F 48°F1015.8 hPa (-1.4)
JCRN4 - Jacques Cousteau Reserve, NJ 18 mi97 min N 11 46°F 1016 hPa39°F
CMAN4 - 8536110 - Cape May, NJ 31 mi67 min ENE 7 G 14 45°F 50°F1014.4 hPa (-1.6)
BRND1 - 8555889 - Brandywine Shoal Light, DE 36 mi67 min E 16 G 18 1014.9 hPa (-1.5)
SJSN4 - 8537121 - Ship John Shoal, NJ 44 mi67 min E 8 G 9.9 46°F 1015 hPa (-1.5)
LWSD1 - 8557380 - Lewes, DE 46 mi67 min E 12 G 14 45°F 50°F1014.8 hPa (-1.4)

Wind History for Cape May, NJ
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Atlantic City, Atlantic City International Airport, NJ13 mi73 minno data mi47°F36°F66%1015.4 hPa

Link to 5 minute data for KACY

Wind History from ACY (wind in knots)
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Last 24hrSE9SE9--SE12SE5E6E4E4NE6E4E4E3E5--E6--E8E11E11--E9E12
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1 day agoCalmS6E5SE7SE4SE4E4N9NE7NE6----N6NE8NE6E3Calm----CalmCalmS7SE46
2 days ago--E15
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NE8E8E9NE6N11E4--N8N10----N8N8NE9
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NE6NE5N7NW5N9Calm--SE5

Tide / Current Tables for Longport (inside), Great Egg Harbor Inlet, New Jersey
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Longport (inside)
Click for Map
Tue -- 12:41 AM EDT     3.87 feet High Tide
Tue -- 01:27 AM EDT     Moonset
Tue -- 06:43 AM EDT     Sunrise
Tue -- 07:22 AM EDT     0.71 feet Low Tide
Tue -- 11:06 AM EDT     Moonrise
Tue -- 01:33 PM EDT     3.20 feet High Tide
Tue -- 07:12 PM EDT     0.78 feet Low Tide
Tue -- 07:21 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.83.93.632.11.40.90.70.81.11.72.42.93.23.22.82.21.510.80.91.21.92.7

Tide / Current Tables for Middle Thorofare, Ocean Drive bridge, New Jersey
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Middle Thorofare
Click for Map
Tue -- 12:45 AM EDT     3.87 feet High Tide
Tue -- 01:27 AM EDT     Moonset
Tue -- 06:43 AM EDT     Sunrise
Tue -- 07:21 AM EDT     0.71 feet Low Tide
Tue -- 11:06 AM EDT     Moonrise
Tue -- 01:38 PM EDT     3.20 feet High Tide
Tue -- 07:11 PM EDT     0.78 feet Low Tide
Tue -- 07:22 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.83.93.632.21.40.90.70.81.11.72.32.93.13.22.92.21.510.80.91.21.92.7

Weather Map
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wmap_A
GEOS 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 Philadelphia/Mount Holly, PA (16,3,4,5)
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Ground Weather Radar Station Philadelphia, PA
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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 numerous 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.