Sunday, January26, 2020
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Marine Weather and Tides
North Star, DE

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 7:14AMSunset 5:16PM Sunday January 26, 2020 7:30 AM EST (12:30 UTC) Moonrise 8:34AMMoonset 7:02PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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ANZ530 Chesapeake Bay North Of Pooles Island- 639 Am Est Sun Jan 26 2020
Today..W winds 10 kt. Waves 1 ft.
Tonight..W winds 5 to 10 kt. Waves 1 ft.
Mon..W winds 5 to 10 kt. Waves 1 ft.
Mon night..NW winds 5 to 10 kt. Waves 1 ft.
Tue..NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Tue night..NW winds 5 to 10 kt. Waves 1 ft.
Wed..N winds 5 to 10 kt. Waves 1 ft.
Thu..NE winds around 5 kt. Waves 1 ft.
ANZ500 639 Am Est Sun Jan 26 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Northwest flow in the wake of low pressure centered over new england and the canadian maritimes will continue through Monday. An upper level disturbance will pass south of the waters Monday night. High pressure will build toward midweek. Small craft advisories may be required Monday night into Tuesday.


7 Day Forecast for Marine Location Near North Star, DE
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location: 39.75, -75.79     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 261112 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 612 AM EST Sun Jan 26 2020

SYNOPSIS. Strengthening low pressure will move further northeast of the area today and tonight. A large area of high pressure will start to build into the region by Tuesday, and high pressure will dominate the weather for most of the work week. An area of low pressure may approach from the south by the end of the week or next weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/. We have issued an SPS for much of the area to mention the possibility of some black ice developing. The ground is wet in many areas after yesterdays rain and with the cold temperatures overnight, black ice will develop in many areas. The ice will only be around for a few hours after sunrise, when it will become too warm to support ice development.

High pressure at the surface well SW of the area will slowly build up into the Middle Atlantic today. A deep low pressure system aloft will spin up across NY and New England at the same time. These systems will yield dry weather, but cloudy at times. It's typical in these type of situations to have sunshine during the morning then more clouds for the afternoon. I can't rule out a few sprinkles or a flurry up across the higher peaks of the southern Poconos or north-most NJ, so we'll keep the slight chc pops there. Highs today will remain above normal, but 5 to 10 degrees below the abnormal warmth of the past few days. Highs will be mostly in the mid/upper 40s for most areas ,but in the low 40s for the Lehigh Valley, southern Poconos and north NJ. Winds will be gentle from the W, mostly, at 5 to 10 mph.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM MONDAY/. High pressure will remain in control, so a dry night is expected. Again, a brief flurry up across the far north/west is possible, so a slight chc pops will be there. Elsewhere, deceasing clouds and cool weather is expected. Lows will be mostly in the low 30s with some upper 20s across the north areas. Winds will be light.

LONG TERM /MONDAY THROUGH SATURDAY/. Overview .

A quiet work week is expected for the region as an expansive area of high pressure builds into the East out of Canada. Continuing northwest flow on Monday combined with a shortwave passage could yield a spotty rain or snow shower across the far north. Otherwise, dry weather and near seasonable temperatures will dominate the week. The only potentially more consequential weather comes towards the very end of the work week or more likely next weekend, as the flow across the CONUS becomes more amplified. There are some indications for potential storminess during that time, but it is much too early to know how that will play out.

Dailies .

Monday-Monday night . Northwesterly flow continues Monday as low pressure from over the weekend moves further away. Likely a good deal of stratocumulus again Monday especially to the north and west, with a shortwave passing near or north of the region helping to enhance this. A passing rain or snow shower is possible in the Poconos or northern NJ. Otherwise, high temperatures running above average, mainly in the low to mid 40s.

Tuesday-Thursday . Looks like a very quiet stretch of weather as high pressure builds in from the northwest. All three of these days look similar to one another as we sit in the same continental polar air mass for an extended period. Made some sizable downward adjustments to the low temperatures for the midweek period, as we will likely have multiple nights of good radiational cooling. But with dry air and 850mb temperatures a near seasonable -5 to -8C, daytime highs should be near to slightly above average. A shortwave moving through Wednesday looks to pass by with very little fanfare, and dry weather should be a lock for the entirety of this stretch.

Friday and next weekend . Most indications are for high pressure to hold through the day on Friday, with the GEM being an exception and bringing some light precip to the area. Kept the daytime Friday dry for now, and it will probably be similar to the Tuesday-Thursday period. Heading into the weekend, guidance has been fairly consistent on showing a potential storm system, but with wildly different outcomes from run to run. It is not possible at this stage to know how that storm may evolve. We can speculate that the continued lack of Arctic air in the region will lead to temperatures being marginal at best for frozen precip, especially to the east, but we have several days to let this period come into closer view.

AVIATION /11Z SUNDAY THROUGH THURSDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . Mainly VFR. Broken ceilings of around 4000-6000 feet can be expected for much of the day, especially this afternoon, and cannot rule out some pockets of MVFR conditions especially near ABE and RDG. Winds westerly or west-southwesterly at around 10 kt with gusts as high as 20 kt possible this afternoon. High confidence.

Tonight . VFR. Westerly or west-southwesterly wind at 5 to 10 kt. High confidence.

Outlook .

Monday-Thursday . An extended stretch of quiet, VFR conditions is expected. Westerly winds of around 10 kt on Monday with gusts to 20 kt possible during the daytime. NW winds on Tuesday with gusts up to 20 kt during the daytime hours. Light NW winds on Wednesday, and light N or NNE winds on Thursday. High confidence.

MARINE. High pressure will gradually build over the waters today and tonight. SCA flags for seas will continue today, but it doesn't appear that we will need to extend the ending time. Winds will be mostly from the W around 10 to 15 knots today with gusts near 20 knots possible. Fair weather today and tonight.

Outlook .

Monday-Thursday . An extended stretch of sub-SCA conditions is expected. Westerly winds expected Monday with gusts to 20 kt. NW winds Tuesday and Wednesday with gusts mainly below 20 kt. Light northerly or northeasterly winds should develop on Thursday. Seas 3 to 4 ft on Monday, then 2 to 3 ft for the remainder of the period.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory until 6 PM EST this evening for ANZ450>455.

Synopsis . O'Brien Near Term . O'Hara Short Term . O'Hara Long Term . O'Brien Aviation . O'Brien Marine . O'Brien/O'Hara


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 15 mi54 min WSW 2.9 G 4.1 38°F 40°F1012 hPa
DELD1 - 8551762 - Delaware City, DE 16 mi48 min WSW 2.9 G 5.1 37°F 45°F1011.7 hPa
RDYD1 - 8551910 - Reedy Point, DE 18 mi48 min 36°F 40°F1011.2 hPa
MRCP1 - 8540433 - Marcus Hook, PA 20 mi48 min 38°F 41°F1011.1 hPa
PHBP1 - 8545240 - Philadelphia, PA 37 mi42 min 37°F 39°F1010.8 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 38 mi48 min SW 9.9 G 11 38°F 41°F1012.2 hPa
BDSP1 41 mi42 min 38°F 1011.3 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 44 mi54 min WSW 7 G 8 41°F 42°F1012.4 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington, New Castle County Airport, DE11 mi39 minSW 410.00 miOvercast36°F30°F82%1011.9 hPa
Chester County Airport, PA16 mi55 minN 010.00 miPartly Cloudy36°F30°F81%1010.8 hPa

Link to 5 minute data for KILG

Wind History from ILG (wind in knots)
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Last 24hrE5E17W9N4CalmS8SW10W9W17
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1 day agoNE3NE3E8E7E7E9SE9E9E6E8E11E9E7E9E10E7E7E8NE10NE11NE11NE12NE12
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2 days agoCalmCalmCalmNE3E3CalmE3CalmS3CalmCalmS3NW3SE3CalmCalmNW4N3N4N5CalmNW4N5Calm

Tide / Current Tables for Millside, RR. bridge, Delaware
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Millside
Click for Map
Sun -- 01:09 AM EST     4.70 feet High Tide
Sun -- 07:15 AM EST     Sunrise
Sun -- 07:51 AM EST     -0.16 feet Low Tide
Sun -- 08:33 AM EST     Moonrise
Sun -- 01:24 PM EST     5.36 feet High Tide
Sun -- 05:14 PM EST     Sunset
Sun -- 07:01 PM EST     Moonset
Sun -- 08:32 PM EST     -0.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.14.74.43.52.51.50.70.1-0.10.523.54.65.35.24.53.42.41.50.6-0.1-0.10.92.3

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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Chesapeake and Delaware Canal
Click for Map
Sun -- 01:43 AM EST     -1.49 knots Max Ebb
Sun -- 04:54 AM EST     0.01 knots Slack
Sun -- 07:15 AM EST     Sunrise
Sun -- 07:46 AM EST     1.90 knots Max Flood
Sun -- 08:34 AM EST     Moonrise
Sun -- 10:18 AM EST     -0.01 knots Slack
Sun -- 01:49 PM EST     -2.19 knots Max Ebb
Sun -- 05:15 PM EST     Sunset
Sun -- 05:43 PM EST     0.03 knots Slack
Sun -- 07:02 PM EST     Moonset
Sun -- 08:31 PM EST     2.16 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-1.4-1.5-1.3-0.90.31.31.81.91.60.8-1.1-1.7-2.1-2.2-2-1.7-1.10.81.72.12.11.81.3

Weather Map
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wmap_A
GEOS Local Image of    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 (7,2,3,4)
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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.