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Marine Weather and Tides
Version 3.4 |
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. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
Sunrise 7:15AM | Sunset 4:42PM | Saturday December 7, 2019 6:03 AM EST (11:03 UTC) | Moonrise 2:23PM | Moonset 2:24AM | Illumination 80% | ![]() |
ANZ530 Chesapeake Bay North Of Pooles Island- 338 Am Est Sat Dec 7 2019
Rest of the overnight..NW winds 10 kt. Waves 1 ft.
Today..NW winds 5 to 10 kt. Waves 1 ft.
Tonight..NE winds 5 kt. Waves flat.
Sun..SE winds 5 kt. Waves less than 1 ft.
Sun night..S winds 5 kt. Waves less than 1 ft. A chance of showers.
Mon..S winds 5 to 10 kt. Waves 1 ft or less. Rain.
Mon night..SW winds 10 to 15 kt. Waves 2 ft. Rain.
Tue..SW winds 10 to 15 kt...becoming nw 5 to 10 kt. Waves 1 to 2 ft. Showers.
Wed..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers through the day.
Rest of the overnight..NW winds 10 kt. Waves 1 ft.
Today..NW winds 5 to 10 kt. Waves 1 ft.
Tonight..NE winds 5 kt. Waves flat.
Sun..SE winds 5 kt. Waves less than 1 ft.
Sun night..S winds 5 kt. Waves less than 1 ft. A chance of showers.
Mon..S winds 5 to 10 kt. Waves 1 ft or less. Rain.
Mon night..SW winds 10 to 15 kt. Waves 2 ft. Rain.
Tue..SW winds 10 to 15 kt...becoming nw 5 to 10 kt. Waves 1 to 2 ft. Showers.
Wed..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers through the day.
ANZ500 338 Am Est Sat Dec 7 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the region through the weekend. A strong area of low pressure will then develop over the mid- mississippi valley and track northeastward toward the eastern great lakes early next week. Small craft advisories may be needed Monday night through Tuesday.
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the region through the weekend. A strong area of low pressure will then develop over the mid- mississippi valley and track northeastward toward the eastern great lakes early next week. Small craft advisories may be needed Monday night through Tuesday.
7 Day Forecast for Marine Location Near Harrisburg, PA
Hourly EDIT Helplocation: 40.28, -76.89 debug
Area Discussion for - State College, PA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS61 KCTP 071023 AFDCTP
Area Forecast Discussion National Weather Service State College PA 523 AM EST Sat Dec 7 2019
SYNOPSIS. Flurries or scattered light snow showers are likely across the northern tier counties of Pennsylvania early today. Dry conditions with near normal temperatures will follow for the much of the weekend. A warm up along with periods of rain are in store for Monday and Tuesday.
NEAR TERM /UNTIL 6 PM THIS EVENING/. Weak low level cold advection will help to keep a broken to overcast layer of strato cu clouds in place across much of Central and Northern PA through the midday hours as 850 mb temps hover near -10C across the north, and slowly warm a deg or two C over the SW zones (where 850 mb temps this morning will be around -6C).
This will be followed by weak warm advection throughout the blyr late this afternoon with gradual clearing and just some periods of sct- bkn alto cu clouds topping sfc high pressure that will be building east from Ohio.
High temps today will range from the mid to upper 20s across the northern mtns to around 40F in the southern valleys. A northwest breeze at 5-10 mph will become light and variable by dark.
SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SUNDAY/. Dry weather expected for tonight and most or all of Sunday as high pressure slides east across the state. After a chilly start over the NE Sunday morning with temps in the teens, temps will warm to near seasonal normals in the mid 30s (NE) and low 40s (South).
LONG TERM /SUNDAY THROUGH FRIDAY/. Big temperature swings are expected during the period. A significant warming trend is forecast through early next week with max temperature departures +10-15 degrees above normal (widespread 40s and 50s).
Unseasonably mild minimum temps are forecast Monday night with departures on the order of 15-20 degrees above normal as the primary PWAT axis (with values around +2 sigma) slides east across the region.
The mild surge will be accompanied by periods of light to moderate rain Monday and Tuesday. Rainfall amounts between 0.50 to 1 inch are forecast early next week.
The warm air and rainfall will help to melt the snow over the Allegheny Front into the Upper Susquehanna River basin. Areas of fog are likely as the mild air moves over colder ground. Rises on rivers/streams are expected and will need to monitor risk of minor flooding across the northern tier. WPC indicates a MRGL risk of rainfall heavy enough to cause flooding of small streams and poor drainage areas over our far western counties Monday into early Tuesday.
It will turn sharply colder through midweek as arctic air blasts into the region. Temperatures will be on the decline Tuesday afternoon through Tuesday night (non diurnal over the NW 1/2 during the day Tuesday). There will be some potential for residual water or slush to freeze up quickly by Wednesday. Highs are forecast to drop by 20-30 degrees between Tuesday and Thursday, with minimum wind chills in the single digits and teens Thursday morning.
There is also a chance that the cold air could catch up to the back edge of the rain and result in a period of snow at the end of the precipitation event on Wednesday. There should be some lake effect snow that develops in the wake of the system, but trajectories appear to be focused more into southwest NY.
The active weather pattern next week may continue into the weekend with the GFS and ECMWF both showing a large, dynamic storm system impacting the region.
AVIATION /10Z SATURDAY THROUGH WEDNESDAY/. TAFS updated here as of 430 AM.
Some lower clouds will be possible across the mountains this morning, otherwise VFR conditions will prevail across the region this weekend.
Wet weather moves in for early next week.
Outlook.
Sun . VFR.
Sun night . Mainly VFR. Lowering cigs.
Mon-Tue . Widespread SHRA/MVFR. IFR poss. CFROPA Tues.
Wed . Restrictions NW half. Breezy NW wind.
CTP WATCHES/WARNINGS/ADVISORIES. None.
SYNOPSIS . Lambert NEAR TERM . Lambert SHORT TERM . Lambert/RXR LONG TERM . Lambert/Steinbugl AVIATION . Martin
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapStations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
BLTM2 - 8574680 - Baltimore, MD | 72 mi | 52 min | NNE 6 G 7 | 38°F | 49°F | 1026.5 hPa | ||
FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 76 mi | 46 min | N 6 G 7 | 38°F | 1027 hPa | |||
CHCM2 - 8573927 - Chesapeake City, MD | 77 mi | 52 min | NNE 2.9 G 4.1 | 35°F | 42°F | 1026.7 hPa |
Wind History for Baltimore, MD
(wind in knots) EDIT (on/off)  Help6 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
Last 24hr | SW | SW | SW | W | S | SW G9 | SW G5 | W G9 | W G11 | W G10 | W G9 | W | W G7 | NW | NW G9 | NW | N G12 | N G16 | N G20 | N G12 | N G12 | N | N G9 | NE G9 |
1 day ago | NW G11 | NW G14 | NW G17 | NW G13 | N G17 | N G22 | N G17 | NW G21 | NW G16 | NW G16 | N G17 | N G14 | NW G10 | NW G7 | NW | W | SW | W | W | W G4 | -- | W | W | SW |
2 days ago | W | W | W | W | W G7 | SW | W G6 | W | W G9 | SW G5 | W G4 | W G8 | NW | NW G11 | NW G13 | NW G8 | NW | NW G7 | NW | NW | NW | NW G9 | NW G9 | NW G16 |
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Harrisburg, Capital City Airport, PA | 4 mi | 68 min | W 5 | 10.00 mi | Fair | 31°F | 19°F | 61% | 1026.9 hPa |
Harrisburg, Harrisburg International Airport, PA | 8 mi | 68 min | N 3 | 10.00 mi | A Few Clouds | 28°F | 18°F | 66% | 1026.5 hPa |
Muir Army Air Field / Indiantown, PA | 20 mi | 68 min | WSW 4 | 10.00 mi | Overcast | 30°F | 19°F | 64% | 1026.4 hPa |
Link to 5 minute data for KCXY
Wind History from CXY (wind in knots)
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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
Last 24hr | Calm | Calm | N | Calm | SW | SW | SW | W | Calm | NW | W | NW | W | NW | NW G22 | NW G17 | W G19 | NW | W | NW | N | W | W | W |
1 day ago | NW G24 | NW | NW | W | W G22 | W G23 | W | W G21 | W G25 | NW G26 | W G23 | NW | NW | W | W | W | W | SW | W | W | W | Calm | Calm | Calm |
2 days ago | W | W | W | Calm | Calm | SW | SW | W | SW | S | W | SW | W | W | W | W | W | SW | Calm | W | W | W | W G20 | W |
Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataPort Deposit
Click for Map
Sat -- 01:49 AM EST 0.54 feet Low Tide
Sat -- 02:21 AM EST Moonset
Sat -- 06:27 AM EST 1.86 feet High Tide
Sat -- 07:11 AM EST Sunrise
Sat -- 02:01 PM EST -0.04 feet Low Tide
Sat -- 02:20 PM EST Moonrise
Sat -- 04:40 PM EST Sunset
Sat -- 07:30 PM EST 2.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 01:49 AM EST 0.54 feet Low Tide
Sat -- 02:21 AM EST Moonset
Sat -- 06:27 AM EST 1.86 feet High Tide
Sat -- 07:11 AM EST Sunrise
Sat -- 02:01 PM EST -0.04 feet Low Tide
Sat -- 02:20 PM EST Moonrise
Sat -- 04:40 PM EST Sunset
Sat -- 07:30 PM EST 2.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
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 |
0.7 | 0.6 | 0.5 | 0.7 | 1.1 | 1.6 | 1.8 | 1.8 | 1.7 | 1.4 | 1 | 0.6 | 0.3 | 0 | -0 | 0.1 | 0.6 | 1.2 | 1.7 | 2 | 2 | 1.9 | 1.6 | 1.3 |
Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
EDIT (on/off)  Help One Week of DataHavre de Grace
Click for Map
Sat -- 12:26 AM EST 0.27 feet Low Tide
Sat -- 02:21 AM EST Moonset
Sat -- 06:02 AM EST 1.57 feet High Tide
Sat -- 07:11 AM EST Sunrise
Sat -- 12:16 PM EST 0.10 feet Low Tide
Sat -- 02:20 PM EST Moonrise
Sat -- 04:40 PM EST Sunset
Sat -- 06:33 PM EST 1.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:26 AM EST 0.27 feet Low Tide
Sat -- 02:21 AM EST Moonset
Sat -- 06:02 AM EST 1.57 feet High Tide
Sat -- 07:11 AM EST Sunrise
Sat -- 12:16 PM EST 0.10 feet Low Tide
Sat -- 02:20 PM EST Moonrise
Sat -- 04:40 PM EST Sunset
Sat -- 06:33 PM EST 1.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
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 |
0.3 | 0.3 | 0.5 | 0.8 | 1.2 | 1.5 | 1.6 | 1.5 | 1.2 | 0.9 | 0.6 | 0.3 | 0.1 | 0.2 | 0.4 | 0.9 | 1.3 | 1.7 | 2 | 2 | 1.8 | 1.5 | 1.1 | 0.7 |
Weather Map
(on/off)  Help Weather Map
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 State College, PA (6,6,7,8)
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Ground Weather Radar Station State College, PA
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