Sunday, September19, 2021
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Marine Weather and Tides
Trevorton, PA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:49AMSunset 7:09PM Sunday September 19, 2021 10:21 PM EDT (02:21 UTC) Moonrise 6:00PMMoonset 4:07AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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- 736 Pm Edt Sun Sep 19 2021
.small craft advisory in effect from Monday afternoon through Monday evening...
Tonight..NE winds 10 kt...becoming E after midnight. Waves 1 ft.
Mon..E winds 10 to 15 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft.
Mon night..E winds 10 to 15 kt. Gusts up to 20 kt until early morning. Waves 1 ft.
Tue..E winds 5 to 10 kt. Waves 1 ft.
Tue night..SE winds 5 to 10 kt. Waves 1 ft.
Wed..SE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers likely.
Wed night..SE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers likely.
Thu..SW winds 5 to 10 kt...becoming nw after midnight. Waves 1 ft. Showers likely. A chance of tstms. A chance of showers after midnight.
Fri..NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 736 Pm Edt Sun Sep 19 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain overhead, before moving offshore Monday and Tuesday. A strong cold front will push through the region mid- week, bringing the chance for small craft advisory conditions on Wednesday and Thursday. High pressure returns toward the end of the work week.


7 Day Forecast for Marine Location Near Trevorton, PA
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location: 40.75, -76.74     debug


Area Discussion for - State College, PA
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FXUS61 KCTP 192332 AFDCTP

Area Forecast Discussion National Weather Service State College PA 732 PM EDT Sun Sep 19 2021

SYNOPSIS. High pressure at the surface and aloft over the Northeast U.S. will supply clear skies through tonight, with low humidity and dry weather continuing through Monday.

Clouds will increase on Tuesday, and by the middle of the upcoming week, a strong cold front and sharpening trough aloft will bring a widespread soaking rain to Pennsylvania. Following the frontal passage towards the end of the week, temperatures will be noticeably cooler for the first few days of fall.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. Surface high and associated dry air mass will ensure fair and cool conditions tonight. Clear skies and a calm wind should result in patchy late night fog. The fog could be locally dense in the deep valleys north of I-80, where air/water temp diffs greater than 20F are anticipated.

Below normal pwats of only around 0.5 of an inch will support efficient radiational cooling with lows ranging from the upper 40s in the cooler valleys of northern Pa to the mid 50s across the southern counties.

SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/. Sfc wind will veer around from NE to SE overnight and Monday morning, followed by some moderate gusts in the mid teens as vertical mixing deepens to nearly 4 kft AGL and the llvl pressure gradient tightens. Aside from some flat, fair weather and low-cal pancake cu and some wisps of maple cirrus aloft, it'll be a splendid late summer day to being the new week, with excellent vsby, low humidity and comfortable high temps in the 70s.

LONG TERM /TUESDAY THROUGH SUNDAY/. By Tuesday, the trough will begin to deepen over the midwest which will be the primary weather producer for the middle and end of the week. The deep upper-level trough will contribute to a strong surface low pressure system that will enter the region on Wednesday, which also happens to be the Autumnal Equinox. Models have been trending towards bringing in the surface low later and keeping it around longer. Additionally, the location of the center of the low has shifted, with models now bringing the center of the low directly over Pennsylvania. This system will dump quite a bit of rain over the forecast area. Most of the rain should fall between Wednesday afternoon and Thursday night, though some stray showers may linger into the morning on Friday. By Friday, ensemble mean QPFs are upward of 1.5 - 2+". Will need to closely monitor to assess a potential flooding threat for mid/end of the week.

Drier conditions are expected briefly Friday afternoon through Saturday afternoon. Another upper-level disturbance may lead to showers on Saturday afternoon and evening. Showers may linger into Sunday as well, but there is still large model disagreement for this time period. Temperatures will be trending about average for the end of the time period.

AVIATION /00Z MONDAY THROUGH FRIDAY/. For the 00Z TAF package, went close to the earlier fcst. I did hit the fog and lower CIGS a bit harder in a few spots. Concern is warming aloft will limit mixing, along with how wet is has been lately, that fog will likely form later on.

For Monday and Tuesday, should be mainly VRF conditions, after any moring fog and low CIGS burn off. Any fog and low CIGS early Tuesday morning should be more limited anyway, given a return flow from the southwest, on the back side of the high pressure system.

Wet and stormy weather could set in by Wednesday morning and last into Thursday Night, as the cold front stalls across or just east of the area.

Outlook .

Tues..SHRA/TSRA possible W, mainly late in the day.

Wed-Thurs night . Periods of SHRA/TSRA likely. CFROPA.

Friday . Partly Sunny and breezy with MVFR Cigs possible mainly northern and western mtns in wrap-around cooler air with a tap of moisture off the Great Lakes.

CLIMATE. Fall Equinox 2021 will be at 3:20 PM (1920 UTC) on Wednesday, September 22.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Lambert NEAR TERM . Fitzgerald SHORT TERM . Lambert LONG TERM . Gutierrez AVIATION . Martin CLIMATE . Steinbugl


Weather Reporting Stations
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On 03/09/2021 the NDBC primary processing servers were shut off due to a facilities issue. Station pages on the NDBC website are not updating and there is no ETR at this time. We will update this banner as we learn more.
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MRCP1 - 8540433 - Marcus Hook, PA 96 mi51 min 69°F 74°F1022.6 hPa
CHCM2 - 8573927 - Chesapeake City, MD 98 mi51 min Calm G 1 65°F 77°F1022.9 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Selinsgrove Penn Valley Airport, PA8 mi28 minN 010.00 miFair56°F55°F97%1023.4 hPa
Muir Army Air Field / Indiantown, PA23 mi25 minN 010.00 miFair57°F54°F88%1023.5 hPa

Link to 5 minute data for KSEG

Wind History from SEG (wind in knots)
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Last 24hrNW3N4NE5NE3N3CalmCalmCalmN3N3N5N7N7N64NE733NW3CalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm5CalmCalmSW3CalmS3CalmN4N5Calm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3E3CalmCalmSE5SW3CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
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Sun -- 04:46 AM EDT     0.75 feet Low Tide
Sun -- 05:06 AM EDT     Moonset
Sun -- 06:49 AM EDT     Sunrise
Sun -- 10:19 AM EDT     3.57 feet High Tide
Sun -- 06:05 PM EDT     1.02 feet Low Tide
Sun -- 06:55 PM EDT     Moonrise
Sun -- 07:06 PM EDT     Sunset
Sun -- 10:25 PM EDT     2.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.21.81.410.80.81.11.72.53.23.63.53.32.92.521.51.211.21.82.42.82.8

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
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Havre de Grace
Click for Map
Sun -- 03:16 AM EDT     0.31 feet Low Tide
Sun -- 05:06 AM EDT     Moonset
Sun -- 06:49 AM EDT     Sunrise
Sun -- 09:10 AM EDT     2.53 feet High Tide
Sun -- 04:16 PM EDT     0.23 feet Low Tide
Sun -- 06:55 PM EDT     Moonrise
Sun -- 07:05 PM EDT     Sunset
Sun -- 09:47 PM EDT     2.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.30.90.50.30.40.81.31.92.32.52.42.21.81.40.90.50.20.30.71.31.82.12.22.1

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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