Thursday, March4, 2021
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Marine Weather and Tides
Ranshaw, PA

Version 3.4
NOTICE
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 6:32AMSunset 6:02PM Thursday March 4, 2021 11:21 PM EST (04:21 UTC) Moonrise 12:00AMMoonset 9:46AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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- 938 Pm Est Thu Mar 4 2021
.small craft advisory in effect through Friday afternoon...
Rest of tonight..NW winds 15 kt with gusts to 30 kt. Waves 2 ft... Except around 1 ft or less near the mouth of the susquehanna.
Fri..NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Fri night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Sat..NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
Sat night..NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Sun..NW winds 5 to 10 kt. Waves 1 ft.
Sun night..N winds 5 to 10 kt. Waves 1 ft.
Mon..SW winds 5 kt. Waves less than 1 ft.
Tue..SW winds 5 kt. Waves less than 1 ft.
ANZ500 938 Pm Est Thu Mar 4 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will continue to push south of the waters as canadian high pressure builds toward the region through Saturday. The high will settle overhead Saturday night into Sunday before shifting offshore early next week. Small craft advisories will likely be required Friday night through Saturday, and possibly Saturday night.


7 Day Forecast for Marine Location Near Ranshaw, PA
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location: 40.77, -76.5     debug


Area Discussion for - State College, PA
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FXUS61 KCTP 050349 AFDCTP

Area Forecast Discussion National Weather Service State College PA 1049 PM EST Thu Mar 4 2021

SYNOPSIS. An upper trough will deepen over the northeast CONUS into the upcoming weekend, then be replaced by an anomalous upper level ridge over the east coast that will bring warming temperatures during the first half of next week. A weakening cold front could approach the region late next week.

NEAR TERM /UNTIL 7 AM FRIDAY MORNING/. For the rest of the overnight, much drier and very low dewpoint air of -25 to -40C at 850 mb (that caused the quick cloud dissipation from north to south earlier this evening), will extend across most of the CWA. This will maintain clear to partly cloudy skies across the region with a moderately gusty NW wind into the mid teens to low 20s (KTS) at times.

Low temps tonight will vary from 10 to 15 across the north to around 20F in the Southern Valleys. Wind chills will range from zero to 5 below zero F across the Northern Mtns to the single digits above zero elsewhere.

SHORT TERM /7 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/. The tight pressure gradient between a ridge over the midwest and an intense low over the Canadian Maritimes will result in a brisk northwest flow over PA. The low subsidence inversion height and generally dry air should result in minimal lake effect clouds over the majority of the CWA. But, the western mtns will not be so sunny, esp in the NW as the day goes on, thanks to lift from the mtns, moisture from the lakes and a channel of potent vorticity aloft. Maxes will be 1-5F cooler than Thursday, running between u20s and 40F.

LONG TERM /SATURDAY THROUGH THURSDAY/. An amplifying upper trough will develop from the Canadian Maritimes to the Central Appalachians Saturday afternoon through Sunday, followed by quickly rising heights/thickness values early in the upcoming week.

Saturday and Sunday will be equally cold for early March days, and although there will be a fair amount of vertical shear and relatively shallow moisture, the dendritic growth zone will reside within the low cloud layer, so periods of flurries and maybe even a ground whitening of snow could occur across the higher terrain of NW PA and the Laurels.

However, most of Lake Erie is covered with ice, so we're not expecting much snow if LES generates Saturday and Sunday.

In the big picture, our ensemble prediction systems have remained consistent of late, showing a significant warming for next week, as a deep eastern Canadian vortex fills and shifts into the north Atlantic.

This will allow ridging to push towards the eastern CONUS, with our low-level flow backing into the W and SW, heralding the arrival of Spring- like temperatures (highs ranging from the 50s-mid 60s by the middle of next week). Although much of this time frame looks dry from this early vantage point, both moisture and model uncertainty look to be on the increase towards the end of the forecast period (late Wed. onward), so the threat of showers could be looming by that time. Overall, though, the main theme is for a trend towards pleasant, early Spring type weather from Mon. through Wed.

AVIATION /04Z FRIDAY THROUGH TUESDAY/. Generally VFR ceilings will continue to scour out across central PA due to the combo of sinking/drying air under high pressure and the dry well-mixed low levels. West/northwest winds will remain gusty all night (10-15G20-25KT), and even pick back up a bit on Friday.

Outlook .

Sat-Sun . Occasional MVFR clouds NW, otherwise gusty W-NW wind.

Mon-Tue . Occasional MVFR clouds NW, otherwise no sig wx.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Lambert/Fitzgerald NEAR TERM . Lambert/Dangelo SHORT TERM . Lambert/Dangelo LONG TERM . Jurewicz/Lambert/Wagner AVIATION . Guseman/Dangelo


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MRCP1 - 8540433 - Marcus Hook, PA 88 mi51 min 34°F 40°F1014.1 hPa
PHBP1 - 8545240 - Philadelphia, PA 92 mi51 min 34°F 41°F1013.8 hPa
CHCM2 - 8573927 - Chesapeake City, MD 93 mi51 min NW 8.9 G 15 35°F 40°F1015.3 hPa

Wind History for Philadelphia, PA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Selinsgrove Penn Valley Airport, PA19 mi28 minWNW 10 G 1510.00 miFair28°F7°F41%1017.3 hPa
Muir Army Air Field / Indiantown, PA23 mi25 minW 9 G 1810.00 miFair29°F5°F35%1016.3 hPa

Link to 5 minute data for KSEG

Wind History from SEG (wind in knots)
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Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
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Thu -- 02:02 AM EST     1.87 feet High Tide
Thu -- 06:32 AM EST     Sunrise
Thu -- 09:09 AM EST     -0.40 feet Low Tide
Thu -- 09:46 AM EST     Moonset
Thu -- 02:39 PM EST     2.58 feet High Tide
Thu -- 06:00 PM EST     Sunset
Thu -- 10:40 PM EST     0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.61.91.81.410.50-0.3-0.4-0.30.31.11.92.52.62.421.51.10.70.30.10.1

Tide / Current Tables for Millside, RR. bridge, Delaware
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Millside
Click for Map
Thu -- 03:52 AM EST     5.61 feet High Tide
Thu -- 06:30 AM EST     Sunrise
Thu -- 09:44 AM EST     Moonset
Thu -- 11:12 AM EST     -0.01 feet Low Tide
Thu -- 04:24 PM EST     5.00 feet High Tide
Thu -- 05:57 PM EST     Sunset
Thu -- 11:23 PM EST     0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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12.84.45.35.65.24.231.91.10.400.31.63.24.44.94.94.23.121.10.50.1

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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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