Saturday, October23, 2021
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Marine Weather and Tides
Windsor, 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 7:25AMSunset 6:17PM Saturday October 23, 2021 4:25 PM EDT (20:25 UTC) Moonrise 7:01PMMoonset 9:15AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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- 137 Pm Edt Sat Oct 23 2021
.small craft advisory in effect late Sunday night...
This afternoon..SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.
Tonight..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sun..SE winds 5 kt. Waves less than 1 ft.
Sun night..S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Mon..S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Mon night..S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Tue..NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely.
Wed..NW winds 10 to 15 kt...diminishing to 5 kt after midnight. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 137 Pm Edt Sat Oct 23 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will weaken as it passes through the region today, while high pressure is slated to build over the area through Sunday. A warm front approaches from the west by Sunday evening while a cold front crosses through the area late Monday. Small craft advisories may be needed Monday due to increased southerly channeling while gale conditions will be possible on Tuesday as an area of low pressure develops off the coast.


7 Day Forecast for Marine Location Near Windsor , PA
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location: 39.9, -76.53     debug


Area Discussion for - State College, PA
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FXUS61 KCTP 231900 AFDCTP

Area Forecast Discussion National Weather Service State College PA 300 PM EDT Sat Oct 23 2021

SYNOPSIS. An upper level trough will pivot across Pennsylvania today, then high pressure will briefly build into the state Sunday. A highly amplified upper flow pattern is anticipated next week, with a pair of slow-moving low pressure systems lifting across the state early and late in the week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A shortwave rotating around the base of an upper low centered over Ontario is providing forcing for ascent and associated showers across Central PA today. As the shortwave moves east, expect coverage of showers to taper off gradually from west to east. A few showers will remain possible in upslope/lake effect regions of the Laurel Highlands and in NW PA this afternoon and evening.

The big forecast "problem" today is the cloud cover forecast. Overcast skies may be tough to scour out this afternoon, but some breaks are possible, especially in southern PA. The NBM is a bit more optimistic than I am about clearing skies by sunset.

As a result of overcast skies, widespread light rain showers, and a narrow window of possible sunshine this afternoon, expecting high temperatures to end up 5 to 10 degrees below normal this afternoon, ranging from the upper 40s in the northern mountains and Laurels to low 60s in the Lower Susquehanna Valley.

SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY NIGHT/. Surface high is progged to build into the region tonight, breaking up the clouds and yielding close to normal mins. Given the anticipated clearing over the east, we will continue to mention patchy fog over the eastern half of the area. The clouds and light wind make a good set up. Despite the end of the growing season also already occurring across the northern mountains, have mentioned frost potential as it is likely to be the coldest morning yet this fall and the first real threat for frost in those areas.

Sunday starts fair, but it clouds up quickly with good agreement amongst all guidance in WAA sliding across the area. This should form a constant rain or numerous showers along and north of the front. Will keep PoPs highest across the nrn half of the area, but bump them up quite a bit. The clouds coming in early and the precip should keep it cool in the north, but the srn tier could be dry for most or all of the day, and get on the good side of the front. Maxes N will be in the u40s to l50s, and far srn valley locations should get above 60F.

Rain showers will continue overnight, especially across the northern tier closer to the advancing warm front. Southerly flow behind the front will help to keep overnight low temperatures a bit higher than tonight and preclude any threat for fog or frost. The trend of significantly warmer nights relative to average continues .

LONG TERM /MONDAY THROUGH SATURDAY/. Warm front north of NY border with a low approaching from the Ohio Valley. Increasing chances for showers and possibly a thunderstorm through the day and over night as the low moves through. There is a marginal risk for severe thunderstorms across the southern two thirds of PA into the evening as the front moves east. Instability is expected to be weak but strong deep layer shear could support it.

Rain should shift east of the region Tuesday, as surface low exits. However, deformation band on northwest periphery of upper low, combined with orographically enhanced lake effect, will keep scattered showers in the forecast Tuesday, especially across the northern mountains. Conditions should see some drying Tuesday night as shortwave ridging approaches. Wednesday will likely remain cloudy with highs in the 50s to near 60.

Overnight Wednesday into Thursday, weather associated with the next system begins to move in. This is progged to be another highly amplified system with some big model discrepancies. This system has the potential to produce significant rainfall across parts of the area Friday, due to its slow movement and hence chance for showers continues into Saturday. Temperatures for the latter part of the week into Saturday show highs near normal in the 50s and lows above normal in the 40s . a small diurnal range due to cloud cover and precipitation.

AVIATION /19Z SATURDAY THROUGH THURSDAY/. Area of rain showers is moving toward southeast Pennsylvania this afternoon but coverage is decreasing. Expect conditions to remain VFR with just a brief shower possible through 00Z.

Behind the area of precipitation, MVFR is the general rule in ceilings. Satellite indicates more breaks in the clouds moving our way so an improvement to VFR in all locations should occur through the late afternoon and evening.

Rainfall will help patchy fog develop overnight but the coverage is limited enough that it was left out at this point.

Outlook .

Sun . AM valley fog. SHRA late, mainly west.

Mon-Tue . Restrictions in SHRA and low cigs.

Wed . Mainly VFR.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Fitzgerald/Dangelo NEAR TERM . Dangelo/Banghoff SHORT TERM . Dangelo/Banghoff LONG TERM . Watson/Fitzgerald AVIATION . Martin/Tyburski


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 44 mi56 min W 5.1G9.9 65°F 70°F1013.4 hPa
CHCM2 - 8573927 - Chesapeake City, MD 46 mi56 min WNW 5.1G6 63°F 64°F1014.2 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 47 mi56 min W 9.9G12 64°F 1013.8 hPa
FSNM2 47 mi56 min WSW 9.9G14 64°F 1013.6 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA19 mi33 minW 810.00 miOvercast59°F50°F72%1014.2 hPa

Link to 5 minute data for KTHV

Wind History from THV (wind in knots)
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Last 24hr0000000NE3SE5SE33SE4E5SE30SE30SE30E3SE4SE5SE4SE6
1 day ago0000SW3S5SW30SE3003300000000000
2 days agoE4SE4E4E6E5E3E4SE5E5SE5E3SE3E3SE50SE3SE30SE3SE3000SE3

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Sat -- 01:02 AM EDT     3.32 feet High Tide
Sat -- 07:23 AM EDT     Sunrise
Sat -- 08:56 AM EDT     1.11 feet Low Tide
Sat -- 10:12 AM EDT     Moonset
Sat -- 12:52 PM EDT     2.25 feet High Tide
Sat -- 06:13 PM EDT     Sunset
Sat -- 07:39 PM EDT     0.42 feet Low Tide
Sat -- 07:59 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland (2)
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Havre de Grace
Click for Map
Sat -- 12:09 AM EDT     2.78 feet High Tide
Sat -- 07:23 AM EDT     Sunrise
Sat -- 07:28 AM EDT     0.92 feet Low Tide
Sat -- 10:12 AM EDT     Moonset
Sat -- 11:59 AM EDT     1.88 feet High Tide
Sat -- 06:11 PM EDT     0.35 feet Low Tide
Sat -- 06:13 PM EDT     Sunset
Sat -- 07:59 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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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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