Sunday, March7, 2021
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Marine Weather and Tides
Conestoga, 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 6:27AMSunset 6:05PM Sunday March 7, 2021 10:51 PM EST (03:51 UTC) Moonrise 2:50AMMoonset 12:06PM Illumination 30% Phase: Waning Crescent; Moon at 24 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- 939 Pm Est Sun Mar 7 2021
Rest of tonight..N winds 5 kt. Waves less than 1 ft.
Mon..W winds 5 kt. Waves less than 1 ft.
Mon night..SW winds 5 to 10 kt. Waves 1 ft.
Tue..W winds 5 to 10 kt. Waves 1 ft.
Tue night..E winds around 5 kt. Waves 1 ft or less.
Wed..SE winds 5 to 10 kt. Waves 1 ft or less.
Wed night..S winds 5 to 10 kt. Waves 1 ft.
Thu..SW winds 5 to 10 kt. Waves 1 ft.
Fri..NW winds 5 to 10 kt. Waves 1 ft.
ANZ500 939 Pm Est Sun Mar 7 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build in from the northwest through Monday, then gradually migrate offshore during the middle of the week. Small craft advisory conditions may be needed Monday night and again during the second half of the week.


7 Day Forecast for Marine Location Near Conestoga, PA
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location: 39.88, -76.28     debug


Area Discussion for - State College, PA
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FXUS61 KCTP 072342 AFDCTP

Area Forecast Discussion National Weather Service State College PA 642 PM EST Sun Mar 7 2021

SYNOPSIS. Chilly weekend weather will give way to a big warmup by midweek. Dry weather will persist through Wednesday, but a slow moving front will increase rain chances toward the end of this week with temperatures trending seasonably cooler into next weekend.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. Skies have cleared as low-dewpoint air remains across the area this evening. Winds are also decreasing as the axis of high pressure moves overhead, reducing the pressure gradient. Clear skies, dry air, and diminishing wind will make for effective radiational cooling for most if not all of the night. High clouds will move in after midnight, but probably not thick enough to hinder radiational cooling. Min temps will range from 5 to 10 above up north to the upper teens to near 20 south.

SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/. After a cold start, the much advertised warm-up begins on Monday, as an anomalous upper level ridge builds over the East Coast and winds back from NW to SW. Highs on Monday will reach the low to mid 40s northeast to the low to mid 50s southwest. Dwpts will only rise slightly compared to Sunday.

The warm up will continue through the middle of next week, as upper-level riding persists over the eastern United States. The 12z/07 GEFS projects 850mb temperatures to rise well above normal by the middle of next week, with the anomalies peaking Wednesday or Thursday. There is a good chance that highs will topping 60 degrees for much of central PA each of those days.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. A cold front approaching from the Upper Midwest will bring increasing clouds by Thursday, and introduce a chc of rain showers across the northwestern counties. This front will slowly slip southeastward and across the area on Friday, accompanied by a continued chc of showers.

There remains some disagreement in the medium-range models as to how quickly the front will pass south of central PA, and exactly how cold it will get behind the front. The 12z/07 operational ECMWF pushes the front south of the area Friday night and projects a reinforcing shot of unseasonably chilly air for Sunday. Meanwhile, the 12z/07 GFS stalls the front just south of the Mason-Dixon line next weekend, before bringing a significant surge of moisture towards the area next Sunday or Monday.

Fortunately, this is still a week away and we'll have plenty of time to monitor models trends between now and then. Regardless, it looks like the mild weather will come to an end by next weekend, with a trend back to normal /or even below normal/ temperatures.

AVIATION /00Z MONDAY THROUGH FRIDAY/. High pressure will build into the region tonight, ensuring widespread VFR conditions and light winds. A warm front will push into the area Monday, accompanied by increasing clouds, especially over the northwest half of the state. However, all model guidance indicates ceiling heights will be VFR. The arrival of strong west winds aloft, combined with relatively light winds at the surface, could result in low level wind shear over northern Pa Monday evening.

Outlook .

Tue . Early AM LLWS possible. AM low cigs possible NW Mtns.

Wed . Patchy AM fog possible eastern Pa.

Thu . Evening low cigs/showers possible NW Mtns.

Fri . AM low cigs/showers possible, mainly W Mtns.

FIRE WEATHER. Spring fire season is starting in parts of CPA with a few brush fires reported in the last two days. The latest fuel moisture assessment from PA BOF partners on Thursday, March 4th indicated no critical fuel moisture conditions through the rest of this weekend.

Modified arctic high pressure extending from the Upper Great Lakes south to the Ohio Valley will build southeast into PA tonight and Monday, bringing an end to the gusty winds.

Surface dewpoints may drop into the single digits this afternoon, but moisten a bit on Monday.

Dry and much milder conditions will occur into the middle of the upcoming week along with increasing humidity. Relatively light wind Monday and Tuesday will freshen to 10 to 15 mph with gusts into the 20 to 25 mph range from the south on Wednesday.

CLIMATE. Daylight saving time (EST->EDT) begins on Sunday, March 14th.

The first day of astronomical spring (vernal equinox 2021) will be at 5:37 A.M. EDT on Saturday, March 20th.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Lambert/DeVoir/Colbert NEAR TERM . DeVoir/Colbert SHORT TERM . DeVoir/Evanego/Colbert/Wagner LONG TERM . Evanego AVIATION . Fitzgerald FIRE WEATHER . CLIMATE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 35 mi51 min WSW 1 G 1.9 30°F 40°F1029.9 hPa (+1.4)
DELD1 - 8551762 - Delaware City, DE 42 mi51 min NNW 4.1 G 5.1 37°F 1029.5 hPa (+1.3)
RDYD1 - 8551910 - Reedy Point, DE 44 mi51 min 35°F 40°F1029 hPa (+1.2)
BLTM2 - 8574680 - Baltimore, MD 45 mi51 min NNE 2.9 G 4.1 39°F 40°F1029.6 hPa (+1.8)
MRCP1 - 8540433 - Marcus Hook, PA 46 mi51 min 35°F 41°F1029.3 hPa (+1.6)
TCBM2 - 8573364 - Tolchester Beach, MD 46 mi51 min N 5.1 G 6 38°F 40°F1030 hPa (+1.5)
FSNM2 47 mi51 min N 8 G 8 40°F 1029.3 hPa (+1.8)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 48 mi51 min N 4.1 G 5.1 39°F 1030.1 hPa (+1.8)

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA17 mi58 minN 410.00 miFair31°F12°F45%1029.6 hPa
Chester County Airport, PA23 mi76 minNNW 310.00 miFair30°F10°F43%1029.1 hPa

Link to 5 minute data for KLNS

Wind History from LNS (wind in knots)
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Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Sun -- 01:07 AM EST     0.25 feet Low Tide
Sun -- 02:48 AM EST     Moonrise
Sun -- 04:52 AM EST     1.43 feet High Tide
Sun -- 06:27 AM EST     Sunrise
Sun -- 11:58 AM EST     -0.30 feet Low Tide
Sun -- 12:06 PM EST     Moonset
Sun -- 05:55 PM EST     2.53 feet High Tide
Sun -- 06:03 PM EST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.30.40.81.31.41.310.70.3-0-0.2-0.3-0.10.41.11.92.42.52.42.21.91.51.1

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland (2)
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Havre de Grace
Click for Map
Sun -- 02:48 AM EST     Moonrise
Sun -- 03:59 AM EST     1.20 feet High Tide
Sun -- 06:27 AM EST     Sunrise
Sun -- 10:30 AM EST     -0.25 feet Low Tide
Sun -- 12:06 PM EST     Moonset
Sun -- 05:02 PM EST     2.12 feet High Tide
Sun -- 06:03 PM EST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.40.81.11.21.10.80.50.2-0.1-0.2-0.200.511.622.121.81.51.20.80.5

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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