Sunday, August9, 2020
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Marine Weather and Tides
Conestoga, PA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:10AMSunset 8:10PM Sunday August 9, 2020 7:44 AM EDT (11:44 UTC) Moonrise 10:24PMMoonset 10:49AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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 Am Edt Sun Aug 9 2020
Today..S winds around 5 kt. Waves 1 ft or less. Patchy fog this morning. Isolated showers and tstms this afternoon. Vsby 1 to 3 nm this morning.
Tonight..SW winds 5 kt. Waves less than 1 ft.
Mon..S winds 5 to 10 kt. Waves 1 ft or less.
Mon night..S winds 5 to 10 kt. Waves 1 ft.
Tue..S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms.
Tue night..S winds 5 to 10 kt. Waves 1 ft.
Wed..SE winds 5 kt. Waves less than 1 ft. A chance of tstms. A chance of showers.
Thu..SE winds 5 kt. Waves less than 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 736 Am Edt Sun Aug 9 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the waters over the next few days. A cold front will approach from the northwest next week, stalling in the area as the week progresses.


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 091110 AFDCTP

Area Forecast Discussion National Weather Service State College PA 710 AM EDT Sun Aug 9 2020

SYNOPSIS. The heat and humidity will ramp back up across central PA this week. The return of hot/humid weather will help fuel isolated to scattered afternoon and evening thunderstorms.

NEAR TERM /THROUGH TONIGHT/. Patchy fog in the valleys across CPA early this morning will mix out faster than yesterday. Expect plenty of sunshine to start today with temperatures reaching the lower to mid 80s around midday.

An isolated pulse t-storm will be possible this afternoon/early evening along and to the east of the I-81 corridor - where the 09/00Z HREF mean shows a narrow axis of 500-1500 J/kg of MLCAPE.

MaxT will be a few to several degrees warmer than yesterday with highs in the 80s to around 90F. Dewpoints in the 65-70F range across the mid/lower Susquehanna Valley will make it feel very muggy.

Mainly clear again tonight with patchy fog in the valleys and lows trending much warmer across the northwest Alleghenies.

SHORT TERM /MONDAY THROUGH MONDAY NIGHT/. Heat and humidity ramps up significantly on Monday. Widespread highs in the mid 80s to low 90s will be +5 to +15 degrees above average for early August. Max HX values will push 100F across parts of the mid to lower Susquehanna Valley which will warrant a mention in the HWO (increased risk of heat-related illness).

The HREF mean along with a consensus of global models seem to favor the northeast 1/3 of the CWA with the best chance for diurnal convection Monday afternoon/evening. Expect any diurnal convection to fade by Monday night. Cloud cover and POPs should trend upward over the western Alleghenies into Tuesday morning ahead of an approaching frontal boundary.

LONG TERM /TUESDAY THROUGH SATURDAY/. Slight troughiness and a slow moving front will bring a chance for showers and thunderstorms much of the time from Tuesday on. The best chance for showers or thunderstorms will be each afternoon and evening, with convection diminishing after sunset. Some areas of central Pennsylvania are still experiencing abnormally dry conditions and could use the rain, while other areas, mainly east of the Susquehanna have received 4 or more inches of rain over the last week.

Heat Index values take a run at the upper 90s in the Lower Susq. through the middle of the week, then temperatures will trend closer to normal through the end of the week.

AVIATION /11Z SUNDAY THROUGH THURSDAY/. Patchy fog in the valleys across CPA early this morning will mix out faster than yesterday. Expect plenty of sunshine and widespread VFR conditions from mid morning onward. Only glitch may be late this afternoon over the far SE, where an isolated tstm will be possible. Winds will be light from the west.

Patchy valley fog develops again tonight.

Outlook .

Mon . Mainly VFR. Patchy low clouds and fog possible early in the morning.

Tue-Thu . Increasing potential for showers and thunderstorms, along with associated restrictions.

CTP WATCHES/WARNINGS/ADVISORIES. None.

SYNOPSIS . Steinbugl NEAR TERM . Steinbugl SHORT TERM . Steinbugl LONG TERM . Travis AVIATION . Ross/RXR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 35 mi57 min 82°F
DELD1 - 8551762 - Delaware City, DE 42 mi57 min 72°F 76°F1020.8 hPa
RDYD1 - 8551910 - Reedy Point, DE 44 mi57 min 71°F 82°F1020.3 hPa
BLTM2 - 8574680 - Baltimore, MD 45 mi57 min 75°F 82°F1020.1 hPa
MRCP1 - 8540433 - Marcus Hook, PA 46 mi57 min 73°F 82°F1020.5 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 46 mi57 min 74°F 83°F1020.7 hPa
FSNM2 47 mi75 min 75°F 1020.4 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 48 mi57 min 75°F 1020.5 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA17 mi52 minN 04.00 miFog/Mist69°F66°F90%1020.8 hPa
Chester County Airport, PA23 mi50 minN 04.00 miFog/Mist66°F66°F100%1022 hPa

Link to 5 minute data for KLNS

Wind History from LNS (wind in knots)
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Last 24hrCalmCalmN3CalmN3CalmN44N4E4E3E3CalmCalmCalmE3CalmCalmCalmNE3CalmCalmCalmCalm
1 day agoNE6E6E5E8E9E9E9NE7NW10NE18
G23
N13E6CalmN3CalmCalmCalmN4CalmNE3NE4CalmCalmCalm
2 days agoE4NE8E7NE8NE5E6E4E7E6E6SE6E5E4SE4E4E4E3CalmCalmE3E3E3CalmNE6

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Sun -- 03:19 AM EDT     2.96 feet High Tide
Sun -- 06:11 AM EDT     Sunrise
Sun -- 10:25 AM EDT     1.47 feet Low Tide
Sun -- 11:48 AM EDT     Moonset
Sun -- 03:10 PM EDT     2.89 feet High Tide
Sun -- 08:07 PM EDT     Sunset
Sun -- 10:33 PM EDT     0.87 feet Low Tide
Sun -- 11:23 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.52.12.72.92.92.72.42.11.81.61.51.51.82.22.72.92.82.62.21.81.41.10.90.9

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland (2)
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Havre de Grace
Click for Map
Sun -- 02:26 AM EDT     2.48 feet High Tide
Sun -- 06:11 AM EDT     Sunrise
Sun -- 08:57 AM EDT     1.22 feet Low Tide
Sun -- 11:48 AM EDT     Moonset
Sun -- 02:17 PM EDT     2.41 feet High Tide
Sun -- 08:07 PM EDT     Sunset
Sun -- 09:05 PM EDT     0.72 feet Low Tide
Sun -- 11:23 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.22.52.42.321.71.41.31.21.31.61.92.22.42.42.11.81.41.10.80.70.81.1

Weather Map
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wmap_A
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 (7,2,3,4)
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Ground Weather Radar Station Dover AFB, DE
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.