Thursday, November23, 2017 L-36.com


Marine Weather and Tides
Harrisburg, PA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:02AMSunset 4:46PM Thursday November 23, 2017 9:45 AM EST (14:45 UTC) Moonrise 11:03AMMoonset 9:09PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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- 932 Am Est Thu Nov 23 2017
Rest of today..W winds 5 kt. Waves less than 1 ft.
Tonight..NW winds around 5 kt. Waves flat.
Fri..SW winds 5 kt. Waves less than 1 ft.
Fri night..S winds 5 kt. Waves less than 1 ft.
Sat..SW winds 5 kt. Waves less than 1 ft.
Sat night..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Sun..NW winds 10 to 15 kt...diminishing to 5 kt after midnight. Waves 1 to 2 ft.
Mon..SW winds 5 kt. Waves less than 1 ft.
ANZ500 932 Am Est Thu Nov 23 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain over the waters through Friday night. A cold front will approach early Saturday before crossing Saturday night. High pressure will return for Sunday and Monday. A small craft advisory will likely be issued for Saturday night and Sunday.

7 Day Forecast for Marine Location Near Harrisburg, PA
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location: 40.28, -76.89     debug


Area Discussion for - State College, PA
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Fxus61 kctp 231244
afdctp
area forecast discussion
national weather service state college pa
744 am est Thu nov 23 2017

Synopsis
High pressure will build into the area bringing dry weather and
temperatures very close to average for thanksgiving today. The
high pressure ridge will slowly drift over and east of the area
on Friday and early Saturday ahead of a frontal system which
will bring a chance of precipitation to the area this weekend.

Near term until 6 pm this evening
Quiet thanksgiving day weather for the area, with high pressure
east of here. Will still have some lower stratus across
northern half of area this morning before mid and high clouds
move into the area by the afternoon. Temperatures will top out
very close to average.

Short term 6 pm this evening through 6 pm Friday
High pressure over the area tonight with quiet weather. Temperatures
close to or a couple degrees above average.

Long term Friday night through Wednesday
Weak ridging aloft in advance of next system Friday and Friday
night. Expect a somewhat milder day Friday, as surface high
passes off the coast and return southwest flow ensues.

Cold front approaches region on Saturday. Scattered rain
showers will likely accompany the front on sat, followed by a
period of lake effect snow showers Sat night into Sunday, as
another blast of seasonably chilly air charges across the
relatively mild waters of the grt lks. Ecens and GEFS both
support below normal temperatures Sunday, as deep upper level
trough swings over the northeast states.

As has been the case all fall, the colder weather will be short
lived with dry weather and mild temperatures returning for at
least the first half of the upcoming work week.

Aviation 13z Thursday through Monday
Bkn-ovc layer of MVFR to low-endVFR strato CU clouds will
persist across the central and northern mountains of
pennsylvania through the mid morning hours today. Afterward, the
low-mid level ridge of high pressure over the ohio valley will
flatten out and drift over the state this afternoon and evening.

The strato CU area will erode from the outside inward late this
morning as the mean low level flow backs around to 240-260
degrees causing the tap of upstream moisture off the great lakes
to vanish. Afterward, an area of bkn alto CU (based at 080-120
kft agl) and cirrus will slide east from the ohio valley and
across central pa and the susq valley this afternoon and evening
as milder air aloft streams east out of the midwest states.

The wnw (early) to wsw winds this (afternoon and tonight) will
be generally less than 10 kts.

Vfr conditions will prevail into Friday.

The overall pattern favors no big weather systems through the
upcoming weekend and into early next week, but frontal passages
with limited moisture are expected every few days.

Best wishes for a nice and relaxing thanksgiving.

Outlook...

fri... No sig wx expected.

Sat... Chance of rain snow showers.

Sun... Chance of snow showers across the NW in the morning.

Otherwise no sig wx expected.

Mon... No sig wx.

Ctp watches warnings advisories
None.

Synopsis... Ross
near term... Ross
short term... Ross
long term... Ross rxr
aviation... Lambert


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 72 mi45 min NNW 4.1 G 6 36°F 53°F1022.2 hPa (+0.7)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 76 mi45 min W 6 G 8 35°F 1022.5 hPa (+0.7)
CHCM2 - 8573927 - Chesapeake City, MD 77 mi45 min WNW 5.1 G 7 34°F 47°F1022.4 hPa (+0.9)

Wind History for Baltimore, MD
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G8

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harrisburg, Capital City Airport, PA4 mi1.8 hrsWSW 410.00 miFair30°F19°F64%1022.1 hPa
Harrisburg, Harrisburg International Airport, PA8 mi49 minN 010.00 miFair35°F21°F59%1021.8 hPa
Muir Army Air Field / Indiantown, PA20 mi49 minWNW 310.00 miFair33°F18°F55%1021.8 hPa

Wind History from CXY (wind in knots)
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W10NW10W5NW6NW7W7NW5W5W4W4W44
1 day agoNE3N3CalmS7SW9S7S8SW4S6N3CalmCalmNW3CalmCalmCalmCalmCalmCalmCalmCalmCalmNW4NW7
G19
2 days agoW10NW11
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SW10SW9SW6W4W3CalmCalmCalmCalmCalmCalmCalmCalmCalmSW3CalmCalmCalm

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Thu -- 01:21 AM EST     2.78 feet High Tide
Thu -- 06:57 AM EST     Sunrise
Thu -- 09:31 AM EST     0.59 feet Low Tide
Thu -- 10:57 AM EST     Moonrise
Thu -- 01:32 PM EST     1.66 feet High Tide
Thu -- 04:43 PM EST     Sunset
Thu -- 08:07 PM EST     0.20 feet Low Tide
Thu -- 09:07 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.42.82.72.52.21.81.410.80.60.60.91.31.61.61.51.20.90.50.30.20.30.71.3

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
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Havre de Grace
Click for Map
Thu -- 12:00 AM EST     2.28 feet High Tide
Thu -- 06:57 AM EST     Sunrise
Thu -- 07:18 AM EST     0.08 feet Low Tide
Thu -- 10:57 AM EST     Moonrise
Thu -- 01:06 PM EST     1.65 feet High Tide
Thu -- 04:43 PM EST     Sunset
Thu -- 06:54 PM EST     0.25 feet Low Tide
Thu -- 09:07 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.32.21.81.410.60.30.10.10.40.81.21.51.61.61.310.60.30.20.40.81.31.8

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for State College, PA (9,2,3,4)
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Ground Weather Radar Station State College, PA
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weather_mapweather_map weather_map

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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 numerious 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.