Saturday, November17, 2018 L-36.com


Marine Weather and Tides
Harrisburg, PA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:55AMSunset 4:50PM Saturday November 17, 2018 1:58 PM EST (18:58 UTC) Moonrise 2:15PMMoonset 12:48AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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- 1237 Pm Est Sat Nov 17 2018
This afternoon..W winds 10 kt. Waves 1 ft.
Tonight..N winds 5 kt. Waves less than 1 ft.
Sun..E winds 5 kt. Waves flat.
Sun night..SE winds 5 kt. Waves flat.
Mon..NW winds around 5 kt. Waves flat.
Mon night..NW winds 5 kt. Waves flat. A chance of showers.
Tue..NW winds 5 to 10 kt. Waves 1 ft.
Wed..W winds 5 to 10 kt. Waves 1 ft.
ANZ500 1237 Pm Est Sat Nov 17 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain overhead through tonight before shifting offshore on Sunday. SEveral waves of low pressure and their associated fronts will move near the waters through the middle of next week.


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 171354
afdctp
area forecast discussion
national weather service state college pa
854 am est Sat nov 17 2018

Synopsis
The weather pattern will continue to feature colder than average
temperatures through thanksgiving day. Several weak disturbances
will bring light precipitation to the area through midweek with
minor snow accumulations most likely across the northern tier.

Near term through tonight
Allowed winter wx advisory to expire, but there could still be
a few slick icy spots or residual black ice over the highest
elevations this morning especially on bridges, overpasses, and
secondary or untreated roads.

A rather gloomy day is in store for most of central pa as weak
cyclonic-upslope flow keeps the low level moisture locked in
over central pa. The best chance for brightening skies will be
over the SE where just enough downsloping flow is possible to
allow some peeks of sun, but forecast soundings are not
optimistic about significant clearing. Western and northern
elevations could see some light snow showers or flurries, but no
real accums are expected.

Clouds and small chances for some snows showers over the NW will
continue overnight. Lows in the 20s will average several degrees
below what mid november lows should be.

Short term Sunday
Models agree in taking a fast moving low amplitude shortwave
into the region Sunday, with the northern half of the forecast
area highlighted with the chance of some light precipitation.

Qpf is expected to be about .10" or less on average with a
coating to an inch of snow possible in a few locations.

Temperatures rising into the mid and upper 30s over the SRN 2 3
or so of the area will work to limit snow accums on road
surfaces. Northern areas where temps will stay closer to
freezing could see untreated roads get slippery.

Long term Sunday night through Friday
A large upper level low will be located over hudson's bay
canada. This system will dominate the pattern over the eastern
us with several weak waves embedded in the broad cyclonic flow
advertised to bring periods of light precip to the area through
the middle of next week. Timing and separation of systems in
such fast flow is difficult so forecast confidence on details is
relatively low.

The first system is a slow moving front that the models use to
ripple several weak surface waves along, keeping the chance for
some light snow or a mix of rain and snow in the forecast into
Monday night.

After a very brief break Tuesday, a new cold front is made to
pass through the area later Tuesday and Tuesday night, with
drier weather finally expected to arrive for mid week through
thanksgiving day into Friday.

Aviation 14z Saturday through Wednesday
12z tafs sent.

Minor adjustments made. Conditions starting to improve
in some spots.

Low clouds and gusty winds will be across much of the area
today, given a west to northwest flow of air across the great
lakes.

Outlook
Sun... Low CIGS possible central mountains. Light snow possible
northern pa.

Mon... Low CIGS possible, especially in the morning.

Tue... Am low CIGS possible W mtns.

Wed... No sig wx expected.

Climate
Daily record snowfall occurred at harrisburg and williamsport
for the second day in a row.

0.5 inches yesterday at harrisburg broke the old record of a
trace set in 1985. The 2-day storm total is 8.8 inches which is
tied for 5th in rankings for 2-day november snowfall.

2.4 inches yesterday at williamsport broke the old record of 0.4
inches set in 1997. The 2-day storm total is 10.6 inches which
ranks as the 3rd largest 2-day november snowfall on record.

Ctp watches warnings advisories
None.

Synopsis... La corte steinbugl
near term... La corte steinbugl
short term... La corte
long term... La corte
aviation... Martin
climate... La corte steinbugl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 72 mi47 min NNW 4.1 G 13 46°F 55°F1023.7 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 76 mi41 min NW 8.9 G 11 46°F 1023.9 hPa
CHCM2 - 8573927 - Chesapeake City, MD 77 mi41 min NW 5.1 G 11 47°F 46°F1023.6 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harrisburg, Capital City Airport, PA4 mi63 minW 8 G 1710.00 miA Few Clouds45°F28°F52%1023.7 hPa
Harrisburg, Harrisburg International Airport, PA8 mi63 minW 1110.00 miMostly Cloudy46°F30°F56%1023.6 hPa
Muir Army Air Field / Indiantown, PA20 mi63 minW 810.00 miOvercast45°F28°F54%1023.3 hPa

Wind History from CXY (wind in knots)
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1 day agoE3E8E9E11NE9E10E8E10NE10NE6N4NW4NW9NW8NW10NW10W6W7W8NW8W7W11W15
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2 days agoNW9NW9NW8N5N6N5CalmN6NE7NE6E10E7E6E6E6E8E6E9E11E12E9E6E7NE8

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Sat -- 12:01 AM EST     0.71 feet Low Tide
Sat -- 12:46 AM EST     Moonset
Sat -- 05:26 AM EST     2.44 feet High Tide
Sat -- 06:50 AM EST     Sunrise
Sat -- 01:24 PM EST     0.52 feet Low Tide
Sat -- 02:10 PM EST     Moonrise
Sat -- 04:47 PM EST     Sunset
Sat -- 06:10 PM EST     2.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.81.21.72.12.42.42.221.61.30.90.70.50.60.91.41.8221.81.51.31

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland (2)
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Havre de Grace
Click for Map
Sat -- 12:46 AM EST     Moonset
Sat -- 04:33 AM EST     2.04 feet High Tide
Sat -- 06:50 AM EST     Sunrise
Sat -- 11:56 AM EST     0.43 feet Low Tide
Sat -- 02:10 PM EST     Moonrise
Sat -- 04:47 PM EST     Sunset
Sat -- 05:17 PM EST     1.68 feet High Tide
Sat -- 11:41 PM EST     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.81.11.41.8221.91.61.310.70.50.40.50.81.21.51.71.61.51.310.80.6

Weather Map and Satellite Images
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wmap_A
GOES 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.
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Wind Forecast for State College, PA (13,3,4,5)
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Ground Weather Radar Station State College, PA
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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.