Friday, March24, 2017 L-36.com


Marine Weather and Tides
Harrisburg, PA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:01AMSunset 7:25PM Friday March 24, 2017 5:59 PM EDT (21:59 UTC) Moonrise 4:04AMMoonset 2:47PM Illumination 8% Phase: Waning Crescent; Moon at 27 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
    EDIT      (on/off)   Help
ANZ530 Chesapeake Bay North Of Pooles Island- 431 Pm Edt Fri Mar 24 2017
.small craft advisory in effect until midnight edt tonight...
Rest of this afternoon..S winds 15 kt with gusts to 20 kt. Waves 2 ft.
Tonight..SW winds 10 to 15 kt with gusts to 20 kt... Diminishing to 5 kt late. Waves 1 to 2 ft.
Sat..S winds 5 kt. Waves less than 1 ft.
Sat night..SE winds 5 kt. Waves less than 1 ft.
Sun..E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sun night..SE winds 5 to 10 kt. Waves 1 ft. Showers.
Mon..S winds 5 to 10 kt. Waves 1 ft or less. Showers... Mainly in the morning.
Tue..W winds 5 kt. Waves less than 1 ft. A chance of showers.
ANZ500 431 Pm Edt Fri Mar 24 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will drift east to bermuda through this evening. Two low pressure systems will enter and weaken over the midwest Saturday and Monday night. Small craft advisories may be needed for portions of the waters Sunday and Sunday night.

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


Area Discussion for - State College, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kctp 242015
afdctp
area forecast discussion
national weather service state college pa
415 pm edt Fri mar 24 2017

Synopsis
A warm front will remain north of the region through Saturday
before sagging south ward across central pennsylvania Saturday
night and Sunday. Very mild conditions are expected tonight and
Sunday as we enjoy the warm sector south of the frontal
boundary. However... Increasing clouds and southeast flow are
expected on Sunday as the boundary sags southward as a backdoor
cold front... Bringing cooler conditions and eventually some
patchy drizzle or light rain. Unsettled conditions will last
from late Sunday through Tuesday as a series of disturbances
interact with the front. No heavy rain is expected during this
timeframe however.

Near term /until 6 am Saturday morning/
Much milder air flooding into western and central pa at mid
afternoon as warm front jumps northward of the ny/pa border. A
very rapid warm up ensued at midday with afternoon temps
eventually ending up some 20 to 30 degrees higher than this
morning. The aforementioned warm front remains north of the
region tonight... Bringing a mainly fair and mild Friday night.

Lows into Saturday should range from the upper 40s to low 50s.

There will be areas of low clouds and drizzle in the vicinity of
the ny border adjacent to the stalling sfc boundary. Areas
farther south stand to see the least cloud cover.

Short term /6 am Saturday morning through 6 pm Saturday/
Saturday will be the best of the weekend days as the quasi
stationary front remains north of or along the pa/ny border.

Very mild temperatures are expected again with maxes ranging
from the mid 50s north where more in the way of clouds and
patchy drizzle or light showers are expected... To the upper 60s
south where a good deal of sunshine is expected. There could be
some isolated to scattered afternoon showers in the increasingly
warm and unstable air central and south... But most will stay
dry.

Long term /Saturday night through Friday/
Frontal boundary sags back into the region from the north
(pushed by a high pressure area sliding SE across S ontario) on
Sunday as a low approaches from the ohio valley. This will sag
cooler and more moist air into the region. Light showers/drizzle
possible through much of the day, but main precip event impacts
central pa Sun night into early Mon as low moves through. Qpf
looks to be around 0.50 inch.

Temps Sunday will be noticably cooler behind the backdoor cold
front and a likelihood of rain. However, above average
temperatures (especially nighttime) appear very likely through
early next week, as GEFS indicates pa remains beneath a mean
upper level ridge and plume of anomalous pwats.

The chance of showers again spikes with passage of next
shortwave Tuesday into Wednesday and another one to start the
weekend.

Aviation /20z Friday through Wednesday/
Vfr south and MVFR north as warm front lifts into southern ny
state. This will be the trend overnight as generallyVFR
conditions are seen south and MVFR to LCL ifr posbl north in low
clouds and drizzle near stationary frontal boundary over
southern ny.

Outlook...

sat... MainlyVFR. Chance of rain northern 1/2 airspace.

Sun-tue... Sub-vfr with periods of rain.

Wed... Mffr toVFR.

Ctp watches/warnings/advisories
None.

Synopsis... Devoir
near term... Grumm/devoir/lambert
short term... Grumm/devoir/lambert
long term... Rxr
aviation... Devoir/steinbugl


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 72 mi42 min WSW 7 G 11 59°F 44°F1021.7 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 76 mi42 min S 7 G 9.9 59°F 1022.1 hPa
CHCM2 - 8573927 - Chesapeake City, MD 77 mi42 min S 9.9 G 18 55°F 45°F1022 hPa

Wind History for Baltimore, MD
(wind in knots)    EDIT      (on/off)   Help
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last
24hr
SE9
S5
G8
S3
S3
SE2
S3
G6
SW3
W2
SW3
G6
W3
SW2
SW3
SW4
G7
SW6
G10
SW4
SW4
G8
SW6
G11
W9
G15
W10
G16
W9
G12
SW6
G9
SW7
G10
W10
G13
SW5
G9
1 day
ago
N17
G21
N14
G20
N10
G14
NE12
G17
NE11
G14
NE8
G11
NE8
G11
NE8
G12
NE6
NE7
G10
NE8
NE8
NE6
NE7
NE6
NE7
G10
NE6
NE1
G4
SW3
SW4
G8
SE4
S7
S9
S10
G14
2 days
ago
N9
G13
NW3
G8
NW4
G7
NW2
SW2
W4
NW3
G6
NW3
--
N7
G13
N7
G10
N8
G13
N17
G28
N15
G24
N17
G23
N18
G25
N14
G20
N20
G27
N14
G23
N13
G22
N15
G21
N20
G27
N16
G22
NE14
G21

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harrisburg, Capital City Airport, PA4 mi64 minSSW 610.00 miFair58°F39°F50%1020.8 hPa
Harrisburg, Harrisburg International Airport, PA8 mi64 minVar 410.00 miOvercast57°F39°F53%1020.6 hPa
Muir Army Air Field / Indiantown, PA20 mi62 minWSW 1010.00 miA Few Clouds55°F40°F59%1020.9 hPa

Wind History from CXY (wind in knots)
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last 24hrSW5S6S3CalmSE5SE6SE6SE9SE8SE5SE5E4E433S45S6S9
G15
S9SW9
G16
SW9SW11
G15
SW6
1 day agoNW13
G19
N13
G17
N7N5N7N5N4N4N3N6N4N5W3NW4W36W53Calm35SW8CalmSW5
2 days agoW8W10SW5W5W5W6W5W4NW11NW7NW12
G20
NW16
G23
NW20
G30
NW13
G23
NW14
G19
N21
G28
N14
G25
NW15
G26
NW19
G27
NW16
G27
NW17
G22
N14
G22
N14
G21
NW17
G22

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Port Deposit
Click for Map
Fri -- 03:58 AM EDT     0.56 feet Low Tide
Fri -- 04:59 AM EDT     Moonrise
Fri -- 07:01 AM EDT     Sunrise
Fri -- 08:22 AM EDT     1.96 feet High Tide
Fri -- 03:38 PM EDT     0.20 feet Low Tide
Fri -- 03:45 PM EDT     Moonset
Fri -- 07:20 PM EDT     Sunset
Fri -- 09:00 PM EDT     2.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.10.80.60.60.71.21.61.91.91.71.41.10.70.40.20.20.51.11.72.22.32.32

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
   EDIT      (on/off)   Help   One Week of Data
Havre de Grace
Click for Map
Fri -- 02:25 AM EDT     0.36 feet Low Tide
Fri -- 04:58 AM EDT     Moonrise
Fri -- 07:01 AM EDT     Sunrise
Fri -- 08:06 AM EDT     1.78 feet High Tide
Fri -- 02:03 PM EDT     0.45 feet Low Tide
Fri -- 03:45 PM EDT     Moonset
Fri -- 07:20 PM EDT     Sunset
Fri -- 07:58 PM EDT     2.28 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.60.40.40.611.41.71.81.71.51.20.80.60.50.60.91.41.82.22.32.21.91.6

Weather Map and Satellite Images
       (on/off)   Help
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 (17,4,5,8)
      (on/off)   Help

Ground Weather Radar Station State College, PA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.