Monday, January22, 2018 L-36.com


Marine Weather and Tides
Trevorton, 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 7:20AMSunset 5:14PM Monday January 22, 2018 7:21 AM EST (12:21 UTC) Moonrise 10:30AMMoonset 10:46PM Illumination 32% Phase: Waxing Crescent; Moon at 6 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- 631 Am Est Mon Jan 22 2018
.small craft advisory in effect from late tonight through Tuesday afternoon...
Today..S winds 5 kt. Waves less than 1 ft. Scattered sprinkles this morning.
Tonight..S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 1 to 2 ft. Showers.
Tue..S winds 15 to 20 kt...becoming W 10 to 15 kt late. Gusts up to 30 kt. Waves 3 ft. Showers.
Tue night..W winds 10 kt. Waves 1 ft.
Wed..W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Wed night..NW winds 5 to 10 kt. Waves 1 ft.
Thu..N winds 5 to 10 kt. Waves 1 ft or less.
Fri..SE winds 5 kt. Waves less than 1 ft.
ANZ500 631 Am Est Mon Jan 22 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain off the southeast coast today. A cold front will approach the area Monday night and cross the area Tuesday. This will be followed by another area of high pressure for the second half of the week. Small craft advisories will likely be needed Tuesday night through Thursday, with gales possible Tuesday with the frontal passage.

7 Day Forecast for Marine Location Near Trevorton, PA
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location: 40.75, -76.74     debug


Area Discussion for - State College, PA
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Fxus61 kctp 220840
afdctp
area forecast discussion
national weather service state college pa
340 am est Mon jan 22 2018

Synopsis
A warm front over the interstate 80 corridor this morning will
lift slowly north today. This weather feature will bring
occasional light rain or drizzle and areas of fog this morning,
with just some lingering isolated to scattered showers for this
afternoon.

A potent area of low pressure moving across the great lakes
will push a trailing cold front through the commonwealth on
Tuesday. Temperatures will rise well above normal today and
stay there through early Tuesday, before falling back to near or
slightly below normal Wednesday and Thursday. A rebound to
above normal temperatures will occur again by next weekend.

Near term until 6 pm this evening
Surface warm front extended near the rt22 322 corridor in
south-central pa early this morning with weak isentropic lift
from the southwest producing widespread low stratus to its north
and east, and a dual-multi layer of stratocu and alto CU in the
warm sector across the southern tier of pa.

Expect occasional light rain, drizzle through much of this
morning, before some improvement with just some isolated-sctd
showers leftover this afternoon as the warm front lifts across
the northern mtns and eventually into new york state by late
today.

The weak low-level isentropic... And orographic lift over the
mtns and interface of the shallow cool air and warmer moist air
aloft will yield areas of dense fog through about 14-15z today
across the higher terrain - AOA 1800 ft msl.

Temps will remain relatively mild for late january and mainly
in the upper 30s to lower 40s. A few pockets of cooler air
around 35f will persist across the middle susq valley early
today. Blended model guidance points toward a very mild
afternoon with temps ranging from the mid-upper 40s across the
ne to the balmy upper 50s over the southern tier counties. These
highs will depart from normal by 13-15f across the NE and by
nearly 30 degrees over the laurel highlands.

Short term 6 pm this evening through 6 pm Tuesday
Mild weather will continue overnight. A few showers early on
will rapidly expand in coverage from SW to NE across the region
for the second half of the night as deepening uvvel develop
with the approach of the left exit region of a 130 kt upper jet
lifting NE from the tenn valley. The rain could fall heavy at
times for brief periods just ahead of an approaching cold front.

Cold front crosses central pa Tuesday morning with weak
secondary low forming in the lee of the appalachians supporting
a period of enhanced rainfall over the eastern 1 2 of pa on the
order of 0.50-0.75" (as front occludes into early Tuesday
afternoon). A rather potent, SW 50kt LLJ could also generate a
rumble of thunder. River ice concerns are addressed in the
hydrology section.

Gusty wsw winds, possibly as high as 40 to 45 mph occur in the
wake of the cold front Tuesday afternoon and evening.

Long term Tuesday night through Sunday
The progressive pattern will keep the mid late week cool-down
rather brief before temperatures moderate trend warmer into the
upcoming weekend.

Gusty westerly winds with top values between 35 and 45 mph will
continue Tuesday night, before gradually decreasing through the
day Wednesday.

Occasional snow showers are likely downwind of lake erie
Tuesday night and Wed but should only amount to light accums of
a coating to 2 inches in most places.

Dry wx under high pressure thu- Fri with chilly starts to the
day (especially in the east) with moderating temperatures
heading into the weekend as the next (weaker) low pressure
system lifts across the great lakes bringing chances for rain on
sat increasing into Sunday.

Aviation 08z Monday through Friday
Moist flow, along with calm winds and will continue to have vlifr
cigs across the northern mountains (kbfd) overnight, while
progressively higher CIGS are expected further south. Trapped
low level moisture along with calm winds has allowed fog mist to
develop overnight. These reduced vsbys, along reduced CIGS at
unv and ipt will continue through the early morning. Light
precipitation south of the front continues with light showers at
times at mdt and lns. While ipt and seg are lifr, areas across
southeast pa (kmdt klns) at 08z, areVFR. Latest model
soundings and MOS guidance support the idea of a possible period
of MVFR CIGS vsbys roughly between 10z-14z. Expect
predominantly MVFR CIGS at kjst overnight, where a southerly
flow results in drying downsloping off of adjacent higher
terrain.

Warm front is progged to lift through western pa on Monday,
resulting in a return toVFR conditions along the spine of the
alleghenies, including kjst and possibly kbfd kaoo. Elsewhere,
modest improvement will come slowly across the eastern half of
pa on the cold side of the front.

Llws problem will become a concern Monday evening, as a very
strong low level jet overspreads the area ahead of an
approaching cold front.

Outlook...

tue... Am rain low CIGS poss, then windy with pm shsn poss W mtns.

Wed... Am shsn possible W mtns.

Thu-fri... No sig wx expected.

Hydrology
Marietta gage mrtp1 pretty much steady right now, although ice
effects continue. The flood watch for this area lasts into
Monday afternoon. Due to the mild temperatures, there is a
potential for ice movement, but also deterioration thinning with
time. All locations along rivers and streams that have
significant ice buildup should monitor water levels closely for
the next several days.

The anticipated rainfall totals of 0.5 to 0.8 inches over the
next 48 hrs is much less than we had a few days ago, and the ice
is less pervasive extensive due to our relatively mild temps
(versus the period leading up to our previous significant
rainfall).

Ctp watches warnings advisories
Flood watch until 1 pm est this afternoon for paz065-066.

Synopsis... Lambert evanego
near term... Lambert evanego
short term... Lambert evanego
long term... Lambert rxr
aviation... Fitzgerald ceru
hydrology... Lambert


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MRCP1 - 8540433 - Marcus Hook, PA 96 mi52 min 41°F 35°F1020.4 hPa
CHCM2 - 8573927 - Chesapeake City, MD 98 mi52 min Calm G 1 38°F 33°F1021.1 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Selinsgrove Penn Valley Airport, PA8 mi29 minN 01.00 miFog/Mist34°F33°F97%1020.6 hPa
Muir Army Air Field / Indiantown, PA23 mi26 minN 010.00 miOvercast37°F36°F100%1021 hPa

Wind History from SEG (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3N4CalmN3CalmCalmCalmCalmCalmCalmCalm
1 day agoCalm3Calm5SW43SW44SW4SW4S3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalm4W5W4SW5SW7SW4SW4CalmCalmCalmCalmCalmCalmSW3CalmCalmCalmCalmCalmCalmSW4

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Mon -- 01:45 AM EST     2.00 feet High Tide
Mon -- 07:19 AM EST     Sunrise
Mon -- 09:26 AM EST     -0.34 feet Low Tide
Mon -- 10:27 AM EST     Moonrise
Mon -- 02:07 PM EST     1.42 feet High Tide
Mon -- 05:12 PM EST     Sunset
Mon -- 09:08 PM EST     -0.25 feet Low Tide
Mon -- 10:44 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.921.81.510.60.2-0.2-0.3-0.30.10.61.21.41.31.10.70.40.1-0.2-0.2-0.10.2

Tide / Current Tables for Charlestown, Northeast River, Maryland
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Charlestown
Click for Map
Mon -- 01:44 AM EST     1.56 feet High Tide
Mon -- 07:19 AM EST     Sunrise
Mon -- 08:24 AM EST     -0.26 feet Low Tide
Mon -- 10:26 AM EST     Moonrise
Mon -- 02:07 PM EST     1.13 feet High Tide
Mon -- 05:12 PM EST     Sunset
Mon -- 08:13 PM EST     -0.20 feet Low Tide
Mon -- 10:43 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.51.61.410.60.2-0.1-0.2-0.2-00.30.711.11.10.80.50.2-0.1-0.2-0.10.10.4

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 (7,2,3,4)
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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.