Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Millersville, PA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:20AMSunset 7:57PM Tuesday August 20, 2019 10:42 PM EDT (02:42 UTC) Moonrise 9:43PMMoonset 9:58AM 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- 1035 Pm Edt Tue Aug 20 2019
.small craft advisory in effect from Wednesday afternoon through Wednesday evening...
Rest of tonight..SE winds 5 kt. Waves flat. A slight chance of tstms with isolated showers.
Wed..S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. Scattered showers and tstms.
Wed night..S winds 10 to 15 kt with gusts to 20 kt...becoming sw 5 kt after midnight. Waves 1 to 2 ft. Scattered showers and tstms.
Thu..W winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Thu night..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Fri..N winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Fri night..N winds 5 kt. Waves less than 1 ft. A chance of showers.
Sat..NE winds around 5 kt. Waves 1 ft. A chance of showers in the morning.
Sun..E winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1035 Pm Edt Tue Aug 20 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure in the atlantic will promote a light southerly flow over the region into Wednesday. A cold front will approach the waters late Wednesday night into Thursday and stall near or south of the area into Friday. High pressure will then settle over the area Saturday into Sunday.


7 Day Forecast for Marine Location Near Millersville , PA
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location: 40, -76.4     debug


Area Discussion for - State College, PA
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Fxus61 kctp 210151
afdctp
area forecast discussion
national weather service state college pa
951 pm edt Tue aug 20 2019

Synopsis
It will remain very warm and humid through Wednesday. Scattered
showers and thunderstorms are expected overnight. A pair of
cold fronts will push southeast through the state late Wednesday
into early Thursday bringing additional storms and then cooler
and much less humid air will that will last into the weekend.

Near term until 6 am Wednesday morning
Diurnal convection has died out across central pa after an
active afternoon and evening over especially the lower
susquehanna river valley. Still an isolated shower or
thunderstorm can be expected across central and eastern areas
overnight. Meanwhile, MCS pushing through the glaks and ohio
valley is spreading a broken line of storms into western pa,
which would push into the alleghenies by 05z. Overall a slight
weakening trend is noted, but individual cells are still pretty
frisky for this late in the evening, so it could be noisy for
some parts of mainly western and perhaps into central pa
overnight into the wee hours of Wednesday morning.

Another warm muggy night across the region, with min temps in
the 60s to around 70f in the se.

Short term 6 am Wednesday morning through 6 pm Wednesday
Wednesday will see slightly higher probability for active
convection, mainly during the afternoon and evening as a more
vigorous upper shortwave and associated cold front pushes
southeast through the CWA late in the day and evening.

Spc has a broader mrgl risk covering the majority of our CWA on
Wednesday, at the SW edge of a fairly large slgt risk area
across upstate ny and WRN new england.

Long term Wednesday night through Tuesday
Secondary sfc cfront and cfa dropping SE from the glakes
Thursday should trigger a few afternoon showers tsra across
mainly the SE half of pa. 700 mb temps will likely cool off by
at least 2-3c during the day Thursday.

Look for refreshingly cooler MAX temps Thursday ranging from the
low to mid 70s over the northern mtns to the l-m 80s in the susq
valley. Rain risk will linger across south central pa on Friday
as the frontal boundary continues to sink southward into the
southern mid atlantic.

A sprawling area of canadian high pressure should bring a
multi-day stretch of fair weather to central pa Saturday to
Monday. Temperatures will be near average with pleasant and
warm afternoons and comfortably cool nights.

Aviation 02z Wednesday through Sunday
WidespreadVFR will continue into the evening, with only brief
restrictions this afternoon at terminals affected by the roaming
showers and thunderstorms.

Areas of low clouds and fog will form once again overnight,
before burning off within a couple of hours of sunrise wed.

Showers and thunderstorms will once again boil up for Wednesday
afternoon and evening associated with a cold front. They will
have the potential to bring brief restrictions, gusty winds and
hail.

Outlook
Thu... Pm thunderstorms southeast 1 2.

Fri... Chance of showers southern 1 4.

Sat-sun... Am fog possible.

Ctp watches warnings advisories
None.

Synopsis... La corte
near term... Devoir la corte
short term... La corte
long term... Gartner steinbugl
aviation... La corte ceru


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 45 mi72 min S 2.9 G 5.1 79°F 84°F1017.5 hPa
BLTM2 - 8574680 - Baltimore, MD 52 mi72 min SSW 1.9 G 4.1 79°F 84°F1016.7 hPa
DELD1 - 8551762 - Delaware City, DE 52 mi72 min SSW 4.1 G 7 79°F 81°F1017.5 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA10 mi49 minSSE 410.00 miPartly Cloudy78°F70°F76%1016.7 hPa
Harrisburg, Harrisburg International Airport, PA24 mi1.8 hrsSW 9 miMostly Cloudy78°F69°F74%1016.8 hPa

Link to 5 minute data for KLNS

Wind History from LNS (wind in knots)
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Last 24hrCalm--------CalmSE3CalmCalmCalmE6E76E4NE45SE6SE4----SE5W8SW3SE4
1 day agoN4CalmSE3--Calm----E3E3NW3CalmCalm--NW6W7--N6--W7NW5N8NE3S3Calm
2 days agoCalmCalmCalmCalmCalm--CalmSE3CalmCalm----44S5SW44S13
G18
S10S6N5NE12NE7E3

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
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Tue -- 02:29 AM EDT     2.98 feet High Tide
Tue -- 06:21 AM EDT     Sunrise
Tue -- 09:30 AM EDT     1.42 feet Low Tide
Tue -- 10:56 AM EDT     Moonset
Tue -- 02:23 PM EDT     3.03 feet High Tide
Tue -- 07:53 PM EDT     Sunset
Tue -- 09:47 PM EDT     0.84 feet Low Tide
Tue -- 10:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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22.62.932.82.52.11.81.61.41.51.72.22.7332.82.41.91.51.10.90.81.1

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland (2)
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Havre de Grace
Click for Map
Tue -- 01:36 AM EDT     2.49 feet High Tide
Tue -- 06:21 AM EDT     Sunrise
Tue -- 08:02 AM EDT     1.18 feet Low Tide
Tue -- 10:56 AM EDT     Moonset
Tue -- 01:30 PM EDT     2.54 feet High Tide
Tue -- 07:53 PM EDT     Sunset
Tue -- 08:19 PM EDT     0.70 feet Low Tide
Tue -- 10:41 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.42.52.321.71.51.31.21.31.51.92.32.52.52.321.51.20.90.70.811.5

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for State College, PA (22,6,7,8)
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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 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.