Monday, October23, 2017 L-36.com


Marine Weather and Tides
Gratiot, OH

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 7:48AMSunset 6:38PM Monday October 23, 2017 7:34 AM EDT (11:34 UTC) Moonrise 10:15AMMoonset 8:25PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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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7 Day Forecast for Marine Location Near Gratiot, OH
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location: 39.99, -82.23     debug


Area Discussion for - Pittsburgh, PA
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Fxus61 kpbz 231115
afdpbz
area forecast discussion
national weather service pittsburgh pa
715 am edt Mon oct 23 2017

Synopsis
A cold front will return rain to the area through tonight. Low
pressure will maintain shower chances and cool temperatures
through mid week.

Near term until 6 pm this evening
Quick update around sunrise for an area of rain across
southwestern pennsylvania making its way north. This is well in
advance of the primary rain shield and have added showers just
for the next couple of hours. Previous discussion follows.

Complex system will bringing rain and wind to the area today.

Deepening 500mb low will move from the lower mississippi valley
north-northeastward toward the ohio valley by this afternoon.

Strong shortwave energy will rotate around the upper low as it
moves toward the region. At the surface, low pressure will
develop on the northern flank of the cutoff system this
afternoon, and its accompanying surface front, will stretch from
the upper midwest low pressure, southward, all the way into the
gulf of mexico. As the entire system deepens, wind fields
throughout the atmosphere will strengthen, further enhancing the
system. Strong winds aloft will pull moisture northward from
the gulf, while low-level winds, on the eastern side of the
system, will tap into atlantic moisture. This process will
enhance rainfall coverage and intensity ahead of the boundary as
it swings eastward. The main rain-shield will begin to
overspread my western counties early this afternoon, with full
coverage of the region expected by early evening. Scattered
showers could develop ahead of the main area of rain under
height falls and low-level moisture convergence, but this should
remain light. Rain could become heavy at times, directly ahead
the surface front, as the increasing large scale ascension and
low-level convergence interact with the substantial atmospheric
moisture. Ballpark model timing would place the risk for heavier
rain over ohio northern WV late this afternoon and evening.

Tightening surface pressure gradient this afternoon, and
lowering mixing heights, will increase surface winds today and
promote stronger gusts, with the highest over the eastern
ridges. Models still not in real good agreement on gust strength
in the lower elevations, however occasional gusts to 40mph are
possible in the ridges.

Temperatures will remain warm today, with readings 5 to 10
degrees above normal.

Short term 6 pm this evening through Wednesday
500mb low will interact with strong northern stream energy
diving southward from the northern plains into the midwest
tonight. This phasing will further deepen the surface low,
which by this time, will be moving rapidly northward over the
western great lakes. The upper level phasing and strong wind
field aloft will increase the forward speed of the surface front.

This will mean the threat for heavy rain continues just ahead
of the boundary, but it will not last long as it streaks east-
northeastward. The heaviest rain should exit the region shortly
before midnight. By late tonight the northern energy will take
over, as it absorbs what is left of the southern low. As this
process ensues, a large dry slot will develop ahead of the main
upper low, decreasing rainfall coverage into Tuesday. The area
will remain in the dry slot through Tuesday morning, until a
second surface front shortwave trough rolls through Tuesday
afternoon. The risk for scattered showers will return and this
will be the initial push of the much colder air.

A second dry slot develops Tuesday night, so would expect most
of the region to remain dry. However, the strong cold air
advection will be under way.

The main trough axis looks to slowly cross the region on
Wednesday, continuing the cold air advection and returning the
risk for scattered showers. High temperatures on Wednesday will
be 10 to 15 degrees below normal.

Long term Wednesday night through Sunday
The chance for showers will come to an end late Wednesday night
as the upper low moves east. Thursday and Friday should remain
cool and dry. While the ECMWF and GFS have general agreement of
low pressure dragging a cold front to the area for the weekend,
the models have shown little consistency in the speed of the
front and when any precipitation would arrive. Have stuck close
to the superblend for this portion of the forecast.

Aviation 11z Monday through Friday
Vfr conditions will continue through most of the morning as
high pressure erodes in advance of midwestern low pressure.

Expect condition deterioration to low-end MVFR through the
afternoon as that trough advances and spreads rain over the
region.

Outlook
Periodic restrictions will continue into early Thursday with
the region under upper troughing.

Pbz watches warnings advisories
Md... None.

Oh... None.

Pa... None.

Wv... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OWXO1 - Old Woman Creek, OH 97 mi109 min SE 2.9 65°F 1015 hPa50°F
HHLO1 - Huron Light, OH 99 mi34 min S 8 G 12 65°F 1013.5 hPa (-1.4)

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newark, Newark Heath Airport, OH13 mi40 minN 010.00 miPartly Cloudy63°F51°F65%1014.5 hPa
Zanesville, Zanesville Municipal Airport, OH18 mi41 minSE 810.00 miFair64°F52°F65%1015.3 hPa

Wind History from VTA (wind in knots)
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Last 24hrCalmCalmCalmSE5S6SW7S10S10S8S6SE3CalmCalmCalmCalmCalmW3CalmCalmCalmSE3SE3SE5Calm
1 day agoCalmCalmCalmCalmCalmS5S6SE4S7SE4S3S3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmSE3CalmCalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Pittsburgh, PA (7,2,3,4)
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Ground Weather Radar Station Cleveland, OH
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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.