Friday, August18, 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 6:43AMSunset 8:22PM Friday August 18, 2017 5:55 PM EDT (21:55 UTC) Moonrise 2:12AMMoonset 5:02PM Illumination 12% Phase: Waning Crescent; Moon at 26 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 181843
afdpbz
area forecast discussion
national weather service pittsburgh pa
243 pm edt Fri aug 18 2017

Synopsis
Showers and possibly strong storms could roll through Saturday
afternoon and evening. Sunday will be the better of the two
weekend days for outdoor activities. Less humid this weekend as
well.

Near term through Saturday
Tonight, some clearing will be realized, but we will remain
under the influence of the upper trough. This could work in some
additional clouds, but meager moisture will quell any shower
chances. Lows will remain just above seasonal average values,
but with lower dewpoints invading, it will feel much fresher.

Another, fast-moving, shortwave trough will move into the area
tomorrow. Bolstered by cooling mid-level temperatures,
developing showers and thunderstorms should move quickly through
the forecast area. Model soundings show a speed MAX in the mid-
levels, coincident with at least some modest instability. This,
and the lowered freezing level to near 10kft should be enough to
pose at least a marginal severe threat in the afternoon hours.

Will continue to monitor this in the coming updates.

Short term Saturday night through Sunday night
A line of showers and storms will be exiting northern west virginia
and the mountains of southwest pennsylvania and western maryland
early Saturday evening. Dry weather will be invading from the west
with differential anti-cyclonic vorticity advection moving in.

Benign weather takes hold the balance of the short term.

Lowering humidity with dewpoints in the lower 60s will give us a
break from the recent run of upper 60s to lower 70s Sunday. H8
temps hover around seasonal norms 14c correlating to daytime highs
in the upper 70s to lower 80s. Bias corrected all blend was used
for temperatures.

Long term Monday through Friday
Highlights:
- warm and humid Monday and Tuesday
- cold front crosses Tuesday night into Wednesday
- dry and below normal temperatures
h5 heights above 590dm yield a warm afternoon Monday, however
mid level temps and proximity of high pressure over the mid
atlantic will keep the day dry. Down the road, isolated storms
could fire due to the elevated heat source in the higher terrain
so Monday afternoon evening isolated to scattered pops may be
added.

The main weather feature of the long term is a cold front
crossing Tuesday night into Wednesday morning. Long range models
provide above average confidence to warrant likely pops for the
entire region. With the boundary passing Tuesday night, do not
foresee a severe weather threat. High water is also not a
concern at this time with the speed of the system as it
traverses through the forecast area.

In wake of the baroclinic zone sprawling high pressure building
south from the great lakes offers cooler weather as h8 temps
fall below 10c. The passing mid level trough axis could ignite
daytime showers mainly north of lake erie Wednesday afternoon.

Added a slight chance for the aforementioned area.

Temperatures were constructed using a mixture of the superblend
and allblend.

Aviation 18z Friday through Wednesday
Showers and thunderstorms are dwindling west to east this
afternoon, but some re-development could occur along the cold
front still in the area.

Outside of any brief shower thunderstorm this afternoon,VFR
conditions are expected in altocu. Winds will increase through
the afternoon, gusting occasionally to near 20kts.

Tonight, clear and nearly calm conditions could produce some
valley fog, but this should largely be limited to favorable
sheltered locations.

Saturday, a fast moving disturbance will bring additional brief
restrictions as shower and thunderstorm chances increase in the
afternoon hours. Otherwise,VFR conditions are expected.

Outlook
Vfr conditions are expected the latter part of the weekend,
marred only by pre-dawn valley fog.

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 mi131 min SW 2.9 80°F 1010 hPa66°F
HHLO1 - Huron Light, OH 99 mi56 min W 12 G 20 79°F 1009.1 hPa (+0.3)

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newark, Newark Heath Airport, OH13 mi62 minW 1010.00 miA Few Clouds83°F63°F51%1010.2 hPa
Zanesville, Zanesville Municipal Airport, OH18 mi63 minWSW 910.00 miPartly Cloudy83°F62°F49%1010.3 hPa

Wind History from VTA (wind in knots)
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Last 24hrSW8SW8S7SW4S5SW4S4SW5SW5S4SW4SW5SW6SW5SW5W9W10W10W10W13W10W14
G19
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1 day agoSE5E6E4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS3SW8S7S10SW12
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2 days agoW5CalmCalmCalmCalmCalmNW3CalmCalmCalmCalmN3NE3CalmCalmE4E4E446E4N4N3E5

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
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Pittsburgh, PA (17,4,5,8)
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Ground Weather Radar Station Cleveland, OH
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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.