Tuesday, December7, 2021
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Marine Weather and Tides
Byesville, OH

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:35AMSunset 5:04PM Tuesday December 7, 2021 8:15 PM EST (01:15 UTC) Moonrise 11:13AMMoonset 8:43PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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 Byesville, OH
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location: 39.96, -81.61     debug


Area Discussion for - Pittsburgh, PA
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FXUS61 KPBZ 072357 AAA AFDPBZ

Area Forecast Discussion . UPDATED National Weather Service Pittsburgh PA 657 PM EST Tue Dec 7 2021

SYNOPSIS. An upper disturbance will provide light snow chances through Wednesday morning. High pressure returns dry weather for tomorrow night and Thursday. Temperatures will start a warming trend tomorrow, which will continue through the week.

NEAR TERM /THROUGH WEDNESDAY/. Only minor changes for the evening update. PoPs were changed to better reflect current conditions and latest 18z and hires model guidance. Models are focusing in on a swath of light snow showers overnight, north and west of PIT, for where any accumulations will occur. Rest of the forecast is in good shape.

Previous discussion . A shortwave trough will approach the lower Ohio Valley later tonight, and will cross southwest PA and the Appalachians by 00Z Thursday. Some lift will be supported by this wave via warm/vorticity advection. However, despite the southwest flow, the moisture feed will not be very strong and as the 12Z PIT sounding shows, there is a lot of dry air to overcome in the low levels. Thus, we are expecting only very light snow with this system, on the order of a half inch or less in most cases. The models have been struggling with this system the past few runs, and overall confidence is low. Any snow will pull east by afternoon as the trough axis crosses. Temperatures will remain below normal, generally in the 30s.

SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/. Surface high pressure and a relatively flat upper ridge will cross the region during the Wednesday night/Thursday period, with dry weather anticipated. Clouds will thicken and lower Thursday in a southwesterly flow, hindering insolation and high temperature recovery, although values will approach climatology.

Some very light precipitation will accompany a warm front Thursday night and Friday as it crosses the region. Moisture depth and lift will be unimpressive, leading to the light QPF. A period of mixed precipitation is still possible northeast of Pittsburgh initially as evaporational cooling could keep the boundary layer around freezing. However, it would not be long before ongoing warm advection causes a changeover to rain. Rain coverage may increase through the afternoon as moisture continues to increase, but overall, precipitation should remain light. Temperatures will take a jump in this pattern, with areas near and south of the Mason-Dixon Line approaching 60 degrees.

LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/. A trough over the Rockies and northern Plains at 00Z Saturday will propagate eastward, maintaining a neutral or slightly positive tilt as it arrives in the upper Ohio Valley by 12Z Sunday. A strong southwesterly moisture feed ahead of this trough will lead to a soaking rain Friday night and Saturday as surface low pressure tracks across Michigan. The GFS forecast of around 1.50 PWAT at Pittsburgh at 12Z Saturday would be well above the climatologic maximum for the date. GEFS QPF M-Climate is suggesting the potential for copious amounts of rain as well from Pittsburgh on south, especially in the Monongahela basin, where amounts could also challenge the top end of climatology. Possible impacts from this rain bear watching. The southwest flow will also continue a dramatic warmup, with temperatures climbing into the 60s. A few record highs could be approached.

A mix with/change to snow is then possible Saturday night and Sunday behind the system's cold front, although system progression will minimize any accumulation potential. Rising heights and surface high pressure will return dry weather Monday and Tuesday, with temperatures likely warming back above normal after a brief dip on Sunday.

AVIATION /00Z WEDNESDAY THROUGH SUNDAY/. VFR conditions will likely prevail into Wednesday morning. A weakening shortwave is expected to bring light snow to the region late tonight into early tomorrow morning. However, confidence isn't high for periodic restrictions due dry air entrainment at the sfc. In correlation with the Hi-Res models, added TEMPO lines for when vis/cig restriction could be experienced. Models are indicating an MVFR SC deck spreading across the region late Wednesday morning and through much of the afternoon. This would be associated with the passage of the upper trough and a period of weak cold air advection. VFR conditions are expected to return late afternoon/evening.

Outlook. The next best chance for widespread restrictions is Thursday night into Friday and over the weekend with an approaching low pressure system.

PBZ WATCHES/WARNINGS/ADVISORIES. PA . None. OH . None. WV . None.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Zanesville, Zanesville Municipal Airport, OH15 mi23 minN 410.00 miOvercast27°F13°F55%1022.7 hPa

Link to 5 minute data for KZZV

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