Saturday, December7, 2019
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Marine Weather and Tides
Jonesville, VA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:27AMSunset 5:15PM Saturday December 7, 2019 6:00 PM EST (23:00 UTC) Moonrise 2:50PMMoonset 2:49AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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 Jonesville, VA
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location: 36.66, -82.99     debug


Area Discussion for - Morristown, TN
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FXUS64 KMRX 072043 AFDMRX

AREA FORECAST DISCUSSION National Weather Service Morristown TN 343 PM EST Sat Dec 7 2019

SHORT TERM. (Tonight and Tomorrow) .

Quiet weather in store over the next 24 hours. Surface high pressure still located to our north-northeast which will continue to provide light northerly flow at the surface into this evening and overnight. Overnight lows will be around 5 to 8 degrees above normal tonight with lows ranging from the lower 30s across SWVA to the lower 40s down around the Chattanooga area.

As the surface high continues to shift eastward overnight, winds shift from north to southeast by tomorrow morning/early afternoon. With this wind shift, moisture will begin to increase ahead of our next system. This will bring in some clouds later in the day from southwest to northeast. Highs will be in the low to mid 50s for most areas, which is near normal to a few degrees above normal. Will keep tomorrow dry as the incoming system is just beyond this period.

SR

LONG TERM. (Sunday night through Saturday) .

At the beginning of this period on Sunday night, we will be under an almost zonal WSW upper level flow, in between a couple of weather systems, while at the surface we will be in the early stages of a southerly return flow as the surface high continues to slide to the east. The next cold front to affect our area at that time will be located well west of here stretching from the central Great Lakes SWWD into the High Plains.

Also Sunday night along with the surface return flow there will be stronger return flow aloft that will have pretty good isentropic lift and enough moisture to warrant some POPs. This deep return flow looks like it will warm-up the airmass enough for all the precip Sunday night to be liquid. Also with this return flow, was looking at the possibility of a mountain wave event, but wind speed aloft are only moderate and the wind angle is too parallel to the ridgeline for a good mountain wave event.

That next cold front will be sliding through the area from the WNW on Tuesday, but with the upper lift and moisture lagging behind to have precip lingering into Tuesday night. Temps will be dropping behind the front during the day in some areas. Precip will be trying to change over to snow during as it exits, but looks like it would be minimal amounts with this system.

By Thursday models are diverging somewhat with chances of precip, with GFS looking far too wet in comparison with Blends. By Thursday night it looks like moisture will spread over the area with increasing chances of precip. Some wintry weather is possible but moisture and temperature profiles don't look favorable for anything significant Thursday night and Friday.

AVIATION. 18Z TAF DISCUSSION.

VFR conditions expected through the period with light northerly flow in place due to surface high pressure just off to our north-northeast. Low/mid CIGs move in later in the period but still VFR. Winds gradually shift to southerly first at CHA overnight, then TYS and TRI but beyond this TAF period.


PRELIMINARY POINT TEMPS/POPS. Chattanooga Airport, TN 42 56 49 65 53 / 0 10 60 70 80 Knoxville McGhee Tyson Airport, TN 38 57 46 63 52 / 0 10 60 80 80 Oak Ridge, TN 38 56 46 62 50 / 0 10 70 80 90 Tri Cities Airport, TN 33 53 41 61 51 / 0 0 50 80 90

MRX WATCHES/WARNINGS/ADVISORIES. NC . NONE. TN . NONE. VA . NONE.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lee County Airport, VA12 mi65 minno data10.00 miFair48°F37°F66%0 hPa

Link to 5 minute data for K0VG

Wind History from 0VG (wind in knots)
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Morristown, TN (18,4,5,8)
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Ground Weather Radar Station Knoxville/Tri Cities, TN
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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.