Friday, March24, 2017 L-36.com


Marine Weather and Tides
Union, WV

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:16AMSunset 7:39PM Friday March 24, 2017 6:03 PM EDT (22:03 UTC) Moonrise 4:13AMMoonset 3:07PM Illumination 8% Phase: Waning Crescent; Moon at 27 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 Union, WV
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location: 37.62, -80.47     debug


Area Discussion for - Blacksburg, VA
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Fxus61 krnk 241927
afdrnk
area forecast discussion
national weather service blacksburg va
327 pm edt Fri mar 24 2017

Synopsis
High pressure will continue to move off the virginia and north
carolina coast this weekend. A strong area of low pressure will
drift east over the southern plains with a trailing cold south
into texas. A warm front will reside from the great lakes region
to lake erie into Saturday.

Near term /through Saturday/
As of 300 pm edt Friday...

the center of a dry stable high pressure will continue to drift
off the va/nc coast into this weekend. As this system moves
further to the east, increasing areal coverage of southerly flow
will bring more warm air into the region. Today's highs were in
the 60s. Tomorrow's high will range from the upper 60s across
the mountains to mid 70s east of the blue ridge.

Even though the center of this stable high will continue to
move offshore, the western edge will remain over va-nc-sc into
the weekend. Warm moist air will continue to ride over this
lingering insitu wedge with only an increase in cloud cover
expected overnight into Saturday morning. Warm air and afternoon
mixing may produce some breaks in the clouds during the
afternoon. Instabilities increase some outside of the influence
of the wedge, particularly across southeastern west virginia.

With some orographical lift, a few showers/sprinkles may develop
across the mountains during afternoon heating.

Short term /Saturday night through Monday night/
As of 302 pm edt Friday...

warmer and moist this period. Models seem in agreement on
getting the cold front west of the appalachians Sunday, then
weakening it as it crosses over. Still plenty of southwest flow
aloft and southerly low level flow to increase moisture
convergence over the region. Will see best coverage of showers
west of the foothills into wv. Thunder threat depends on the how
quick the clouds/rainfall get into the area. By all accounts,
seems the thunder threat is going to be reduced some as rainfall
happens in the mountains by 8-11am Sunday. Best instability
lies across ky and south into the carolinas/georgia. Will have
chance thunder over WV into the nc mountains/foothills.

By Sunday night into Monday we are looking at main lift exiting
north, but still residual low level convergence along pre-
existing frontal zone and enough moisture to allow for showers
to hang around, especially in the mountains. Expect limited
sunshine, but with some breaks and warm air advection still
looking at highs Monday in the mid to upper 60s higher ridges,
with mainly lower to mid 70s elsewhere.

Monday night, next upstream shortwave and front approach, so
increased pops again after midnight in the southwest, but should
see better chances Tuesday.

Long term /Tuesday through Friday/
As of 142 pm edt Friday...

active pattern this period.

Upper-level low pressure system will arrive in our region early
Tuesday. Dynamics are marginally favorable for thunderstorms,
but if line of convection moves in sooner, lack of
thermodynamics will limit thunder threat.

High temperatures are expected to be in the 60s to lower 70s.

Wednesday should be dry with upper ridge building again.

Thursday, still dry as upper low slowly edges eastward over the
southern plains keeping us under warm ridge, although could
start see mid/upper level moisture working in from the
southwest. High pressure nosing in from the northeast may keep
it cooler, so kept highs in the 60s.

Friday, the upper low pushes northeast toward the midwest with
strong high situated over the mid atlantic coast. Will start
seeing warm advection precip arriving late Thursday night with
front not moving into the area until later Friday. By then
dynamics weaken over the north.

Aviation /20z Friday through Wednesday/
As of 140 pm edt Friday...

high pressure along the mid-atlantic coast will continue to
push offshore today allowing winds to come around to the south
and southwest. A barrier jet is situated over the piedmont (lyh-
dan) this afternoon and will result in breezy and gusty winds
(15-20g25kt) into this evening. Extensive mid and high clouds
this morning are becoming scattered as temperatures warm and
mixing increases.

The southerly winds will allow low level moisture to increase
resulting in increased potential for MVFR ceilings
overnight/early Saturday along and south of the va/nc border.

Otherwise, ceilings should remainVFR for most areas through the
taf period. Some patchy valley fog is possible overnight but
confidence is low.

Extended aviation discussion...

moisture continues to increase over the weekend ahead of an
upper-level low pressure area moving northeast from the southern
plains. Precipitation is not expected until Sunday when sub-vfr
conditions become more of a possibility. Otherwise looking at
overallVFR to start the weekend with most lower CIGS remaining
west of the area until later Sunday at this point. Periods of
unsettled weather will continue into the first half of next week
as a series of upper-level lows track from west to east across
the u.S.

Rnk watches/warnings/advisories
Va... None.

Nc... None.

Wv... None.

Synopsis... Rcs
near term... Rcs
short term... Wp
long term... Wp
aviation... Rcs


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lewisburg / Greenbrier, WV18 mi69 minSSW 12 G 1610.00 miFair69°F45°F43%1024.4 hPa

Wind History from LWB (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW9SW11
G15
SW10
G17
1 day agoN5N8CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW6SW3CalmSW7
2 days agoW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW4NW7
G16
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G18
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N8
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N12NW8
G20
N12
G15

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 Blacksburg, VA (18,4,5,8)
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Ground Weather Radar Station Blacksburg, VA
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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.