Monday, December11, 2017

Marine Weather and Tides
Raleigh, NC

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 7:13AMSunset 5:02PM Monday December 11, 2017 5:35 PM EST (22:35 UTC) Moonrise 12:53AMMoonset 1:26PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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 Raleigh, NC
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location: 35.79, -78.64     debug

Area Discussion for - Raleigh, NC
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Fxus62 krah 112003
area forecast discussion
national weather service raleigh nc
302 pm est Mon dec 11 2017

High pressure will move east tonight. A strong upper level
disturbance and associated cold front will move east across the mid-
atlantic region Tuesday. Much colder conditions will follow for mid
to late week.

Near term tonight
As of 300 pm Monday...

as the strong mid upper level trough approaches from the NW tonight,
it will be milder as high cloudiness and even a southwesterly flow
increase. Lows may occur late evening or around midnight in the west
where mixing and the SW flow will affect temperatures later. Lows
should range in the upper 20s to lower 30s NE ranging into the mid
30s over the western piedmont. Temperatures in the western piedmont
may rise a few degrees toward daybreak with a SW flow at 10 mph.

Short term Tuesday and Tuesday night
As of 300 pm Monday...

Gusty NW winds to 25-30 mph with wind chills in the 10-15
degree range Tuesday evening...

the main cold front and upper level feature will move across central
nc between 12z and 18z. This is when the mid and high level moisture
will increase enough for variably cloudy skies. Once the cold front
passes, winds will shift to the wsw and increase to 15-20 mph with
gusts to 30 mph. CAA will be delayed a few hours behind the front
due to the strong westerly downslope component. Guidance is robust
in warming temperatures well into the mid 50s to lower 60s in the
east, with highs 50-55 nw.

Expect a very sharp drop in the temperatures late Tuesday and
Tuesday evening with strong cold dry air advection. Readings will
slip below freezing within a few hours of sunset in the triad, and
by late evening in the triangle. Mainly clear skies and diminishing
winds are expected late Tuesday night. Lows will be in the lower to
mid 20s. Wind chill readings of 10-15 are likely from mid evening
through the early morning hours.

Long term Wednesday through Monday
As of 230 pm Monday...

cold air will be advecting into central nc in northwest flow on
Wednesday in the wake of the dry cold frontal passage. Despite full
sun, highs will be capped in the mid 30s north to low 40s south.

Overnight lows in the mid to upper 20s. Meanwhile, a shortwave will
begin diving south-southeastward from central canada, through the
high plains and toward the mid-atlantic. The resultant upper level
winds will become briefly more westerly then southwesterly on
Wednesday night. A reflection of this wave will be seen at the
surface as a low moving through the oh valley region, eastward to
the atlantic. The winds will become more southwesterly at the
surface late Wednesday Wednesday night ahead of the aforementioned
low and its attendant cold front. This cold front, which won't be as
potent as the previous one, will stall over central nc Thursday into
Friday. A low strengthening along the stalled front over the area
will result in an increase in temperature gradient from WV to sc on
Friday. Persistent west-southwesterly flow into the region will
result in increased warm, moist air advecting into the carolinas and
thus an increase in precipitation potential, mainly along and ahead
of the front. The front should finally move eastward over the
atlantic late Friday into Saturday, allowing cold air to advect into
the area from the northwest as high pressure migrates eastward along
the gulf coast, ridging into the carolinas. Another frontal system
develops in the midwest Saturday Sunday, approaching the mid-
atlantic Sunday Monday. Medium range models are in fairly good
agreement for being so far out in time, so this may be a system of
focus for the next week or so. Highs through Saturday will generally
range from mid 40s to mid 50s, while lows will fluctuate between low
to mid 30s and mid to upper 20s. Ahead of the next frontal system,
temperatures will likely moderate, highs the mid 50s and lows into
the mid

Aviation 18z Monday through Friday
As of 1245 pm Monday...

vfr conditions under high pressure will dominate through this
afternoon and tonight. SW winds will increase tonight as the
pressure gradient increases out ahead of the approaching front. This
will lead to 8-12kt winds later tonight that mix to the surface.

Some concern about SW winds 35-40kt aloft late tonight (2000-2500
agl), but mixing should lead to 10kt wind at the surface precluding
low level wind shear. We will continue to monitor.

The cold front will move through dry on Tuesday. Winds will shift
from SW to wnw and increase to 15-20kt after 18z, gusts to 28kt.

Gusty winds will diminish Tuesday night after 09z.

Looking beyond Tuesday night:VFR conditions will dominate through
at least Thu night and possibly Friday.

Rah watches warnings advisories

Synopsis... Badgett
near term... Badgett
short term... Badgett
long term... Kc
aviation... Badgett

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Raleigh / Durham, Raleigh-Durham International Airport, NC10 mi44 minS 610.00 miFair50°F28°F44%1016.2 hPa
Smithfield, Johnston County Airport, NC22 mi40 minN 010.00 miFair50°F32°F50%1016.6 hPa
Franklin County Airport, NC23 mi55 minN 010.00 miFair46°F30°F53%1016.6 hPa

Wind History from RDU (wind in knots)
Last 24hrCalmCalmCalmSW5SW4SW5SW5W4SW4SW4SW3CalmCalmSW4W4SW3S4CalmNW5--4SW5SW6S6
1 day agoSW4SW6W6W7W3SW5SW4W5W5W7W5W4W5W5W34W8W11
2 days agoNE73NE8NE4NE4N5N6N5N4NE7NE6N6N7N6N5N4N7NE8N844N3CalmW4

Tide / Current Tables for Bannermans Branch, Northeast River, North Carolina
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Bannermans Branch
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Mon -- 12:49 AM EST     Moonrise
Mon -- 04:27 AM EST     -0.04 feet Low Tide
Mon -- 07:08 AM EST     Sunrise
Mon -- 10:04 AM EST     1.31 feet High Tide
Mon -- 01:22 PM EST     Moonset
Mon -- 04:45 PM EST     -0.01 feet Low Tide
Mon -- 05:00 PM EST     Sunset
Mon -- 10:22 PM EST     1.32 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Mid-Atlantic    EDIT

Wind Forecast for Raleigh, NC (17,4,5,8)
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Ground Weather Radar Station Raleigh/Durham, NC
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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 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 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.