Tuesday, December18, 2018 L-36.com


Marine Weather and Tides
Middleburg, NC

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:18AMSunset 5:02PM Tuesday December 18, 2018 2:44 PM EST (19:44 UTC) Moonrise 2:18PMMoonset 2:38AM Illumination 86% 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Middleburg, NC
   Hourly   EDIT   Help
location: 36.52, -78.34     debug


Area Discussion for - Raleigh, NC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 krah 181942
afdrah
area forecast discussion
national weather service raleigh nc
242 pm est Tue dec 18 2018

Synopsis
High pressure will build over the eastern united states through
Wednesday. A strong storm system will move slowly east through the
central and eastern united states Thursday through Friday night,
bringing unsettled conditions to our area. This storm system will
move off the east coast early Saturday, then high pressure will
build over the region Saturday through Sunday.

Near term today through tonight
As of 950 am Tuesday...

little to changes needed to the forecast this morning, with only
minor tweaks added to match in-situ observations. Will be primarily
a temperature wind forecast challenge today and tonight with high
pressure in control. -jjm
previous valid discussion...

another quiet day ahead. The mid level low over quebec new england
will kick further ene today, allowing the mid level shortwave ridge
extending from N fl NW into the midwest to shift over the carolinas,
corresponding to the surface high drifting from the great lakes to
the mid atlantic region. Expect only a few high thin clouds at most
within a sinking and low-pw air mass. Thicknesses are likely to be
near normal or perhaps slightly below in the ne, favoring highs from
around 50 NE to the mid 50s sw.

The mid level shortwave ridge will gradually dampen as it moves
overhead and to our E this evening tonight, while the surface high
holds over the mid atlantic coast. Skies should become fair tonight
as a deamplifying wave now moving into ar moves into the carolinas,
bringing increasing high clouds. Expect lows near to slightly below
normal given the thin nature of any clouds and the weak to calm
surface winds. Lows 28-33. -gih

Short term Wednesday and Wednesday night
As of 300 am Tuesday...

during this period we'll begin to see the influence of a
strengthening mid level trough traversing the central conus. The
southern stream low now deepening over the az nm state line will
cross tx la through Wed night, and the injection of energy from the
faster northern stream will result in a deep, full-latitude trough,
located just W of the miss valley by daybreak thu. Tonight's
aforementioned weakening minor wave will shift NE of central nc
early wed, but another perturbation will eject out of the southern
stream low and track NE over the E carolinas Wed night, at the same
time as the surface high shifts off the coast, inducing a moist low
level flow from the E and SE along with coastal inverted trough
formation. All of this will result in increasing cloudiness from the
s over central nc Wed afternoon into Wed night, along with a risk of
a few sprinkles or showers over SE then E sections Wed evening and
overnight as moist isentropic upglide strengthens and deepens
through the 285k-295k depth. Expect a trend to overcast skies late
wed night. Highs Wed should be 51-58 with near to slightly above
normal thicknesses. The increase in clouds will keep temps up wed
night, yielding lows of 38-47, warmest se. -gih

Long term Thursday through Tuesday
As of 240 pm Tuesday...

forecast remains on track regarding the rainfall event moving into
and through the carolinas Thursday and Friday.

Thursday and Friday: a highly amplified upper level trough over the
midwest will progress eastward through Friday, with strong southerly
flow ahead of the system advecting warm, moist air into the gulf
coast and southeast us. The surface pattern appears similar to the
last event, where the primary low remains over the southern
appalachians while two secondary lows swing through the carolinas.

The surface lows all merge together over the mid-atlantic and
northeast us on Friday before lifting away from the area. As with
the last event, expect rain to move in from the south, heaviest
Thursday evening through Friday morning. Some wrap around showers
are likely on Friday as the upper level wave swings through the
carolinas and virginias. For now, timing and track are not certain
enough to put any thunder in the forecast just yet. Rainfall
amounts will probably be in the 1 to 2 inch range, with higher
amounts farther east. Temperatures will be quite mild, with highs in
the low 50s NW to mid 60s SE Thursday and Friday and lows Thursday
night int he mid 40s NW to mid 50s se. Depending on the timing of
the system exiting the area, the frontal passage and advection of
cooler air from the nw, lows Friday night are more uncertain. For
now expect lows in the mid 30s NW to low 40s se.

Saturday through Tuesday: high pressure will build into the
carolinas in the wake of the exiting system front. Expect this part
of the forecast to be dry and seasonable with near normal
temperatures and generally clear skies.

Aviation 17z Tuesday through Saturday
As of 1140 am Tuesday...

vfr conditions are expected to persist across central nc for at
least the next 24 hours as high pressure remains dominant. Winds
will veer from northerly to more easterly Tuesday afternoon before
diminishing this evening.

Looking beyond 18z wed:VFR conditions will hold through Wed morning
as surface high pressure settles over the region. As this high moves
east and off the mid atlantic coast on wed, the onshore-directed low
level flow from the SE will bring a w-to-e trend to MVFR then
ifr lifr CIGS Wed afternoon and night. Increasing moisture and a
deep upper trough approaching from the west will bring high rain
chances, poor aviation conditions, and strong shifting winds thu
through fri. Improvement is expected Fri night withVFR conditions
ruling Sat as the storm system moves off the coast and high pressure
builds into the area. -gih

Rah watches warnings advisories
None.

Synopsis... Hartfield
near term... Jjm hartfield
short term... Hartfield
long term... Kc
aviation... Jjm hartfield


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Henderson-Oxford Airport, NC15 mi60 minN 010.00 miFair47°F26°F45%1020.3 hPa
South Hill, Mecklenburg-Brunswick Regional Airport, VA19 mi70 minN 010.00 miFair47°F29°F50%1022.7 hPa

Wind History from HNZ (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
-12
PM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrW7W5W3W3W5W3SW3W3SW5W4NW4W3NW5NW8N5CalmCalmN3CalmNE5E3CalmCalmCalm
1 day agoW8W3W4SW3W4W5W3NW4W3W3SW5W3SW6W3SW4SW4W4CalmCalmW12
G17
W10
G16
NW6
G14
NW10
G15
W9
G14
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW6W6W6

Tide / Current Tables for Petersburg, Appomattox River, James River, Virginia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Petersburg
Click for Map
Tue -- 02:35 AM EST     Moonset
Tue -- 06:32 AM EST     -0.08 feet Low Tide
Tue -- 07:18 AM EST     Sunrise
Tue -- 12:05 PM EST     2.83 feet High Tide
Tue -- 02:13 PM EST     Moonrise
Tue -- 04:54 PM EST     Sunset
Tue -- 07:33 PM EST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.52.31.81.20.60.2-0-0.10.31.122.62.82.72.31.71.10.60.30.10.10.51.42.1

Tide / Current Tables for Chester, James River, Virginia
   EDIT      (on/off)   Help   One Week of Data
Chester
Click for Map
Tue -- 02:35 AM EST     Moonset
Tue -- 06:33 AM EST     -0.06 feet Low Tide
Tue -- 07:18 AM EST     Sunrise
Tue -- 12:18 PM EST     2.75 feet High Tide
Tue -- 02:13 PM EST     Moonrise
Tue -- 04:53 PM EST     Sunset
Tue -- 07:34 PM EST     0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.52.31.91.30.70.2-0-00.311.92.52.72.72.31.81.20.70.30.10.10.51.22

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES 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 Raleigh, NC (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Raleigh/Durham, NC
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.