Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Apex, 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 6:49AMSunset 6:07PM Saturday February 24, 2018 3:04 AM EST (08:04 UTC) Moonrise 12:35PMMoonset 2:04AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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 Apex, NC
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location: 35.74, -78.86     debug


Area Discussion for - Raleigh, NC
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Fxus62 krah 240547
afdrah
area forecast discussion
national weather service raleigh nc
1250 am est Sat feb 24 2018

Synopsis
A strong sub-tropical ridge aloft situated off the southeast u.S.

Coast will weaken while drifting south toward the bahamas through
Saturday. Meanwhile, a quasi-stationary front will remain over
central nc through tonight, then retreat northward while dissipating
on Saturday.

Near term through tonight
As of 950 pm Friday...

just minor tweaks to the hourly temperatures required to the near
term forecast.

00z Saturday upper air analysis definitely depicts a weaker sub
tropical ridge over the SE u.S. As heights are 20-40m lower compared
to 12 hours ago. With a weaker high in vicinity, expect our stretch
of unseasonably warm conditions to come to an end though
temperatures tonight into Saturday will remain very mild for late
february.

At the surface ,a weak warm front extended west-to-east across
central nc in vicinity of highway 64. This feature will continue to
drift slowly north overnight before dissipating on Saturday.

As nocturnal cooling continues, expect areas of low
clouds to develop, initially across the northern piedmont, then
towards daybreak across the south and east. The formation of the
clouds will cause temperatures to hold steady or actually rise a bit
overnight. Min temps 50-55 across the north, and middle 50s across
the south.

Short term Saturday and Saturday night
As of 340 pm Friday...

sub-tropical riding will remain centered in the vicinity or just
northeast of the bahamas, with associated surface high pressure
extending from just south of bermuda, wwd into the sern u.S. This
pattern will maintain unseasonably warm and relatively humid
conditions across cntl nc. Persistence high temperatures (relative
to the warm sector) are expected to be in the mid 70s to around 80
degrees once again, given projected low level thickness values in
the 1385-1390 meter range - very similar to wed-thu, and Fri in srn
nc. While the sub-tropical ridge will also maintain a generally warm
and capped environment to convection, small amplitude perturbations
in swly flow aloft will glance the WRN and NRN piedmont; and these
may prove supportive of a few showers in a slightly less capped
environment there. It will remain mild in steady swly flow sat
night, with low temperatures mainly in the lwr, to perhaps mid, 60s.

Long term Sunday through Friday
As of 240 pm Friday...

we remain in the warm sector for one final day Sunday with deep
southerly flow on the west side of stacked ridging offshore. Highs
Sunday will climb well into the 70s, with some very low 80s possible
in the southeast. Moisture will be on the increase in this flow
regime, and a cold front will be edging slowly east as the ridging
offshore is flattened suppressed south by a strong short wave moving
across the midwest and into the great lakes region. The surface
front is expected to stall as it reaches the area on Sunday, with a
surface wave lifting northeast up the frontal zone on Monday.

Showers will thus be increasing from the west throughout the day on
Sunday, becoming likely across all of central nc Sunday night
through most of the day Monday. Widespread rainfall totals of one
half inch are expected, but we could see one inch amounts due to
training in some areas. Monday's highs will be suppressed by rain in
addition to cool air advection, but the encroaching airmass will be
a bit warmer than seasonal, having originated in the lower midwest
and been allowed to further moderate due to slow eastward
progression.

High pressure will build into the mid atlantic briefly Tuesday
through early Wednesday, with plenty of Sun and drier conditions to
accompany seasonable temperatures in the low to mid 60s after
morning lows in the 40s. A warm front will lift north, accompanied
by increased cloud coverage and chances for showers by Wednesday
afternoon through Thursday, when our next cold front is expected to
sweep through and restart the cycle again. Highs Thursday will climb
back to the 65 to 70 range ahead of the front, with seasonable
temperatures near 60 to follow on Friday in the front's wake.

Aviation 06z Saturday through Thursday
As of 1250 am Saturday...

24-hour TAF period: a frontal boundary continues to remain stalled
across central north carolina, with kint, kgso, krwi, and krdu
remaining north of the boundary and kfay sitting just south. Biggest
difference at this hour between the north side and southside remains
dewpoints, with 60s prevalent across the sandhills southwest
piedmont counties and 50s prevalent further north. Expect this
boundary to slowly lift north overnight, allowing dewpoints to rise
and aviation conditions to deteriorate in the form of reduced vsbys.

Vfr conditions remain in place everywhere except for rwi, where br
formation has begun. Each site will likely dip to lifr overnight,
especially between 4am and 10am Saturday. Confidence of fg formation
is higher at the eastern sites vs the western sites who will see a
layer of mid to upper level clouds spill across the area. Winds will
remain light to variable, becoming predominantly southwesterly around
10mph during the day Saturday as mixing is allowed and conditions
return toVFR+ before mid day. - jjm
looking ahead: increasing winds, particularly aloft, will limit fog
potential Saturday night, except for at perhaps fay and rwi where
winds will be relatively lighter, with overnight-early morning low
stratus anticipated otherwise and elsewhere. Those strengthening
winds aloft may also result in marginal low level wind shear
conditions at piedmont sites Saturday night, given the likely
presence of a shallow, ~1000 ft inversion, which will tend to
separate a steady and even occasionally gusty ssw wind at the
surface from an abrupt increase in flow within and above the
inversion. The approach and slow passage of a frontal zone will
result in a high probability of showers, and some sub-vfr
conditions, late Sun into early next week. -mws

Climate
Rdu records:
date | high year | high min year
------------------------------------------
02 24 81 1982 58 1985
gso records:
date | high year | high min year
------------------------------------------
02 24 79 1982 55 1985
fay records:
date | high year | high min year
-------------------------------------------
02 24 83 1930 60 1975

Rah watches warnings advisories
None.

Synopsis... Mws
near term... Wss
short term... Mws
long term... Mlm
aviation... Jjm mws
climate... Rah


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Raleigh / Durham, Raleigh-Durham International Airport, NC11 mi74 minSSW 68.00 miA Few Clouds58°F57°F97%1024.9 hPa
Sanford, Sanford-Lee County Regional Airport, NC17 mi70 minN 03.00 miFog/Mist49°F49°F99%1024.7 hPa
Chapel Hill, Williams Airport, NC18 mi69 minN 02.00 miFog/Mist52°F52°F100%1024.5 hPa

Wind History from RDU (wind in knots)
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Last 24hrNE4NE4NE8E6NE5NE7NE5NE6E4CalmCalm4CalmCalmNE7NE3NE3E7SE5SE6SE6S3SW6S6
1 day agoSW7SW7SW11SW9SW9SW8SW10SW11SW12SW11SW12W13
G18
SW13SW14S10SW8S6S6S53CalmSE5SE4N3
2 days agoS7SW9SW8SW10SW6SW8SW8SW11SW16W10SW12W7SW13SW7SW5S4CalmSE4SE4S9S8S8SW8SW8

Tide / Current Tables for Bannermans Branch, Northeast River, North Carolina
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Bannermans Branch
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Sat -- 01:56 AM EST     Moonset
Sat -- 04:25 AM EST     -0.02 feet Low Tide
Sat -- 06:46 AM EST     Sunrise
Sat -- 09:39 AM EST     1.42 feet High Tide
Sat -- 12:33 PM EST     Moonrise
Sat -- 05:25 PM EST     0.07 feet Low Tide
Sat -- 06:02 PM EST     Sunset
Sat -- 10:30 PM EST     1.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.50.30.1-000.30.81.21.41.41.31.10.80.60.40.20.10.10.40.81.11.21.2

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

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Raleigh, NC (3,6,7,8)
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Ground Weather Radar Station Raleigh/Durham, NC
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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.