Tuesday, September26, 2017 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 7:06AMSunset 7:06PM Tuesday September 26, 2017 8:43 AM EDT (12:43 UTC) Moonrise 12:00PMMoonset 10:26PM Illumination 33% Phase: Waxing Crescent; Moon at 6 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 261147
area forecast discussion
national weather service raleigh nc
747 am edt Tue sep 26 2017

A narrow ridge of high pressure will remain centered over the
appalachians through wed, while hurricane maria tracks northward,
offshore the coast of the carolinas. Meanwhile, a dry cold front
will approach from the northwest, then cross nc late Thu and thu

Near term through tonight
As of 340 am Tuesday...

a mid level ridge now centered over the NRN middle atlantic states,
and underlying surface ridge extending from new england swwd along
the appalachians, will both weaken during the next 24 hours, as
height falls aloft from hurricane maria and a shortwave trough
lifting across the NRN plains both converge upon the ridge. This
development will ultimately cause maria to turn ewd and away from
the nc va coast later Wed and Wed night. Until that time, however,
the msl pressure gradient between maria and the (weakening) ridge
will result in both the continued wwd expansion of a low overcast
this morning, and the development of breezy conditions with diurnal
heating over the ERN half of the forecast area (from the ern
piedmont and sandhills to the coastal plain). Resultant partly sunny
conditions over the WRN piedmont, to mostly cloudy ones over the
coastal plain, will result in an atypical temperature distribution
characterized by middle to upper 80s west to upper 70s to lower 80s

Initially partly to mostly clear skies this evening will become
cloudy or mostly so over portions of the coastal plain and ne
piedmont, as moist nely flow will favor the wwd expansion of low
overcast there once again overnight. Lows will range from the middle
60s to lower 70s, mildest east owing to both the aforementioned low
clouds and a continued nly breeze.

Short term Wednesday and Wednesday night
As of 355 am Tuesday...

based on the official NHC forecast track, by-then tropical storm
maria will be ~150 nm east of hse by 12z wed, after which time a
turn to the east and an increase in forward speed will occur. The
low level flow will consequently back to a (drier) nwly to nnwly
direction and result in partly to mostly sunny conditions on wed.

Projected low level thickness values around 1425 meters at gso will
favor well above average temperatures in the upper 80s to lower 90s.

Lows in the 60s.

Long term Thursday through Monday
As of 325 am Tuesday...

Thursday will be our final unseasonably warm day as maria
accelerates eastward and a dry cold front pushes south down the
atlantic coast. Highs Thursday will reach the mid and upper 80s,
with some lower 90s possible along the southern tier of central nc.

Strong cold air advection will be getting underway Thursday night as
high pressure builds east across the mid atlantic. This high
pressure will then surge south down the atlantic seaboard over the
weekend, with highs falling to mostly upper 70s on Friday, and even
further to mostly the mid to upper 70s though Monday. Mins will
similarly fall from 60 to 65 Friday morning to the low and mid 50s
Saturday through Monday.

.Aviation 12z Tuesday through Saturday
as of 745 am Tuesday...

a shield of ifr-MVFR ceilings, in moist nely low level flow on the
nwrn periphery of hurricane maria, will lift and scatter toVFR by
this afternoon, though they may persist in the 2000-3000 ft range
all day at rwi. The low clouds will then edge wwd once again
tonight, in a similar fashion as right now, though they will likely
not make it much farther wwd than rwi (to perhaps near or just east
of rdu) at that time. It will also become breezy with diurnal
heating today, mainly at rwi fay rdu, owing to the msl pressure
gradient between maria and high pressure centered over the
appalachians. Lastly, an isolated shower will be possible this
afternoon, mainly at rwi.

Outlook: any lingering ifr-MVFR ceilings Wed morning at ERN taf
sites will quickly lift and scatter toVFR, as maria accelerates ewd
and loses influence (ie. The flow will assume a drier nwly
component), with a subsequent long stretch of mainlyVFR conditions
for the next several days.

Record high temperatures across central nc for september 27 and

Record MAX (9 27) record MAX (9 28)
rdu 94 1998 95 1998
gso 90 2007 92 1939
fay 94 1986 95 1933

Rah watches warnings advisories

Synopsis... Mws
near term... Mws
short term... Mws
long term... Mlm
aviation... 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 mi52 minVar 310.00 miOvercast69°F68°F96%1013.5 hPa
Sanford, Sanford-Lee County Regional Airport, NC17 mi58 minNNW 510.00 miOvercast69°F65°F88%1013.5 hPa
Chapel Hill, Williams Airport, NC18 mi47 minVar 310.00 miOvercast69°F66°F93%1013.8 hPa

Wind History from RDU (wind in knots)
1 day agoN3N4NE6NE8NE9NE9NE9NE11NE10NE6E7NE5E3NE4E5NE5CalmNE4CalmCalmCalmNE7NE5NE5
2 days ago--N3N4NE5NE7E9N12

Tide / Current Tables for Bannermans Branch, Northeast River, North Carolina
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Bannermans Branch
Click for Map
Tue -- 03:03 AM EDT     0.21 feet Low Tide
Tue -- 07:02 AM EDT     Sunrise
Tue -- 08:24 AM EDT     1.32 feet High Tide
Tue -- 12:52 PM EDT     Moonrise
Tue -- 03:06 PM EDT     0.16 feet Low Tide
Tue -- 07:01 PM EDT     Sunset
Tue -- 09:01 PM EDT     1.41 feet High Tide
Tue -- 11:24 PM EDT     Moonset
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 (8,2,3,4)
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Ground Weather Radar Station Raleigh/Durham, NC
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weather_mapweather_map weather_map

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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 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.