Friday, April20, 2018 L-36.com


Marine Weather and Tides
Raleigh, NC

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:32AMSunset 7:53PM Friday April 20, 2018 4:30 PM EDT (20:30 UTC) Moonrise 9:19AMMoonset 11:56PM Illumination 29% Phase: Waxing Crescent; Moon at 5 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 201910
afdrah
area forecast discussion
national weather service raleigh nc
310 pm edt Fri apr 20 2018

Synopsis
Cool high pressure will extend across southern virginia and the
carolinas through Saturday, then drift offshore Saturday night. An
area of low pressure will approach from the west Sunday, and affect
our region early next week.

Near term through tonight
As of 310 pm edt Friday...

tranquil, though unseasonably cool, weather pattern expected across
central nc through the weekend.

Tonight, a parent high positioned over the great lakes will extend
southeast into central nc tonight. This presence of the sfc feature
should cause sfc winds to decouple around sunset. The dry, cool air
mass associated with the high will permit temperatures to cool
quickly this evening, dropping into the mid-upper 40s prior to
midnight. Overnight temperatures in the mid-upper 30s will be
common. Anticipate pockets of light frost overnight though expect
coverage occurrence to be limited due to the bone dry air mass in
place. Thus do not plan to issue an advisory at this time and make a
brief mention in the hwo product.

Short term Saturday through Sunday
As of 310 pm edt Friday...

Saturday through Sunday, sfc ridge will drift slowly east and lie
just offshore by Saturday evening where it is forecast to stall
through Sunday. This feature becoming stationary a result of
confluent flow at 500mb over southern new england aiding to anchor
the parent sfc high over that region.

This stalled sfc high ridge will aid to block slow the eastward
translation of moisture ahead of a deep upper level low projected to
move from the southern plains into the lower ms valley. With the
better moisture return expected to our south-southwest through
Sunday, anticipating dry and seasonably cool conditions to persist
across central nc through Sunday afternoon. Expect abundant sunshine
Saturday, with a notable increase in high level cloudiness Saturday
night into Sunday. The mid-high clouds Saturday night will be
attributed to a minor disturbance passing across va while the high
clouds Sunday will be more closely tied to the upper level well to
our southwest.

Temperatures through the period will remain seasonably cool for late
april. Highs Saturday should average in the mid-upper 60s, about 3
degrees warmer than highs expected this afternoon. Comparable
temperatures expected Sunday as the thickening high clouds will
deter warming, especially in the afternoon. If thicker clouds are
slow to arrive, potential for high temperatures Sunday to be a
couple of degrees warmer forecast.

Long term Sunday night through Friday
As of 245 pm edt Friday...

Unsettled weather for the first half of next week...

upper low over the deep south Monday morning will begin to gain some
latitude Monday night and Tuesday, lifting slowly nne into the
southern appalachians before eventually becoming absorbed by
the kicker shortwave trough diving east southeast through the
central and eastern us. Owing to the slow movement of the upper low
across the region, along with early depictions of a very strong
atlantic maritime feed into the area, central nc has the potential to
see a widespread soaking of 1 to 2 inches, with localized higher
amounts possible, across central nc Monday through Tuesday night.

With area rivers and creeks running high from recent heavy rainfall
over the past week, this additional rainfall may be enough to
result in some localized minor flooding. Meanwhile, the severe
threat at this time,appears to be low with much of the forecast
area expected to stay in the cool stable low-level nely flow,
north northwest of the surface low as it tracks along the coast.

If future model runs trend farther inland westward with the track of
the low, there will be a greater convective threat across
eastern southeastern portions of the forecast area.

Rain chances should decrease on Wednesday, but the approach of the
aforementioned shortwave trough into the eastern us, followed by yet
another shortwave trough dropping southeast into the region will
support scattered showers through Thursday.

Insitu cad in place east of the mountains, along with widespread rain
and extensive cloud cover will hold temperatures down into 60s Monday
and Tuesday, with it definitely plausible that highs Tuesday
across the the heart of the damming region across the NW piedmont,
could struggle to climb out of 50s. Although rain chances should
decrease significantly on Wednesday, without a well-defined
mechanism to erode the lingering low-level wedge low clouds,
temperatures could be slow to recover moderate through the remainder
of the work week.

Aviation 18z Friday through Wednesday
As of 120 pm Friday...

there is high confidence thatVFR conditions will occur across
central nc through Sunday afternoon. Sfc winds will gradually veer
through the period from north northeast this afternoon, easterly
Saturday afternoon, to southeast by Sunday afternoon. Wind speeds
will be less than 9kts through Sunday morning, with a slight uptick
by Sunday afternoon across the southern counties to around 1 0kts
and gusts 15-16kts.

An approaching low pressure system early next week will increase the
threat for subVFR ceilings and MVFR ifr visibilities due to rain
and or fog persist across central nc. The threat for adverse
aviation conditions appears greatest from late Monday through
Wednesday.

Rah watches warnings advisories
None.

Synopsis... Wss
near term... Wss
short term... Wss
long term... Cbl
aviation... Wss


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Raleigh / Durham, Raleigh-Durham International Airport, NC10 mi39 minVar 510.00 miFair63°F28°F27%1025.6 hPa
Smithfield, Johnston County Airport, NC22 mi45 minN 710.00 miFair63°F26°F25%1025.7 hPa
Franklin County Airport, NC23 mi35 minN 510.00 miFair61°F26°F27%1026.1 hPa

Wind History from RDU (wind in knots)
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Last 24hrNW11
G25
NW10
G22
N12
G24
N11
G16
65N735N5CalmCalmCalmCalmCalmCalm4N754NW9CalmN85
1 day agoSW18
G24
SW12
G22
SW12SW9S7SW18
G23
SW15
G22
SW15SW13SW13W11SW11
G18
SW8SW11SW10SW10W8W8
G16
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N9W11
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W11
G21
NW11
G26
NW15
G26
2 days agoW15
G27
W13
G27
SW12
G22
SW6SW6SW7SW6SW5SW4CalmN3NE5NE5NE5NE5E6E4CalmS4SW7SW4SW9SW13
G18
SW14

Tide / Current Tables for Bannermans Branch, Northeast River, North Carolina
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Bannermans Branch
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Fri -- 02:01 AM EDT     0.01 feet Low Tide
Fri -- 06:33 AM EDT     Sunrise
Fri -- 07:01 AM EDT     1.63 feet High Tide
Fri -- 10:18 AM EDT     Moonrise
Fri -- 02:55 PM EDT     0.03 feet Low Tide
Fri -- 07:46 PM EDT     Sunset
Fri -- 07:51 PM EDT     1.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.100.20.61.21.51.61.61.41.10.80.60.40.100.20.71.11.31.31.31.10.8

Tide / Current Tables for
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Weather Map and Satellite Images
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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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Raleigh, NC (16,3,4,5)
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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.