Sunday, March26, 2017

Marine Weather and Tides
Briarcliffe Acres, SC

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:08AMSunset 7:33PM Sunday March 26, 2017 12:58 PM EDT (16:58 UTC) Moonrise 5:21AMMoonset 5:11PM Illumination 1% Phase: Waning Crescent; Moon at 29 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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AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 838 Am Edt Sun Mar 26 2017
Today..SE winds 10 kt. Seas 3 ft.
Tonight..SE winds 10 kt. Seas 3 ft.
Mon..S winds 10 kt. Seas 3 ft.
Mon night..S winds 10 kt. Seas 3 ft. A slight chance of showers and tstms.
Tue..SW winds 10 kt...increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. A chance of showers.
Tue night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft...subsiding to 2 to 4 ft after midnight.
Wed..W winds 10 kt...becoming se. Seas 2 to 3 ft.
Thu..E winds 10 to 15 kt. Seas 2 to 4 ft...building to 3 to 4 ft. A chance of showers and tstms through the night. Winds and seas higher in and near tstms.
AMZ200 838 Am Edt Sun Mar 26 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Southeast to south flow around atlantic high pressure will continue through Mon. A weak cold front will approach the waters Tue...and track across the area waters and offshore during Wed. High pressure will follow and build across the area from the north Wed night into Thu. Another cold front will move across the waters on Fri.

7 Day Forecast for Marine Location Near Briarcliffe Acres, SC
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location: 33.77, -78.82     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 261310
area forecast discussion
national weather service wilmington nc
910 am edt Sun mar 26 2017

Above normal temperatures will prevail much of the upcoming
week as high pressure offshore brings southerly winds. A series
of low pressure systems will bring a chance of rain Monday into
Tuesday, and again late next week. A cooling trend is expected
into next weekend.

Near term /through tonight/
As of 910 am Sunday... Rally enjoying looking at the high
resolution loop of the new goesr satellite images, which show
thin streamers of cirrus overlaying a scattered to broken area
of strato-cu. Have not seen need to alter forecast for today.

Still expecting partly to mostly cloudy skies, nearly no chance
of showers and pleasantly warm temperatures in the 70s. Previous
discussion from this morning follows:
much the same as previous day as an expansive area of strato cu
remains over off shore waters and plenty of cirrus streaming
over the carolinas in SW flow aloft. The SE return flow around
the ridge of high pressure over the atlantic will push some of
these clouds on shore through the day and should see any stray
showers stay mainly over the waters. There may be some patchy
fog around just around sunrise. The cloud cover along with
plenty of WAA have helped to keep overnight temps close to 60.

This will give a jump start to warm day ahead. The WAA will
battle the cloud cover allowing temps to reach into the mid to
upper 70s this aftn.

Low pressure tracking up the mississippi valley will increase
the chc of pcp into the mountains and although this will not
directly affect our area, there will be increased moisture
advection in SW flow aloft. Pcp water values near .65 inches
will increase over an inch through late Sun aftn. This may help
to trigger some showers over the central carolinas and may see a
stray shower reach farther east... Mainly west of i-95 late
Sunday, as well as increasing mid level clouds.

Short term /Monday through Tuesday night/
As of 4 am Sunday... Chief headline this period "warm and balmy"
and an offering of the best rain chances until late in the
week, in particular on Tuesday as a short-wave whisks overhead.

Dryish mid-level air will limit rainfall amounts and QPF output
far from stellar. The low-level heating and dewpoint fields
will continue to warrant a slight chance of a TSTM however, and
a few lucky folks may see higher local rainfall dumps from
convection. Pronounced drying in the mid-levels in wake of the
cold frontal passage late Tuesday night will curtail showers by
daybreak Wednesday, but no cold air follows the front.

Long term /Wednesday through Saturday/
As of 4 am Sunday... Brief high pressure intrusion via a back-
door cold front will bring a slightly cooler day on Thursday
with a lag of cooler air on Wednesday in wake of a frontal
crossing of the coast. Thursday morning lows may end up being
the coolest portion of the week, before warm air advection
cranks up again by Thursday night ahead of a potent southern
stream impulse. This system will offer the best rain chance of
late, and potentially a good soaking. Right now the amplified
nature of the shot-wave suggest a few strong to severe storms
cannot be ruled out late Thursday night into Friday. A few
showers may linger into Saturday beneath the cold pool of the
amplified trough, with drying and cooling through the day with
a cool morning lows in the 40s Sunday.

Aviation /13z Sunday through Thursday/
As of 1030z...VFR conditions this TAF cycle in mild and moist
weak southerly wind flow. Winds will generally be SE to S up to
12 kts in the afternoon, otherwise 7 kts or less. An expansive
cumulus field just offshore may get guided onshore in sse flow
and therefore did include a period of sct-bkn btwn 3-5 kft at
coastal terminals. Heating will produce some cumulus at inland
taf sites this afternoon. The mid levels will continue dry but
sw flow in the mid to upper levels will continue to feed cirrus
over the area. A few shra possible late inland, but not enough
in areal coverage to warrant inclusion in the tafs as of yet.

Extended outlook... Flight category restrictions are possible in a
few bouts of showers and thunderstorms late Mon through Tue and
again thurs night. ExpectVFR conditions after cold front moves
through on Wed lasting into thurs.

Near term /through tonight/...

as of 910 am Sunday... Latest obs continue to show a light S to
se flow with seas of around 3 ft. Forecast in good shape with no
updates needed. Previous discussion follows:
southeasterly return flow will continue around atlantic high
through the period. Winds will fluctuate slightly from SE to s
remaining 10 kts or less. Winds near shore Sunday afternoon will
be a little bit higher, in the 10 to 15 kt range, and gustier
as the afternoon sea breeze circulation sets up. The persistent
southerly flow will push seas gradually but overall will remain
in the 2 to 4 ft range. Seas will remain right around the 3 ft
range through the period.

Short term /Monday through Tuesday night/...

as of 4 am Sunday... No advisories expected this period, but se
swell waves will keep sea heights relatively elevated given the
15 kt or less wind- speeds. Wave periods of around 10 seconds
will prevent steepness, and this will be co-joined by light to
moderate s-sw chop this period. A cold front will cross the
waters late Tuesday night accompanied by showers and isolated
tstms. Patchy marine fog or mist is possible on Tuesday. A
hearty sea breeze will produce gusts to 19 kt near shore in the
afternoons. Both mon/tue s-sw winds 15 kt or less sustained.

Long term /Wednesday through Friday/...

as of 4 am Sunday... Light winds Wednesday in wake of a cold
front can be expected, followed by a wind-shift to the n_ne
Wednesday night as a back door cold front pushes across the 0-20
nm waters. Briefly this intrusion will transition to light wind
as the high moves overhead Thursday afternoon. A strong and
progressive southern system will bring increasing se-s winds
late Thursday and an advisory may very well be needed for 25 kt
gusts late Thursday night ahead of its cold front. Strong storms
and numerous showers appear likely on the water Friday.

Ilm watches/warnings/advisories
Sc... None.

Nc... None.

Marine... None.

Synopsis... Mjc
near term... Rek/rgz
short term... Mjc
long term... Mjc
aviation... Mjc/rek
marine... Mjc/rek/rgz

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 9 mi41 min 1023.5 hPa
SSBN7 19 mi89 min 2 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 35 mi74 min SSE 8 72°F 1024 hPa55°F
41108 43 mi42 min 59°F3 ft

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
North Myrtle Beach Grand Strand Airport, SC6 mi66 minESE 610.00 miMostly Cloudy71°F57°F61%1024 hPa
Myrtle Beach Air Force Base, SC8 mi74 minSSE 810.00 miMostly Cloudy73°F53°F50%1024 hPa
Conway Horry County Airport, SC17 mi64 minSSE 10 G 147.00 miOvercast75°F50°F41%1023.7 hPa

Wind History from CRE (wind in knots)
Last 24hrS8S8S8S6S8S7S6SE4SE5CalmSE3SE3CalmSE5S7S3CalmCalmNE3CalmSE3SE6SE5SE6
1 day agoSE7SE7SE8S7SE6SE5SE4SE6SE6S5S5S5S4S5CalmCalmCalmCalmCalmCalmCalmS4SW7SE5
2 days agoE14

Tide / Current Tables for North Myrtle Beach, South Carolina
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North Myrtle Beach
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Sun -- 04:21 AM EDT     -0.20 feet Low Tide
Sun -- 06:20 AM EDT     Moonrise
Sun -- 07:10 AM EDT     Sunrise
Sun -- 09:43 AM EDT     2.06 feet High Tide
Sun -- 04:50 PM EDT     -0.35 feet Low Tide
Sun -- 06:10 PM EDT     Moonset
Sun -- 07:31 PM EDT     Sunset
Sun -- 09:55 PM EDT     2.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Myrtle Beach Airport, South Carolina
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Myrtle Beach Airport
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Sun -- 02:56 AM EDT     -0.20 feet Low Tide
Sun -- 06:20 AM EDT     Moonrise
Sun -- 07:10 AM EDT     Sunrise
Sun -- 08:37 AM EDT     3.21 feet High Tide
Sun -- 03:25 PM EDT     -0.35 feet Low Tide
Sun -- 06:09 PM EDT     Moonset
Sun -- 07:31 PM EDT     Sunset
Sun -- 08:49 PM EDT     3.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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 Wilmington, NC (12,3,4,5)
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Ground Weather Radar Station Wilmington, 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 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.