Tuesday, February20, 2018 L-36.com


Marine Weather and Tides
Murrells Inlet, SC

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 6:52AMSunset 6:06PM Tuesday February 20, 2018 10:43 AM EST (15:43 UTC) Moonrise 9:49AMMoonset 10:51PM Illumination 28% 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
    EDIT      (on/off)   Help
AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 909 Am Est Tue Feb 20 2018
.dense fog advisory in effect until noon est today...
Rest of today..SE winds 10 kt. Seas 2 ft. Vsby less than 1 mile in fog.
Tonight..S winds 10 kt. Seas 3 ft. Patchy fog. Vsby 1 to 3 nm.
Wed..S winds 10 kt. Seas 2 to 3 ft. A slight chance of showers. Patchy fog. Vsby 1 to 3 nm.
Wed night..S winds 10 kt. Seas 3 ft. A slight chance of showers. Patchy fog.
Thu..S winds 10 kt. Seas 3 ft. Patchy fog.
Thu night..S winds 10 kt. Seas 3 ft. Patchy fog.
Fri..S winds 10 kt. Seas 3 ft.
Sat..SW winds 10 kt, increasing to 10 to 15 kt. Seas 3 to 4 ft.
AMZ200 909 Am Est Tue Feb 20 2018
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Bermuda high pressure will remain anchored offshore, sustaining light to moderate S and sw winds through the week. Each afternoon will feature gustier winds inshore, due to the sea breeze.

7 Day Forecast for Marine Location Near Murrells Inlet, SC
   Hourly   EDIT   Help
location: 33.54, -79.1     debug


Area Discussion for - Wilmington, NC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kilm 201512
afdilm
area forecast discussion
national weather service wilmington nc
1012 am est Tue feb 20 2018

Synopsis
Strong high pressure circulating offshore, will draw warm air
into the region much of the upcoming week, before a cold front
brings a chance of rain late into next weekend. Daytime highs
will average 15 to 20 degrees above normal for late february.

Near term through tonight
As of 1012 am Tuesday... Just whittling off a few more counties
from the 'dense fog advisory', this leaves darlington and
marlboro, until noon, maybe we can drop this a bit earlier than
noon, sure is socked-in nice there now though.

As of 923 am Tuesday... The synoptic pattern sounds like a beach
boys song, surface high pressure bermuda, upper ridge bahama.

Exceptionally warm conditions to prevail as a result. Question
for today, will fog remain dense near the coast due to sea fog
intrusion, slivers can be seen, inland fog currently eroding.

Dry aloft, with odds of measurable rain < 15 %. Record highs for
today ilm 78 in 2014, flo 81 in 1997, cre 76 in 1953. The balmy
flow may result in fog again late tonight, sea and land.

Short term Wednesday through Thursday night
As of 300 am Tuesday... Bermuda high pressure will dominate the
weather across the eastern carolinas and bring well above normal
temperatures and unseasonably high humidity. A cold front will
be dropping S Thu and Thu night. This front should begin to
backdoor into north carolina Thu night, but still looks like it
will stall to our N before retreating later Fri and Fri night as
the ridge of high pressure expands.

Temps at 850 mb will peak around 15c this period and this
should,with the help of some sunshine, push high temps to
around 80 both days. The proximity to cool atlantic waters will
result in a sharp temp gradient as you near the coast. Beach
temps are not expected to exceed 70 either day. Also, patchy sea
fog should persist at the beaches and just offshore through the
period. Lows will be in the upper 50s and lower 60s.

Record highs may be challenged Wed and thu...

02 21
city high temperature forecast daily record high
wilmington 76 78 in 2014
florence 82 81 in 1997
n myrtle beach 72 76 in 1953
02 22
city high temperature forecast daily record high
wilmington 76 78 in 2003
florence 82 80 in 1990
n myrtle beach 72 75 in 2007
the risk for rainfall looks meager this period given only very
shallow moisture and persistent ridging. Did include a very
small pop for areas N of a ilm to near bbp line late Thu night
ahead of the southward progressing backdoor cold front and this
may end up being too generous.

Long term Friday through Monday
As of 300 pm Monday... Continues to look like a period of
extended warmth with potential for record breaking temperatures
this week. Bermuda high and 5h western atlantic ridge team up to
bring an extended period of warm southerly flow and mid-level
subsidence. GFS continues to slowly back away from bringing a
backdoor cold front into the area fri. Meanwhile the canadian,
ecmwf, and wpc all have the front stalling out around the nc va
border. Given the GFS is trending in this direction and mid-
level ridging tends to win out went ahead and removed any hint
of a front moving into the area fri. Next shot at rainfall
looks to be Sun night as cold front moves in from the northwest.

Front lacks a strong cold push and the ECMWF stalls it in the
region while the GFS passes it cleanly. Looking at the predicted
upper pattern would think the front stalled in the area is
probably more likely and for now will carry the Sun night chance
pop through mon. The dynamics associated with the front pass
northwest of the area and forcing Sun night would be limited,
curtailing rainfall amounts. Might have a better shot on Mon if
the front ends up stalled and shortwave activity can get
involved, but have low confidence for the start of next week at
this point.

Partial thickness and 850 temps through the end of the week
suggest highs in the upper 70s to low 80s for areas not along
the immediate coast. Southeast to south flow will lead to a
strong sea breeze that will become a modified resultant as the
winds veer to south-southwest late in the period. Onshore flow
and water temps in the mid to upper 50s will keep highs at the
beaches in the mid to upper 60s at best. Front moving into the
area Sun night Mon will drop temps a little. Even so most areas
are likely to end up close to 10 degrees above climo. Lows will
be even warmer with potential for lows 25 degrees or more above
climo.

Aviation 15z Tuesday through Saturday
As of 12z... Dense fog advisory this morning with visibilities below
a half mile in many spots. Things will improve slowly after
daybreak, withVFR conditions not expected until late morning. Warm
southerly flow will continue with well above average temperatures.

There are a few showers off this coast at this time, but think they
will only affect ilm if at all. Look for ifr conditions returning
tonight with above normal temp dpt.

Extended outlook...VFR. Morning ifr br possible Tuesday-thu. Sea
fog possible through Thu but confidence is low.

Marine
Near term through tonight ...

as of 923 am Tuesday... Marine fog advisory may need extending
but will monitor obs through late morning to guide decision.

As of 3 am Tuesday... A dense fog advisory will remain in
effect until noon today. Warm and moist southerly winds around
bermuda high will flow over the cool shelf waters producing
ideal conditions for sea fog through this morning. Expect patchy
sea fog through the afternoon and may end up with another
advisory for tonight.

Winds will be generally be light, less than 10 kt with only a
slight spike in the afternoon due to development of sea breeze.

This will maintain seas 2 to 3 ft across the waters.

Short term Wednesday through Thursday night ...

as of 300 am Tuesday... Bermuda high pressure will bring benign
winds and seas. Unseasonably warm and humid air will continue
across the waters and thus the risk for sea fog will continue.

Dewpoints will be in the lower to mid 60s while water temps will
be in the mid 50s and this will be marginally conducive for sea
fog to remain in place. The wind direction will continue to be
south which will not maximize residence time over the cool shelf
waters. Thus, will keep the coverage of sea fog patchy at this
time. Mariners should still expect that at least some of the fog
will be dense with visibility 1 nm or less.

Wind speeds will be 10 kt or less through the period, although
at the height of the seabreeze circulation each afternoon, wind
speeds across the near shore waters could briefly reach 10 to
15 kt. Seas will be 2 to 3 ft with 4 ft seas mixing in late thu
and Thu night.

Long term Friday through Saturday ...

as of 300 pm Monday... Bermuda high will maintain southerly flow
through the period. Weak backdoor front will try to drop in
from the north fri, but appears the boundary will stall just s
of the nc va border. Gradient will be on the weak side with
winds 5 to 10 kt fri. High strengthens a bit for the weekend
with gradient becoming a little more defined as inland areas
warm up. Southwest flow on Sat will be closer to 10 to 15 kt.

Seas 2 to 3 ft Fri build to 3 to 4 ft Sat as winds become
southwest and increase in speed.

Ilm watches warnings advisories
Sc... Dense fog advisory until noon est today for scz017-023.

Nc... None.

Marine... Dense fog advisory until noon est today for amz250-252-254-256.

Synopsis...

near term... Mjc
short term... Rjd
long term... Iii
aviation... Dl
marine...



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 13 mi44 min 1035 hPa (+1.2)
NIWS1 - North Inlet-Winyah Bay Reserve, SC 14 mi59 min ESE 1 64°F 1032 hPa64°F
SSBN7 39 mi122 min 2 ft
41024 - Sunset Nearshore (SUN 2) 39 mi36 min SE 1.9 G 3.9 59°F 55°F1031.7 hPa

Wind History for Springmaid Pier, SC
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach Air Force Base, SC14 mi48 minSSE 710.00 miFair66°F64°F96%1032.2 hPa
Georgetown County Airport , SC20 mi49 minESE 310.00 miPartly Cloudy68°F66°F94%1031.8 hPa
Conway Horry County Airport, SC20 mi49 minSSE 77.00 miFair70°F69°F100%1031.8 hPa

Wind History from MYR (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last 24hrN5N4N4NE3CalmS4SW4CalmCalmCalmE3CalmSE4SE3E3CalmCalmCalmCalmCalmSE3CalmCalmSE3
1 day agoN11NE14E9E7E12E11E12E11
G18
E12
G21
E13E16
G21
E12
G19
E11E11
G21
E10
G17
NE10NE7NE7NE7N5NE5N5--N7
2 days ago----E15
G19
E13E9E7E9NE4N5----SE5SE5SW10SW11SW4SW7W7W9NW7NW3N5NW4N8

Tide / Current Tables for Wachesaw Landing, Waccamaw River, South Carolina
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Wachesaw Landing
Click for Map
Tue -- 01:25 AM EST     2.78 feet High Tide
Tue -- 06:55 AM EST     Sunrise
Tue -- 08:38 AM EST     -0.05 feet Low Tide
Tue -- 09:48 AM EST     Moonrise
Tue -- 01:52 PM EST     2.68 feet High Tide
Tue -- 06:05 PM EST     Sunset
Tue -- 09:02 PM EST     -0.22 feet Low Tide
Tue -- 10:50 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.32.72.72.52.11.50.90.30-00.41.222.52.72.52.21.710.4-0-0.20.10.8

Tide / Current Tables for Midway Inlet North, Pawleys Island, South Carolina
   EDIT      (on/off)   Help   One Week of Data
Midway Inlet North
Click for Map
Tue -- 05:01 AM EST     0.04 feet Low Tide
Tue -- 06:55 AM EST     Sunrise
Tue -- 09:48 AM EST     Moonrise
Tue -- 10:35 AM EST     4.22 feet High Tide
Tue -- 05:25 PM EST     -0.08 feet Low Tide
Tue -- 06:05 PM EST     Sunset
Tue -- 10:50 PM EST     Moonset
Tue -- 11:00 PM EST     4.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.82.91.90.90.300.41.42.63.64.14.23.83.12.11.20.4-000.82.13.44.24.5

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Wilmington, NC (10,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Wilmington, 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.