Thursday, July29, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Myrtle Beach, SC

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:24AMSunset 8:19PM Thursday July 29, 2021 10:19 PM EDT (02:19 UTC) Moonrise 10:57PMMoonset 10:55AM Illumination 68% Phase: Waning Gibbous; Moon at 20 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
AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 922 Pm Edt Thu Jul 29 2021
.small craft advisory in effect from Friday afternoon through Friday evening...
Overnight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri..SW winds 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 3 to 5 ft.
Fri night..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers and tstms.
Sat..NW winds 5 to 10 kt, becoming se in the afternoon. Seas 2 to 3 ft. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Sat night..S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of tstms. A chance of showers.
Sun night..SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Showers likely with a chance of tstms.
Mon..SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers. Tstms likely through the day, then a chance of tstms through the night.
Tue..SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers with tstms likely through the day, then showers likely with a chance of tstms through the night. Winds and seas higher in and near tstms.
AMZ200 922 Pm Edt Thu Jul 29 2021
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A trough of low pressure dropping into eastern nc will bring increasing sw winds late tonight thru Fri. A cold front, dropping southward behind the trough, will stall near the carolina coasts Sat into early next week. Expect scattered tstms across the area waters each day as a result.


7 Day Forecast for Marine Location Near Myrtle Beach, SC
   Hourly   EDIT   Help
location: 33.68, -78.89     debug


Area Discussion for - Wilmington, NC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS62 KILM 300143 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 943 PM EDT Thu Jul 29 2021

SYNOPSIS. A warming trend continues into Friday as an upper ridge builds over the area, and a Heat Advisory has been issued over the entire area for Friday. A front will drop into the region Friday night, stalling along the coast this weekend through next week, bringing rounds of showers and periodic thunderstorms.

UPDATE. Low level SW-WSW nocturnal jet and a tightened sfc pg to keep sfc SW winds busy enough to keep fog development at bay. Also have increased SSW-SW winds over the coastal waters by atleast several knots, still below SCA thresholds. Could see a few 4 foot seas by daybreak, with the increase mainly due to wind driven waves. Will still have an underlying 1-2 foot ESE-SE present. Bumped tonights lows up a degree or 2 as a result. Otherwise, just looking at debris thin, possibly pockets of opaque, cirrus advecting overhead overnight into daytime Fri.

NEAR TERM /THROUGH FRIDAY NIGHT/. After a mostly clear night with lows in the mid 70s, the main weather concern in the near-term becomes the heat on Friday. A broad 500 mb ridge will extend from the Pacific Northwest, across the central plains, and into the mid-south states. Unseasonably warm air associated with these height anomalies will advect into the forecast area Friday afternoon on southwest winds ahead of a cold front. High temperature will reach the upper 90s, and although dewpoints will mix out into the lower 70s west of the sea breeze, this will still yield heat index values of 105-109, which will necessitate the issuance of a Heat Advisory. An afternoon sea breeze will knock temperatures down into the lower 90s close to the coast, but the net effect on heat indices will be minimal, as dewpoints in the marine layer will surge into the upper 70s.

Scattered thunderstorms are expected to develop Friday afternoon along and ahead of the cold front, and begin to impact our western counties as early as 19-20Z. This activity will push east through the late afternoon and likely linger into the evening in a moderately unstable airmass. Some of these storms may become strong to severe, with damaging wind gusts the primary threat. Areas generally along and north of a line from Florence to Shallotte to Southport are included in a marginal threat for severe weather in the Day 2 convective outlook.

SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/. Saturday starts off mainly dry before possible aftn shras/tstms especially near the coast due to the sea breeze. PoPs up to 40% along the coast and down to 20% far NW areas. High temps in the low/mid 90s, with heat indices around 105 over SW areas where another Heat Advisory may be necessary. Low rain chances continue into Sat night with a weak frontal boundary over the area and a slight uptick in deep-layer moisture. Low temps in the mid 70s most areas.

LONG TERM /SUNDAY THROUGH THURSDAY/. Long Term period will feature frequent high rain chances and slightly below normal temps on average due to the rain/cloud cover. Exception will be Sun when the combined heat and humidity will lead to another Heat Advisory possibly over the entire area. Best chance of rain will be Mon and Tue (80% PoPs most areas) as an upr-level trough takes stage over the eastern CONUS with a persistent low-level frontal boundary draped across the area providing additional forcing for ascent. Moderate to heavy rain possible as well at times next week.

AVIATION /02Z FRIDAY THROUGH TUESDAY/. VFR throughout the 00Z TAF Issuance Period . except included a PROB30 group for LBT and FLO for the threat of tstorms ahead of a cold front, mainly between 21z-24Z Fri. Sfc pg to remain tight enough overnight to keep fog development at bay, along with a SW 20-25 kt low level nocturnal jet. Winds to veer to the SW-WSW by daybreak Fri and increase in speeds as downslope flow and a tightening sfc pg continue. Looking at sustained 10-15 kt by aftn with gusts 20-25 kt at the coastal terminals once the sea breeze becomes established. The sea breeze will remain somewhat pinned due to the increased W-NW flow aloft. The downslope flow will also limit Cu development but should see debris ci and possibly high altocu by the end of this period.

Extended Outlook . Stalled front in the vicinity of the Eastern Carolinas will result in periodic MVFR/IFR from tstorms especially early next week.

MARINE. Through Friday Night: A weak surface trough inland combined with Bermuda high pressure will produce 10-15 kt southerly winds over the waters tonight into Friday. Surface pressure falls over the interior Carolinas on Friday ahead of a cold front will tighten the gradient, and SW winds will increase to 20 kt, with gusts to 25 kt. Will go ahead with a Small Craft Advisory all waters beginning at noon Friday. Seas will be predominantly composed of a 4-5 second SW wind wave that will build from 2 ft this evening to 3-4 ft on Friday.

Saturday Through Tuesday: Sub-SCA conditions expected this weekend into early next week. Main story through the period will be frequent chances for shras/tstms, as a frontal boundary remains just inland allowing for S/SW flow to continue over the local waters. Winds mainly 10-15 kt, but up to 20 kt at times especially late in the day. Seas mainly 2-4 ft, up to 5 ft out 20nm on occasional at times as wind waves pick up. A weak ESE swell will persist as well into early next week.

ILM WATCHES/WARNINGS/ADVISORIES. SC . Heat Advisory from 11 AM to 7 PM EDT Friday for SCZ017-023-024- 032-033-039-054>056-058-059. Beach Hazards Statement from 6 AM EDT Friday through Friday evening for SCZ054-056. NC . Heat Advisory from 11 AM to 7 PM EDT Friday for NCZ087-096-099- 105>110. Beach Hazards Statement from 6 AM EDT Friday through Friday evening for NCZ106-108. MARINE . Small Craft Advisory from noon Friday to midnight EDT Friday night for AMZ250-252-254-256.

SYNOPSIS . ILM UPDATE . DCH NEAR TERM . CRM SHORT TERM . MAS LONG TERM . MAS AVIATION . DCH MARINE . MAS/CRM


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 2 mi50 min 83°F
41024 - Sunset Nearshore (SUN 2) 24 mi72 min SW 14 G 19 83°F 85°F1016.1 hPa
SSBN7 24 mi63 min 84°F2 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 28 mi95 min S 6 82°F 1015 hPa77°F
41108 46 mi50 min 83°F2 ft

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. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach International Airport, SC2 mi24 minSSW 810.00 miFair82°F76°F82%1016.2 hPa
North Myrtle Beach Grand Strand Airport, SC13 mi27 minSSW 910.00 miFair82°F74°F77%1016 hPa
Conway Horry County Airport, SC16 mi45 minS 310.00 miFair79°F73°F84%1015.6 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
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
PM
Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Myrtle Beach, South Carolina
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Myrtle Beach
Click for Map
Thu -- 12:04 AM EDT     5.45 feet High Tide
Thu -- 06:08 AM EDT     0.41 feet Low Tide
Thu -- 06:25 AM EDT     Sunrise
Thu -- 11:55 AM EDT     Moonset
Thu -- 12:33 PM EDT     5.17 feet High Tide
Thu -- 06:33 PM EDT     1.11 feet Low Tide
Thu -- 08:17 PM EDT     Sunset
Thu -- 11:56 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
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
5.45.24.43.11.80.80.40.61.42.53.64.65.15.14.63.72.71.71.21.21.62.43.34.2

Tide / Current Tables for Socastee Bridge, South Carolina
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of Southeast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.