Wednesday, April21, 2021
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Marine Weather and Tides
Ocean Isle Beach, NC

Version 3.4
NOTICE
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 6:35AMSunset 7:52PM Wednesday April 21, 2021 6:56 AM EDT (10:56 UTC) Moonrise 12:51PMMoonset 2:24AM Illumination 70% Phase: Waxing Gibbous; Moon at 9 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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AMZ252 Coastal Waters From Cape Fear Nc To Little River Inlet Sc Out 20 Nm- 623 Am Edt Wed Apr 21 2021
.small craft advisory in effect from 6 pm edt this evening through Thursday morning...
Today..SW winds 5 to 10 kt, increasing to 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Tonight..NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Thu..N winds 10 to 15 kt with gusts up to 25 kt, becoming W in the afternoon. Seas 3 to 4 ft.
Thu night..W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 ft.
Fri..N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 ft.
Fri night..S winds 10 to 15 kt. Seas 2 to 3 ft.
Sat..S winds 10 to 15 kt, becoming sw 20 to 25 kt. Seas 4 to 6 ft, building to 6 to 8 ft. Showers.
Sun..NW winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft.
AMZ200 623 Am Edt Wed Apr 21 2021
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A strong cold front will move off the coast late this afternoon. Strong offshore winds tonight will diminish Thursday as canadian high pressure builds in from the west. The high will move offshore Friday. Approaching low pressure will bring showers and more wind this weekend.


7 Day Forecast for Marine Location Near Ocean Isle Beach, NC
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location: 33.91, -78.38     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 210729 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 329 AM EDT Wed Apr 21 2021

SYNOPSIS. Dry and breezy conditions area-wide today ahead of a cold front. The front will cross the coast this evening, with colder and drier air moving in Thursday and Friday. A storm system will move across from the Gulf Coast states Saturday into early Sunday bringing moderate rainfall. High pressure is expected early next week across the region.

NEAR TERM /THROUGH THURSDAY/. High pressure will continue to move away from the North Carolina coast today as a strong cold front approaches from the west. Southwest winds should veer more westerly with time today as the front approaches. Without the benefit of Atlantic or Gulf moisture, dewpoints should steadily fall throughout the day as vertical mixing grows deeper. Only scattered cumulus clouds are expected to develop this afternoon. Given dewpoints should plunge into the 40s, convective cloud bases could be 7000 feet AGL or higher. I'll keep today's forecast dry as model forecast soundings continue to show extremely dry air advecting in above the 700 mb level. That only leaves a few thousand feet of room for cloud growth between the LCL and the dry air aloft, insufficient for showers to form.

Highs today are expected to reach the lower 80s near the coast with upper 70s inland. The Brunswick County beaches will also remain a little cooler with prevailing west-southwest winds taking a trajectory across the nearshore waters where ocean temps are still in the mid 60s.

It appears the front will reach the area between 3-7 pm with an abrupt shift to northwest winds. Wind gusts near the front should reach 30 mph during the afternoon and early evening. Cold advection will continue overnight with gusty winds gradually diminishing. Forecast lows are in the lower 40s except some upper 30s west of I- 95. This is on the upper edge of the MOS guidance range given a well- mixed boundary layer expected. Sunshine but cool weather is expected Thursday with highs only in the mid 60s.

SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/. Short term period will begin with cool and dry conditions due to lingering Canadian air and high pressure. Ideal radiational cooling conditions Thursday night, with clear skies and calm winds, will lower temps to near or just below 40 degrees away from the coast. Still possibility of patchy frost in parts of SE NC, particularly Bladen and Pender counties in known cold spots. Friday will be mostly clear and cool with highs around 70 degrees as high pressure overhead early in the day slides offshore in the afternoon. RHs will again dip below 30%, but expecting very light winds during the day due to aforementioned high pressure. Could see scattered mid and high levels clouds later in the day Friday as moisture moves in ahead of the weekend system. Rain chances will begin to increase from the southwest after midnight Friday night.

LONG TERM /SATURDAY THROUGH TUESDAY/. Main event for the long term remains a low pressure system that will build over the lower Mississippi Valley early Saturday. As the low approaches the Southeast, a warm front will lift north across the area early Saturday. Deep isentropic lift within a deep moist atmosphere could lead to moderate rain rates at times, particularly Saturday afternoon. Instability will be hard to come by most of the day, with slight chance of thunderstorms Saturday evening. The low will move across the Mid-Atlantic Saturday night, pushing a cold front across the area and ending rain chances by daybreak Sunday. Overall, there is potential for 1-2 inches of rain across the area Saturday through Saturday night. This could prove beneficial since most of our area has seen well below normal rainfall over the past 30 days. Dry high pressure builds in Sunday night through Tuesday, with a warming trend from Sunday through middle of next week.

AVIATION /08Z WEDNESDAY THROUGH SUNDAY/. Patchy ground fog is possible through daybreak at the ILM and CRE airports. VFR conditions should are expected elsewhere, and VFR conditions should continue throughout the day into tonight. Increasing southwest winds will develop today, with gusts reaching 25 knots this afternoon as a cold front approaches from the west. Fairly dry conditions surrounding the front mean convective cloud bases will be above 7000 feet AGL, however showers or t-storms are not expected as very dry air aloft and a subsidence inversion near 10,000 feet AGL should limit the depth of cumulus clouds. Surface winds will veer northwesterly behind the front later this afternoon, with breezy northerly winds continuing through the evening.

Extended Outlook . MVFR ceilings and visibilities are possible Saturday and Saturday night as low pressure spreads clouds and showers in from the southwest. Otherwise VFR.

MARINE. Through Thursday: All eyes are focused on a strong cold front currently moving quickly eastward across Tennessee and Alabama. This front should arrive at the South and North Carolina coast late this afternoon and will create an abrupt shift to northwest winds. Wind speeds should increase to 15-20 knots this afternoon in a combination of a tightening pressure gradient ahead of the front and local seabreeze effects. After the front passes offshore, winds should increase to 20-25 knots with gusts to 30 knots. The strongest winds should occur during the late evening hours during the period when the most rapid temperature change is occurring. The Small Craft Advisory will remain in effect from 6 pm this evening until 7 am Thursday morning.

Cold air will continue to stream offshore overnight into Thursday with wind speeds diminishing to 10 knots or less by noon Thursday. Offshore wind trajectories will limit how large seas can build, however short wave periods less than 5 seconds will be very uncomfortable for small craft.

Thursday Night through Sunday . Benign marine conditions expected start of this period, with winds around 10kts or less and seas around 2 ft Thursday night and Friday. South winds begin to increase Friday night through Saturday evening as a storm system approaches from the Gulf states and a warm front lifts north across the waters on Saturday. South winds 10-15 kts Friday night will quickly increase to 20-25 kts Saturday afternoon through evening hours with gusts around 30 kts. 2-3 ft seas Friday night are expected to increase to 6-8 ft by Saturday evening as a 7 sec wave set builds from the south. Gusty winds will veer to westerlies around 20 kts by Sunday morning, with seas remaining elevated around 6-8 ft, as low pressure moves across the Mid-Atlantic to the north. NW winds 10-15 kts during the day Sunday under continued tight pressure gradient as seas slowly decrease with the cutoff of southerly fetch.

FIRE WEATHER. Breezy southwest winds will develop along with very deep mixing heights of 8000-9000 feet today ahead of an incoming strong cold front. Southwest winds veering more westerly by late morning will shut off any significant inflow of moisture from the Gulf or Atlantic, and dewpoints are expected to fall throughout the day. Minimum relative humidity in the 25-30 percent range coupled with winds increasing to 15-20 mph and gusts near 30 mph will necessitate a Red Flag Warning for all of our South Carolina forecast area plus Robeson County in North Carolina. Winds aloft are forecast to meet the Byram/Brotak profile criteria and the Haines index should reach 5, all indicative of a potentially dangerous fire weather situation.

Forestry officials have requested a Fire Danger Statement for the remainder of our counties in southeastern North Carolina not included in the warning.

Minimum relative humidity will likely dip even lower on Thursday afternoon, 20-25 percent, but wind speeds should remain 10 mph or less.

ILM WATCHES/WARNINGS/ADVISORIES. SC . Red Flag Warning from 2 PM this afternoon to 7 PM EDT this evening for SCZ017-023-024-032-033-039-054>056-058-059. Beach Hazards Statement through this evening for SCZ054-056. NC . Red Flag Warning from 2 PM this afternoon to 7 PM EDT this evening for NCZ087. Beach Hazards Statement through this evening for NCZ106-108- 110. MARINE . Small Craft Advisory from 6 PM this evening to 7 AM EDT Thursday for AMZ250-252-254-256.

SYNOPSIS . ILM NEAR TERM . TRA SHORT TERM . VAO LONG TERM . VAO AVIATION . TRA MARINE . TRA/VAO FIRE WEATHER . TRA


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SSBN7 7 mi40 min 66°F1 ft
41024 - Sunset Nearshore (SUN 2) 7 mi49 min WSW 7.8 G 9.7 66°F 66°F1013.2 hPa
41108 23 mi57 min 66°F2 ft
MBIN7 30 mi57 min WSW 2.9 G 4.1 62°F 1010.7 hPa (-1.3)
WLON7 32 mi57 min 59°F 68°F1011.7 hPa (-1.2)
MROS1 - 8661070 - Springmaid Pier, SC 33 mi57 min 64°F
NOXN7 - North Carolina Reserve, NC 33 mi72 min WSW 1.9 61°F 59°F
MBNN7 35 mi57 min WSW 2.9 G 4.1 60°F 1011.1 hPa (-1.3)
JMPN7 - 8658163 - Johnny Mercer Pier, Wrightsville Beach, NC 38 mi57 min SSW 5.1 G 5.1 63°F 65°F1011.3 hPa (-1.2)
41038 - ILM2 - 5 miles SE of Wrightsville Beach, NC 39 mi49 min SSW 7.8 G 9.7 66°F 65°F1011.8 hPa
41110 - Masonboro Inlet, NC 39 mi50 min 65°F2 ft
41013 - Frying Pan Shoals, NC Buoy 46 mi37 min SW 3.9 G 5.8 68°F1011.5 hPa

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick County Airport, NC16 mi62 minN 010.00 miFair55°F52°F88%1012.2 hPa
North Myrtle Beach Grand Strand Airport, SC19 mi64 minN 00.75 miFog/Mist57°F56°F96%1011.9 hPa

Link to 5 minute data for KSUT

Wind History from SUT (wind in knots)
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Last 24hrCalmCalmSE4E5SE5E5E7SE7SE8SE5E5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
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N9N4N5CalmCalmCalmCalmCalmCalmCalmCalmN3
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Tide / Current Tables for Shallotte Inlet (Bowen Point), North Carolina
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Shallotte Inlet (Bowen Point)
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Wed -- 03:24 AM EDT     Moonset
Wed -- 03:33 AM EDT     4.62 feet High Tide
Wed -- 06:35 AM EDT     Sunrise
Wed -- 10:24 AM EDT     0.76 feet Low Tide
Wed -- 01:51 PM EDT     Moonrise
Wed -- 04:11 PM EDT     4.05 feet High Tide
Wed -- 07:49 PM EDT     Sunset
Wed -- 10:42 PM EDT     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.23.34.14.64.64.23.52.61.81.20.80.91.42.33.23.843.93.52.71.91.20.70.6

Tide / Current Tables for Tubbs Inlet, North Carolina
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Tubbs Inlet
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Wed -- 03:04 AM EDT     4.36 feet High Tide
Wed -- 03:24 AM EDT     Moonset
Wed -- 06:35 AM EDT     Sunrise
Wed -- 09:44 AM EDT     0.78 feet Low Tide
Wed -- 01:51 PM EDT     Moonrise
Wed -- 03:42 PM EDT     3.82 feet High Tide
Wed -- 07:49 PM EDT     Sunset
Wed -- 10:02 PM EDT     0.62 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.73.64.14.44.23.72.921.40.90.81.21.92.73.33.73.83.52.92.11.40.90.60.9

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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.
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