Wednesday, August12, 2020
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Marine Weather and Tides
Florence, SC

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:37AMSunset 8:10PM Wednesday August 12, 2020 8:37 PM EDT (00:37 UTC) Moonrise 12:00AMMoonset 1:48PM Illumination 34% Phase: Waning Crescent; Moon at 24 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- 326 Pm Edt Wed Aug 12 2020
Through 7 pm..S winds 5 to 10 kt. Seas 2 ft.
Tonight..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms after midnight.
Thu..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft. A chance of showers and tstms.
Thu night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms in the evening, then showers and tstms likely after midnight.
Fri..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Showers and tstms likely.
Fri night..SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Showers and tstms likely.
Sat..SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms likely.
Sat night..SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms likely.
Sun..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the evening, then diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. Showers and tstms likely .
Mon..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms.
AMZ200 326 Pm Edt Wed Aug 12 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure will remain over the western atlantic while a weak trough lingers inland through late week. A weak front will approach the coast Friday and linger just inland into the start of next week.


7 Day Forecast for Marine Location Near Florence, SC
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location: 34.14, -79.74     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 121935 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 335 PM EDT Wed Aug 12 2020

SYNOPSIS. High pressure extending westward toward the Carolinas from the central Atlantic will maintain southerly winds along with seasonably warm and humid conditions. Weak trough of low pressure over the area will produce greater coverage of storms into the weekend, but will diminish into early next week as trough moves offshore late Sunday into Monday.

NEAR TERM /THROUGH THURSDAY NIGHT/. Mid-level troughing to the west today will remain in place Thu, pumping an abundance of Gulf moisture over the region. Bermuda High and Piedmont trough will also contribute to broad southwest flow and enhanced low level moisture advection. Precipitable water around 2.1 inches today will rise to 2.3 to 2.4 inches later Thu and Thu night. Combine the deep moisture with CAPE in the neighborhood of 2500 J/kg, storm motion under 5 kt and a very deep warm cloud layer and the result will once again be storms capable of excessive rainfall. Coverage remains limited this afternoon and evening, but will increase on Thu. Weak trough in the vicinity today and Thu with hints of one, and possibly more, weak surface wave(s) developing along the trough Thu. The increase in low level convergence should help increase storm coverage Thu afternoon/evening. An increase in marine convection Thu night compared to tonight is also likely given the presence of the aforementioned surface wave(s). Increase in clouds and storms will keep highs near to slightly below climo. Lows will run several degrees above climo.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/. A lingering trough will remain over the Carolinas as low pressure lifts north on Friday. At the same time, the mid to upper trough extending down just east of the Mississippi Valley will dig southward as it shifts eastward through Saturday. These two features along with localized boundaries including sea breeze and an abundance of moisture, will all contribute to a bit more widespread coverage of thunderstorms both Fri and Sat. Pcp water values will be over 2 inches. By Sat aftn the sfc boundary seems to lift more inland and north leaving a stiff SW flow. This should focus better coverage over NC, but upper trough will be aligned with the best shortwave energy running up from the SW to W right over our forecast area. May see convection running into the night as trough shifts slowly eastward. Overall, expect hot and humid weather to continue with more widespread clouds and convection Fri into the weekend and temps up around 90 during the day and 70s overnight.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Mid to upper trough continues to shift eastward with shortwave pushing a sfc front eastward and both reaching off the Southeast coast later on Sunday. Overall, expect winds to shift around to the W-NW and with limited coverage of tstorms Sun night into Mon in a more zonal flow aloft. Pcp water values up near 2 inches early Sun morning will be down near or less than 1.5 inches by late Sun through at least Mon. Dewpoint temps should drop several degrees Sun night into Mon.

By midweek, the trough becomes more amplified again, as it digs down from the Great Lakes down to the Gulf coast. Shortwaves will rotate around up the upper trough through the Southeast allowing for greater coverage of storms once again Tues or Wed through midweek.

AVIATION /18Z WEDNESDAY THROUGH MONDAY/. Some light to moderate convection this afternoon into early evening. Given the wind direction, most of the convection will be inland as the resultant pushes west. Some isolated fog after midnight, with some MVFR ceilings possible by daybreak.

Extended Outlook . TSTMs, isolated to scattered will continue for the next 7 days. Patches of morning fog generally between 8z-11z should be expected, or localized MVFR stratus. Winds outside of TSTMs should remain light, and southerly.

MARINE. Southerly flow continues into Thu before winds become more southwest as remains of weak surface trough push inland. Gradient tightens up a bit Thu with speeds increasing from 10 kt or less this afternoon and evening to 10 to 15 kt Thu and Thu night. Nocturnal convection is expected both tonight and Thu night, although coverage is likely to be higher Thu night. Seas run 2 to 3 ft through Thu and could bump to 2 to 4 ft Thu night. Southerly wind wave will continue to be dominant over a weak southeast swell.

S-SW flow will continue Fri through the weekend. Enhanced troughing over NC will push winds up a bit Fri into the weekend, which in turn will kick seas up a bit. Overall, expect seas in the 2 to 4 ft range, but may see a few 5 fters in the outer waters, especially on Fri. Winds should veer around to the W-NW as a weak front/trough moves through the waters from west to east late Sun into Mon morning. Expect increased coverage of thunderstorms this weekend. Coverage should decrease slightly by early next week after front/trough moves through.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . None.

SYNOPSIS . ILM NEAR TERM . III SHORT TERM . RGZ LONG TERM . RGZ AVIATION . III/43 MARINE . III/RGZ


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 53 mi67 min WNW 2.9 G 7 85°F
MROS1 - 8661070 - Springmaid Pier, SC 55 mi49 min 82°F

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Florence - Florence Regional Airport, SC4 mi44 minS 610.00 miFair82°F73°F77%1014.6 hPa
Marion County Airport, SC22 mi42 minN 010.00 mi81°F73°F79%1015.2 hPa
Darlington, Darlington County Jetport Airport, SC23 mi41 minS 310.00 miA Few Clouds84°F78°F82%1015.1 hPa

Link to 5 minute data for KFLO

Wind History from FLO (wind in knots)
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Last 24hrSE6----SE4S3CalmCalmE3CalmSE4E3E3E3E8SE5E7E6SE53E8SE7SE6SE9S6
1 day agoE11SE5S4SW7CalmE5SW3CalmS5SW6CalmW4S5S5SW4SW4S4--S5S4E6CalmNW3SE5
2 days agoE10SE64CalmE7S4S3S3W5SW4S3SW3W4CalmCalmSW4S6S6S8S7SW5NE5N3NE6

Tide / Current Tables for Rhems, Black Mingo Creek, Black River, South Carolina
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Rhems
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Wed -- 12:43 AM EDT     Moonrise
Wed -- 02:45 AM EDT     1.56 feet Low Tide
Wed -- 06:38 AM EDT     Sunrise
Wed -- 08:26 AM EDT     1.61 feet High Tide
Wed -- 02:45 PM EDT     Moonset
Wed -- 03:01 PM EDT     0.97 feet Low Tide
Wed -- 08:06 PM EDT     Sunset
Wed -- 09:09 PM EDT     1.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.71.61.61.61.61.61.61.61.61.61.51.41.31.11111.21.41.71.81.91.81.8

Tide / Current Tables for Conway, RR. bridge, Waccamaw River, South Carolina
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Conway
Click for Map
Wed -- 12:41 AM EDT     Moonrise
Wed -- 04:00 AM EDT     1.10 feet Low Tide
Wed -- 06:36 AM EDT     Sunrise
Wed -- 09:45 AM EDT     1.12 feet High Tide
Wed -- 02:44 PM EDT     Moonset
Wed -- 04:16 PM EDT     0.68 feet Low Tide
Wed -- 08:05 PM EDT     Sunset
Wed -- 10:28 PM EDT     1.29 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.21.11.11.11.11.11.11.11.11.11.110.90.80.70.70.70.811.11.21.31.3

Weather Map
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wmap_A
GEOS 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wilmington, NC (20,4,5,8)
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Ground Weather Radar Station Wilmington, 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 numerous 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.