Friday, March23, 2018

Marine Weather and Tides
Florence, SC

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 7:16AMSunset 7:34PM Friday March 23, 2018 1:01 AM EDT (05:01 UTC) Moonrise 10:39AMMoonset 12:00AM Illumination 38% Phase: Waxing Crescent; Moon at 6 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- 739 Pm Edt Thu Mar 22 2018
Tonight..NW winds 10 to 15 kt, becoming N 15 to 20 kt late. Seas 2 to 3 ft.
Fri..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri night..N winds 10 kt. Seas 2 ft in the evening, then 1 to 2 ft.
Sat..NE winds 10 to 15 kt, becoming se 10 kt in the afternoon. Seas 1 to 2 ft. A slight chance of rain.
Sat night..SE winds 10 kt, becoming ne after midnight. Seas 2 to 3 ft. A chance of rain.
Sun..NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft, building to 3 to 5 ft in the afternoon. A chance of rain.
Sun night..NE winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 3 to 5 ft.
Mon..NE winds 15 to 20 kt. Seas 3 to 5 ft.
Tue..NE winds 10 to 15 kt, becoming se 10 kt or less. Seas 2 to 4 ft, subsiding to 2 to 3 ft.
AMZ200 739 Pm Edt Thu Mar 22 2018
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure will build into the area through Friday, maintaining northwest winds. A warm front will lift into the area Saturday ahead of a low pressure system. This low will move overhead Saturday trailing a cold front across the waters into Sunday. High pressure will build in from the north Monday and Tuesday.

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 230214
area forecast discussion
national weather service wilmington nc
1014 pm edt Thu mar 22 2018

High pressure will build in across the area through early
Saturday. A quick moving system will move across the area late
Saturday and Sunday. High pressure will build in from the
northeast for much of next week before a warming trend begins
late in the period.

Near term through Friday
As of 1020 pm Thursday... Winds are currently lighter than was
forecast. Areas where winds have become calm temperatures have
drop to 40 or just below. A few sites are showing winds of 5kt
are keeping temperatures up in the mid 40s. As with the very dry
air, and if winds continue to drop or remain calm. Many areas
away from the coast should see temperatures drop to around
freezing. Thus will contineu freeze warning for all areas except
for the coastal zones. Otherwise, a quiet clear night on the
docket for southeast north carolina and northeast south

Previous discussion... For Friday. Deep northwest flow
continues Fri as the 5h trough axis, moving off the coast
tonight, shifts farther east. Elongated surface high slips south
of the area later fri, maintaining low level northwest flow.

Northwest flow will prevent warm advection but does lend itself
to downsloping. It will also help keep the region very dry and
humidity values will again drop into the 20% range. Airmass
modification some downslope component will allow for highs a bit
warmer than today, but not significantly so. Highs will
struggle to reach low 60s.

Short term Friday night through 6 pm Friday
As of 3 pm Thursday... Weak frontal boundary draped just to our
south Friday night with a weak bubble of high pressure nosing in
from the north. Mid level flow will be a downsloping west-
northwesterly. In between 850mb flow will be wnw but backing in
direction, which will put the wind increasingly angled to isotherms
and lead to isentropic upglide. Cloud cover will increase from the
southwest to northeast. On Saturday as the isotherms start getting
packed tight leading to frontogenesis aloft, strengthening the
upglide. Light rain will break out, favoring northern zones.

Vorticity streaks overhead Saturday night pushing the forcing off
the coast as the elevated front weakens. Plenty of clouds will
remain behind but rainfall rates will diminish considerably.

Long term Friday night through Thursday
As of 3 pm Thursday... The extended period will feature considerable
amplitude at the mid levels with an omega blocking pattern
across the CONUS for a few days. This will keep the period
mostly dry with modifying temperatures. Initially however, a
cold front will be settling south embedded within yet another
deep trough across the northeast. Some isentropic lift may
provide a few cool rain showers Sunday but that's about if for
the period regarding pops. The entrenched surface high will take
some time to modify and this is reflected in the temperature
forecast grids. Highs will be stuck in the 50s Sunday and Monday
warming to the 70s by Thursday which is much closer to normal.

Overnight lows will follow the same trend with middle to upper
30s Monday and Tuesday morning warming to the 50s by the end of
the period.

Aviation 02z Friday through Tuesday
As of 00z... High confidence ofVFR tonight. No fog expected as
dewpoints will remain in the 20s with a light northwest wind.VFR
tomorrow. Winds begin to increase after 14z as the inversion breaks.

Late morning into the afternoon a few gusts to 15-19 kt with sct
clouds at 6k expected.

Extended outlook...VFR Fri sat. MVFR ifr rain developing Saturday
night and persisting into Sunday.VFR Mon tue.

Near term through Friday ...

as of 3 pm Thursday... Northwest flow continues with wind 5 to 10
knots just offshore and 15 to 20 at 25 miles off the coast. Seas
are running at 1 to 2 feet nearshore and 4 feet at 20 miles off
the coast. Surface high slowly shifts east-southeast on Friday,
maintaining offshore flow.

Short term Friday night through Saturday night ...

as of 3 pm Thursday... Northerly winds Friday night as high
pressure noses in behind a backdoor cold front stalled nearby to the
south. As the high weakens flow will turn more onshore. The position
of the boundary is not well agreed upon by various models so there
is some forecast uncertainty with respect to winds. Prefer the more
southerly solutions at this time due to mid level confluence to our
north favoring the high not washing out completely. Low pressure
developing on the front offshore could ramp winds up into advisory
levels late.

Long term Sunday through Tuesday ...

as of 3 pm Thursday... Surface high pressure anchored well to the
northeast will be the primary player for the extended marine
forecast. With a blocking pattern at the mid levels this feature will
remain in place through most of the period weakening late. Winds
from the northeast of 20-25 knots will be in place most of Sunday
dropping off only a couple of knots Monday. By later Tuesday winds
diminish considerably. The prolonged higher winds will produce
significant seas of 3-7 feet and a small craft advisory is a good
bet based on both winds and seas for a good chunk of the period.

Ilm watches warnings advisories
Sc... Freeze warning from 5 am to 9 am edt Friday for scz017-023-024-

Nc... Freeze warning from 5 am to 9 am edt Friday for ncz087-096-099-

Marine... None.


near term... Rh iii
short term... mbb
long term... Shk
aviation... Mrr

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 53 mi72 min N 5.1 G 8.9 45°F
MROS1 - 8661070 - Springmaid Pier, SC 55 mi44 min 1024.9 hPa

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Florence - Florence Regional Airport, SC4 mi69 minN 610.00 miFair46°F27°F47%1022.3 hPa
Marion County Airport, SC22 mi67 minNNW 410.00 miFair43°F28°F57%1022.3 hPa
Darlington, Darlington County Jetport Airport, SC23 mi66 minWNW 410.00 miFair42°F28°F58%1023.5 hPa

Wind History from FLO (wind in knots)
Last 24hrNW7W7W7W7NW7NW8NW8NW11NW9N13
1 day agoNE5N4CalmCalmS4N4N4W15
2 days agoSE6S10S6CalmS13S7SW8W10W11

Tide / Current Tables for Rhems, Black Mingo Creek, Black River, South Carolina
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Fri -- 12:48 AM EDT     0.01 feet Low Tide
Fri -- 12:55 AM EDT     Moonset
Fri -- 06:52 AM EDT     2.06 feet High Tide
Fri -- 07:17 AM EDT     Sunrise
Fri -- 11:38 AM EDT     Moonrise
Fri -- 01:31 PM EDT     0.39 feet Low Tide
Fri -- 07:21 PM EDT     1.70 feet High Tide
Fri -- 07:31 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Conway, RR. bridge, Waccamaw River, South Carolina
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Fri -- 12:54 AM EDT     Moonset
Fri -- 01:58 AM EDT     -0.15 feet Low Tide
Fri -- 07:15 AM EDT     Sunrise
Fri -- 07:56 AM EDT     1.44 feet High Tide
Fri -- 11:36 AM EDT     Moonrise
Fri -- 02:44 PM EDT     0.14 feet Low Tide
Fri -- 07:30 PM EDT     Sunset
Fri -- 08:31 PM EDT     1.20 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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GOES Local Image of Southeast    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 (1,6,7,8)
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Ground Weather Radar Station Wilmington, NC
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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.