Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Irmo, SC

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:21AMSunset 7:40PM Thursday March 23, 2017 10:18 PM EDT (02:18 UTC) Moonrise 3:28AMMoonset 2:16PM Illumination 13% Phase: Waning Crescent; Moon at 26 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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7 Day Forecast for Marine Location Near Irmo, SC
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location: 34.08, -81.18     debug


Area Discussion for - Columbia, SC
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Fxus62 kcae 232334
afdcae
area forecast discussion
national weather service columbia sc
734 pm edt Thu mar 23 2017

Synopsis
High pressure will maintain fair weather through Friday. A frontal
boundary will move into the region, and provide a chance of showers
and possible thunderstorms, mainly late Saturday night and Sunday.

Another front will move through Tuesday.

Near term /until 7 am Friday morning/
High pressure centered over the middle atlantic states this
afternoon will be off the coast tonight. More of an onshore
flow will develop in the forecast area as the high shifts
eastward. The significant moisture will remain shallow and
confined to the low levels because of upper ridging moving into
the area from the west. Expect stratocumulus at times under the
subsidence inversion. Leaned toward the more consistent GFS and
ecmwf MOS for the temperature forecast. Expect lows in the
middle and upper 30s in the north section tonight. However, the
chance of frost is low because of some mixing plus the models
suggest a 10-degree temperature-dew point temperature spread.

Short term /7 am Friday morning through Saturday night/
Surface high will begin to slowly weaken and shift slightly east
Friday, providing some moderation in temps/dewpoints. Upper ridge
over the area and strong subsidence expected. Weak isentropic lift
and moisture recovery may provide some stratus, possible fog, late
fri nt/sat morning. Deep low in the midwest will be moving slowly
east-northeast Saturday. Moisture continues to increase Saturday
with upper ridge weakening and shifting southeast... But lift mainly
west of the region and expect any showers to remain west of the
region through the afternoon. Continued warming trend.

Long term /Sunday through Thursday/
Closed upper low, and surface low, to shift NE from the central
plains to the great lakes, with upper trough axis approaching our
region Sat nt and moving through Sunday. Best upper dynamics to
remain to our north, but chance pops with possible thunderstorms
expected in weakly unstable air mass. Another upper trough/front
appears will move through Tuesday.

Aviation /00z Friday through Tuesday/
Vfr conditions are forecast through the TAF period but it is
possible MVFR ceilings may develop during the early morning
hours.

Onshore flow will increase low-level moisture as upper ridging
moves in from the west. ExpectVFR stratocumulus and possible
MVFR at times under the subsidence inversion after 06z and
lasting through 18z on Friday. The fog chance appears limited
by boundary layer mixing and the MOS forecast of significant
temperature-dew point temperature spread. Followed the GFS and
nam MOS and forecasted wind east to southeast 10 knots or less.

Extended aviation outlook... Restrictions may occur Saturday
morning in fog and stratus associated with an onshore flow.

Deeper moisture and a frontal system near the area may help
support scattered showers and thunderstorms with associated
restrictions Sunday and Monday.

Cae watches/warnings/advisories
Ga... None.

Sc... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LMFS1 - Lake Murray SC 5 mi59 min E 5.1 G 7 56°F 1030.8 hPa
WATS1 - Lake Wateree, SC 31 mi49 min Calm G 1 48°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia, Columbia Metropolitan Airport, SC9 mi83 minE 410.00 miPartly Cloudy56°F30°F37%1031.4 hPa
Columbia - Jim Hamilton L.B. Owens Airport, SC12 mi26 minN 010.00 miFair54°F28°F38%1032.4 hPa
Winnsboro/Fairfield County Airport, SC17 mi24 minE 610.00 miFair52°F28°F41%1031.8 hPa
McEntire Air National Guard Weather Facility Base, SC23 mi81 minE 310.00 miFair52°F31°F46%1032.2 hPa

Wind History from CAE (wind in knots)
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Last 24hrE3NE5E9E10E7E5E8E13NE8NE7NE7E12
G19
E11E12E8E9E10NE7E4E9E7E6E4E4
1 day agoNW9
G17
W11S7CalmCalmW6W6W8W5N6N5NE7N12
G21
N10NE7N10
G14
N11
G18
N10NE9NE9N10NE5NE6E5
2 days agoCalmCalmCalmCalmCalmCalmW3W3W5SW5SW6W9SW735W7SW8W9
G15
W9
G15
W10W7CalmCalmSW4

Tide / Current Tables for Bacon Bridge, Ashley River, South Carolina
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Bacon Bridge
Click for Map
Thu -- 02:04 AM EDT     0.11 feet Low Tide
Thu -- 04:21 AM EDT     Moonrise
Thu -- 07:20 AM EDT     Sunrise
Thu -- 07:42 AM EDT     1.96 feet High Tide
Thu -- 02:54 PM EDT     0.09 feet Low Tide
Thu -- 03:14 PM EDT     Moonset
Thu -- 07:34 PM EDT     Sunset
Thu -- 07:54 PM EDT     1.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.20.10.20.71.21.61.921.81.61.20.80.40.20.10.30.81.41.71.81.71.51.2

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
Click for Map
Thu -- 02:16 AM EDT     0.63 feet Low Tide
Thu -- 04:21 AM EDT     Moonrise
Thu -- 07:19 AM EDT     Sunrise
Thu -- 08:16 AM EDT     1.71 feet High Tide
Thu -- 03:06 PM EDT     0.51 feet Low Tide
Thu -- 03:13 PM EDT     Moonset
Thu -- 07:33 PM EDT     Sunset
Thu -- 08:28 PM EDT     1.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.70.60.70.91.11.41.61.71.71.51.310.80.60.50.60.81.21.41.61.61.51.2

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Columbia, SC (22,6,7,8)
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Ground Weather Radar Station Columbia, SC
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weather_mapweather_map weather_map

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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 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.