Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Columbia, 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 7:11AMSunset 7:45PM Thursday March 30, 2017 12:40 PM EDT (16:40 UTC) Moonrise 8:10AMMoonset 9:47PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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
7 Day Forecast for Marine Location Near Columbia, SC
   Hourly   EDIT   Help
location: 34.03, -80.9     debug


Area Discussion for - Columbia, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kcae 301528
afdcae
area forecast discussion
national weather service columbia sc
1128 am edt Thu mar 30 2017

Synopsis
Moisture return, daytime heating, and a stationary front will
provide a chance of showers and thunderstorms this afternoon
and evening. The front will lift north as a warm front tonight
ahead of an upper trough and cold front that will move through
Friday morning, providing a continued chance of thunderstorms,
possibly severe. Drier air will enter the region behind the
departing system Friday afternoon, with high pressure building
into the mid atlantic ensuring fair weather through Sunday.

Next system to affect us Monday and provide a chance of showers
and thunderstorms.

Near term /until 7 pm this evening/
High pressure along the mid-atlantic coast ridging into the
carolinas with a stationary front over central ga. Weak
instability across the csra and southern midlands late this
morning with showers and thunderstorms developing along the
savannah river valley and south coast. Cold air damming across
the north midlands and piedmont.

Clouds breaking up from the central midlands to the csra.

The atmosphere is forecast to become moderately unstable with
lifted index values -4c to -6c and CAPE values around 1000-1500
j/kg. Hi-res models are in reasonable agreement showing
convective expanding across much of the midlands through the
afternoon. Low level shear is forecast to be 15 to 20
knots... And could be sufficient to sustain isolated severe
thunderstorms. Cold air aloft with 500mb temps around -14c and
wetbulb zero height around 10kft will support a marginal large
hail threat along with isolated damaging wind gusts. SPC has
outlooked the forecast are in a marginal risk with the slight
risk just to our west.

Still expect the most cloudiness across the north midlands with
high temperatures in the low 70s. A bit more Sun farther south
should allow temperatures to rise into the mid 70s to lower 80s
from the central midland to the csra... Depending on the amount
of sun.

Short term /7 pm this evening through 6 am Friday/
Main focus will be on thunderstorm chance and severe weather
potential tonight into Friday morning. Upper trough will move
through late tonight/Friday morning. Surface front to begin
lifting north as a warm front ahead of the approaching
system/cold front. Though some diurnal stabilization expected,
sufficient instability combined with considerable shear
expected to provide a severe threat. SPC has our fa in a mrgl
to slgt risk of severe. Cold front to move through by Friday
afternoon, with drier air filtering into the region. Breezy
conditions possible Friday afternoon.

Long term /Friday through Wednesday/
Upper ridge will shift into the SE CONUS sat/sun, while surface
high builds into the mid atlantic, ensuring fair weather for
our fa. Gfs/ec indicate next upper trough/surface front and
moisture return to provide a chance of showers and thunderstorms
mon/mon nt into Tue time frame, with another system possible
late in the forecast period or just beyond.

Aviation /15z Thursday through Monday/
Widespread MVFR CIGS across the TAF sites are forecast to
improve toVFR this afternoon. However... Convection now
affecting the csra expected to increase across the midlands taf
sites this afternoon as instability increases. Have included a
tempo group for thunder at each site.

Restrictions should return overnight with low clouds
redeveloping at least at cae/cub as wedge conditions try to
develop before a strong upper level system arrives towards
morning Friday which will bring another chance for showers and
storms. Did not mention thunder at this time for the second
round of convection as there is some uncertainty it will impact
terminals.

Extended aviation outlook... Restrictions possible in showers
and thunderstorms Friday and on Monday as cold fronts cross the
region.

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

Sc... None.



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
LMFS1 - Lake Murray SC 20 mi20 min E 7 G 9.9 70°F 1016.3 hPa
WATS1 - Lake Wateree, SC 24 mi70 min ESE 6 G 11 65°F

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia - Jim Hamilton L.B. Owens Airport, SC6 mi47 minVar 610.00 miMostly Cloudy74°F60°F62%1017.2 hPa
McEntire Air National Guard Weather Facility Base, SC9 mi42 minSE 1110.00 miMostly Cloudy75°F62°F64%1017.4 hPa
Columbia, Columbia Metropolitan Airport, SC13 mi1.7 hrsESE 1010.00 miOvercast71°F61°F71%1017.2 hPa
Winnsboro/Fairfield County Airport, SC23 mi45 minE 710.00 miOvercast68°F60°F78%1017.6 hPa
Shaw Air Force Base, SC23 mi42 minESE 810.00 miOvercast74°F60°F62%1017.3 hPa

Wind History from CUB (wind in knots)
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
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
Last 24hrCalmCalm54CalmNW6NW5CalmNE3Calm455SE655CalmCalmCalm--6E6SE76
1 day agoW13
G17
W12W13W6W7SW9W7SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE743
2 days ago--W10S11SW8W8NW6CalmCalmCalmSE4S9S8S6S6S6S6S3CalmCalmCalmSW4S7SW7W8

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Pimlico
Click for Map
Thu -- 01:19 AM EDT     2.18 feet High Tide
Thu -- 07:09 AM EDT     Sunrise
Thu -- 08:19 AM EDT     -0.68 feet Low Tide
Thu -- 09:07 AM EDT     Moonrise
Thu -- 01:50 PM EDT     1.95 feet High Tide
Thu -- 07:38 PM EDT     Sunset
Thu -- 08:33 PM EDT     -0.77 feet Low Tide
Thu -- 10:40 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.92.22.11.91.40.80.1-0.4-0.7-0.6-00.71.41.81.91.81.40.80.2-0.4-0.7-0.7-0.20.6

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
   EDIT      (on/off)   Help   One Week of Data
Jamestown Bridge
Click for Map
Thu -- 02:26 AM EDT     1.41 feet High Tide
Thu -- 07:08 AM EDT     Sunrise
Thu -- 09:05 AM EDT     Moonrise
Thu -- 10:58 AM EDT     -0.18 feet Low Tide
Thu -- 02:54 PM EDT     1.25 feet High Tide
Thu -- 07:37 PM EDT     Sunset
Thu -- 10:40 PM EDT     Moonset
Thu -- 11:14 PM EDT     -0.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.411.41.41.31.10.80.50.30-0.1-0.20.10.71.11.21.210.80.60.30.1-0.1-0.2

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Columbia, SC (12,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Columbia, SC
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.