Thursday, November21, 2019 L-36.com


Marine Weather and Tides
Hollywood, SC

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:53AMSunset 5:17PM Thursday November 21, 2019 6:44 AM EST (11:44 UTC) Moonrise 1:15AMMoonset 2:23PM Illumination 31% 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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AMZ330 Charleston Harbor- 639 Am Est Thu Nov 21 2019
Today..NE winds 5 to 10 kt, becoming se late.
Tonight..Variable winds 5 kt.
Fri..SW winds 5 to 10 kt.
Fri night..SW winds 5 kt.
Sat..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon.
Sat night..SW winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Showers likely, mainly in the evening.
Sun..NW winds 10 to 15 kt.
Sun night..NW winds 5 to 10 kt.
Mon..W winds 5 kt.
Mon night..W winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 57 degrees.
AMZ300 639 Am Est Thu Nov 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail across the southeast u.s. Through Friday. A cold front will move through the area Saturday night, followed by high pressure for the first half of next week.


7 Day Forecast for Marine Location Near Hollywood, SC
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location: 32.73, -80.07     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 210911 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 411 AM EST Thu Nov 21 2019

SYNOPSIS. High pressure will prevail across the Southeast U.S. through Friday. A cold front will move through the area Saturday night, followed by high pressure for the first half of next week.



NEAR TERM /THROUGH TONIGHT/. Today: Aloft, broad ridging will prevail across eastern third of the CONUS. At the surface, high pressure will be the primary feature through the day and become centered near the coast along the NC/SC border late this afternoon. Overall, nothing really significant to point out in the forecast. We will see more high clouds than we did on Wednesday, but this will have a very minimal impact on forecast parameters. Temperatures should be a degree or two warmer, and highs are expected to range in the mid to upper 60s.

Tonight: No significant changes are expected through the overnight. Broad ridging aloft will flatten out into a more zonal flow and surface high pressure will remain in control. The forecast remains dry with just scattered high clouds passing through. Lows should be near climatological normals, ranging in the mid to upper 40s.



SHORT TERM /FRIDAY THROUGH SUNDAY/. Friday: The mid-levels will consist of semi-zonal flow over our area as a trough passes to the distant north and high pressure is located well south of FL. At the surface, high pressure will initially be located over or just along the Southeast coast in the morning, moving offshore through the afternoon and into the night. Strengthening low pressure will move from the Lower MS Valley to the TN Valley overnight. A cold front attached to this low will be dragged eastwards, towards our area. However, it's not expected to reach our area overnight. Subsidence and initial dry air across the region associated with the departing high should dominate the forecast. Though, clouds will be on the increase ahead of the front. High temperatures are expected to be above normal due to southwest surface winds. Likewise, lows will be mild, especially due to the increasing clouds.

Saturday: Semi-zonal mid-level flow will be overhead in the morning while a trough will be over the MS Valley. The trough will move eastward while strengthening/amplifying a bit, with its best energy moving just to our north overnight. At the surface, low pressure initially located over the TN Valley in the morning will zoom to the northeast with time. The associated cold front will be pulled to the east, towards our area during the day. Models are in good agreement showing the cold front quickly moving through our area overnight. The best moisture remains just ahead of the front, with a band of PWATs possibly exceeding 1.5" in the evening. The combination of this moisture and overall atmospheric lift (front/trough/jet support) will generate showers ahead of and with the front. During the day we continue to have the highest POPs far inland during the afternoon (chance category), tapering towards the coast. But POPs rapidly increase to the likely category from west to east in the evening, then decrease just as rapidly with the frontal passage overnight. Most areas should see total QPF ~0.1". Despite mostly cloudy skies, warm air advection ahead of the front will lead to high temperatures well into the 70s and mild lows.

Sunday: Mid-level troughing over the East Coast in the morning will weaken and shift offshore, causing semi-zonal flow to develop over our area. At the surface, a cold front offshore in the morning will quickly move away while high pressure initially centered over TX moves eastward. The eastern periphery of this high will stretch into our area, bringing subsidence and a dry weather forecast. Mostly sunny skies and west winds should lead to high temperatures in the 60s.



LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/. Models are in great agreement showing high pressure across the region Sunday night into Monday night. Expect dry conditions with temperatures within a few degrees of season values during this time period. Tuesday and Wednesday the 00Z models differ on the creation, evolution, and path of a storm system starting over the central U.S. Until they come into better agreement, we went with a blended forecast.



AVIATION /08Z THURSDAY THROUGH MONDAY/. VFR conditions will prevail at KCHS and KSAV through 06z Friday.

Extended Aviation Outlook: VFR through Saturday. A cold front is expected to bring flight restrictions Saturday night. VFR returns on Sunday.



MARINE. Today and Tonight: High pressure will prevail through the period. Northeast winds this morning should top out in the 10-15 knot range, decreasing in speed and turning more southeasterly and southerly with time. Seas are forecast to range 1-3 ft.

High pressure will prevail across the Southeast U.S. Friday, then move offshore Friday night. The pressure gradient during this time period should yield winds no more than 10-15 kt and seas 2-3 ft. The high continues to move offshore Saturday while a cold front approaches from the west. The front is expected to move through the coastal waters Saturday night. Increased winds ahead of and just behind the front will necessitate Small Craft Advisories for all of the marine zones, possibly including Charleston Harbor, for Saturday night. The worst conditions are expected across the Charleston waters and the GA waters beyond 20 nm where seas could also peak in the 5-7 ft range. Sunday morning the front will be racing offshore while high pressure builds in from the west. The pressure gradient quickly lowers, allowing winds and seas to trend downwards. The advisories are expected to be finished by Sunday afternoon. Monday high pressure will prevail across the Southeast U.S., bringing tranquil marine conditions.



CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.





NEAR TERM . BSH SHORT TERM . MS LONG TERM . MS AVIATION . BSH/MS MARINE . BSH/MS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 9 mi56 min NW 2.9 G 7 49°F 57°F1024.9 hPa
FBIS1 - Folly Island, SC 10 mi44 min NNE 8.9 G 11 49°F 1025.2 hPa (+0.3)42°F
ACXS1 - ACE Basin Reserve, SC 24 mi119 min Calm 41°F 1025 hPa41°F
41033 36 mi36 min NE 14 G 18 55°F 59°F1025.7 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 54 mi44 min NE 12 G 16 76°F1024.4 hPa (+1.1)

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC4 mi49 minN 310.00 miFair45°F41°F87%1025.1 hPa
Charleston, Charleston Air Force Base, SC13 mi48 minNNE 510.00 miFair42°F37°F82%1024.8 hPa
Mount Pleasant Regional-Faison Field, SC19 mi49 minN 010.00 miFair41°F39°F93%1024.7 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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Last 24hrW7NW7N5N7N10N9NW9N7N8N6N4NW3W3CalmCalmCalmW3CalmW3CalmCalmN4N6N4
1 day agoCalmCalmW4CalmW7SW5W10W11W10W8W4CalmCalmCalmCalmW3CalmCalmCalmCalmW3W6W5W5
2 days agoCalmCalmCalmCalmNW8NW7W9W7NW6NW6
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Tide / Current Tables for Church Creek bridge, Wadmalaw River, South Carolina
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Church Creek bridge
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Thu -- 01:15 AM EST     Moonrise
Thu -- 04:49 AM EST     7.01 feet High Tide
Thu -- 06:55 AM EST     Sunrise
Thu -- 09:58 AM EST     0.51 feet Low Tide
Thu -- 02:23 PM EST     Moonset
Thu -- 05:09 PM EST     7.58 feet High Tide
Thu -- 05:16 PM EST     Sunset
Thu -- 10:33 PM EST     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.53.85.16.16.876.24.62.71.10.50.923.556.37.27.67.15.73.71.80.50.4

Tide / Current Tables for Charleston Harbor, off Fort Sumter, South Carolina Current (expired 1996-12-31)
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Charleston Harbor
Click for Map
Thu -- 12:02 AM EST     1.85 knots Max Flood
Thu -- 01:14 AM EST     Moonrise
Thu -- 03:28 AM EST     -0.00 knots Slack
Thu -- 06:32 AM EST     -2.27 knots Max Ebb
Thu -- 06:54 AM EST     Sunrise
Thu -- 09:52 AM EST     0.00 knots Slack
Thu -- 12:31 PM EST     2.09 knots Max Flood
Thu -- 02:22 PM EST     Moonset
Thu -- 04:00 PM EST     -0.00 knots Slack
Thu -- 05:15 PM EST     Sunset
Thu -- 07:08 PM EST     -2.54 knots Max Ebb
Thu -- 10:32 PM EST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.61.20.4-0.6-1.6-2.2-2.2-1.8-10.21.3221.610-1.2-2.2-2.5-2.4-1.8-0.70.6

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 Charleston, SC (6,6,7,8)
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Ground Weather Radar Station Charleston, SC
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