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Marine Weather and Tides Rockville, 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.

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Sunrise 6:34AM

Sunset 8:16PM

Tuesday August 4, 2020 10:06 AM EDT (14:06 UTC)

Moonrise 8:20PM

Moonset 6:21AM

Illumination 100%

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.

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7 Day Forecast for Marine Location Near Rockville, SC

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Area Discussion for - Charleston, SC

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FXUS62 KCHS 041135 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 735 AM EDT Tue Aug 4 2020

SYNOPSIS. A stationary front will stall out across the region through late week keeping rain chances a bit higher than normal.

NEAR TERM /THROUGH TONIGHT/. As of 730 AM: Sfc observations and Nighttime RGB indicated a large area of IFR stratus across the region. The low clouds may thick during the early daylight hours, then dissipating during the mid morning hours. I will update the forecast to adjust sky cover and morning temperatures.

As of 330 AM: Recent water vapor images show drier air pushing west to east across the forecast area in the wake of Isaias. KCLX detected a cluster of showers across the outer GA water. The activity appeared associated with a S/W on the east side of a mid- level long wave trough, expected to slide east over the Atlantic. The morning should feature at least partly sunny conditions across SE GA and SC, resulting in steadily warming temperatures. High resolutions indicated that a sea breeze by mid day, pushing inland during the afternoon hours. Temperature across SE GA are expected to peak in the mid 90s with dewpoints in the lower to mid 70s, yielding CAPE values between 2500-3000 J/kg. The moderate instability with DCAPE values around 1000 J/kg could support a severe thunderstorm or two over SE GA this afternoon. In addition, a GA coastal counties will see hot conditions this afternoon with heat index values around 105 degrees.

Tonight: The mid level trough axis will approach from the west. A few showers and thunderstorms may remain over the Atlantic through the overnight hours, land areas appear dry. Low temperatures are forecast to range from the mid 70s inland to upper 70s along the coast.

SHORT TERM /WEDNESDAY THROUGH FRIDAY/. Moderate confidence this period. The area will remain in a weak troughing pattern which will lead to at or above normal rain chances each day given the deep moisture continuing in place. Temperatures should remain near to above normal. Heat indices could peak close to Advisory levels (110 degrees) each day just inland from the coast.

LONG TERM /FRIDAY NIGHT THROUGH MONDAY/. Not much change to the weather pattern expected into early next week with the continuation of near to above normal rain chances and temperatures.

AVIATION /11Z TUESDAY THROUGH SATURDAY/. Prior to 12Z TAFs: Sfc observations and Nighttime RGB indicated a large area of IFR stratus across the region. Periods of restrictive ceilings are possible across the terminals through 15Z. High resolution guidance indicates that scattered showers and thunderstorms will develop across SE GA this afternoon. The potential for convection at KSAV will be highlighted with a TEMPO from 19-23Z. Otherwise, conditions should feature a steady SSW wind and Cu with bases around 5 kft.

Extended Aviation Outlook: High confidence in mostly VFR conditions at KCHS/KSAV through the weekend, mostly each afternoon/evening.

MARINE. Today and tonight, winds will remain from the ESE at around 10 kts with seas between 2- 4 ft.

Wednesday through Sunday: No significant concerns through the period with a fairly typical summertime pattern in place with mostly southerly winds 10-15 kt or less and seas 4 feet or less.

Rip Currents: Lingering backswell generated by Isaias will support a moderate risk for rip currents at all beaches today.

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

NEAR TERM . NED SHORT TERM . RJB LONG TERM . RJB AVIATION . NED/RJB MARINE . NED/RJB

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
ACXS1 - ACE Basin Reserve, SC	9 mi	81 min	NNW 1	75°F			1016 hPa	71°F
FBIS1 - Folly Island, SC	22 mi	66 min	WNW 2.9 G 5.1	78°F			1016 hPa (+2.1)
41033	23 mi	58 min	N 5.8 G 9.7	77°F	84°F		1015.2 hPa
CHTS1	23 mi	48 min	WSW 4.1 G 6	82°F	84°F		1015.6 hPa
41029 - Capers Nearshore (CAP 2)	38 mi	58 min	NW 7.8 G 12	77°F	83°F		1015.1 hPa
FPKG1 - 8670870 - Fort Pulaski, GA	51 mi	48 min	N 2.9 G 5.1	76°F	84°F		1015.9 hPa

Wind History for Charleston, SC

(wind in knots)    EDIT      (on/off)   Help

10 AM

11 AM

12 PM

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

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Last 24hr

NE12 G22

NE9

E15

NE12 G15

NE10 G13

NE13 G17

NE20 G25

NE30 G37

N24 G32

NW12 G18

NW13 G22

W12 G20

W6 G13

W7 G15

W8

SW5 G8

SW4

W5 G8

W4

NW4

NW2

NW4

NW5 G8

NW3 G7

1 day ago

S4 G7

S6

S6 G9

SE6 G9

SE9

E7 G10

SE11

SE9

SE7

SE7

SE11 G14

SE11

SE10 G13

E11

SE9 G12

SE11 G14

SE11

E11

E9

E12

SE7

E10

E13

NE12 G16

2 days ago

SW5

SW7 G11

SW7 G13

S7 G10

S11 G16

S13 G16

W9 G13

NE7

S6

S8 G11

S10

S8

S8 G11

S8 G12

SW6 G10

SW6 G9

SW6 G9

SW5

SW3 G7

S6 G9

SW5

S3

S7

S5

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Charleston Executive Airport, SC	17 mi	71 min	WNW 6	9.00 mi	Fair	79°F	73°F	84%	1015.6 hPa
Beaufort County Airport, SC	22 mi	71 min	N 0	5.00 mi	Fog/Mist	72°F	71°F	100%	1015.6 hPa
Beaufort, Marine Corps Air Station, SC	24 mi	70 min	NNE 3	10.00 mi	Overcast	73°F	71°F	94%	1015.5 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)

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10 PM

11 PM

12 AM

1 AM

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3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

Last 24hr

NE10 G18

E12 G17

NE9

N10

E17 G24

NE19 G27

NE19

NE22 G29

N13 G26

W21

W13 G22

W12 G19

W11 G16

W11 G18

W6

S8

SW3

Calm

Calm

Calm

Calm

NW6

NW5

W4

1 day ago

4

SE4

SE5

SE8

SE9

SE7 G12

6 G17

SE7

SE6

SE6

SE7

E6 G11

E4

E6

E4

E4

E4

E5

E5

E7

Calm

Calm

E5

NE7

2 days ago

SW5

SW7 G13

S9

S9

S12

S13

S4

S7

SE4

S8

S8

S6

S8

S8

S7

S6

S6

S5

S7

S6

S3

Calm

S6

S6

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Tide / Current Tables for Steamboat Landing, Steamboat Creek, South Carolina

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Tide / Current Tables for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina

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Weather Map

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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Charleston, SC (10,2,3,4)

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Ground Weather Radar Station Charleston, SC

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