Alert archive / South Carolina / Coastal Flood Statements in 2021

Coastal Flood Statement 4, NWS Charleston, SC

March 30, 2021

NWS Charleston, SC issued this coastal flood statement at Mar 30, 2021, 9:08 PM EDT. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Mar 30, 2021, 9:08 PM EDT (01:08 UTC)
Expired: Mar 31, 2021, 12:00 AM EDT
In force: 3 hr
Issued by: NWS Charleston, SC

The text

As transmitted.

335 
WHUS42 KCHS 310108
CFWCHS

Coastal Hazard Message
National Weather Service Charleston SC
908 PM EDT Tue Mar 30 2021

SCZ050-310400-
/O.NEW.KCHS.CF.S.0004.210331T0108Z-210331T0400Z/
Charleston-
908 PM EDT Tue Mar 30 2021

* WHAT...Little to no inundation above ground level is expected
  along shorelines, tidal waterways and in downtown Charleston (as
  tides peak around 6.9 to 7.0 feet Mean Lower Low Water at 
  Charleston).

* WHERE...Charleston County.

* WHEN...Until midnight EDT tonight.

* IMPACTS...Some water on low lying roads and property.

* ADDITIONAL DETAILS...High tide will occur around 10:30 PM at
  Charleston. Brief and very minor salt water flooding will be
  possible in downtown Charleston around 15-30 minutes before and
  after high tide. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

Time of high total tides are approximate to the nearest hour.

Charleston Harbor SC
MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 30/10 AM     6.5        0.7        0.6       N/A      None    
 30/10 PM     6.9        1.1        0.4       N/A      None    
 31/11 AM     6.1        0.3        0.4       N/A      None    
 31/11 PM     6.8        1.0        0.4       N/A      None    
 01/12 PM     4.7       -1.1       -0.6       N/A      None    
 02/12 AM     6.4        0.6        0.2       N/A      None

&&

$$

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 31, 3:17 AM EDT	Small Craft Advisory	CHS		65 hr
Mar 31, 11:32 AM EDT	Marine Dense Fog Advisory	CHS		6 hr
Mar 31, 2:05 PM EDT	Small Craft Advisory	CHS		6 hr
Mar 31, 4:04 PM EDT	Special Weather Statement	CHS	Allendale	26 min
Mar 31, 4:26 PM EDT	Special Weather Statement	CHS	Allendale	34 min
Mar 31, 4:57 PM EDT	Special Weather Statement	CHS	Dorchester	33 min
Mar 31, 5:32 PM EDT	Severe Thunderstorm Warning	CHS	Colleton, Dorchester	58 min
Mar 31, 5:58 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Colleton, Dorchester	62 min
Mar 31, 6:37 PM EDT	Special Weather Statement	CHS	Berkeley	23 min
Mar 31, 7:34 PM EDT	Special Weather Statement	CHS	Berkeley	26 min
Mar 31, 7:37 PM EDT	Special Weather Statement	CHS	Colleton	23 min
Mar 31, 7:53 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston	67 min
Mar 31, 7:54 PM EDT	Severe Thunderstorm Warning	CHS	Charleston, Colleton, Dorchester	66 min

Nearby

Coastal Flood Statements in South Carolina, 2021 Every coastal flood statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.