Coastal Flood Watch Monday Morning / Coastal Flooding at High Tide Likely Early This Week

A coastal flood watch is in effect Monday morning along the upper Georgia and low South Carolina coast.
A coastal flood watch is in effect Monday morning along the upper Georgia and low South Carolina coast.

Low-lying coastal areas of South Carolina and Georgia will continue to see the risk of coastal flooding during times of high tide through at least early this week.

It’s all due to the combination of astronomical tides and northeast winds which will push water levels high enough that coastal flooding will be likely.

With this in mind… A COASTAL FLOOD ADVISORY is in effect from 7pm to 11pm this evening for low-lying coastal areas of southeast Georgia and South Carolina. Saltwater flooding will be possible 1 to 2 hours before and after high tide. High tide will occur this evening at Fort Pulaski at 9:03 pm and is expected to peak around 9.1 and 9.3 feet. The threshold where flooding begins is 9.2 feet. These levels are comparable to yesterday evenings high tide. High tide in Beaufort is at 10:00 pm. Inundation of saltwater in and near low-lying coastal areas could result in some roads becoming impassable and flooding of properties.

A COASTAL FLOOD WATCH is in effect Monday morning for low-lying coastal areas of southeast Georgia and South Carolina. Saltwater flooding will be possible 1 to 2 hours before and after high tide. High tide will occur Monday morning at Fort Pulaski at 9:25 am and is expected to peak around 9.7 and 10.0 feet. The threshold where flooding begins is 9.2 feet. These levels could produce moderate to possibly even major flooding. High tide in Beaufort is at 10:27 am. Inundation of saltwater in and near low-lying coastal areas could result in some roads becoming impassable and flooding of properties.

Given the compromised dune structure after hurricane Matthew… combined with the ongoing perigean tides… elevated high tides will likely continue through at least early parts of the upcoming week. With that in mind… coastal flooding at times of high tide and coastal flood advisories / watches or even warnings are likely to continue during this time period as well.

The morning high tides will be higher than the evening tides… so the morning high tides are the most likely ones to produce the highest coastal flooding.

The impacts could be greater too.  Due to hurricane Matthew, the coast has changed a lot. This means we have to even re-calibrate our coastal flood thresholds.  The protective dune structure and the tree lines of many barrier islands have been severely compromised by Hurricane Matthew.

There is a chance roads could be closed, including Highway 80 to Tybee.

WSAV and the national weather service needs your flood reports too.  Because the coast has changed so much because of Matthew, we need updates from the public.  Please send your flood reports to pics@wsav.com.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s