textproduct: Charleston

WHAT HAS CHANGED

All sections have been updated.

KEY MESSAGES

- 1) The coastal flood risk will linger into early next week.

- 2) Rising temperatures through Tuesday, remaining above normal next week.

DISCUSSION

KEY MESSAGE 1: The coastal flood risk will linger into early next week.

As a nor'easter churns offshore of the Eastern Seaboard, steady west- northwesterly flow will continue across the Lowcountry and southeast Georgia. Even though this will create a less favorable environment for coastal flooding, the astro tide will still be elevated given the recent full moon. Thus, still expect to see minor coastal flooding with each high tide cycle through early next week (esp. for the Charleston Harbor).

Charleston Harbor: With the ongoing environmental conditions and observed departures, tidal levels could reach ~7.3 to 7.4 ft MLLW in the Charleston Harbor during the 906 PM high tide this evening, then near ~7.1 ft MLLW during the 925 AM high tide Monday morning. A Coastal Flood Advisory remains in effect for Charleston and Coastal Colleton Counties through 11 PM as a result. Another Coastal Flood Advisory could eventually be needed for the Monday morning high tide cycle.

Fort Pulaski: While tides will remain elevated at Ft Pulaski, they should remain below minor flooding, peaking around 9 to 9.1 ft MLLW through the early part of this week.

KEY MESSAGE 2: Rising temperatures through Tuesday, remaining above normal next week.

Temperatures will continue to rise to start off the week as upper level ridging strengthens, with the coastal trough pushing further inland and up the coast each day as a surface high pressure moves into the Ohio River Valley. As a result, Monday will be a touch warmer as the mid-80s build northwards and upper 80s become likely south of the I-16 corridor, with widespread mid 80s to lower 90s on Tuesday. Higher PWATs build into the region Thursday into Friday as a subtropical high pressure develops off to our north, though precipitation chances remain low due to the ridge axis sliding overhead during that period. Better chances for rain come as the ridge axis slides eastwards later this week into the weekend.

AVIATION /00Z MONDAY THROUGH FRIDAY/

VFR conditions are expected to prevail at CHS/JZI/SAV terminals through 00Z Tuesday.

Extended Aviation Outlook: VFR.

MARINE

Through Thursday: No marine concerns expected as surface high pressure becomes the dominant feature across the local waters. As a high pressure shifts northeastwards of the area on Tuesday, a weak coastal sea breeze will develop in the afternoon hours, leading to marginally breezy conditions along the coast.

CHS WATCHES/WARNINGS/ADVISORIES

GA...None. SC...Coastal Flood Advisory until 11 PM EDT this evening for SCZ149- 150. MARINE...None.