Alert archive / South Carolina / Special Marine Warnings in 2021

Special Marine Warning 12, NWS Charleston, SC

March 18, 2021

NWS Charleston, SC issued this special marine warning at Mar 18, 2021, 5:30 PM EDT. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 18, 2021, 5:30 PM EDT (21:30 UTC)
Expired: Mar 18, 2021, 6:30 PM EDT
In force: 60 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Hail: 0.0 in
Wind: 34.0 mph

What forecasters said that day

The local office's own words before this special marine warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, SC wrote its last area forecast discussion before this special marine warning went out at Mar 18, 3:50 PM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, Mar 18, 3:50 PM EDT, 1 hour 40 minutes before

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Hazardous weather outlook, Mar 18, 4:33 PM EDT, 57 minutes before

Hazardous Weather Outlook
National Weather Service Charleston SC
433 PM EDT Thu Mar 18 2021

SCZ045-052-192045-
Inland Berkeley-Tidal Berkeley-
433 PM EDT Thu Mar 18 2021

...TORNADO WATCH 40 IN EFFECT UNTIL 6 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

AMZ330-192045-
Charleston Harbor-
433 PM EDT Thu Mar 18 2021

...TORNADO WATCH 40 IN EFFECT UNTIL 6 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

AMZ350-352-354-192045-
Waters from South Santee River to Edisto Beach SC out 20 NM-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
433 PM EDT Thu Mar 18 2021

...TORNADO WATCH 40 IN EFFECT UNTIL 6 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Gales: Frequent gusts to gale force are possible Friday night
through the weekend. Gale Watches and Warnings could be needed.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

AMZ374-192045-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
433 PM EDT Thu Mar 18 2021

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Gales: Frequent gusts to gale force are possible Friday night
through the weekend. Gale Watches and Warnings could be needed.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

GAZ117-119-139-141-SCZ048-049-051-192045-
Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh-
Beaufort-Coastal Colleton-Coastal Jasper-
433 PM EDT Thu Mar 18 2021

...MODERATE RISK FOR RIP CURRENTS IN EFFECT THROUGH FRIDAY EVENING...

This Hazardous Weather Outlook is for southeast Georgia and
southeast South Carolina.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Moderate Risk for Rip Currents.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Moderate Risk for Rip Currents.

Coastal Hazards: An enhanced risk for rip currents is expected over
the weekend into early next week. In addition, breaking wave heights
of 5 feet or greater are possible this weekend. High Surf Advisories
could be needed.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

SCZ050-192045-
Charleston-
433 PM EDT Thu Mar 18 2021

...TORNADO WATCH 40 IN EFFECT UNTIL 6 PM EDT THIS EVENING...
...MODERATE RISK FOR RIP CURRENTS IN EFFECT THROUGH FRIDAY EVENING...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.
   Moderate Risk for Rip Currents.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Moderate Risk for Rip Currents.

Coastal Hazards: An enhanced risk for rip currents is expected over
the weekend into early next week. In addition, breaking wave heights
of 5 feet or greater are possible this weekend. High Surf Advisories
could be needed.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

GAZ087-088-099>101-114>116-118-137-138-140-SCZ040-042>044-047-192045-
Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans-
Inland Bryan-Inland Chatham-Long-Inland Liberty-Inland McIntosh-
Allendale-Hampton-Inland Colleton-Dorchester-Inland Jasper-
433 PM EDT Thu Mar 18 2021

This Hazardous Weather Outlook is for southeast Georgia and
southeast South Carolina.

.DAY ONE...Tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

In the hours before

Local storm report, Mar 18, 3:48 PM EDT, 1 hour 42 minutes before

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Local storm report, Mar 18, 4:10 PM EDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
410 PM EDT THU MAR 18 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0343 PM     NON-TSTM WND GST 2 ESE CHARLESTON        32.77N  79.91W
03/18/2021  M41 MPH          AMZ330             SC   MESONET

&&

EVENT NUMBER CHS2100065

CHS

Local storm report, Mar 18, 4:53 PM EDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
453 PM EDT THU MAR 18 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     MARINE TSTM WIND 4 ESE CHARLESTON        32.75N  79.87W
03/18/2021  M52 MPH          AMZ330             SC   MESONET

&&

EVENT NUMBER CHS2100066

CHS

Local storm report, Mar 18, 5:06 PM EDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
506 PM EDT THU MAR 18 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0449 PM     HEAVY RAIN       2 W MOUNT PLEASANT      32.79N  79.89W
03/18/2021  U0.00 INCH       CHARLESTON         SC   LAW ENFORCEMENT

            THE RIGHT LANE ON WEST COLEMAN BLVD AT GARLAND ROAD IS
            CLOSED DUE TO WATER ON THE ROAD.

&&

EVENT NUMBER CHS2100067

CHS

Local storm report, Mar 18, 5:28 PM EDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
528 PM EDT THU MAR 18 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0450 PM     HEAVY RAIN       6 ENE SULLIVANS ISLAND  32.78N  79.74W
03/18/2021  U0.00 INCH       AMZ350             SC   LAW ENFORCEMENT

            MULTIPLE STREETS ACROSS DOWNTOWN CHARLESTON WERE CLOSED
            DUE TO FLOODING, INCLUDING THE CANNON PARK AREA AND
            PORTIONS OF EAST BAY STREET.

&&

EVENT NUMBER CHS2100068

CHS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 6:11 AM EDT	Marine Dense Fog Advisory	CHS		4 hr
Mar 18, 2:55 PM EDT	Tornado Warning	CHS	Jasper	21 min
Mar 18, 4:08 PM EDT	Areal Flood Advisory	CHS	Charleston	52 min
Mar 18, 4:36 PM EDT	Special Marine Warning	CHS		54 min
Mar 18, 5:33 PM EDT	Special Marine Warning	CHS		24 min
Mar 18, 6:26 PM EDT	Special Marine Warning	CHS		64 min
Mar 18, 1:47 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Liberty, Long, Tattnall	43 min

Nearby

Special Marine Warnings in South Carolina, 2021 Every special marine warning 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.