1 advisory is in effect for Charleston County, SC. The most serious is a frost advisory.
Since 2016 the National Weather Service has issued about 1,786 alerts that included Charleston County, roughly 179 a year. The most common is the coastal flood advisory (599 from 2016 to 2025). The last tornado warning was issued on June 10, 2025. 61 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EST SUNDAY
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 1 AM to 9 AM EST Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
What to do: Take steps now to protect tender plants from the cold.
| Issued | Alert | Area |
|---|---|---|
| Nov 14, 1:17 PM EST | Frost Advisory | Long; Inland Bryan; Inland Chatham; Inland Liberty; Inland McIntosh; Beaufort; Coastal Colleton; Charleston; Tidal Berkeley |
Alert events that included Charleston County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Coastal Flood Advisory | 599 | 54 | November 1, 2026 |
| Flood Advisory | 417 | 23 | October 11, 2026 |
| Severe Thunderstorm Warning | 167 | 22 | September 6, 2026 |
| Dense Fog Advisory | 78 | 9 | October 30, 2026 |
| Heat Advisory | 64 | 19 | September 5, 2026 |
| Tornado Warning | 49 | 0 | June 10, 2025 |
| Wind Advisory | 44 | 3 | March 28, 2026 |
| Coastal Flood Warning | 43 | 3 | October 26, 2026 |
| Flood Warning | 43 | 2 | August 23, 2026 |
| Tornado Watch | 41 | 1 | October 10, 2026 |
| Flash Flood Warning | 38 | 12 | October 10, 2026 |
| Flood Watch | 37 | 3 | October 10, 2026 |
| Severe Thunderstorm Watch | 24 | 2 | September 5, 2026 |
| Freeze Warning | 20 | 1 | March 18, 2026 |
| Tropical Storm Warning | 17 | 0 | September 25, 2024 |
| Cold Weather Advisory | 17 | 3 | February 23, 2026 |
| Tropical Storm Watch | 14 | 0 | July 4, 2025 |
| Frost Advisory | 13 | 0 | March 3, 2025 |
| Freeze Watch | 13 | 0 | November 11, 2025 |
| Hurricane Watch | 7 | 0 | August 29, 2023 |
| Storm Surge Warning | 6 | 0 | August 4, 2024 |
| Extreme Heat Warning | 6 | 7 | August 18, 2026 |
| Winter Weather Advisory | 5 | 2 | February 1, 2026 |
| Hurricane Warning | 4 | 0 | September 29, 2022 |
| Extreme Heat Watch | 4 | 5 | August 18, 2026 |
| Fire Weather Watch | 4 | 1 | March 28, 2026 |
| Red Flag Warning | 4 | 2 | March 28, 2026 |
| Winter Storm Watch | 3 | 1 | January 31, 2026 |
| Winter Storm Warning | 2 | 1 | January 31, 2026 |
| High Wind Watch | 1 | 0 | January 9, 2024 |
| High Wind Warning | 1 | 0 | January 9, 2024 |
| Extreme Cold Watch | 1 | 1 | February 1, 2026 |
| Extreme Cold Warning | 0 | 1 | January 31, 2026 |
61 tornadoes have been recorded in Charleston County since 1950, injuring 17 people. That ranks 2 of 46 counties in South Carolina. The most recent was on September 27, 2024 (rated EF1).
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| September 11, 1960 | F3 | Charleston County | 8.8 mi | 100 yd | 0 | 10 |
| May 11, 2008 | EF2 | Charleston County | 12 mi | 1,760 yd | 0 | 0 |
| September 24, 2015 | EF2 | Charleston County | 6.9 mi | 880 yd | 0 | 0 |
| August 29, 1964 | F2 | Charleston County | 1 mi | 67 yd | 0 | 2 |
| April 26, 2006 | F1 | Berkeley County | 10 mi | 200 yd | 0 | 0 |
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| September 27, 2024 | EF1 | Charleston County | 2.5 mi | 150 yd | 0 | 0 |
| September 27, 2024 | EF0 | Charleston County | 2 mi | 90 yd | 0 | 0 |
| September 27, 2024 | EF0 | Charleston County | 2.1 mi | 125 yd | 0 | 0 |
| September 27, 2024 | EF0 | Charleston County | 2 mi | 90 yd | 0 | 0 |
| August 5, 2024 | EF1 | Charleston County | 0.7 mi | 75 yd | 0 | 0 |