Chester, SC Warnings, Watches and Advisories
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Chester.
Use the Radar Maps link provided to understand the trajectory of a storm.
NWS Active Alerts for SC - Map View
Extreme Heat Warning
Columbus; Inland Pender; Coastal Pender; Inland New Hanover; Coastal New Hanover; Inland Brunswick; Coastal Brunswick; Williamsburg; Coastal Horry; Inland Georgetown; Coastal Georgetown; Central Horry; Northern Horry
Extreme Heat Warning issued August 18 at 2:35AM EDT until August 18 at 8:00PM EDT by NWS Wilmington NC
* WHAT...Dangerously hot conditions with heat index values up to 113 expected. * WHERE...Portions of southeast North Carolina and northeast South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Severe
Likely
Expected
August 18th, 2026 02:35:00 am EDT
August 18th, 2026 02:35:00 am EDT
August 18th, 2026 08:00:00 pm EDT
Heat Advisory
Robeson; Bladen; Marlboro; Darlington; Dillon; Florence; Marion
Heat Advisory issued August 18 at 2:35AM EDT until August 18 at 8:00PM EDT by NWS Wilmington NC
* WHAT...Heat index values up to 109 expected. * WHERE...In North Carolina, Bladen and Robeson Counties. In South Carolina, Darlington, Dillon, Florence, Marion, and Marlboro Counties. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Moderate
Likely
Expected
August 18th, 2026 02:35:00 am EDT
August 18th, 2026 02:35:00 am EDT
August 18th, 2026 08:00:00 pm EDT
Extreme Heat Warning
Effingham; Inland Bryan; Coastal Bryan; Inland Chatham; Coastal Chatham; Inland Liberty; Coastal Liberty; Inland McIntosh; Coastal McIntosh; Dorchester; Inland Berkeley; Inland Jasper; Beaufort; Coastal Colleton; Charleston; Coastal Jasper; Tidal Berkeley
Extreme Heat Warning issued August 18 at 2:14AM EDT until August 18 at 8:00PM EDT by NWS Charleston SC
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 113 to 119 expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Isolated showers and thunderstorms during the afternoon hours could provide relief to a few areas.
Severe
Likely
Expected
August 18th, 2026 02:14:00 am EDT
August 18th, 2026 02:14:00 am EDT
August 18th, 2026 10:15:00 am EDT
Heat Advisory
Jenkins; Screven; Candler; Bulloch; Tattnall; Evans; Long; Allendale; Hampton; Inland Colleton
Heat Advisory issued August 18 at 2:14AM EDT until August 18 at 8:00PM EDT by NWS Charleston SC
* WHAT...Heat index values up to 108 to 112 expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Isolated showers and thunderstorms during the afternoon hours could provide relief in some areas.
Moderate
Likely
Expected
August 18th, 2026 02:14:00 am EDT
August 18th, 2026 02:14:00 am EDT
August 18th, 2026 10:15:00 am EDT
Heat Advisory
Columbia; Richmond; Burke; Chesterfield; Kershaw; Lexington; Richland; Lee; Aiken; Sumter; Barnwell; Calhoun; Clarendon; Bamberg; Northwestern Orangeburg; Central Orangeburg; Southeastern Orangeburg
Heat Advisory issued August 18 at 1:13AM EDT until August 18 at 8:00PM EDT by NWS Columbia SC
* WHAT...Heat index values up to 110 expected. * WHERE...Portions of east central Georgia and central South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Moderate
Likely
Expected
August 18th, 2026 01:13:00 am EDT
August 18th, 2026 01:13:00 am EDT
August 18th, 2026 03:00:00 pm EDT
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.
Disclaimer and Conditions of Use
This information is provided AS IS and strictly for recreational, educational, and informational purposes only; we disclaim liability of any kind whatsoever, including, without limitation, liability for quality, performance, merchantability and fitness for a particular purpose arising out of the use, or inability to use the data. The information may be inaccurate or incomplete based on how well the corresponding weather station successfully or unsuccessfully reported or recorded it with the instruments which measured the weather at the time; including gaps between hours or even days. Specifically, LocalConditions.com and this data, as presented, may not and should not be used as a reference for any reason relating to legal proceedings, insurance claims, recovery, loss prevention, making predictions, or critical decisions. Lastly, the weather station may be miles away from the actual area of interest. This data may not be leeched or republished.
Currently
 |
77°F |
29.87 inHg.
Barometer 83%
Humidity N 7.2 mph Wind |
| Overcast | ||