INTENSITY SCALE
CALM
1–15
Beautiful SC day. Get outside.
MILD
16–30
Minor weather activity. No real concerns.
MODERATE
31–50
Noticeable weather. Stay weather-aware.
STRONG
51–70
Significant weather. Monitor alerts.
SEVERE
71–85
Dangerous conditions. Take action.
CATASTROPHIC
86–100+
Extreme threat. Follow all emergency orders.
METHODOLOGY
Every minute, we pull live data from the National Weather Service — active watches, warnings, and advisories statewide, plus current conditions from six representative SC locations. Each factor is weighted and combined into a single score from 1 to 100+.
Active Alerts
Tornado warnings, hurricane watches, flood advisories, and all NWS alerts are weighted by severity and urgency.
Temperature Extremes
Dangerous heat above 95°F or hard freezes below 32°F push the score higher.
Wind Speed
Sustained winds and gusts from six SC locations are factored in — from breezy to hurricane force.
Precipitation Chance
High probability of rain, snow, or severe storms adds to the intensity index.
Data from the National Weather Service.