New “Destructive” Severe Thunderstorm Warning category to trigger Wireless Emergency Alerts on mobile phones

July 22, 2021 – Severe thunderstorms can be life-threatening, but not all severe storms are the same. Hazardous conditions range from tornadoes, large hail storms, and widespread straight-line winds called derechoes, to cloud-to-ground lightning and flash flooding. Starting August 2, the National Weather Service will better convey the severity and potential impacts from thunderstorm winds and … Continue reading New “Destructive” Severe Thunderstorm Warning category to trigger Wireless Emergency Alerts on mobile phones