| Low |
Threat - An elevated threat to life and property; a 5 to 14% probability of tornadoes.
Minimum Action - Prepare for the likelihood of isolated to scattered tornadoes of EF-0 to EF-1 intensity.
Potential Impact - A low impact to communities within the specified area. Isolated to scattered locations may experience minor to moderate tornado damage. |
| Moderate |
Threat - A significant threat to life and property; a 15 to 29% probability of tornadoes.
Minimum Action - Prepare for the likelihood of scattered tornadoes of EF-0 to EF-1 intensity. However, the likelihood of an isolated EF-2 tornado is increasing.
Potential Impact - A moderate impact to communities within the specified area. Scattered locations may experience minor to moderate tornado damage. Some tornadoes may have longer damage tracks. |
| High |
Threat - A critical threat to life and property; a 30 to 44% probability of tornadoes.
Minimum Action - Prepare for the likelihood of scattered tornadoes with isolated tornadoes of EF-2 to EF-5 intensity.
Potential Impact - A high impact to communities within the specified area. Isolated locations may experience major tornado damage, among scattered locations of minor to moderate tornado damage. Some tornadoes may have longer damage tracks. |
| Extreme |
Threat - An extreme threat to life and property; a 45% probability (or greater) of tornadoes.
Minimum Action - Prepare for the likelihood of many tornadoes (even families) with scattered tornadoes of EF-2 to EF-5 intensity.
Potential Impact - An extreme impact to communities within the specified area. Scattered locations may experience major tornado damage, among many locations of minor to moderate tornado damage. Some tornadoes may have longer damage tracks. |
EF-0 Tornadoes — Weaker tornadoes on the Enhanced Fujita (EF) Scale causing minor damage. Damage to chimneys, porches, screen houses, and lighter-weight outbuildings; a few downed trees and power lines; large signs blown over. Tornado wind speeds of 65 to 85 mph.
EF-1 Tornadoes — Moderate tornadoes on the Enhanced Fujita (EF) Scale causing moderate damage. Mobile homes moved off foundations or overturned; roof surfaces peeled off buildings; cars blown off roads; several large trees downed and some power outages. Tornado wind speeds of 86 to 110 mph.
EF-2 to EF-5 Tornadoes — Strong to violent tornadoes on the Enhanced Fujita (EF) Scale causing major damage (up to complete destruction). Mobile homes completely demolished; numerous large trees snapped off, totally uprooted, or debarked; small debris objects (lawn mowers, smaller sections of roofs) become airborne missiles. Significant power outages over larger areas. Structural damage to sturdy buildings, especially roof and wall failures. In the worst situations, well-constructed walls fail or are even removed; large debris objects (cars, larger sections of roofs) become airborne missiles causing further structural failures. Tornado wind speeds 111 mph or greater; in the worst situations 200 mph or greater.
|
weather.gov 
RSS Feeds
