| None |
Threat
- No discernible threat to life and property; the probability
of tornadoes is less than 2%.
Minimum Action - Listen for forecast changes; review
tornado safety rules.
Potential Impact - None expected; strong wind gusts
may still occur. |
| Low |
Threat - An
elevated threat to life and property; a 2 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. |
Note: In all tropical cyclone situations, listen for possible
tornado watches; take cover immediately if a tornado warning is issued for
your area.
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.
|
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