We all have heard of a tornado, but what about the slang term "gustnado?"
A gustnado is a short-lived, ground-based swirling wind that can form on the leading edge of a severe thunderstorm.
Although the name comes from "gust front of a tornado," and a gustnado almost looks like a tornado, it is not considered to be one. A gustnado develops in a different way than a classic tornado does.
Very strong thunderstorms produce a powerful downward push of air called a downdraft. The downdraft winds then spread outward upon hitting the ground, causing a strong rush of wind at the surface. If there is enough instability, rotation may develop and a gustnado might form.
The gustnado spins upward from the ground, extending between 30 to 300 feet above the surface. However, the rotating column of air in a gustnado is not connected to the base of a cloud, making it different from tornado.
The average gustnado lasts a few seconds to a few minutes, like a tornado does, but is relatively weak and brief. They may be accompanied by rain, but mostly just toss dust and small debris into the air. Gustnadoes can sometimes reach wind speeds between 60 to 80 mph, resulting in significant damage, similar to that of an EF-0 or EF-1 tornado.
Easter Sunday will be a dry day across the Seattle area, but more showers and rain are ahead for the city.
After rain to start the Easter weekend, it will be sunny and warm on Sunday -- a nice end to the weekend.
Morning Easter activities should be fine, but a chance of showers and thunderstorms could impact any afternoon activities around Dallas.
There hasn't been any measurable precipitation in San Francisco since April 4.
Rain and thunderstorms spreading to the East on Tuesday will put the brakes on the warmup following Easter weekend.
Although spring may be in full swing, more than one-third of the Great Lakes remains covered in ice.
Sacramento, CA (1880)
7.24" of rain, heaviest in 24 hours.
Southeastern Ohio (1901)
Unusually heavy snow: Warren, OH, 35.5" of snow; Green Hill, OH, 28" fell in 36 hours.
Mississippi & Alabama (1920)
Tornado swarm killed 219.