National Weather Service United States Department of Commerce

Winter Storm Moving Across the West; Impacting the Eastern U.S. This Weekend

Heavy snow will shift from the mountains of the West today into the Upper Midwest and Great Lakes this weekend while an icy mix spreads from the Appalachians into the Northeast U.S. Further south on Saturday, severe thunderstorms will be possible over the lower Mississippi Valley while excessive rainfall may bring flash and river flooding to the mid Mississippi and Ohio Valleys. Read More >

Estimating Hail Size

Hail Diameter Size
(Inches)
Description
1/4 Pea Size
1/2 Mothball, peanut, USB Plug
3/4 Penny Size
7/8 Nickel Size
1 Quarter Size
1 1/4 Half Dollar Size
1 1/2 Ping Pong Ball Size
1 3/4 Golf Ball Size
2 Lime or medium sized Hen Egg
2 1/2 Tennis Ball Size
2 3/4 Baseball Size
3 Large Apple
4 Softball
4 1/2 Grapefruit
> 4 1/2 Probably a record sized hailstone for Idaho or Oregon
Freeze it, Measure it, Notify the NWS.