what are the conditions when a snowstorm can be officially called a blizzard? wind speed temp, snow rate
2007-02-25 04:09:41 · 4 answers · asked by crazydrummer347 2 in Science & Mathematics ➔ Weather
AMERICA: Winds in excess of 30 knots / 35 mph / 56 kmh, visibility less than 440 yards (quarter of a mile), falling snow, minimum of three hours duration, no specific snow rate or temp.
CANADA: Winds in excess of 22 knots / 25 mph / 40 kmh, visibility less than 1 kilometer (0.6 mile) , falling snow, no specific duration, snow rate or temp.
EUROPE: Generally - falling or wind driven snow with visibility less than 1 kilometer (0.6 mile).
2007-02-25 08:32:33 · answer #1 · answered by Trevor 7 · 0⤊ 0⤋
Winds over 35 mph.
Falls 6-12 inches
Temperatures have to be in the 20's
Snow rates near 2 inch an hour
2007-02-25 12:37:07 · answer #2 · answered by Justin 6 · 0⤊ 0⤋
I believe the weather office calls a blizzard when the temp is 20 degrees F or less and the wind speed is 20 mph or more and there is a visibility of less than an eighth of a mile
2007-02-25 12:17:58 · answer #3 · answered by Tom M 2 · 0⤊ 0⤋
A snowstorm is heavy snowfall accompanied by wind.
A blizzard is a furious storm of snow and wind.
2007-02-25 12:22:00 · answer #4 · answered by lanisoderberg69 4 · 0⤊ 0⤋