A question meteorologist get asked all the time during the cold winter months is "can it ever be too cold to snow"? Well, the short answer is no.
The ingredients for snow are:
1. A temperature profile that allows snow to reach the surface
2. Saturated air
3. Enough lifting of that saturated air to allow snow to develop aloft and fall to reach the surface
The phrase "it's too cold to snow" probably originated as a misapplication of the relationship between temperature and the maximum amount of water vapor that can be in the air. When temperature decreases, the maximum capacity of water vapor that can be in the air decreases. Therefore, the colder it gets the less water vapor there will be in the air.
Most heavy snowfalls happen with relatively warm air temperatures near the ground -- usually at 15 degrees F or above. When the temperature drops into the single digits, or below zero, heavy snow is unlikely. That's not because it's too cold, but because its too dry. When temperatures are that low, the air's capacity for water vapor becomes very small.
Experts say only at absolute zero would snow become impossible. Along with everything else.
The Balkan Peninsula will get a taste of summer through the midweek.
The threat for potentially damaging thunderstorms will shift eastward across Europe through midweek.
Parts of this week will feel more like summer across the Midwest and Northeast with the warmest days of 2015 so far.
Wind, seas and surf will build in advance of what could potentially become the first tropical system of 2015 along the southeastern Atlantic coast of the United States this week.
Daily episodes of severe thunderstorms and flooding downpours will impact the Plains this week, possibly lingering into the weekend.
Severe winter weather played a major role in paltry U.S. economic growth in the first quarter of 2015, but hopes are high for an increase in spring and summer sales in regions that were gripped by a long winter.
Moscow, Russia (1987)
Excess pollen caused rain to turn green in some parts of the city.
Chesnee, SC (1989)
A 700-yard-wide tornado lifts a 1,000 pound bale of hay and carries it for five miles. Two people killed by the storm.
Fallon, NV (1995)
1.92" of rain (4th-5th)... about 40% of their normal annual rainfall.