Hey, there! Log in / Register

Ah, New England: One day it's 70, the next day, snowflakes come down

Yes, there was a touch of snow in the air this morning, especially along the South Shore. Aaron Perry at NBC Boston explains why, although, to be honest, if you don't have a degree in meteorology, you might not have a clue what he wrote. But here's a radar image of the flurries.

Neighborhoods: 
Topics: 
Free tagging: 
Ad:

Comments

70's to snow within ~15 hours has to be the most new england thing i've experienced in a long time.

I'm no meteorologist, but a bit of a weather nerd. Anyone who knows more can correct my mistakes below. :)

1) -8°C to -11°C layer at 950-960mb layer

Some really freaking cold air not that far above.

2) Ocean waters in the low 40s

Source of moisture.

3) Steep low-level lapse rates

Rapid change in temperature with change in altitude (see #1).

4) Salt nucleation coupled with ESE fetch

a) Moisture has to condense onto something to form precipitation. In this case, salt.
b) Wind sending moisture (see #2) in our direction.

Ocean-effect snow.

The same as lake-effect snow, but...you know, the ocean.

up
21

My snow was from The Great Blue Hill.
Mattapan Square.

Cold, but not at the "really freaking" point yet. At least for here :-)

My relative measures of temperature get all screwed up when we have a couple of days in the 70s in January. :)

Could've fooled me, I gleaned more from your comment than most local tv weather forecasts.

Don't be so hard yourself.