Monday Weekly Weather Summary: A Winter Pattern in May

Good morning. So it has gotten quite interesting weather wise over the last several days. Many of you may be thinking what is up with this chilly May weather? If fact, as you wake up this morning it is in the high 30's to low 40's in many areas and highs will not break the 50's for most folks today.

This chilly pattern will continue all week and some mountain areas up in New England may even see some snowfall! So what is going on?

Well, we actually do have a winter pattern in May. Below you can see the upper air pattern...

Notice the red area over Greenland. That is called a -NAO pattern. It traps the jet stream underneath it and what happens is colder air is forced to pool up under it. In winter, a pattern like this would be producing rounds of cold and snowy weather. Since it is May, we are just left with colder than normal temperatures and unsettled weather.

Today, temperatures will be below freezing at 5000ft.....

We have a strong May sun, so the surface still warms up to the 50's but still that is very chilly for this time of year. 

Up in the mountains you can see snow showers developing in spots...

So when will this pattern break? We should start to see some relief by mid month, but I have a feeling its more around Memorial Day where any true summer like weather takes hold. 

Thats all for now.