As we continue to speed through April, the US pattern remains largely the same. Bowling ball lows crossing the country with warm, humid ahead and cool, dry behind.

As pointed out in my last two videos, there appears to have a hint at a late season frost or even freeze deep into the Ohio and Tennessee Valley. Perhaps I’m looking into this too much.

The more recent runs show more in the way of cut off lows but towards day 10 off the GEFS (ensemble), there’s connection between building chill over Canada and a passing low which pulls down some pretty chilly air for the time of year.

A little food for thought…

Note, quite the change from the past 18 or so months with cooler than normal North Pacific and around Baja California.

This could lead to a cooler, wetter summer for Alaska, perhaps hotter for California and West. MUCH more on this coming up as I prepare for my 2017 US summer forecast which is due for release on May 1.

Watch today’s video.