Memorial Day Weekend Weather

CanisLupusArctos · 05-21-2008, 11:27 AM

The Canadian influence on our weather has been strong this spring. With only 10 days left in the month, it is averaging about 4 degrees below last May.

This abnormally cold air has caused some very October-like weather around here lately, and is causing this showery pattern we have now. A few times this week, the lake water temp even returned to its winter pattern of having colder water on top than underneath, thanks to the dry Canadian air mass.

Mount Washington has had snow this week, and was at 30 degrees this morning. Each morning this week we've had morning sun, which has heated the earth, which has heated the air above it. That sun-heated air has found itself very buoyant in the otherwise-cold air mass. It rises every noontime, forms a bunch of clouds up there, they grow until they can't hold their moisture anymore, and it gets showery until sunset.

This cold air has had an equal opposite reaction in the western half of the country where a big bubble of abnormally warm air has come north. This spring's continued conga-line of strong cold fronts has been ramming this warm air back to where it came from (we hear about severe thunderstorms and tornadoes every time that happens.)

Despite this repeated barrage from Canada, the computer models are saying a piece of the hot air is going to stream up here for the Memorial Day weekend.

Here is my early-guess forecast for weekend temps: 72 on Saturday and around 80 on both Sunday and Monday. When the weekend's all done, it looks like yet another cold front will cross the area and put the warm air back to where it came from.

The Winnipesaukee WeatherCenter site now has a page dedicated to the latest forecasts for this area. Link is in the upper right portion of the front page.

05-21-2008, 11:27 AM	#1
CanisLupusArctos Senior Member Join Date: Jan 2007 Location: Center Harbor Posts: 1,049 Thanks: 15 Thanked 472 Times in 107 Posts	Memorial Day Weekend Weather The Canadian influence on our weather has been strong this spring. With only 10 days left in the month, it is averaging about 4 degrees below last May. This abnormally cold air has caused some very October-like weather around here lately, and is causing this showery pattern we have now. A few times this week, the lake water temp even returned to its winter pattern of having colder water on top than underneath, thanks to the dry Canadian air mass. Mount Washington has had snow this week, and was at 30 degrees this morning. Each morning this week we've had morning sun, which has heated the earth, which has heated the air above it. That sun-heated air has found itself very buoyant in the otherwise-cold air mass. It rises every noontime, forms a bunch of clouds up there, they grow until they can't hold their moisture anymore, and it gets showery until sunset. This cold air has had an equal opposite reaction in the western half of the country where a big bubble of abnormally warm air has come north. This spring's continued conga-line of strong cold fronts has been ramming this warm air back to where it came from (we hear about severe thunderstorms and tornadoes every time that happens.) Despite this repeated barrage from Canada, the computer models are saying a piece of the hot air is going to stream up here for the Memorial Day weekend. Here is my early-guess forecast for weekend temps: 72 on Saturday and around 80 on both Sunday and Monday. When the weekend's all done, it looks like yet another cold front will cross the area and put the warm air back to where it came from. The Winnipesaukee WeatherCenter site now has a page dedicated to the latest forecasts for this area. Link is in the upper right portion of the front page.