Apr 24, 2015 9:29 PM
NH1 Weather Insider with Joe Joyce: April 25, 2015
NH1 CHIEF METEOROLOGIST
It's official! Ice Out on Lake Winnipesaukee was declared 4:34 Friday afternoon. Boating season is now officially underway! The last hold out was some lingering ice in Wolfeboro Bay. It seems to be the area on the Lake where the ice tends to last the longest every year. Dave Emerson of Emerson Aviation flew over the Lake today to confirm. Ice Out is declared when the ice melts enough to allow the M/S Mount Washington cruise ship to navigate between Alton Bay, Center Harbor, Weirs Beach, Meredith and Wolfeboro. They have been tracking the official Ice Out since 1887. Most Ice outs are declared in April. The latest was May 7th, 1887....the first year Ice out was declared. It must have been a cold winter!
Meanwhile, the mountains have been seeing snow the past few days! This a picture from Franconia Notch on Friday. You can see the summits covered in snow. Mount Washington has recorded over 8" of snow in the past 48 hours, reporting mid-February conditions. Because of this recent snowfall there is a considerable/moderate Avalanche danger for Tuckerman's Ravine, Mount Washington and the Presidentials. It Please use extreme caution if you are planning on doing any mountain climbing or late season skiing in these areas to come with supplies and friends. It may be best to wait for another weekend if possible. More snow showers are likely Friday night into Saturday across these northern peaks of the White mountains
Meanwhile, it is business as usual down in the lower elevations with morning sunshine, afternoon clouds and seasonably cool temperatures for late April. Highs were only in the 40's Friday! Saturday will see temps slightly warmer...but not by much! Highs will struggle to get to 50-55 by the afternoon as the clouds increase. Our weather will be controlled by a big upper level low supplying the cool air aloft and down at the ground. There are signs by the middle of next week the upper low will finally pull away and this will allow for days with more significant sunshine and some warmer temperatures. The Climate Prediction Center's 8-14 day forecast valid May 2nd-May 8th shows a much warmer pattern developing across the nation where it will suddenly become summer in a hurry. It won't take much to get some of that warmer air to shift eastward during the month of May. For now, keep the jacket hand as we still are feeling the lingering last moments of winter out there!