Monday 9 AM
A storm moving through the upper Great Lakes is bringing milder air into the Northeast while generating gale-force winds on its south side. This video presents some forecast ideas for the week ahead.
A low pressure area that should form in the Gulf States and come part way up the East Coast by late Wednesday night may cause a swath of snow to develop. This preliminary sketch map shows what accumulations may result. One challenge at this point is determining how far up the coast the snow will actually advance. The NAM model has been especially bullish on more snow farther north.
Looking back on the weekend blizzard, Boston had its fifth-largest accumulation with 24.9 inches. Based on the water equivalent, the city of Boston received 17,099,216,640 pounds of snow on its 47 square miles. Portland, Maine, had its biggest snowfall ever. For awhile Saturday, the storm even looked like it had an eye.
This picture is part of a shot included in The Capital Weather Gang's blog about the storm for The Washington Post.
Many comparisons have been made between this storm and the Blizzard of '78 that hit the same area. For the Boston area, my opinion is that two major factors helped avert the degree to which people became trapped out on the roads. This was a huge problem in 1978, and was a problem on Long Island Friday evening. Factor one was the Massachusetts governor Deval Patrick's decision to announce in advance that there would be a ban on non-critical travel at midday on Friday. You cannot get stuck on a highway you're not on. The second factor was that the worst of the storm began later in the day than was the case in 1978. Factor one negated the importance of factor two.
The steering winds aloft are changing, and the next phase looks like it will feature a northwesterly flow of cooler air this weekend and much of next week.
It's going to be hot hazy and humid in the much of the Northeast today through Thursday. The recalescent, sudorific, canicular, pyrogenic frying heat gains our attention.
A line of persistent showers and thunderstorms stretched from Long Island Sound to Cape Cod. Some areas in this zone had more than 3 inches of rain this morning, and there can be highway flooding in localized heavy showers this afternoon and evening. This radar shows the rain zone just after 10 a.m. ET.
This map shows the predicted upper-air flow for tomorrow night. Our timing estimates suggest showers and some thunderstorms could affect the I-95 corridor from Portland and Boston to New York City (and perhaps Philadelphia) on Sunday.
For the start of this "Olympics of the Forest," the weather looks good, as forest we can tell. From DC to NYC, it looks sunny for at least the next two, tree days.
As moisture from former hurricane Delores moved northward, the dynamic changed, and thunderstorms broke out. This map shows the more than 300,000 strokes that occurred between early yesterday and early today.