Strong Winds - Severe Weather - Heavy Rains
December 1, 2006

An unseasonably mild air mass was in place across the region, temperatures were running a good 15-20 degrees above normal. Record high temperatures were set across the region on Thursday, November 30. A back-door cold front moved southward across the area late Thursday night and early Friday morning. This frontal boundary brought a shallow layer of cold air in, which made it as far south as Hudson, New York in Columbia County. Temperatures on the north side of the boundary fell into the mid 30s to lower 40s, except over the Berkshires where temperatures stayed in the 60s. The 18Z / 1 pm Albany sounding showed the depth of the cold / cooler air to be less than 1500 feet deep. This boundary lifted north Friday afternoon and evening as the surface low pressure system moved across western and northern New York. The associated strong cold front sweep across the area Friday evening with multiple lines of severe convection. Ahead of the cold front, strong southerly winds impacted the region, mainly across the Hudson Valley and western New England. A High Wind Warning was issued for the entire NWS Albany forecast area to address this high wind threat. Winds were strong enough to knock a tree onto a house in Ellenville, New York killing a man.

The mesoscale environment was very volatile. Portions of the area were under the favorable region of the upper level jet and the low level jet was very strong.

Upper level maps from the Storm Prediction:
12Z / 7 am December 1st & 00Z December 2nd / 7 pm December 1st

Numerous Urban and Small Stream Flood Advisories were issued for the very heavy rains associated with the line strong and severe thunderstorms moving across the area. Rainfall rates were up to an inch an hour with the convection.

As the low pressure system move northeastward into the Canadian Maritimes a strong westerly flow developed ushering much colder air into the region.

Heavy Rains & Strong Wind

Public Information Statements: Rainfall & Wind Gusts

24-hour Precipitation Map ending at 12Z / 7 am December 2nd

Severe Weather

Storm Prediction Center Outlook (Moderate Risk) issued 8 am December 1st
Map & Discussion

Severe Thunderstorm Watch & Tornado Watch

Local Storm Report (LSR) & Plot of Storm Reports for December 1st

Storm Survey - Rhinebeck NY