Major Severe Weather Outbreak
Monday June 6, 2005

The first true summer like air mass of the season migrated into the Northeast over the weekend preceding this severe weather outbreak.  Temperatures climbed into the 80s and dewpoint temperatures (dewpoints represent the amount of moisture in the air) climbed into the low 60s by Sunday the 5th.  A backdoor cold front (A front that slips down the eastern New England coast, bringing chilly marine air into the Northeast from an easterly direction) moved into western New England and stalled by the early morning of Monday the 6th.  The chilly air to the east of the front (temperatures in the 50s at Boston) contrasting with the very warm and humid air over eastern New York, caused the pressure gradient to increase over eastern New York and western New England resulting in the development of a strong south to southeast flow of air over the region.  The strengthening flow served to increase the warmth and especially the moisture west of the front over the Hudson valley and Capital Region, while locking in the colder air to the east of the front in New England.    Temperatures soared into the upper 80s with dewpoint temperatures rising to between 65 and 70 degrees.   A moderate wind flow existed aloft out of the west creating a favorable wind shear environment, supportive of severe thunderstorms, and providing the trigger mechanism to set them off.

Severe weather with this event broke out in two parts.  

Part I was composed of rather isolated supercell type severe t-storms that formed in a broken line extending from the Adirondacks south into Saratoga county.  A tornado warning was issued on the Saratoga county storm at 1:14pm as rotation was evident on Doppler radar.  The storm produced wind damage but no tornado.  These scattered t-storms developed early in the afternoon out ahead of the main event that composed part II, and the more significant part of the outbreak. 

The trigger for the main event appeared to be a mid level circulation left over from a complex of t-storms the day before over the Midwest.   T-storms initiated on this mid level swirl over western Pennsylvania during the morning and intensified into a highly organized complex that accelerated east sweeping through every county in eastern New York and western New England during the mid to late afternoon hours.  The t-storm complex produced widespread damaging straight line winds and frequent lightning.  Wind damage with the squall line was reported in every county in the WRGB coverage area as it moved through. Rainfall was torrential, but only lasted a short time at any one location as the system was moving at between 30 and 40 mph to the east-northeast.  Therefore rainfall amounts generally averaged less than 1/2" in most locations and flooding did not occur.  The only exceptions to the lighter rainfall amounts were the few communities in the Adirondacks and into Saratoga, Schoharie, and Washington counties that were affected by the scattered T-Storms from round #1.  In those locations, such as Wilton, and Mechanicville in Saratoga county, Jefferson in Schoharie county, and Lake Luzerne in Warren county, rainfall amounts averaged 1"-2".

The squall line was a prolific lightning producer.  A   few of the stronger cells within the main squall line at its height produced up to 400 lightning strikes per minute.   A severe T-storm watch was initially issued by the Storm Prediction Center to cover this event but was upgraded to a tornado watch which was in effect until early in the evening.  No tornadoes, however, were found to have occurred with this outbreak of severe t-storms.  

The table lists the reported severe weather occurrences and damage for the June 6, 2005 severe weather outbreak

Town County Severe Weather/Damage Report Time Of Severe Weather
Indian Lake Hamilton T-Storm wind damage, Trees Down 12:52pm
Galway Saratoga Hail: 3/4" diameter 1:12pm
Lake Luzerne Warren T-Storm wind damage, Trees Down 1:29pm
Ballston Center Saratoga T-Storm wind damage, Trees Down 1:30pm
Gilbertsville Otsego 80 mph wind gust, many trees down 1:48pm
Queensbury Warren T-Storm wind damage, Trees Down 1:52pm
Saratoga Springs Saratoga Hail: 3/4" diameter 2:00pm
Milford Otsego T-Storm wind damage, metal roof pulled off building 2:08pm
Laurens Otsego T-Storm wind damage, Trees and Wires Down 2:08pm
Poland Herkimer T-Storm wind damage, Trees Down 2:15pm
Salisbury Center Herkimer T-Storm wind damage, Tree Down 2:15pm
Jefferson Schoharie T-Storm wind damage & Hail, Trees & Wires Down 2:26pm
Delhi Delaware T-Storm wind damage, trees down county-wide 2:29pm
Mindenville Montgomery Trees and power lines down 2:37pm
Canajoharie Montgomery Numerous trees and power lines down 2:37pm
Mayfield Fulton T-Storm wind damage, trees and lines down 2:40pm
Fort Ann Washington T-Storm wind damage 2:44pm
Greenwich Washington Hail: 3/4" diameter 2:44pm
Glens Falls Warren T-Storm wind damage, trees down 3:00pm
Durham Greene T-Storm wind damage, trees and wires down 3:08pm
West Rupert, VT Bennington, VT Hail: 1" diameter 3:10pm
Gloversville Fulton Trees and lines down, county wide 3:10pm
Palatine Bridge Montgomery T-Storm wind damage, trees down 3:15pm
North Blenheim Schoharie Roof off of a home, trees down 3:15pm
Dorset, VT Bennington, VT Hail: 1" diameter 3:28pm
Albany Albany T-Storm wind damage, trees down 3:29pm
Olivebridge Ulster T-Storm wind damage, trees down 3:30pm
Rensselaer Rensselaer T-Storm wind damage, trees down 3:30pm
Saratoga Springs Saratoga Hail: 1" diameter 3:31pm
East Greenbush Rensselaer T-Storm wind damage 3:35pm
Lake Pleasant Hamilton T-Storm wind damage, trees down 3:38pm
Catskill Greene T-Storm wind damage, trees down county wide 3:40pm
Easton Washington Hail: 3/4" diameter 3:42pm
Kingston Ulster T-Storm wind damage, trees down 3:43pm
Menands Albany T-Storm wind damage, trees down 3:45pm
Cambridge Washington Hail: 1" diameter 3:47pm
Averill Park Rensselaer Hail: 0.88" diameter 3:51pm
Poughkeepsie Ulster T-Storm wind damage, county wide 4:00pm
Shaftsbury, VT Bennington, VT T-Storm wind damage, trees down on Route 7A 4:06pm
Adams, MA Berkshire, MA T-Storm wind damage, 14" diameter tree down 4:25pm
North Adams, MA Berkshire, MA T-Storm wind damage, trees and lines down 4:26pm
Lanesborough, MA Berkshire, MA 60 mph wind gust, picnic table blown into plate glass window 4:05pm
Litchfield, CT Litchfield, CT Wind damage, trees down 4:35pm
Vischer Ferry Saratoga 57 mph wind gust, trees down Unknown