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Severe Storms July 26, 2012

Microburst/Straight Line Wind Damage/Confirmed near Harford in Susquehanna County Pennsylvania

  • Location: Harford in Susquehanna County Pennsylvania
  • Date: July 26 2012
  • Estimated time: 510 PM EDT
  • Estimated maximum wind speed: 80 MPH
  • Maximum path width: 0.5
  • Mile path length: 2.5 miles
  • Beginning lat/lon: 41.78n / 75.75w
  • Ending lat/lon: 41.78n / 75.70w
  • Fatalities: 0
  • Injuries: 0

Summary

The National Weather Service in Binghamton, NY has confirmed a Microburst/Straight Line wind damage near Harford in Susquehanna County Pennsylvania on July 26 2012.

A severe thunderstorm tracked across south central Susquehanna County on the afternoon of Thursday July 26, 2012. Strong winds produced damage near Harford, PA beginning with several areas of uprooted and snapped trees along Grinnell and Miller roads. A piece of metal roofing from a silo was torn off and sent through the window of a nearby residence. Damage then continued along Tyler Lake where dozens of trees were uprooted and toppled onto cottages on the eastern shore of the lake. A porch roof was torn off one of the buildings. From the damage observed, the winds accelerated to the maximum estimated speed of 80 mph while crossing the lake. Additional damage to trees and buildings was noted in the village of Harford. A chimney was toppled off one of the structures, otherwise damage was mostly caused by trees falling onto homes.

In general,the damage pattern was oriented in a west to east fashion which is consistent with straight line winds from a Microburst. Estimated wind speeds associated with this storm were 60 to 80 mph.

The image below is the approximate path and width of the straight line winds.

approximate path of the straight line winds

For reference:

A microburst is a convective downdraft with an affected outflow area of less than 2 1/2 miles wide and peak winds lasting less than 5 minutes. Microbursts may induce dangerous horizontal/vertical wind shears, which can adversely affect aircraft performance and cause property damage. Straight-line winds are generally any wind that is not associated with rotation, used mainly to differentiate them from tornadic winds.
The information in this statement is preliminary and subject to change pending final review of the event(s) and publication in National Weather Service Storm Data.

Brewster


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Page last modified: July 30 2012