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Thunderstorm Wind in Modoc County, California

Thunderstorm Wind July 13, 1999 · Modoc County, California

60
Wind speed (unit not recorded)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

See below.

The wider storm

The Klamath Falls Herald and News reported that strong winds struck Alturas around 2100 LDT on 07/13/99. The winds, probably caused by a microburst associated with a thunderstorm, damaged the roofs of the Alturas Middle School and the Alturas Municipal swimming pool. Numerous downed trees and power lines were also reported. Additionally, the HNX WCM reported damage that he observed when visiting Alturas. He reported that roof damage to a shed at the airport. The debris from the roof damaged a cyclone fence, and he estimated that the damaging winds were from the northwest at greater than 60 mph. This same gust broke three 4"x4" posts that were supporting a balcony at a residence 5 miles northwest of the airport. The Alturas ASOS reported a peak wind of 69 mph from 300 degrees at 2112 LDT. The two-minute average winds was 51 mph from 300 degrees.

Began near Alturas (41.4800, -120.5300).

Source: NOAA Storm Events Database, event 5711145. Narratives are written by the National Weather Service forecast office that issued the report.

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