Is it time to sweat another winter?
Today is the official first day of winter, and although we’ve already had some hard freezes, it’s the severe ice storms that have made many Oklahomans sweat the last several winters.
Of 62 declared disasters in Oklahoma since 1955, eight were for "ice storms” or "severe winter storms.” Each has come since December 2000, according to the state Department of Emergency Management.
Although they work in two different professions, Sid Sperry, director of public relations, communications and research at the Oklahoma Association of Electric Cooperatives in Oklahoma City, and Steve Piltz, meteorologist in charge at the Tulsa National Weather Service forecast office, have been among those bearing beads of perspiration as precipitation turned to ice that eventually led to power outages and property damage.
So they decided to wipe their collective brow and designed the "Sperry-Piltz Ice Accumulation Index” with assistance from the Oklahoma Climatological Survey.
The purpose of the index is to measure an oncoming ice storm’s severity, Sperry said.
This may be helpful for electric and communication utilities with overhead lines and equipment, but also for other disaster preparedness agencies, including Oklahoma Emergency Management.
Using this index, damage potential is categorized in five levels and is gauged by ice accumulation, wind speed and temperatures.
Knowit: Severe weather