NOWCAST

NOWCAST WMmtKKKLM Interesting Ice Accumulation on a Cup Anemometer during an Oklahoma Ice Storm BY CHRISTOPHER A . FIEBRICH he Oklahoma ice storm of 28-30 January 2002 The condition of the 2-m cup anemometer pro- caused more than $100 million in damage and vided an excellent learning opportunity (see photo Tleft mor e than 250,000 residences and businesses above). Ice extended outward approximately 115 m m without power. The Oklahoma Association of Elec- fro m the cups, appearing to defy gravity. From these tri c Cooperatives reported over 31,000 electrical ice radials, multiple icicles formed downward for poles destroyed by the storm (McManus 2002). The about 200-250 mm. stor m also caused numerous problems within the An analysis of rainfall, temperature, and wind data Oklahoma Mesonet (a networ k of 115 remot e meteo- fro m Kingfisher (see the time series plot on page 552) rological stations across the state; Brock et al. 1995). helped in understanding the unique ice accumulation Win d data fro m 52 Mesone t stations ha d to be manu- pattern. First, the air temperature decreased below 0.0°C ally flagged (Fiebrich and Crawford 2001) as errone- at 0205 UTC on 30 January. The Mesonet's tipping http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the American Meteorological Society American Meteorological Society

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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0477
D.O.I.
10.1175/1520-0477-84.5.551
Publisher site
See Article on Publisher Site

Abstract

WMmtKKKLM Interesting Ice Accumulation on a Cup Anemometer during an Oklahoma Ice Storm BY CHRISTOPHER A . FIEBRICH he Oklahoma ice storm of 28-30 January 2002 The condition of the 2-m cup anemometer pro- caused more than $100 million in damage and vided an excellent learning opportunity (see photo Tleft mor e than 250,000 residences and businesses above). Ice extended outward approximately 115 m m without power. The Oklahoma Association of Elec- fro m the cups, appearing to defy gravity. From these tri c Cooperatives reported over 31,000 electrical ice radials, multiple icicles formed downward for poles destroyed by the storm (McManus 2002). The about 200-250 mm. stor m also caused numerous problems within the An analysis of rainfall, temperature, and wind data Oklahoma Mesonet (a networ k of 115 remot e meteo- fro m Kingfisher (see the time series plot on page 552) rological stations across the state; Brock et al. 1995). helped in understanding the unique ice accumulation Win d data fro m 52 Mesone t stations ha d to be manu- pattern. First, the air temperature decreased below 0.0°C ally flagged (Fiebrich and Crawford 2001) as errone- at 0205 UTC on 30 January. The Mesonet's tipping

Journal

Bulletin of the American Meteorological SocietyAmerican Meteorological Society

Published: May 1, 2003

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