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			News Warnings and alerts My warning/comments About General alerts Safety precautions After an incident Law File a report Tip a link Official / Governments NGO's Other sources Other Sources Links   Winter & Cold Weather Survival. www.ssrsi.org           When the temperature drops and ice crystals fill the air, be alert for strange pillars of sunlight. They can materialize right in front of you.   hea-www.harvard.edu           Weather Glossary.   www.weather.com
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