From left: Elisa Teodori, Chelsea Tremblay and Bryan Perry at Ohmer Creek near Petersburg last year. An ice jam often happens when the water level in a creek rises due to snow melt, causing ice to break into chunks.
Sunday, January 14, was the warmest day on record in Petersburg for the month of January, with temperatures reaching 63 degrees, according to the National Weather Service in Juneau.
What's more, the state of Alaska hit a record high on Annette Island, where it was 66 degrees, said Jake Byrd, a forecaster with the weather service.
The winter heat comes after temperatures dropped well below freezing last week.
"When we go from extreme cold to extreme warm like this," Byrd said, "basically what that means is the upper level wind pattern significantly changed."
In this case, the jet stream had shi...
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