Archive for Wednesday, November 15, 1989

ARCTIC COLD FRONT CALLS HALT TO HEAT

November 15, 1989

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Break out the heavy coats and throw another log on the fire. Unseasonably warm weather has quickly become a thing of the past.

Mark Bogner, forecaster for the Kansas University Weather Service, the official reporting station for Lawrence, said this morning that local temperatures will plummet throughout today and bottom out in the low 20s.

Gusty north winds in the 20 mph range will make things feel even colder, producing a wind chill factor of about 10 degrees below zero tonight, he said.

Thursday's high is not expected to break the 30-degree mark, he said, and continuing winds will put the wind chill factor at a chilly 0 degrees.

Bogner said the cooler air is coming down from the north, where it left its ugly mark in Alaska.

"It's an arctic front barreling down from the north and is the same air that gave Alaska record lows over the weekend," he said. "As a rule, whenever Alaska gets record lows, watch it, because it will come down."

Bogner said he saw a little relief in sight, saying that temperatures over the weekend should reach into the 50s.

He said a dip in the jet stream allowed the cold air to make its way south.

During the winter months, the jet stream typically is located more to the south, keeping warm temperatures at bay and covering the area with cooler northern air.

During the summer months, the jet stream usually remains in the northern tier of states, which allows warm air from the south to spread over much of the country.

Earlier this week, the jet stream was farther north than usual for this time of year, allowing unseasonably warm temperatures in the area. Sunday's high of 76 degrees broke the former record of 74 degrees set in 1944 and tied in 1971.

Bogner describes the jet stream as fast-flowing air that dictates how weather systems move across the country.

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