While the federal government says you don’t need to seal up you windows with duct tape and plastic right now to guard against a chemical attack — you may be thinking about it today to keep out the cold. National Weather Service Meteorologist Gary Forster says today’s chilly temps are going to get worse tonight. He says the jet stream has gone pretty far south, which is letting cold Canadian air into Iowa. He says light winds and the cold air will get rid of any of the heat we gain with today’s sun. Forster says the below-zero temperatures are well below what we normally expect.He says the normal high is about 38 with a low of 21. He says the extreme cold won’t be a longterm trend. He says we’ll be warming back to the 20s already by tomorrow. Forster says this time of year cold snaps don’t last long because the days are getting longer and conditions are better for warming. Iowa’s gone from snow, to temps in the 40s and 50s to sub-zero temps in the last several days. Forster says he can live with the ups and downs when he sees the stuff that’s happening elsewhere. He says in the south the jetstream has brought on a lot of snow, rain and flooding, so he says he can handle some ups and downs in temperatures. Most of the state is under a windchill advisory this morning.
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