Iowa weather: No, your trees aren't going to 'explode' during extreme cold

The Iowa DNR says sap that's warmed by the sun during the day can rapidly freeze, causing it to expand when the temperatures drop.  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  EVENING DIGEST Jan 23, 2026 Iowa weather: No, your trees aren't going to 'explode' during extreme cold » Des Moines, dozens of other school districts cancel classes Friday » What to know about extreme cold arriving tonight » Safety first: How central Iowa schools make winter weather calls » How to Prep Your Sidewalk to Prevent Ice Before It Forms » FAA is making the rules imposed after an airliner collided with an Army helicopter permanent » Police say cold exposure may be factor in Des Moines man's death » Controversial bill on ivermectin advances in Iowa House » Measles elimination status 'not really' a concern, CDC official says » House Republicans defeat war powers resolution to check Trump's military action in Venezuela » DES MOINES WEATHER  ALERTS (2)  CLOSINGS (148) Iowa weather: Extreme cold warning as frigid temps set in » Today Bitterly cold. Partly cloudy skies. Low around -9F. Wind chill as cold as -30F. Winds N at 15 to 25 mph. Get full weather forecast, view interactive radar and more » The 6 Best Smart Thermostats of 2026 » Winter storm: What food to have if the power goes out » Millions of Americans brace for potentially catastrophic ice storm. What to know, by the numbers » Olympian Kristi Yamaguchi on growing up skating, Nancy Kerrigan's attack in 1994 interview » MANAGE YOUR ACCOUNT If you'd like to receive some of our other email newsletters, you can tap or click the links below: Be among the first to receive National Breaking News or Local Breaking News as stories break. Catch up on the day's big stories with our Morning Headlines and Afternoon Digest newsletters. Receive our Daily Forecasts or get Severe Weather Alerts sent straight to your email inbox. Manage your email newsletter subscriptions » For the very latest information, download our free apps To ensure email delivery, add newsletters@e.kcci.com to your address book or safe senders list © 2026 Hearst Properties Inc. 300 W 57th Street, New York NY 10019 Privacy Notice | Terms of Use | Unsubscribe