Ice on the Trees: What a Middle Tennessee Ice Storm Does, and What to Prune First
Ice breaks trees by weight, and the limbs it takes are usually the ones that were already weak. Fall, before the first hard freeze, is the time to find them.
Why ice breaks trees that wind alone spares
A glaze of ice does its damage by weight. UT Extension's publication on storm-damaged residential trees describes crowns losing limbs under the weight of ice and snow, and young trees bent over in ice storms and heavy snows. Every twig in the crown can pick up a coat, and the weight stays on the tree until the ice melts.
Wind makes it worse. The National Weather Service has said its ice storm warnings are typically issued for forecast ice of a quarter inch or more, and that ice and wind together describe damage potential more realistically than ice alone. For a Gallatin homeowner the practical point is simple: the limb that breaks in an ice storm is usually one that was already cracked, dead, lopsided or overextended, and most of those can be found and dealt with in the fall.
The ice storms on Middle Tennessee's record
Ice is not an every-year event here, but it returns. The weather service office in Nashville keeps a calendar of significant Middle Tennessee weather, and it calls the storm that began on January 29, 1951 the worst ice storm in Nashville's history, one that stopped transportation in the city for two days. On December 23, 1998, an ice storm struck much of northern Middle Tennessee. Most recently, a major winter storm on January 22 and 23, 2026 brought ice accumulations of 0.50 inch or more across the Nashville metro.
The freezes that set up those storms arrive on a known schedule. NOAA's normals for Nashville International put the median first 32 F night on November 2, with one year in ten seeing it by October 19, and they count 17.2 freezing nights in an average December and 19.7 in January. Those figures and the rest of the local storm record are collected on the Gallatin storm and tree data page. Mid October is the window for a look at the crown while the weather is still mild.
Which yard trees take ice worst
Species matters. UT Extension's storm publication, adapted from earlier ice storm research, sorts common trees by how they hold up, and it singles out brittle wood, crown shape and winter leaves as the reasons. Trees with upright, narrow crowns resist icing better than spreading, vase-shaped or weeping ones, and trees that keep their leaves through winter catch more ice. The Bradford pear sits on the susceptible list, which is why the trees that split in Sumner County storms deserve a separate look.
- Susceptible: basswood, river and paper birch, boxelder, Bradford pear, crabapple, Chinese and Siberian elm, hackberry, magnolia, silver maple, Virginia pine and willow
- Intermediate: green and white ash, red and sugar maple, red oaks, hickories, dogwood, eastern redcedar and loblolly pine
- Resistant: baldcypress, blackgum, black walnut, ginkgo, holly, Kentucky coffeetree, sweetgum and white oaks
- Extra risk in winter: trees that hold their leaves, such as magnolia and pin oak
What to prune before the first hard freeze
Start with dead and broken wood. UT Extension advises pruning out dead or broken limbs every year and thinning excess branches every three to five years, because lopsided crowns are more likely to fail in a storm and regular pruning removes weak branches and cuts the surface area that catches wind and ice. Hangers left from a summer storm belong at the top of the fall list, along with any heavy limb reaching over a roof, a driveway or a play area. A tree trimming visit in October or early November gets that done before the first glaze.
Do not top the tree. The same publication warns that topping produces fast shoots weakly attached to stubs, and those are more likely to break in the next storm. Look at the line from the pole to the house as well. The Gallatin Department of Electricity leaves the service wire to the owner and will disconnect and reconnect it free during business hours, so clearing limbs above it ahead of winter is part of planning tree care in Gallatin, not something to leave until the wire is down.
After the ice: stay clear first, then sort the damage
When limbs are coming down, the first job is distance. UT Extension warns that broken limbs are often under tension and can kick back unexpectedly when cut, and that downed utility lines and hanging limbs need to be watched for. Anything touching a line is the utility's problem until the power is off. If a tree is large and the work is off the ground, the publication recommends calling a qualified arborist, ideally an ISA Certified Arborist, and checking that the tree service carries proper coverage.
Where a broken trunk or a big limb is on the house, the car or the drive, that is a job for emergency tree removal rather than a ladder and a pole saw. Smaller breaks close to the ground can wait for a dry day. Cut small broken branches back to where they join larger ones, cut large broken limbs back to the trunk or main limb just outside the branch collar, and skip wound paint, which research cited by UT Extension shows does not prevent decay.
Save the tree, or take it down
Most ice-damaged trees can be judged with a few rules from UT Extension. A tree that has lost more than 50 percent of its crown has a poor chance of survival. If more than 30 to 50 percent of the main branches or trunk are severely split or broken, extensive repairs are questionable. Broken branches away from the trunk generally do not threaten survival unless more than half the crown is involved, and the higher and smaller the break, the better the odds.
Young trees bent near or past horizontal will probably not recover and should be replaced, though some bent tops can be staked. A small or medium tree that blew over with at least 50 percent of its roots still in the soil can sometimes be braced with guy wires. A split trunk or a crown stripped to a few branches is a tree removal question, and replacing it with a species from the resistant list gives the next ice storm less to break.
Spotted a hanger or a heavy limb over the roof? Describe the tree and what sits under it, and independent crews around Gallatin will price the pruning.
More from the blog
Quick Answers
Do evergreen trees hold up better in an ice storm?
Not as a rule. UT Extension says trees that keep their leaves in winter, such as magnolia and pin oak, are more susceptible to ice damage, and it lists Virginia pine as susceptible. Eastern redcedar and loblolly pine fall in the intermediate group, while holly, arborvitae and eastern hemlock are rated resistant. Crown shape matters as much as leaves: narrow, upright evergreens shed ice better than broad, spreading ones.
Is fall a good time to prune trees in Gallatin?
For dead wood, broken limbs and hangers, yes. UT Extension recommends removing dead or broken limbs every year, and taking them out before the median first freeze in early November means they are not up there when ice arrives. Heavier structural thinning runs on a three to five year cycle, and the right timing for that depends on the species, so it is worth asking an arborist about each tree.
Who clears a limb that ice drops on the service wire?
It depends on the provider named on the bill. The Gallatin Department of Electricity leaves the service wire to the owner, disconnects and reconnects it free during business hours, and expects customers to handle cleanup after emergencies. Cumberland EMC members call for a service order. In every case, stay away from any wire with a limb on it and let the utility make it safe before anyone cuts.
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