Iowa Severe Weather Alert: Large Hail Threat After 6PM, Storms to Continue Into Monday

DES MOINES, Iowa –Iowa residents are preparing for severe thunderstorms tonight as the National Weather Service (NWS) in Des Moines warns of large hail after 6 p.m. Sunday. Forecasters say storms will intensify after sunset, threatening vehicles, crops, and rooftops.

Hail and Storm Timing

NWS meteorologists expect isolated severe storms to form in central and northern Iowa late Sunday. As the evening progresses, storms will strengthen and produce hail large enough to cause property damage. Farmers in northern counties could see crop losses if hail cores sweep across fields.

The agency also warns of heavy rain bursts that could create localized travel hazards. Evening commuters should allow extra time and prepare for sudden low visibility.

Wind Threat Increasing Monday

The severe weather threat will continue into Monday. On September 22, damaging winds become a greater risk as storms move across the state. The NWS has placed much of Iowa under a Level 1 “marginal risk” for severe weather, with repeated rounds of storms possible into midweek.

This unsettled pattern may bring multiple rounds of rainfall, increasing the chance of ponding on roads and weakening tree limbs that could break under stronger gusts.

Preparation and Safety Guidance

Officials urge residents to take precautions before storms arrive:

Move vehicles into garages or covered parking to reduce hail damage.
Secure outdoor items such as patio furniture, trampolines, and grills.
Check weather alerts frequently through the evening and overnight.
Avoid driving during peak hail activity, as even small hail can crack windshields or cause accidents.

Looking Ahead

Meteorologists expect storm activity to linger into Tuesday and Wednesday, though the strength of future systems remains uncertain. Residents are encouraged to stay weather-aware and ready to adjust plans quickly.

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