A tornado warning was issued for Clayton County on Thursday, July 2, 2026, as severe weather conditions triggered widespread alerts across eastern Iowa.
The warning, based on a report from KWWL, remains in effect until 3:30 PM.
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In addition, a severe thunderstorm watch covers most of eastern Iowa until 7:00 PM.
Hazards include large hail, damaging winds, flooding rain, and isolated tornadoes.
Heat and Humidity Build Before Storms
Morning rain in northern counties is expected to diminish around 10:00 AM, giving way to partly cloudy, hot, and humid conditions.
Temperatures will range from the mid-80s in northern areas to the mid-90s in southern regions.
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Dew points in the mid-70s south of Highway 20 will create heat indices between 100 and 105 degrees.
Scattered storms are forecast to develop in northwestern counties late this afternoon, then track east-southeast through the evening, bringing heavy rain and damaging winds.
Stormy conditions are expected to persist overnight, with lows dropping to the upper 60s and mid-70s.
Severe Weather Continues Through Holiday Weekend
The severe weather outlook extends into Friday, with strong morning and afternoon storms possible, along with more widespread rain through Friday night.
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For the Independence Day holiday weekend, rain and storms are likely through Saturday morning. However, weather models indicate clearing conditions by Saturday afternoon, ahead of evening fireworks.
