April 25 Severe Weather

Thunderstorms expand throughout much of the state, the only exception is areas of southeast and south-central Iowa where they are currently free of any showers or thunderstorms. This is likely to change though, as a severe thunderstorm watch has just been issued that covers portions of southwest and south-central Iowa and will be in effect until 7 am. The watch was issued for the potential of large hail and damaging winds as a large cluster of thunderstorms is moving east out of Kansas and Nebraska.

Expect thunderstorms to continue throughout the night across much of the state. The potential for heavy rains exist throughout the state, flood watches have been issued to blanket the state as well due to this threat. Portions of the state, especially the southern third may see a few storms capable of large hail and damaging winds. Please stay alert throughout the night as the storms move through, as even strong straight-line winds can create damage to homes and pose a threat to life.

Tornado Watch #229 has now been issued to cover portions of the severe thunderstorm watches that may pose a threat for tornadoes during the overnight hours. A strong low level jet combined with ongoing storms may produce tornadoes with the broken line of surface based supercells that are moving along the NE/KS borders. This tornado watch will include the counties of Montgomery, Fremont, and Paige counties in Iowa until 7 am.

Once storms have moved through the state during the overnight hours, they may continue throughout the day and pose a limited severe threat. However, by the afternoon hours sufficient instability may have built up to pose a large hail and damaging wind threat. This threat will mainly include eastern Iowa...

Later updates are possible during the night and tomorrow morning on any severe weather threat and forecast changes...