Conditions favorable for funnel cloud formation, NWS says


Current atmospheric conditions support the development of funnel clouds, according to the National Weather Service (NWS) offices in Des Moines.

Several reports of funnel clouds near Dike and Cedar Falls were received just before 3 p.m.

Usually, these funnel clouds can form from developing clouds, showers and weak thunderstorms, the NWS said. Such funnels are normally brief, drop only a few hundred feet from the cloud base and rarely become a tornado or cause damage.

If a tornado is spotted, however, one should immediately report it to the NWS. If it becomes necessary to issue a tornado warning, one should take all appropriate action, the NWS said.


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