WOODWARD, Okla. — The tornadoes were unrelenting — more than 100 in 24 hours over a stretch of the Plains states. They tossed vehicles and ripped through homes. They drove families to their basements and whipped debris across small towns throughout the Midwest. In some areas, baseball-size hail rained from the sky.

And yet, in a stroke that some officials have attributed to a more vigilant and persistent warning system, relatively few people were killed or injured.

As of late Sunday afternoon, the only five confirmed deaths from the weekend storms were all here in Woodward, a rural community about 140 miles from Oklahoma City. Local emergency management officials said on Sunday that children were among the victims and that there were 29 injured with ailments ranging from minor wounds to those requiring hospitalization.

Days ahead of the deadly winds there was an unusual warning that alerted residents across at least five states to the threat of “extremely dangerous” and “catastrophic” weather.