Severe Weather Season Tips
In Iowa, Severe Weather Week is observed in March with the testing of sirens and warning systems throughout many Iowa communities. Just because March is over, doesn’t mean the dangers have disappeared. As we transition from winter weather into spring and soon into summer, the risk of severe weather increases.
Severe weather can happen anytime, in any part of the country. Severe weather can include hazardous conditions produced by thunderstorms, including damaging winds, tornadoes, large hail, flooding which includes flash flooding.
Tornadoes can destroy buildings, flip cars, create deadly flying debris, and can happen anytime and anywhere. If you are under a tornado warning, find shelter right away. Ensure that your job site and workers know where to go for shelter, especially new construction that may not have an established area yet.
- If you can safely get to a sturdy building, then do so immediately.
- If you are in a building with no basement, then get to a small interior room on the lowest level.
- Stay away from windows, doors, and outside walls.
- Watch out for flying debris that can cause injury or death.
- Use your arms to protect your head and neck.
Lightning is a leading cause of injury and death from weather-related hazards. Most lightning victims survive, but people struck by lightning report a variety of long-term symptoms. Thunderstorms include powerful winds, potential to create hail and cause flash flooding and tornadoes.
It is important to pay attention to severe watches and warnings in your area. When thunder roars, go indoors. Prepare and know how you are going to alert your workers (especially those that are working outside) when to go inside or seek shelter, and also on when to return. Ideally when you hear thunder, lightning is close enough to strike. After the storm has passed, it is a good idea to wait thirty minutes before resuming outdoor activities.
Know your threat categories:
Severe Thunderstorm Watch
– Means conditions are favorable for the development of severe thunderstorms. The size of the watch will vary depending on weather situations. By definition, a severe thunderstorm is one which produces one inch hail or larger in diameter and/or winds in excess of 58 miles per hour.
Severe Thunderstorm Warning
– This is issued when a severe thunderstorm is indicated by radar or a trained spotter reports a thunderstorm producing hail or winds in excess of the conditions for a watch. A warning can be issued with a watch taking place. Lightning frequency however is not a condition to produce a warning.
Tornado Watch
- Tornadoes are likely to occur in the watch area. Be ready to act quickly take shelter, and check supply kits. Monitor radio and television stations for more information.
Tornado Warning
- Imminent threat - A tornado has been sighted in the area or has been indicated by radar. Take shelter immediately.
