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Buzz - August 2007
What to do in a lightning storm

   There’s still plenty of summer left and summer is the peak season for one of the nation's deadliest weather phenomena— lightning. Camping. Hiking. Biking. Paddling. If you find yourself outside during an approaching, or in a lightning storm, follow these tips from the National Lightning Safety Institute to help you find safety.

Family at the Beach

   You plan to go to the beach or lake later this morning with the kids. The weather forecast calls for a nice morning followed by a 30 percent chance of afternoon thunderstorms. You decide to head for the beach in your minivan. The beach is about 5 minutes from the parking lot. The only nearby buildings are picnic shelters. By early afternoon you notice the skies darkening and hear distant thunder. What would be your lightning safety plan of action?

   In this case, the best place to go is your car. Do NOT seek shelter under the beach picnic shacks because these are not safe in lightning storms. Wait 30 minutes until after the last thunder crack before going back to the beach or driving home.

 

Camping

   You and your family or friends are camping. As you are preparing dinner on the camp stove, you hear rumbles of thunder in the distance. You look around and you see your tent is nearby, and a large picnic shelter is just down the trail. Your car is about a quarter mile away parked at the trail head. What should you and your family/friends do?

   In this case, the smartest thing to do is to round up your group and get into your car. The tent is not a safe place to be as it offers NO protection from a lighting flash. The picnic shelter is also not a safe location. (Both the tent and picnic shelter will keep you dry…but they offer NO protection from a lightning flash). It is best to remain in your vehicle for about 30 minutes after the last rumble of thunder is heard.

On the Water

   The vast majority of lightning injuries and deaths on boats occur on small boats with NO cabin, such as a canoe or sea kayak. It is crucial to listen to the weather on a small aquatic vessel without a cabin. If thunderstorms are forecast, don't go out. If you are out on the water and skies are threatening, get back to land and find a safe building or vehicle.

   Boats with cabins offer a safer but not perfect environment. Safety is increased further if the boat has a properly installed lightning protection system. If you are inside the cabin, stay away from metal and all electrical components. STAY OFF THE RADIO UNLESS IT IS AN ABSOLUTE EMERGENCY!

   What should you do if you are on a small vessel and lightning becomes a threat? If the vessel has an anchor, then you should properly anchor the boat then get as low as possible.

Large boats with cabins, especially those with lightning protection systems properly installed or metal marine vessels are relatively safe. Remember to stay inside the cabin and away from any metal surfaces.

On a Bicycle

   If you see threatening skies in the distance and you are passing a safe location, pull over and wait 30 minutes after the last thunder crack. If you can turn around and get away from the storm, do so! DO NOT ride into a lighting storm!

   If you absolutely cannot get to a safe building or vehicle, here are some last resort choices:

  • Wait out the storm below an overpass. DO NOT touch steel girders. Move away from your bike. Remain on dry surfaces if possible. Overpasses are engineered structures and are likely to be properly grounded. Although an overpass is likely to be higher than the surrounding landscape, if it is struck by lightning, the electrical current will likely be channeled safely into the ground.
  • Look for a bridge. Stay away from water. Stay away from any metal surfaces. Be alert for rapidly rising water if under a bridge.
  • High tension wires: If high voltage electrical tension wires cross the road, you may want to seek shelter directly underneath these wires. Do not get too close to the large metal towers which hold up these wires. Stay at least 50 feet away. Electric companies design these high tension wires for lightning strikes. If lighting should strike the wires or towers, the current is designed to safely go deep into the ground.
  • If you are caught in the open and lightning is occurring within 5 miles, STOP riding, get off of your bicycle, find a ditch or other low spot and sit down.

Other Safety Tips:

1. PLAN in advance your evacuation and safety measures. When you first see lightning or hear thunder, activate your emergency plan. Now is the time to go to a building or a vehicle. Lightning often precedes rain, so don't wait for the rain to begin before suspending activities.

2. IF OUTDOORS...Avoid water. Avoid the high ground. Avoid open spaces. Avoid all metal objects including electric wires, fences, machinery, motors, power tools, etc. Unsafe places include underneath canopies, small picnic or rain shelters or near trees. Where possible, find shelter in a substantial building or in a fully enclosed metal vehicle such as a car, truck or a van with the windows completely shut. If lightning is striking nearby when you are outside, you should:

  • A. Crouch down. Put feet together. Place hands over ears to minimize hearing damage from thunder.
  • B. Avoid proximity (minimum of 15 feet) to other people.

3. IF INDOORS... Avoid water. Stay away from doors and windows. Do not use the telephone. Take off head sets. Turn off, unplug, and stay away from appliances, computers, power tools and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.

4. SUSPEND ACTIVITIES for 30 minutes after the last observed lightning or thunder.

5. INJURED PERSONS do not carry an electrical charge and can be handled safely. Apply First Aid procedures to a lightning victim if you are qualified to do so. Call 911 or send for help immediately.

6. KNOW YOUR EMERGENCY TELEPHONE NUMBERS.

Teach this safety slogan:
“If you can see it, flee it; if you can hear it, clear it.”

How Far Away is Lightening From Me?

   From the National Weather Service

   To estimate the distance between you and a lightning flash, use the "Flash to Bang" method: If you observe lightning, count the number of seconds until you hear thunder. Divide the number of seconds by five to get the distance in miles.

   Example: If you see lightning and it takes 10 seconds before you hear the thunder, then the lightning is 2 miles away from you (10 divided by 5 = 2 miles).

If Thunder is heard

The Lightning is...

5 seconds after a Flash

1 mile away

10 seconds after a Flash

2 miles away

15 seconds after a Flash

3 miles away

20 seconds after a Flash

4 miles away

25 seconds after a Flash

5 miles away

30 seconds after a Flash

6 miles away

35 seconds after a Flash

7 miles away

40 seconds after a Flash

8 miles away

   Get to a safe location if the time between the lightning flash and the rumble of thunder is 30 seconds or less.

   For more information on lightning, click here: Lightning Safety, handouts, brochures, links and more.

 
 
 
 
Copyright @ Price Media, Inc. 2007