The National Weather Service in Juneau has developed this page to promote
lightning safety and education. More deadly than hurricanes or tornadoes,
each year in the U.S. lightning kills an average of 73 people and injures
another 300. Lightning deaths and injuries are unusual in Alaska, but
not unheard of. In 1986, a teenage girl was killed and three other people
injured near Tok when they took shelter under a tree. In 1993, a young
man was injured by lightning while standing on a ball field in North Pole,
Alaska.
Thunderstorms and lightning are rare in Southeast Alaska when compared
with the Alaskan Interior and most of the Lower 48. Usually they are observed
along the Outer Coast as strong cold fronts move in from the Gulf of Alaska.
Interestingly, these storms can occur during the winter months as well
as during summer. On some occasions thunderstorms can develop or spread
over the Inner Channels of the Panhandle. The last time this occurred
was in June of 2000 when outbreak of scattered thunderstorms moved through
the Juneau area.
Lightning is responsible for about 97 percent of the acreage lost to
wildfires in Alaska. BLM sensors positioned across the interior have located
an average of 26,000 cloud-to-ground lightning strikes per year. Very
active thunderstorm days may feature 2,000 to 5,000 lightning strikes,
mainly occurring during the late afternoon hours in late June and early
July. The most active thunderstorm area in Alaska, based on cloud-to-ground
lightning strikes, is the White Mountains north of Fairbanks.
In Southeast Alaska, the risk of wildfire due to lightning strikes is
much less prevalent than in the Interior. However, the risk to boaters
on the water, hikers in the mountains and sports enthusiasts on ball fields
and golf courses is much more significant.
![](/peth04/20041014215803im_/http://pajk.arh.noaa.gov/lightning/images/HistoricLightningImage.jpg)
H.M. Ship SURINAM struck by lightning off the coast of France December
11, 1906. Lightning "struck the mainmast and split it in pieces."
Two crewmen were killed and four injured. The ship was in grave danger
of drifting onto a lee shore. Taken from "The Thunder-Storm",
Charles Thomlinson, F.R.S., 1877, p. 174.
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Some Lightning Safety Tips for Southeast Alaska
Boating lightning safety:
- Research and invest in a lightning protection system for your boat.
Remember however there is no such thing as a lightning-proof boat!
- Always check the weather forecast before heading out on the water.
If possible continue to monitor the weather while out on the water via
NOAA Weather Radio. If thunderstorms are in the forecast the best bet
is to stay ashore!
- Discontinue fishing, scuba diving or other water related activities
when there is lightning or even when skies look threatening. The first
lightning strike can be a mile or more ahead of an approaching thunderstorm
cloud.
- If time permits lower, remove or tie down your radio antenna and other
protruding devices if they are not part of a lightning protection system.
- If caught in a lightning storm, crouch down in the center of your
boat as low as possible. Keep away from metal objects.
- Disconnect and do not touch electronic equipment, including the radio,
throughout the duration of the storm.
- Learn CPR. There is no danger in touching someone after they have
been struck by lightning.
- If you think your boat may have been struck by lightning be sure to
have the electrical system and compasses checked out for damage.
Outdoor lightning safety:
- If possible, get indoors or inside a hard topped vehicle with the
windows closed. Do not touch any metal inside the vehicle.
- Stay away from trees. Stay twice as far from a tree as it is tall.
- If caught hiking, don't be the tallest object around. In the mountains
try to get below the treeline and into a cave or the smallest grove
of trees or shrubs. Discard any metal (backpacks, etc.) and crouch down
on the balls of your feet.
- Never stay in a group! Stay at least 20 yards a part. If someone gets
struck the others in the group will be able to help.
- Get medical attention immediately if someone is struck. Give first
aid and Call 9-1-1. There is no danger in touching someone after they
have been struck by lightning.
Indoor lightning safety:
- Do not use corded phones.
- Stay away from windows and doors. Stay off porches.
- Avoid contact with plumbing. Do not shower, do laundry, wash your
hands or dishes until the storm passes.
- Avoid contact with electronic equipment, cords and plugs. Before a
storm arrives, unplug computers and other valuable electronics. Typical
surge protectors will not protect against a lightning strike.
- Stay off concrete floors and walls. These likely contain metal reinforcing
bars.
For more information on lightning check these out:
Lightning safety from
the National Weather Service
A great
paper on boating and lightning protection
Another great NWS
lightning information site
Questions or Comments? Contact our Warning Coordination Meteorologist: Chris
Maier |