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Personal Lightning Detector

only $69 each or 2 for $135.00


Please note: This is the latest model. You may see some sites incorrectly advertising this as "StrikeAlert II", however this is the only model available since 2005. 

The world's first convenient, dependable and easy-to-use personal lightning detector.
  Detects lightning in ranges as close as 6 miles or as far as 40 miles away.


StrikeAlert is a small (about the size of a pager) and affordable lightning detector that provides an early warning of approaching lightning strikes from as far away as 40 miles and lets you know if the storm is coming your way. Its designed for personal and portable use.

An audible alarm sounds when there's a strike and a corresponding LED light illuminates accordingly at lightning distances of 20-40 miles, 12-24 miles, 6-12 miles and within 6 miles.

The detector is housed in a small pager-like casing that can be clipped on a belt loop and runs on two AAA battery up to 100 hours. It's perfect for outdoor sporting events and activities.


Who uses it?

  • Television Live Van News Crews

  • Electric, Cable TV, and Telephone Utility crews

  • Coaches in charge of sporting events

  • Golf courses and golfers

  • Hikers, campers, boaters

  • Forest Fire crews and smokejumpers

  • School administrators


Convenient Size & Weight
Small and impact-resistant, StrikeAlert clips to your belt, golf bag or backpack.
Take it wherever you go!

Audible Warning
Loud audible warning sounds before (and while) lightning is within striking distance.

Visible Warning
LED's show range of strikes, plus can indicate direction.

Low Power Consumption
Up to 100 hours of reliable operation with a single AA battery.

With the flip of a switch, you can see the lightning strike distance, track the storm direction and view battery life.


Power Switch
The power switch has three positions: On, Off and On with tone. The switch may also be depressed to indicate the direction of storm movement


Battery Check
When first turned on, StrikeAlert performs a battery test.

The LEDs will indicate the battery level, with each LED indicating about 20 hours of operation. The LEDs will light up, beginning with the red LED and leading up to the current battery level. The current battery level will be the final LED to light and will remain lit for two seconds. StrikeAlert will then begin its normal operation.


Normal Operation
During normal operation, the green LED will be on continuously to indicate StrikeAlert is monitoring for lightning strikes. If the green LED is blinking, StrikeAlert is in the presence of interference.


How it works- Detecting Lightning Strikes
When a lightning strike is detected, StrikeAlert will light the appropriate LED indicating the distance of the strike This LED will remain lit for two minutes- unless another strike occurs during that time. If a more recent strike is further away, the LED indicating this distance will light for two seconds, and then return to complete the two minutes from the nearest strike. If a more recent strike is nearer, it will replace the previous LED reading. This LED indicator will be held for two minutes. This allows the user to see all the lightning activity within a 40 mile range, giving clearer visibility to the nearest strike in the last two minutes. If the power switch is in the "On with Tone" position, StrikeAlert will also generate tone(s) indicating the distance of the strike along with lighting the appropriate LED. This allows you to determine the storm's activity without having to monitor the LEDs.


Storm Direction
Strike Alert uses a trend of strike distances over the last five minutes to determine if a storm is approaching or departing. By depressing the power switch, the LED will change to one of three patterns:


  • If the LED cycles from green to red, the storm is approaching.

  • If the LED cycles from red to green, the storm is departing.

  • If the LED cycles from the center LED to the outside LEDs, the storm is stationary or there's not enough data to Display.gif (3167 bytes)determine the direction of the storm. Direction cannot be determined if there has not been enough strikes to identify a trend or StrikeAlert has not been running long enough. Approximately five minutes is needed in the presence of lightning strikes to determine direction.


StrikeAlert is designed to be used outdoors.
While StrikeAlert will work indoors, its ability to detect lightning strikes can be affected by common sources of electromagnetic emissions, such as:


  • CRTs - (televisions or computer monitors)

  • Gasoline Motors and engines

  • High-powered electric equipment such as industrial machinery


Moving StrikeAlert a short distance away from these devices (usually a few feet) should allow the detector to return to normal operation. If StrikeAlert is receiving interference due to such electromagnetic emissions, the green LED will blink or may give a false lightning indication. The static generated by some garments may also produce a false indication, but this is usually only a problem in winter or extremely dry climates. Again, moving the detector just a few feet away from the source of the interference should allow StrikeAlert to resume normal operations. This will be indicated by the green LED remaining constantly lit.


Display.gif (3167 bytes)





StrikeAlert is used by KWGN-TV (Denver) live van operators to determine if it's safe to raise the live van antenna mast...

Southwest Airlines ordered 100 of these units for their ground service crews...


"During a recent State Soccer Association Tournament one of our officials had a StrikeAlert Lightning Detector on her belt.  I questioned the detector thinking it was just another gimmick.  Later that day the detector registered lightning 12-24 miles away.  Soon after, it registered 6-12 miles away.  Within ten minutes there was a big storm with lightning.  That detector really worked! Now I want one for my association."                      
Susan C.
Wilkesboro, NC

Lightning - The Underrated Killer

In the USA, there are an estimated 25 million cloud to ground lightning strikes each year.

While lightning can be fascinating to watch, it is also extremely dangerous. During the past 30 years, lightning killed an average of 73 people per year in the United States based on documented cases. This is more than the average of 68 deaths per year caused by tornadoes and the average of 16 deaths per year caused by hurricanes.


Related products:


A lightning detector and alarm system for permanent installation on a mobile van or in a building.

Boltek Storm Tracker Track storms in a "doppler radar like" display on your PC.

Enhanced lightning tracking software for the Boltek Storm Tracker

Boltek LD-250 PORTABLE Storm Tracker

Track storms in a "doppler radar like" presentation on your laptop, great for storm chasers or mobile field operations.



#WXOT-LD-1000   StrikeAlert Lightning Detector:   $69.00 * (List Price $79.99)   Qty:

* Quantity Discounts Available!

2 to 10 Units:
$1.50 off each
11 to 100 Units:
$2.50 off each

Instruction Manual (.PDF files require Adobe Reader)


StrikeAlert FAQ's

Who needs StrikeAlert?

StrikeAlert is perfect for an advanced warning to approaching lightning for all outdoor sports, work and activities. Strike Alert is carried by TV live van operators at KWGN-TV in Denver to determine if its safe to raise the portable live Van mast.  Golf course use it to monitor in their clubhouse, and golfers carry it on them. Swimming meets, baseball games, soccer, hiking, walking, boating, camping, picnics, tennis, biking, hunting, and outdoor concerts are a few of the outdoor activities StrikeAlert is used for.


Also people working outdoors in utility companies, construction, and farming have found StrikeAlert a valuable tool for personal safety.


Is StrikeAlert "weatherproof" ?

StrikeAlert is designed to be weatherproof, which means it can be used in all outdoor temperatures and will operate when exposed to an occasional light rain. If submerged in water (or covered in water) it may not operate accurately.


Does StrikeAlert come with a battery?

Yes, StrikeAlert comes with one AA battery installed.


How long will StrikeAlert operate on a battery?

Under typical operating conditions, StrikeAlert will operate up to 100 hours.


Does StrikeAlert work Indoors?

While StrikeAlert will work indoors, it's ability to detect lightning strikes can be affected by electromagnetic emissions from computers, electric motors, in and a vehicle, the sparkplugs. You can easily solve the problem by just moving StrikeAlert a few feet away.



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