Biggest takeaway:
This is a routine occurrence/hazard that needs a plan - otherwise, you are putting your people's lives at risk. When Thunder Roars - Go Indoors (or into your vehicle). Nearly all lightning deaths occur outside - from people disregarding their risk, or thinking they have a few minutes more. The most deadly strikes are often the first few before the rain begins.
Warning/Trigger for Plan:
There is no NWS warning for lightning threat, but nature has its own warning - thunder.
Advance Notice/Time to Activate & Accomplish Your Planned Response:
Typically 5-30 minutes
Frequency: ~ 20 times/year at various time of day & night
- Lightning threat is all about level of risk. Anything past what is listed below as safe near a thunderstorm increases your risk.
- If you can hear thunder, you are in danger of being struck outdoors.
- Nearly all lightning deaths occur outdoors.
- Staying dry is not the same as being safe from lightning.
- Some charge from a nearby strike can be carried through wiring & plumbing. To be extra safe, avoid using corded items, or showers/sinks during thunderstorms.
- What is Safe?:
- Fully enclosed, permanent building
- Not roofed, but open shelters (like gazebos)
- Not fabric covered, metal framed pavilions
- Shelter from the rain is not the same as shelter from lightning
- Hardtop (non-convertible) Vehicles
- "When Thunder Roars, Head Indoors"
- Shelter at first rumble of thunder
- Shelter until 30 mins after last rumble of thunder
- Anything less than the above increases risk.
- At a minimum, make all aware of the risk, & what they can do to lessen their own risk individually.
- Safety References: