The IWAP Signal Matrix
Five signals. Four hazards. One universal all-clear. Each signal combines a distinct audio pattern and colour-coded visual strobe, designed for simultaneous delivery and maximum accessibility across hearing and vision profiles.
| Hazard¹ | God² | Sound³ | Light⁴ | Response⁵ |
|---|---|---|---|---|
| ↑ Risks from above — seek secure shelter · Norse gods | ||||
|
Lightning
including bolts from clear sky
|
Thor
Norse god of thunder
|
− |
|
→ Any building or shelter
✕ Avoid trees, open ground, water
Crouch low if caught in the open
|
|
Wind
tornado, hurricane, severe storm
|
Kari
Norse god of the north wind
|
− · − |
|
→ Sturdy interior room, lowest floor
✕ Avoid windows, weak structures
Shelter quality matters — prioritize masonry or concrete
|
|
Snow
blizzard, whiteout, freezing conditions
|
Ullr
Norse god of winter and snow
|
· · − |
|
→ Any shelter; confirm destination visually first
✕ Do not move if destination not visible
Shelter in place if visibility already lost
|
| ↓ Risks from below — seek high ground · Roman god | ||||
|
Water
flash flood, river flood, tsunami, storm surge
|
Neptune
Roman god of water and the sea
|
− · |
|
→ Move to high ground immediately
✕ Avoid low ground, ravines, underpasses
Do not return until steady green confirmed
|
| ✓ All clear — all hazards resolved | ||||
|
All clear
all active warnings resolved
|
—
|
· · · |
|
→ Safe to resume normal activity
Universal signal regardless of preceding hazard
|
1Hazard scope: IWAP covers outdoor hazards where onset can be rapid and non-obvious, a specific directional response is possible, and existing warning infrastructure is absent or insufficient. Heat, avalanche, earthquake, and wildfire are deliberately excluded — heat escalates slowly and has no directional response; avalanche and earthquake offer no shelter direction; wildfire is managed by dedicated emergency services with established protocols.
2Gods — memory framework: Warm-colour hazards (risks from above) are associated with Norse gods — Thor, Kari, and Ullr — reflecting atmospheric, northern-origin threats. The cold-colour hazard (risk from below) is associated with Neptune, Roman god of water. Warm colours = Norse = seek shelter. Cold colour = Neptune = seek high ground.
3Sound: All signals use Morse code patterns matched to the first initial of the associated god: T (−), K (− · −), U (· · −), N (− ·), S (· · ·). Long tones approximately 3 seconds; short tones approximately 1 second. All IWAP-compliant systems must produce audible signals at a minimum of 100dB at 100 metres. Signals are triggered automatically with no human intervention required.
4Light: The flashing white component is universal across all hazard warnings, serving as the primary attention signal in all ambient conditions including heavy rain, low light, and for users with colour vision deficiency. Colour provides hazard-specific identification. Steady (non-flashing) green is the exclusive all-clear signal, providing unambiguous visual distinction between active warning and resolved states.
5Response: IWAP is a warning system, not a forcing system. Signals provide information to enable informed personal decisions. Duty of care for response infrastructure — shelters, evacuation routes, site-specific signage — rests with the site operator. IWAP certification covers warning signal compliance only.
Why This Standard
IWAP fills a gap that existing systems leave open. Lightning warning is standardized and widely deployed. Flood, wind, and blizzard warnings in outdoor recreational spaces are not. The result is that flash floods — which cause more fatalities annually than lightning, tornadoes, and hurricanes combined — have no equivalent outdoor warning infrastructure.
Warning, not forcing
IWAP informs. It does not restrict, require, or mandate behaviour. Informed adults make better decisions. The system respects autonomy while ensuring that ignorance of an incoming hazard is never the cause of harm.
Accessible by design
Every signal has both audio and visual components. The flashing white layer ensures visibility when colour recognition fails. App integration provides a tertiary channel for deaf users. No single point of failure leaves any user unwarned.
Backwards compatible
The lightning signal (one long tone) and all-clear signal (three short tones) are unchanged from existing standards. IWAP extends the established protocol rather than replacing it, protecting existing investments in warning infrastructure.
Open standard
IWAP is an open protocol. Any manufacturer may build compliant systems. Any jurisdiction may mandate it. No proprietary technology is required for compliance. The standard exists to serve public safety, not commercial advantage.
Built to be Remembered
A warning standard only works if people remember it. IWAP's signal framework is built around an integrated mnemonic system spanning colour, mythology, and audio.
Norse gods, Neptune, and sea —
gods and codes all use Morse.
Warm colours signal atmospheric hazards — lightning, wind, blizzard — associated with Norse gods whose names encode the Morse pattern. Cold blue signals water hazards, associated with Neptune. Steady green is always safety. The colour temperature of the warning maps to the axis of the threat: warm from the sky, cold from the ground.
Coalition & Adoption
IWAP is seeking partnerships with golf course operators, municipal parks authorities, conservation authorities, recreational facility operators, insurance providers, and weather safety equipment manufacturers.
If you represent a jurisdiction, institution, or manufacturer interested in IWAP certification or adoption, or if you are a researcher, advocate, or policymaker working in outdoor public safety, we welcome your contact.