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Mon - Fri: 9:00 - 17:00
Rule of 3 – Dynamic Risk Assessment for Tropical Environment
A simple field decision tool for jungle, urban and marine environments, including tropical weather, emergency readiness and remote-location controls. Select Green, Amber or Red for each condition. The tool will calculate the overall status.
Three Ambers = One Red.
1 Amber
Caution
Caution
2 Ambers
Stop & Reassess
Stop & Reassess
3 Ambers
Red
Red
Any Red
Stop
Stop
Current Status: GREEN
Conditions are currently acceptable. Continue with normal controls, maintain awareness, and keep monitoring the environment.
0
Green
0
Amber
0
Red
All
Environment
Assessment Details
Guidance: Green = acceptable, Amber = warning sign, Red = stop condition.
If unsure, select Amber and reassess with the team.
Date, Time and Review Details
Record when the Rule of 3 check was completed and when conditions must be reviewed again. This is especially important for changing weather, remote locations, marine work, jungle access and night shoots.
Suggested review rule:
Re-check the Rule of 3 whenever the weather changes, light fades, access changes, water rises,
thunder is heard, the unit moves location, or at least every 2 hours during unstable conditions.
Rule of 3 Input Table
| No. | Environment | Check / Hazard | Green | Amber | Red | User Selection |
|---|---|---|---|---|---|---|
| 1 | Pre-Start | Met / weather warning | No active warning | Weather watch, thunderstorm advisory, heavy rain possible | Severe weather, flood, lightning or strong wind warning | |
| 2 | Pre-Start / Jungle | Heavy rain over recent days | No significant recent rain | Rain over last 1–3 days | Several days of heavy rain, saturated ground, streams already high | |
| 3 | Pre-Start / Jungle | Recent landslide in area | No known recent landslide | Landslide reported nearby | Landslide on access route, same slope system, or area declared unsafe | |
| 4 | Pre-Start / Jungle | Recent deadfall / tree fall in area | No recent deadfall | Fallen branches or deadfall nearby | Multiple recent tree falls, cracking sounds, unstable canopy | |
| 5 | Pre-Start / Jungle | Location close to river / flood plain | Well away from river, stream or low ground | Near river, stream, drainage line or known flood-prone area | In flood plain, beside fast-rising river, or route likely to be cut off | |
| 6 | Pre-Start | Access / escape route | Clear and reliable | Single route, muddy, delayed or difficult | Blocked or likely to be blocked by flood, landslide or deadfall | |
| 6A | Pre-Start / All | Weather forecast for selected environment | Forecast suitable for planned jungle, urban or marine work | Weather may affect the planned environment, task or travel route | Forecast conditions are unsuitable for the planned environment or activity | |
| 6B | Pre-Start / All | Lightning risk | No thunderstorm activity forecast or observed | Thunderstorm possible, thunder heard in distance, or clouds building | Lightning nearby, storm overhead, exposed location, water work or metal structures exposed | |
| 6C | Pre-Start / All | Lighting / visibility | Good natural or artificial lighting; hazards visible | Low light, shadows, glare, rain, mist, smoke or darkness reducing visibility | People, vehicles, boats, slopes, water edges or hazards cannot be seen clearly | |
| 6D | Pre-Start / All | Medics available on set / location | Medic or first aid cover present and briefed | Medic delayed, limited cover, or unclear medical response arrangement | No medic / first aid cover for higher-risk or remote work | |
| 6E | Pre-Start / All | Emergency equipment | Relevant emergency equipment available, checked and accessible | Equipment present but incomplete, hard to access, or not fully checked | Critical emergency equipment missing, unsuitable or inaccessible | |
| 6F | Pre-Start / All | Communications check | Radios / phones / satellite device tested and working | Weak signal, limited coverage, spare batteries needed, or delayed check-ins | No reliable communication with base, crew, safety, medic or emergency support | |
| 6G | Pre-Start / All | Remote location / delayed response | Location close to support, access and emergency services | Remote area, delayed evacuation, limited road / boat access, or long response time | Remote location with no reliable comms, no medic, difficult evacuation or worsening weather | |
| 6H | Pre-Start / All | Emergency access / evacuation route | Emergency route identified, open and suitable for vehicle / boat / stretcher access | Evacuation route is slow, difficult, weather dependent or requires guide support | No safe evacuation route, route blocked, or casualty extraction not possible | |
| 7 | Jungle | Current rainfall | Dry or light passing rain | Heavy rain building or continuous rain | Intense rain, poor visibility, water rising | |
| 8 | Jungle | Flash flood signs | Streams normal | Water rising, flow increasing, water turning brown | Rapid rise, unsafe crossing, flood route blocked | |
| 9 | Jungle | Slope / terrain condition | Ground firm and stable | Saturated soil, erosion, small slips, cracks | Active movement, fresh cracks, slipping ground, rock or soil fall | |
| 10 | Jungle | Trees / canopy | Trees appear stable | Dead branches, leaning trees, movement in canopy | Cracking sounds, falling branches, tree movement, recent fall nearby | |
| 11 | Jungle | Thunderstorms / lightning | No thunder or storm signs | Thunder heard, dark cloud build-up | Lightning nearby, storm overhead, exposed ridge or water area | |
| 12 | Jungle | High winds | Calm or light wind | Wind moving canopy or branches | Branches falling, trees moving heavily, unsafe canopy | |
| 13 | Jungle | Visibility | Good visibility | Rain, mist or darkness reducing visibility | Route finding unsafe, team cannot see hazards clearly | |
| 14 | All | Team condition | Team alert, hydrated and capable | Fatigue, heat stress concern, reduced focus | Heat illness signs, injury, confusion, panic or exhaustion | |
| 15 | All | Communication | Reliable radio / phone / check-in | Weak signal or delayed check-ins | No contact, team separated, emergency response compromised | |
| 16 | Urban | Surface water / drainage | Drains clear, no ponding | Ponding water, blocked drains, water collecting | Road flooding, open drains hidden, fast-moving water | |
| 17 | Urban | Wind and loose objects | No loose materials | Signage, sheeting, hoarding or debris moving | Falling objects, roof sheets lifting, unstable temporary structures | |
| 18 | Urban | Traffic and visibility | Good visibility and traffic control | Heavy rain affects drivers or pedestrians | Traffic control ineffective, near misses, unsafe road conditions | |
| 19 | Urban | Electrical exposure | No exposed or wet electrical equipment | Temporary power near wet areas, wet cables | Live exposure, sparks, submerged electrical equipment | |
| 20 | Urban | Buildings / structures / roofs | Stable structures | Old roofs, loose tiles, damaged trees or unstable materials nearby | Collapse risk, falling materials, unsafe access | |
| 21 | Marine | Wind | Light wind | Wind increasing, boat handling affected | Unsafe to launch, return, transfer people or continue activity | |
| 22 | Marine | Waves / swell | Calm water | Choppy water, increasing swell | Boarding unsafe, boat unstable, capsize risk | |
| 23 | Marine | Lightning | No thunder or storm signs | Thunder heard, dark clouds building | Lightning nearby, storm approaching, exposed on water | |
| 24 | Marine | Marine visibility | Clear visibility | Rain reducing visibility | Cannot see shore, route, hazards or other boats | |
| 25 | Marine | Currents / water movement | Normal current | Stronger current, floating debris, water moving faster | Person-overboard recovery difficult, unsafe swim or transfer | |
| 26 | Marine | Return route | Safe return route | Return route exposed to worsening weather | Unable to safely return, land, dock or transfer |
Windy Weather Map
Use this panel to check live weather layers such as wind, rain/thunder, radar and clouds before applying the Rule of 3. This supports the pre-start check for Met / weather warnings and changing tropical conditions.
Official Southeast Asia Weather Forecast Links
Select a country to open the relevant official forecast or warning page. Use this as part of the pre-start weather check before completing the Rule of 3.
Rule of 3 use:
If the official forecast or warning page shows heavy rain, thunderstorms, lightning risk, flooding, strong winds,
poor visibility, rough seas or severe weather, select Amber or Red in the relevant fields below.
Example: Kuala Lumpur 3.1390
Example: Kuala Lumpur 101.6869
How to use with the Rule of 3:
Windy should not replace local authority warnings or field observations. Use it as an extra pre-start check.
If Windy shows heavy rain, thunderstorms, strong wind, gusts, or worsening weather moving toward the site, select Amber or Red in the relevant Rule of 3 fields.
Action Guidance
| Status | Trigger | Recommended Action |
|---|---|---|
| Green | 0 Ambers and no Reds | Continue with normal controls and keep monitoring. |
| Amber | 1 Amber and no Reds | Proceed with caution. Brief the team and increase monitoring. |
| Strong Amber | 2 Ambers and no Reds | Stop and reassess. Add controls, change route, reduce exposure or delay. |
| Red | 3 Ambers, any Red, or automatic escalation | Stop the activity. Delay, relocate, change the plan or withdraw to a safer area. |
