Fire Danger Index

calculator

 Online FDI Calculator

FIRE DANGER RATING SYSTEM, FIRE CONTROL AND STANDBY STATE

Fire Alert Stage

BLUE

GREEN

YELLOW

ORANGE

RED

FDI

0 - 20

21 - 45

46 - 60

61 - 75

75 - 100

Fire Behaviour

SAFE

MODERATE

DANGEROUS

VERY DANGEROUS

EXTREMELY DANGEROUS

Flame Length

0 - 1

1 - 1.2

1.2 - 1.8

1.8 - 2.4

2.4 PLUS

Fire Controllability Guide

If started they spread very slowly and may go out without suppression forces. There is little flaming combustion and intensity is low. Control is readily achieved and little or no mop up is required.

Ignition may take place near prolonged heat sources. Speed is slow in forests, moderate in open areas. Light surface fires with low flames. Control is readily achieved with direct manual attack with minimum forces. Steep, exposed slopes may require light mop up.

Open flame will start fires. Mature grasslands and forest litter will burn readily. Spread is moderate in forests and fast in exposed areas. Fires burn on surface with moderate flame heights. Fight fires with direct attack and all available resources including aircraft. Light to moderate mop up.

Ignition can occur readily with fast spread in forests. Grass fire behaviour will be extreme. Fires will be very hot with crowning and short to medium spotting. Direct attack on the head may not be possible requiring indirect methods on flanks. All available resources must be used with extended mop up. Beware of wind change!!!

Ignition can occur from sparks. Fires will be extremely hot with fast rate of spread. Control may not be possible during day due to long range spotting and crowning. Suppression forces should limit efforts to limiting lateral spread. Damage potential total. All available resources must be used with extended mop up and careful attention to areas that can flare up. Beware of wind change!!!

Controlled burning operations

Control burns can be executed if burning prohibitions and BOPs allow

Control burns can be executed if burning prohibitions and BOPs allow

No controlled burns if FDI forecast for the day exceeds 50.

No control burns of any nature

No control burns of any nature

Fire Fighting Crew Activation - fire on members land

  • 1. Landowner
  • 2. Additional neighbouring member resources if requested
  • 1. Landowner
  • 2. Additional neighbouring member resources if requested
  • 1. All available aircraft
  • 2. Landowner
  • 3. Additional neighbouring resources if requested
  • 1. All available aircraft
  • 2. Closest initial attack resource on standby.
  • 3. Landowner
  • 4. All neighbouring resources.
  • 1. All available aircraft
  • 2. Closest initial attack resource on standby.
  • 3. Landowner
  • 4. All neighbourning resources.

Fire Duty

Foresters

Normal - good time to take time off if raining and standby forester available.

Normal - remain on duty in radio and cell contact. Report all movements to ops.

Alert - remain on duty in radio and cell contact. Know where all teams are, have strike crews on vehicle. Report all movements to ops.

Danger - remain on duty in radio and cell contact. Report all movements to ops. Know where all teams are, have strike crews on vehicle and move to initial attack staging areas

Extreme Danger - remain on duty in radio and cell contact. Report all movements to ops. Know where all teams are, have strike crews on vehicle and move to danger areas. Keep up to date on weather.

Proto Teams

Working hours

Fire fighting units available with driver. Report all movements to ops.

After hours

Standby in village

Working hours

Fire fighting units available with driver. Report all movements to ops.

After hours

Standby in village

Working hours

Fire fighting units available with driver. Report all movements to ops.

After hours

Standby in village. Full crews

Working hours

Fire fighting units available with driver. Full crews and at danger standby points. Report all movements to ops.

After hours

Standby in village. Full crews

Working hours

Fire fighting units available with driver. Full crews and at danger standby points Report all movements to ops.

After hours

Standby in village. Full crews

Ops day staff

Normal. 07:00 to 16:30 - good time to take time off if raining and standby operator available.

Normal. 07:00 to 16:30 unless fire is currently burning. FDIs every 2 hours.

Alert. 06:30 to 17:30 unless fire is currently burning. FDIs every hour. Remain in contact at night.

Danger. Sunrise to sunset, unless fire is currently burning or aircraft are still flying. FDIs every hour. Remain in contact at night. Be super aware of weather.

Extreme Danger. Sunrise to sunset. If fire is currently burning or aircraft are still flying hand over to suitably qualified person - management only. FDIs every hour. Be super aware of weather.

Spotter

Airborne 25 min

Airborne 15 min

Airborne 5 min. On standby at airfield

Immediate take off. Patrolling FDI above 60

Continuous patrolling. Only stop for fuel.

Bomber

Airborne 25 min

Airborne 15 min

Airborne 5 min. On standby at airfield

Immediate take off.

Immediate take off

Silviculture contractors

Normal

Normal

Normal - in radio contact

In radio contact. Aware of conditions. Crews and water tankers available for mop up.

Stop all work and withdraw. Available for mop up. Crews and water tankers available for mop up.

Harvesting Contractors

Normal

Normal

Normal - in radio contact

In radio contact. Aware of conditions.

Stop all work and withdraw

Mechanic

Normal

Normal

Notify agents

Notify agents

Notify agents

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Contact Us

Ops Room
Tel. 035 580 4220
Tel. 035 580 4713
Fax. 086 624 4021
Fire Protection Officer 
Cell. 082 821 7779
zfpa@kwn.co.za

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