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Weather: Temp RH and Dew Point Tables

  1. Full Set PDF
  2. Elevation 0-500 feet (0-300 feet in Alaska), 30 in.
  3. Elevation 501-1,900 feet (301-1,700 feet in Alaska), 29 in.
  4. Elevation 1,901-3,900 feet (1,701-3,600 feet in Alaska), 27 in.
  5. Elevation 3,901-6,100 feet (3,601-5,700 feet in Alaska), 25 in.
  6. Elevation 6,101-8,500 feet (5,701-7,900 feet in Alaska), 23 in.
  7. Elevation 8,501-11,000 feet (above 7,900 feet in Alaska), 21 in.

The following tables calculate Dew Point and Relative Humidity based on the observed wet bulb and dry bulb temperatures and the elevation at the site of the observation. These can be calculated automatically using Wildland Fire RH Calculator Apps for iOS and Android available for free.

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Full Set PDF

Click here to obtain a full set of tables in PDF form. Another available tool is an online Dew Point calculator.

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Elevation 0-500 feet (0-300 feet in Alaska), 30 in.

Dry Bulb Temp 41-60

Psychometric Tables Pressure 30 in, DB Temp 41-60

Dry Bulb Temp 61-80

Psychometric Tables Pressure 30 In Mercury, DB Temp 61-80

Dry Bulb Temp 81-100

Psychometric Table, Pressure 30 in, DB Temp 81-100

Dry Bulb Temp 101-119

Psychometric Table, Pressure 30 in, DB Temp 81-100

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Elevation 501-1,900 feet (301-1,700 feet in Alaska), 29 in.

Dry Bulb Temp 41-60

Psychometric Table, Pressure 29 in, DB Temp 41-60

Dry Bulb Temp 61-80

Psychometric Table, Pressure 29 in, DB Temp 61-80

Dry Bulb Temp 81-100

Psychometric Table, Pressure 29 in, DB Temp 81-100

Dry Bulb Temp 101-119

Psychometric Table, Pressure 29 in, DB Temp 101-119

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Elevation 1,901-3,900 feet (1,701-3,600 feet in Alaska), 27 in.

Dry Bulb Temp 41-60

Psychometric Table, Pressure 27 in, DB Temp 41-60

Dry Bulb Temp 61-80

Psychometric Table, Pressure 27 in, DB Temp 61-80

Dry Bulb Temp 81-100

Psychometric Table, Pressure 27 in, DB Temp 81-100

Dry Bulb Temp 101-119

Psychometric Table, Pressure 27 in, DB Temp 101-119

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Elevation 3,901-6,100 feet (3,601-5,700 feet in Alaska), 25 in.

Dry Bulb Temp 41-60

Psychometric Table, Pressure 25 in, DB Temp 41-60

Dry Bulb Temp 61-80

Psychometric Table, Pressure 25 in, DB Temp 61-80

Dry Bulb Temp 81-100

Psychometric Table, Pressure 25 in, DB Temp 81-100

Dry Bulb Temp 101-119

Psychometric Tables Pressure 25 in, DB Temp 101-119

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Elevation 6,101-8,500 feet (5,701-7,900 feet in Alaska), 23 in.

Dry Bulb Temp 31-50

Psychometric Table, Pressure 23 in, DB Temp 31-50

Dry Bulb Temp 51-70

Psychometric Table, Pressure 23 in, DB Temp 51-70

Dry Bulb Temp 71-90

Psychometric Table, Pressure 23 in, DB Temp 71-90

Dry Bulb Temp 91-110

Psychometric Table, Pressure 23 in, DB Temp 91-109

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Elevation 8,501-11,000 feet (above 7,900 feet in Alaska), 21 in.

Dry Bulb Temp 31-50

Psychometric Table, Pressure 21 in, DB Temp 31-50

Dry Bulb Temp 51-70

Psychometric Table, Pressure 21 in, DB Temp 51-70

Dry Bulb Temp 71-90

Psychometric Table, Pressure 21 in, DB Temp 71-90

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NWCG Standards for Wildland Fire Chainsaw Operations, PMS 212, and Next Generation Position Task Book for Basic Faller Are Now Available

Date: April 14, 2025
Questions?  Please contact:
Hazard Tree and Tree Felling Subcommittee

The updated NWCG Standards for Wildland Fire Chainsaw Operations, PMS 212, and NWCG Position Task Book for Basic Faller (FAL3), PMS 311-19 are now available.

The NWCG Standards for Wildland Fire Chainsaw Operations, PMS 212 includes position standards designed to be used in conjunction with the Next Generation Position Task Book (Next Gen PTB). The Next Gen PTB for Basic Faller (FAL3) includes an evaluation guide with suggested rating elements to consider when assessing trainees.

References:

NWCG Standards For Wildland Fire Chainsaw Operations, PMS 212

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The Risk Management Committee (RMC) serves as the position steward for all Safety Officer incident positions and continues to improve position standards, training, and naming conventions. The implementation of Complex Incident Management (CIM) required changes to position titles. RMC collaborated with the NWCG Incident Position Standards Committee (IPSC) to propose and implement these updates. 

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RMC Memo 25-01: Summary of Updates to Safety Officer Positions 

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Date: April 8, 2025
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PMS 412 provides guidance for wildland fire investigations. This guide outlines recommended procedures, practices, techniques, and methods to promote a systematic approach. The last update to this publication was in 2016.

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NWCG Guide to Wildland Fire Origin and Cause Determination PMS 412

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The updated NWCG Standards for Airtanker Base Operations (SABO), PMS 508 standardizes operations and procedures at interagency airtanker bases to ensure safe, efficient, and effective operations in support of interagency goals and objectives.

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NWCG Standards for Airtanker Base Operations, PMS 508