Nrm wind scale
From Glossary of Meteorology
NRM wind scale
A wind scale adapted by the U.S. Forest Service for use in the forested areas of the northern Rocky Mountains (sometimes abbreviated NRM).
It is an adaptation of the Beaufort wind scale. The difference between these two scales lies in the specification of the visual effects of wind; the force numbers and the corresponding wind speeds are the same in both.
Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact firstname.lastname@example.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.