MMUCC Training

C10: Weather Conditions


The prevailing atmospheric conditions that existed at the time of the crash.

(From State Police Instruction Manuals): This element should be coded without regard to whether or not weather conditions contributed to the cause of the accident.

Element Attributes

This element is divided into Subfield 1 and Subfield 2. They share the same attributes for recording up to two applicable weather conditions.

Subfield 1 Weather Conditions:
  1. Clear
  2. Cloudy
  3. Fog, Smog, Smoke
  4. Rain
  5. Sleet, Hail (freezing rain or drizzle)
Subfield 2 Weather Conditions:
  1. Snow
  2. Blowing Snow
  3. Severe Crosswinds
  4. Blowing Sand, Soil, Dirt
  5. Other
  6. Unknown

(From State Police Instruction Manuals): if the code "Other" is used it is recommended that it be explained in the narrative.


Important for management/administration and evaluation. Critical for prevention programs and engineering evaluations.