text: Voice Message Format Templates
  CHEMICAL DOWNWIND MESSAGE [CDM]
  REPORT NUMBER: C050 {USTMF #J020}
  GENERAL INSTRUCTIONS: Use to transmit warning of potential hazards from a biological or chemical attack.
  The CDM provides the required weather information/data for a six hour period. Reference: TM 3-11.32.
  LINE 1 – AO _____________________________________________________________ (area of operations affected)
  LINE 2 – DATE AND TIME _______________________________________________________ ((DTG when message received)
  LINE 3 – CDM START TIME _____________________________________________________ (DTG forecast begins)
  WHISKEY MIKE _________________________________________________________________ (line provides two hour weather
  data)
  XRAY MIKE ____________________________________________________________________ (line provides two hour weather
  data)
  YANKEE MIKE _______________________________________________________ (line provides two hour weather
  data)
  LINE 4 – AUTHENTICATION __________________________________ (report authentication)
  **The CDM is complete at line 4. The message receiver uses the additional lines of 5 through 13 to organize the
  report.
  LINE 5 – DIRECTION _________________________________________ (downwind direction in degrees)
  LINE 6 – WIND SPEED ________________________________________ (wind speed in KM/MPH)
  LINE 7 – AIR STABILITY _____________________________________ (air stability category:
  1 = very unstable [U]
  2 = unstable [U]
  3 = slightly unstable [U]
  4 = neutral [N]
  5 = slightly stable [S]
  6 = slightly stable [S]
  7 = very stable [S])
  LINE 8 – TEMPERATURE _____________________________________ (temperature code:
  05 5 DEG C
  04 4 DEG C
  03 3 DEG C
  02 2 DEG C
  01 1 DEG C
  00 0 DEG C
  51 -1 DEG C
  52 -2 DEG C
  53 -3 DEG C
  54 -4 DEG C
  55 -5 DEG C
  56 -6 DEG C)
  LINE 9 – HUMIDITY __________________________________________ (humidity code:
  0 = 0-9%
  1 = 10-19%
  2 = 20-29%
  3 = 30-39%
  4 = 40-49%
  5 = 50-59%
  6 = 60-69%
  7 =70-79%
  8 = 80-89%
  9 = 90-100%)
  **Continued on next page.