IRFP-01
Metro Review
e. AIRMET message texts
(1) Text portion of each AIRMET message within a bulletin
shall contain the available details about the phenomenon
conditions which have met or are expected to meet
AIRMET or significance criteria
(2) Details shall include whether conditions are occurring or
forecast to occur, their causes, their vertical extent, any
changes expected during the AIRMET valid period, and
remarks concerning the time of onset and/or cessation of
conditions
11. Military Weather Advisory (MWA)
Fig 34: Military
Weather Advisory
a. Prepared and issued by the Air Force Global Weather Center
(MWA)
(AFGWC)
b. Transmitted twice a day with a 12-hour Military Weather
Advisory, which is a forecast of possible severe weather
c.
Two versions produced
(1) Teletype
(2) Facsimile
d. The forecast is coded as follows:
(1) Red - tornadoes, waterspouts, or funnel clouds
(2) Blue - severe thunderstorms (maximum wind gusts of
50 kts or greater and/or hail, if any, 3/4-inch or greater in
diameter) and locally damaging windstorms
(3) Green - moderate thunderstorms (maximum wind gusts of
35 kts or greater, but less than 50 kts; and/or hail, if any,
1/2-inch or greater in diameter, but less than 3/4-inch in
diameter)
(4) Orange - thunderstorms (maximum wind gusts less than
35 kts and/or hail, if any, less than 1/2-inch in diameter)
(5) Black - strong surface winds (35 kts or more and not
associated with thunderstorms)
(6) Purple - heavy rain (2 inches or more in 12 hours or less)
(7) Hatched purple - heavy snow (2 or more inches in
12 hours or less)
(8) Brown - freezing precipitation
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