METEOROLOGY FLIGHT PLANNING
The heading of the Aviation Severe Weather Watch Bulletins consists of a few lines of
information including the station identifier of the message originator (KMKC), the teletype
identifier (WW), the date-time group of issue (181845), the bulletin number (29), and the time of
issue (1245 PM CST).
The bulletin is arranged in several paragraphs giving such information as the area of coverage, the
effective time of the watch, the expected type of severe weather, the mean wind vector, and any
amplifying remarks deemed necessary.
Whenever possible, wording in teletype presentations is shortened by abbreviating words or
phrases according to the FAA Contractions Manual. Omitting the vowels usually shortens words
or phrases. For further information on word or phrase contractions, refer to Appendix B of this
WW Issuing Requirements
Aviation Severe Weather Watch Bulletins (Figure 3-1) are issued for two types of expected severe
Funnel clouds or tornadoes.
Severe thunderstorms, defined by frequent lightning and one or more of the following:
50 knots of wind or greater;
3/4 inch diameter hail or larger
MILITARY RESTRICTIONS REGARDING SEVERE WEATHER WATCHES
Since WWs restrict the operation of military aircraft, aviators should always first check for WWs when
beginning the flight planning process. Otherwise, you may plan a flight and find out during the weather
brief that you are unable to fly that plan.
SEVERE WEATHER WATCHES, MILITARY ADVISORIES, AND PIREPS