Description and Use of 3rd Weather Wing Onset-Duration Tables.
Aerospace sciences technical note,
WEATHER WING (3RD) OFFUTT AFB NEBR
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The note describes the computation and display of hourly onset-duration tables based upon long periods of sequential hourly weather observations. Initial data are stratified by weather parameter, category and hour of initial occurrence. Typical parameters are ceiling or visibility. Categories consist of discrete increments of ceiling height or visibility. The tables for each hour contain the number of times a particular parameter and category began onset, the category at the previous hour, how many hours this condition persisted up to 6 hours and the category subsequent to the occurrence. An example of the intended use of the tables is presented. Author