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COLONIAL AIRLINES, INC.

LA GUARDIA FIELD

NEW YORK

TO: All Flight and Operations Personnel

FROM: Flight Superintendent

SUBJECT: CHANGES IN REPORTING WEATHER

Effective January 1, 1949, the following changes in reporting weather will be implemented by the U.S. Weather Bureau:

1. Cloud heights and ceilings of 10,000 feet or more will be reported in hundreds of feet to the nearest 1,000 feet, in a manner similar to that in which heights below this value have been previously reported. Slants will no longer be used to indicate cloud heights.

Examples:

[[2 column table]]

|OLD FORM OF REPORT|NEW FORM|
|1. DCA ⊕/15+|DCA M140⊕15+|
|2. DCA (|)/10|DCA 180(|)10|
|3. DCA E45⊕/(||)|DCA E45⊕(||)E150⊕|

J. E. Reinke

JER:jo