An Objective Method of Forecasting the Occurrence of Low Clouds in the McChord-Seattle Area During the Summer Months

Major R. M. Kinzebach USAFR, McChord AFB, Tacoma, Washington

Search for other papers by Major R. M. Kinzebach in
Current site
Google Scholar
PubMed
Close
Full access

This paper presents an objective method of forecasting advective stratus and other low clouds during the summer months in the McChord-Seattle area. A relationship is shown between the 1630P pressure at North Bend, Oregon and Seattle, Washington, and the inland movement of stratus and the occurrence of other low clouds. Higher 1630P pressure at North Bend, beginning at a critical positive difference, favors the occurrence of low clouds the following day; higher 1630P pressure at Seattle, at a critical negative difference, favors clear skies or fog formation, with higher values reaching 100% verification.

* Present address: 1400 South Josephine Ave., Denver 10, Col.

This paper presents an objective method of forecasting advective stratus and other low clouds during the summer months in the McChord-Seattle area. A relationship is shown between the 1630P pressure at North Bend, Oregon and Seattle, Washington, and the inland movement of stratus and the occurrence of other low clouds. Higher 1630P pressure at North Bend, beginning at a critical positive difference, favors the occurrence of low clouds the following day; higher 1630P pressure at Seattle, at a critical negative difference, favors clear skies or fog formation, with higher values reaching 100% verification.

* Present address: 1400 South Josephine Ave., Denver 10, Col.

Save