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Il. 30,000 Ft Cold Low Aloft
The differente between this situation and .trade weather, as far as winds are con-
cerned, is most marked in the atmosphere above 30.000 feet. The lower easterlies turn
es before to westerlies, but these westerlies are stronger and form part of a very lorge
cyclonic circulation which lies more of less stationary between Eniwetok - Bikini and
Wake Island. The circulatory system is known as on upper level tropical cyclone. Winds
as high as 100 knots at 45,000 feet have been reported over the northern Marshalls during
such situations. Once established, on upper level cyclone may remain in situ for 10
days before moving out into higher latitudes. Even though there may be temporary clearance far a day or two at some stations, the weather iemains generally unsettled as long
as the cyclone lies between Eniwetok and Woke. There may be a very genasal deterioration in the weather as the stationary ‘cyclonic circulation Intensifies and-reaches lower
cand lower levels. Following the movement of the upper level cyclone into -higher
latitudes, the trade situation will become -re-estoblished; this re>establishment.is often
-accomponled.by.a sudden and dramatic.imp:ovement.in the weather...
The third type of situation.is characterized by winds In the lower atmosphere which
fluctuate .between northeast and southeast in the nosthesn Marshalls .ond between.
Ss