b addition to the above facilities,a detailed weather warning network for the ~ed~te ~ea of Eniwetok wallestabliahe~ This net- work was for the purpose of forecastingthe time of beginn~ - &id end- of showers as well ae their tapeedand direction, developmentand dissipation. The sources of data for the foreoasthg were weather reconnaissanceaircreft reports, rader reports from these aircr<t, and the radar reports from the !IaekForce ahiPs iwludiw the Mt. McK@ley. Wind observationsin the local area were taken very frequently. me Eniwetok weather station was equipped with an SC%5W to the SCR658. rack in addition Qdrogen generator supplied the bulk of the gas for the balloons, but because’of the frequenoy of balloon runs, the hYdro@n supply was augmented by bottled helium. Upper air winds were observed as frequently as every two hours for the critical days to insure adequate informationfor the radiologicalsafety units. To get high altitudes, MOO gram balloons were included in the equipment supplied to the stw tions. These balloons proved to be extremely useful. Frequent ascents reaching heights of 100,000 feet and above were obtained at certain 8tations. A schedule of the wind runs in the local area during the critical periods follows: +2 xRAYlfIIJm an TOKEM~ (NTE ZEBRAMIMUS OEE PRAOTIGllRHS MXZitEOME ~TIrn ~ LoWL~ XR4Y DAY YOKE DAY ZEBRA UT PE40TIOE D4YS @LTIMESABE Lou] lZOO Albemarle 0100 Bairoko ls SECTIOSi XII 1