Mountain war time and could be seen from three states away. It was 11ft long, 5ft wide, weighed 10,200lbs and was shaped like a pineapple. Based on weather conditions, Hubbard decided the best date for the test would be in between July 18th-21st or July 12th-14th, General Leslie Groves chose July 16th in the end. At the 2a.m. meeting Hubbard told Groves that the skies would be clear by dawn, but the weather was still bad so the meteorologist, had them reschedule for 5:30 detonation. Observers of the skies recorded; clear above and to the east of zero point: visibility: greater than 60 miles; surface wind: ESE 3-6 mph below 500ft; temperature 68 degrees Fahrenheit; dew point 61 degrees Fahrenheit; relative humidity; 77 percent. Surface pressure 851.7mb. In February 1951 weather-wise article described the situation: “as foul as any meteorologist could imagine for such a monumental event”. At 8:00p.m. On July 15th localized thunderstorms moved in to the area, 30mph winds proceeded until 11:30p.m. About 90 minutes before the scheduled time, the “zero point” for the test hit, where the detonation was to take place. Winds were very light and up about 40,000ft at 4:45a.m. The sky cover was broken and became scattered by 5:15a.m., as Hubbard predicted, skies became clear. Hubbard wrote “an operation such as the trinity nuclear explosion requires a precision forecast about 10 tens in advance… It is suggested that future operations be safeguarded
Mountain war time and could be seen from three states away. It was 11ft long, 5ft wide, weighed 10,200lbs and was shaped like a pineapple. Based on weather conditions, Hubbard decided the best date for the test would be in between July 18th-21st or July 12th-14th, General Leslie Groves chose July 16th in the end. At the 2a.m. meeting Hubbard told Groves that the skies would be clear by dawn, but the weather was still bad so the meteorologist, had them reschedule for 5:30 detonation. Observers of the skies recorded; clear above and to the east of zero point: visibility: greater than 60 miles; surface wind: ESE 3-6 mph below 500ft; temperature 68 degrees Fahrenheit; dew point 61 degrees Fahrenheit; relative humidity; 77 percent. Surface pressure 851.7mb. In February 1951 weather-wise article described the situation: “as foul as any meteorologist could imagine for such a monumental event”. At 8:00p.m. On July 15th localized thunderstorms moved in to the area, 30mph winds proceeded until 11:30p.m. About 90 minutes before the scheduled time, the “zero point” for the test hit, where the detonation was to take place. Winds were very light and up about 40,000ft at 4:45a.m. The sky cover was broken and became scattered by 5:15a.m., as Hubbard predicted, skies became clear. Hubbard wrote “an operation such as the trinity nuclear explosion requires a precision forecast about 10 tens in advance… It is suggested that future operations be safeguarded