13 April 2001 through 19 April 2001 UTC Temperatures: Avg Temp...-63.0(C)/-81.4(F) Max Temp...-54.6(C)/-66.3(F) on day 15 Min Temp...-68.8(C)/-91.8(F) on day 18 Sky Cover: Avg Sky Cover (8ths)... 3 Days clear............. 4 Days partly cloudy..... 2 Days cloudy............ 1 Sunshine: Sunrise on 22 September 2001 Avg hours/day......... 0.0 Percent of possible... 0 Station Pressure (millibars): Avg pressure........ 674.3 mb Highest pressure.... 679.2 mb on day 13 Lowest pressure..... 670.4 mb on day 19 Physio-altitude in feet and meters: Average physio-alt = 10844 ft/ 3305 m Highest physio-alt = 10992 ft/ 3350 m on day 19 Lowest physio-alt = 10658 ft/ 3249 m on day 13 Visibility: 0 days with visibility of 1/4 mile or less. Wind: Avg wind speed............ 10.4 mph or 9.1 kts Max gust.................. 21 mph or 18 kts on day 13 Max gust direction........ from Grid East Vectored wind direction... 088 degrees Vectored wind speed....... 8.7 kts Prevailing direction...... Grid East Balloon flight data: Number of soundings for the period... 9 Avg hgt of soundings................. 66.6 mb, or 17929 meters Highest sounding..................... 45.5 mb, or 19992 meters on day 15/00Z flight. 0 soundings were missed. 8 soundings were terminated due to balloon burst. 1 sounding was terminated due to flight equipment failure. **RECORDS** No records were tied or broken during the week.