16 February 2001 through 22 February 2001 UTC Temperatures: Average Temp... -35.9 C/-32.6 F Maximum Temp... -26.2 C/-15.2 F on day 21 Minimum Temp... -43.8 C/-46.8 F on day 22 Sky Cover: Avg Sky Cover (8ths)... 7 Days clear............. 0 Days partly cloudy..... 1 Days cloudy............ 6 Sunshine: Sunset on 21 March Average hours/day..... 7.1 Percent of possible... 29 Station Pressure (millibars): Avg pressure........ 689.1 mb Highest pressure.... 691.8 mb on day 17 Lowest pressure..... 686.5 mb on day 19 Physio-altitude in feet and meters: Average physio-alt = 10287 ft/ 3135 m Highest physio-alt = 10384 ft/ 3165 m on day 19 Lowest physio-alt = 10186 ft/ 3105 m on day 17 Visibility: 0 days with visibility of 1/4 mile or less. Wind: Avg wind speed............ 8.8 mph or 7.7 kts Max gust.................. 24 mph or 21 kts on day 20 Max gust direction........ from Grid Northwest Vectored wind direction... 018 degrees Vectored wind speed....... 4.3 kts Prevailing direction...... Grid East Balloon flight data: Number of soundings for the period... 14 Average height of soundings.......... 9.2 mb Highest sounding..................... 2.4 mb, or 41410 meters on day 19/00Z flight 0 soundings were missed. 13 soundings were terminated due to balloon burst. 1 sounding was terminated due to ground equipment failure. **Records** Day 22 - A new daily maximum temperature of -26.4 C broke the previous daily record of -28.1 C set in 1986.