Weather

Temperature:
Average temp... -26.7°C / -16.1°F
Maximum temp... -24.0°C / -11.2°F on day 7
Minimum temp... -29.8°C / -21.6°F on day 1

Wind:
Average wind speed.......... 7.8 mph or 6.8 knots
Prevailing wind direction... Grid Northeast
Maximum wind speed.......... 28 mph or 24 knots on day 3
Maximum wind direction...... Grid Northeast
Average vectored wind....... 037 degrees at 6.1 knots

Station Pressure:
Average pressure... 687.8 mb
Highest pressure... 690.8 mb on day 4
Lowest pressure.... 684.5 mb on days 1 and 2

Physio-altitude:
Average physio-alt = 10335 ft/ 3150 m
Highest physio-alt = 10459 ft/ 3188 m on days 1 and 2
Lowest physio-alt= 10223 ft/ 3116 m on day 4

Sky Cover:
Average cloud cover (8ths)... 2
Days clear................... 4
Days partly cloudy........... 3
Days cloudy.................. 0

Sunshine:
Sunset on 22 March 2013
Average hours per day... 22.3
Percent of possible..... 93

Visibility:
0 days with visibility of 1/4 mile or less.

Balloon flight data:
Number of soundings for the week..... 14
Average height of soundings.......... 26.9 mb, or 25287 meters
Highest sounding..................... 11.5 mb, or 30982 meterson day 05/00Z flight
0 soundings were missed.

**RECORDS**
Day 7: The average daily wind speed of 2.8 kts/3.3 mph broke the previous lowest average daily wind speed record of 3.6 kts/4.1 mph set in 1997.