11 October, 2001

Weekly Climate Summary - South Pole Station, Antarctica

05 October 2001 through 11 October 2001 UTC

Temperature:

Average temp... -55.6°C / -68.1°F

Maximum temp... -46.2°C / -51.2°F on day 9

Minimum temp... -63.9°C / -83.0°F on day 8

Wind:

Average wind speed.......... 12.0 mph or 10.4 knots

Prevailing wind direction... Grid East

Maximum wind speed.......... 25 mph or 22 knots on day 9

Maximum wind direction...... Grid North

Average vectored wind....... 059 degrees at 9.2 knots

Station Pressure:

Average pressure... 682.2 mbs

Highest pressure... 688.0 mbs on day 9

Lowest pressure.... 671.1 mbs on day 11

Physio-altitude:

Average physio-alt = 10545 ft/ 3214 m

Highest physio-alt = 10966 ft/ 3342 m on day 11

Lowest physio-alt = 10328 ft/ 3148 m on day 9

Sky Cover:

Average cloud cover (8ths)... 4

Days clear................... 3

Days partly cloudy........... 2

Days cloudy.................. 2

Sunshine:

Sunset on 22 March 2002

Average hours per day... 6.4

Percent of possible..... 27

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.......... 113.2 mb, or 16260 meters Highest sounding..................... 7.5 mb, or 29921 meters

on day 08/00Z flight

0 soundings were missed.

14 soundings were terminated due to balloon burst.

**RECORDS**

No records were tied or broken during the week.

Katie Wallet

Supervisor of Science

Spotsylvania County Schools