SOUTH POLE STATION ANTARCTICA. APRIL 2001 CLIMATE SUMMARY.

Temperature:
Avg temp................ -60.2 C /-76.4 F
Departure from normal... -2.7 C /-4.9 F
Max temp................ -45.0 C /-49.0 F on day 5 
Min temp................ -72.5 C /-98.5 F on day 28 

Sky cover:
Avg cloud cover (8ths)... 02
Days clear............... 18
Days partly cloudy....... 11
Days cloudy.............. 01

Wind:
Avg wind speed.............. 12.1 mph or 10.5 kts.
Prevailing wind direction... Grid East or 110 degrees.
Max wind.................... 40 mph or 35 kts on day 01.
Max wind direction.......... Grid North.
Avg vectored wind........... 066 degrees at 8.4 knots.

Station pressure:
Avg pressure............ 676.9 mbs or 19.989 in. Hg.
Departure from normal... -3.6 mbs or -0.106 in. Hg.
Highest pressure........ 688.2 mbs or 20.323 in. Hg. on day 03
Lowest pressure......... 663.0 mbs or 19.578 in. Hg. on day 27

Sunshine:
Sunrise on 22 September 2001
Average hours/day........ 0.0
Percent of possible...... 0%

Snowfall..... Trace; average net change at snow stakes +0.196 inches.

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

Balloon flight data:
Number of soundings for the month... 38 
Avg height of soundings............. 79.9 mbs or 17348 meters above msl.
Highest sounding.................... 28.9 mbs or 22977 meters above msl.
                                     on the day 07/00z sounding.

Remarks:
0 soundings were missed.
11 soundings were terminated above 50 mbs.
21 soundings were terminated between 50 and 100 mbs.
6 soundings were terminated below 100 mbs.

Records:
Day 22 - The peak gust of 26 kts / 30 mph from 030 tied the previous daily record
         set in 1961.

PREPARED BY: Nathan Tift and Meghan Prentiss