Narrative Summary - November 2000

The average temperature for November 2000 was much below normal, averaging 34.0ºF, 6.2º
below normal (40.2ºF), and the 4th coldest November on record. The warmest November occurred
in 1990 and averaged 46.5ºF, while the coolest, in 1985, averaged 24.8ºF. Only two days during
November 2000 had average temperatures above normal. No new daily temperature records were
established during the month.

Precipitation for November 2000 was 1.08 in., 119% of normal (0.91 in.). The wettest
November, in 1996, received 2.67 in., while the driest, in 1976 years, received only a trace.
There was 1.2 in. of snow recorded during the month, compared to a November normal of 1.8
in. The snowiest November, in 1985, received 18.3 in., while numerous Novembers, as
recently as 1999, have received no snowfall. The first snow for the season was observed on
November 9, compared to a normal date of November 24, while the first measurable snowfall
was recorded on November 23, compared to a normal date of December 3. Total precipitation
since January 1 was 7.41 in., 142% of normal (5.23 in.).

The average wind speed for November 2000 was 5.4 miles per hour (mph), 1.0 mph below
normal (6.4 mph). The windiest November on record averaged 10.0 mph (1990), while the
November with the lightest winds (1956) averaged 2.9 mph. The peak gust for the month was
55 mph on November 4. The record wind gust for November was 67 mph in 1993.

Autumn 2000 (September, October and November) was much cooler than normal, averaging
49.9ºF, 3.0º below normal (52.9ºF) and the 5th coolest autumn on record. The coolest autumn,
in 1985, averaged 44.5ºF, while the warmest, in 1990, averaged 57.1ºF. Precipitation for
autumn 2000 totaled 2.21 in., 138% of normal (1.60 in.). The wettest autumn, in 1973,
received 4.79 in., while the driest, in 1976, received only 0.04 in.

The monthly climatological data summaries, as well as other information, are available
on the Internet. Address: http://etd.pnl.gov:2080/HMS/. Hanford Site personnel can
access the HMS Intranet site at: http://hms.rl.gov/

For additional information contact:
Ken Burk373-3215
Dana Hoitink372-6414

Note: The information in this summary pertains specifically to
the Hanford Meteorology Station (HMS), which is located
approximately 25 miles northwest of Richland, Washington. No
attempt should be made to infer meteorological conditions at other
locations from these data.