Narrative Summary - June 2004

The average temperature for June 2004 was warmer than normal, averaging 70.4ºF, 1.1º above normal (69.3ºF).
The warmest June occurred in 1992 and averaged 76.8ºF, while the coolest, in 1953, averaged 63.0?F. There were
12 days with maximum temperatures >= 90ºF and 3 days >= 100ºF, compared to June normals of 8 days and one day
respectively for those categories. The year-to-date totals are also 12 days >= 90ºF and 3 days >=100ºF, compared to
year-to-date normals of 11 days and one day respectively. No daily temperatures records were established in June. 

                              New         Old
Date          Category        Record     Record       Year
none

Precipitation for June 2004 totaled 0.82 inch, 200% of normal (0.41 inch). The wettest June, in 1950, received
2.92 inches; and the driest, in 2003 and prior years, received only a trace. There were 3 thunderstorms
recorded in June, compared to a normal of 2 and a record of 8 in 1972 and earlier years. Total precipitation for
2004 (through June) is 5.32 inches, 151% of normal (3.53 inches).

The average wind speed for June 2004 was 8.2 miles per hour (mph), 0.9 mph below normal (9.1 mph). The
windiest June on record averaged 10.7 mph (1983 and earlier years), while the June with the lightest winds
(1950 and earlier years) averaged 7.7 mph. The peak gust for the month was 42 mph on June 7. The record
wind gust for June was 72 mph in 1957.

Note on May 2004 Summary: There was an error on the May 2004 summary. Precipitation of 0.02 inch on
May 20th was omitted from the precipitation column, while the total of 0.89 inch was correct.

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.