Narrative Summary - June 1999

June 1999 was cooler than normal, averaging 67.4ºF, 2.3º below normal (69.7ºF). The
warmest June occurred in 1992 and averaged 76.8ºF, while the coolest was 63.0ºF in
1953. The following daily temperature records were established in June:

                          New          Old
Date   Category          Record       Record     Year
  2    Low Maximum	   65		65	 1980  Tie
  6    Low Minimum   	   38		46	 1962   
  7    Low Minimum	   42		44	 1961
  9    Low Minimum 	   42		44	 1985
 13    High Minimum	   70		67	 1989
 15    High Maximum	  102	       102	 1961  Tie

Precipitation for June 1999 totaled 0.31 in., 82% of normal (0.38 in.). The wettest June,
in 1950, received 2.92 in., while the driest, in 1986 and earlier years, received only a
trace. Total precipitation since January 1 was 2.30 in., 72% of normal (3.18 in.).

The average wind speed for June 1999 was 9.7 miles per hour (mph), 0.5 mph above
normal (9.2 mph). The windiest June on record averaged 10.7 mph (1983), while the June
with the lightest winds (1950) averaged 7.7 mph. The peak gust for the month was 42
mph on June 8. The record wind gust for June was 72 mph in 1957.

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.