LOCATION.-- Latitude 41°45'52", longitude 87°58'56" (NAD of 1927), in NW1/4NW1/4SE1/4 sec. 21, T.38N., R.11 E., DuPage County.

PERIOD OF RECORD.--

PRECIPITATION: February 21, 1986 to March 30, 1998.

GAGE.-- An 8-in.-diameter, unheated, tipping-bucket rain gage

REMARKS.-- Snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as temperatures rise. Snowfall-affected data are subject to appreciable errors.

EXTREMES FOR PERIOD OF RECORD.--

PRECIPITATION: Maximum recorded, 3.79 in., July 18, 1996 but may have been greater during periods of missing record.