Tuesday, November 17, 2009

November 10: ORD

Today is November 10th. It's the 314th day of the year. 51 days remain. It's week 45 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 50 and the normal low is 35. I've calculated the 31-year averages at 50 and 33.


On the warm side, in 1999 the high was 69 with a low of 47. Five years later, in 2004, the high was 62 with a low of 47. Other warm highs were 64 in 1998, 63 in 1978, 62 in 1982 and 62 in 2002. Another warm low was 48 in 1992. The record high of 71 and record warmest low of 49 were set on the same day in 1949.
22 of the last 31 highs have been: 40s (10) and 50s (12). Six highs were in the warmer 60s. Three highs were in the cooler 30s.

In looking back through the years to the first November at O'Hare in 1958, the following instances were notable: in 1977 the high was 39 with a low of 34, a five degree spread. In 1975 the high was a warm 68 with a low of 38, a 30 degree spread. In 1974 the high was 50 with a low of 46, a four degree spread. In 1973 the high was 41 with a low of 18, a cool day. In 1972 the high was 45 with a low of 41, a four degree spread. In 1969 the high was 46 with a low of 41, a five degree spread. In 1960 the high was 37 with a low of 24, a cool day. In 1959 the high was a warm 63 degrees.


More recently, there were no
large spreads. There were small spreads of three degrees in 1992 (51/48) and four degrees in 1985 (40/36).

On the cool side, in 1996 the high was 31 with a low of 24, a seven degree spread. In 1979 the high was 34 with a low of 22. In 1986 the high was 42 with the record low of 18. Another cool low was 20 in 1991. The record coolest high of 28 occurred in 1926. 23 of the last 31 lows were: 20s (11) and 30s (12). One low was in the cooler 10s. Seven lows were in the warmer 40s.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:xx and sunrise is at 6:xx. Sunset is at 16:xx and twilight ends at 17:xx. Tomorrow twilight begins at 6:xx and sunrise is at 6:xx. There's a total of 10 hours, x minutes of daylight today (xxxx minutes less than yesterday) and 11 hours, x minutes between twilights. The moon is xxxxxxxx, heading towards xxxxx xxxxxx tomorrow. Illumination was xx% at midnight, will be xx% at noon and xx% at midnight tonight. Moonset is at 12:16. Moonrise is at 22:30. Moonlight time is xx hours, xx minutes which is xx minutes shorter than yesterday.

Veterans Day is tomorrow. My sister-in-law, Sharon, celebrates a birthday in four days. -Bernie-

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