This product summarizes the distribution of average temperature or total
precipitation for a specified month or 3-month season.
The product provides the mean temperature or precipitation amount
averaged over the available data during the period 1971 through 2000. (For the
seasons Nov-Jan and Dec-Feb, the period is Nov 1971-Jan 2001 and Dec 1971-Feb 2001, respectively.)
For temperature, the standard deviation for this same range of years is also provided. For precipitation,
the median is displayed. The period of record minimum and maximum values and the
years of occurrence are listed next. (For seasons crossing a year boundary, the year listed is the starting year.) The station period of record is displayed
in the header. Next, the limits for the three categories,
"below normal", "near normal" and "above normal" are displayed, along with
the last year that fell into each category and what the value was in that year.
These are based on a distribution fit to the years 1971 through 2000. The
distribution is evaluated such that 33.3% of the years fall into each category.
For temperature, the Gaussian distribution is used. For precipitation, a gamma distribution is used.
The price for this product is $0.50/summary.
|Station: BOSTON LOGAN INT'L ARPT
|Latitude: 42.36 degrees
||Longitude: -71.01 degrees
||Elevation: 20.0 feet|
|Station period of record:
01/01/1920 - 10/20/2003|
|CLIMOD Product: Climatological Distributions
||Creation Time: 10/21/2003 11:19 EDT|
|Element: Average Temperature
||Units: degrees F
|Season: December through February|
|1971-2000 Mean|| 31.9|| |
|Standard deviation|| 2.11|| |
|Record minimum|| 24.7 in 1933|| |
|Record maximum|| 37.8 in 2001|| |
|Category|| Range of values || Year of last occurrence |
|Below normal||<= 31.0||2002 ( 27.8 )|
|Near normal||31.0 - 32.8||1992 ( 31.4 )|
|Above normal||>= 32.8||2001 ( 37.8 )|
For additional assistance, you can contact the HPRCC.