Temperature- The weather station gets direct daily sunlight most of the day except for evening in summer when the sunsets to the north of west. The only deciduous trees are located about 100 feet to the northwest of the station and provide little late afternoon summer shade. The station is located on a flat area a very small slope to the southeast with a few degrees of slope. The instruments are housed in an instrument shelter and the thermometer sensor and relative humidity sensors are aspirated. On a hot calm sunny day an aspirated thermometer will read at least one degree lower than sounding stations that are not aspirated.
Wind- The weather station elevation is 273 ft. above sea level and is open to directions except the Northwest. Thus, wind speeds from most directions are accurately recorded. Deciduous trees to the NW of the anemometer decreases NW winds slightly even though they are located about 100 feet away from the anemometer. In winter even when the trees are bare of foliage probaly has little or no noticable affect on the winds speed. The anemometer is about 34 or 35 feet above the ground and no obstructions to the SE,E, NE and N. Winds from the south annd Southwest must pass across the roof but the anemomter is a little more than 4 feet above the roof.
|Information on the Glen Allen Observer|
|Observer has had 60 years experience observing weather as of April 2016.|
1. Rockingham County, Virginia- 10 Years of observations by Lowell Koontz from 1958 to 1968 - 37 years of observations by Marye Koontz from 1969-2000 in Rockingham County, VA
2. Farifax County, Virginia- 29 Years of observations from 1979-2008 at 6327 Phyllis Lane, Alexandria, VA and 6515 Oakwood Drive, Falls Church,VA
3. Henrico County, Virginia- 9 Years of observations from 2008-2017 at Springfield Park in Henrico County, VA
|Link to 60 Years of Weather Observing & 48 years of records|