(more photos)
Every few days, web display (graphics and text) of most current weather station data, except for barometric pressure and rainfall, appears to be incorrect for part of the day. If the historic "Over the Past Day" plots show current values, however, the current values for those variables are correct. Unfortunately, we are unable to address this problem in the near future. We apologize for the inconvenience.
Location: The rooftop of the Helwig Recreation Center.
Weather Observations As Of: 02/13/12, 16:01:10.
Sunrise: 06:49. Sunset: 17:22. Moon: Waning 62% Full.
NPU Forecast Text: Increasing clouds and cooler. Precipitation possible and windy within 6 hours.
See the past week/month/year page for graphs of this archival data.
Note: The above buttons for accessing the archives will not work unless you are accessing this page in its original form (i.e., at www.npuphysics.org).
Sub-hour archive records prior to 21 August 2009 are provided in 5-minute intervals. Beginning with 21 August 2009, sub-hour archive records are provided at 30-minute intervals. The yearly report for 2009 does not contain data prior to August, due to problems with the data processing server.
Bad data: While the list below is not exhaustive, data during the following periods, and all statistics calculating using that data, are known to be incorrect (local time in yyyy-mm-dd hh:mm format):
Temperature dial: The blue needle and number shows the current temperature (in degrees Fahrenheit). The grey needle and number shows the current heat index/wind chill (in degrees Fahrenheit), as applicable. The red and blue ticks show the day's high and low temperature (in degrees Fahrenheit), respectively.
Humidity dial: The blue needle and number shows the current relative humidity, in percentage points. The red and blue ticks show the day's high and low relative humidity (in percentage points), respectively.
Wind dial: The blue needle and number shows the last observed wind direction and speed (in mph), respectively. The red tick and number shows the direction and speed (in mph), respectively, of the daily high wind. (Wind direction is the direction from which the wind is blowing from.)
Precipitation dial: The blue needle and number shows rainfall over the last day. The grey tick and number shows the net precipitation, i.e. rainfall minus evapotranspiration, over the last day (a positive number means a net gain of precipitation and a negative number means a net loss). Snowfall is not measured, and melting snow that has collected on the rain gauge may skew measurements.
Storm definition: A storm is defined as starting when the rain rate is greater than 0.05 in/hr. A storm is assumed to be finished when 12 hours have elapsed without any rainfall.
Our station is a Davis Instruments Wireless Vantage Pro2 Plus™ with 24-Hr Fan Aspirated Radiation Shield. The approximate coordinates for the station are 41.97 deg N, 87.71 deg W, and 617 ft above sea level.
For photos and more information related to this and other weather stations at North Park, please see the department's weather index page and this more detailed description of the Helwig station.
A GNU/Linux server in the Physics Department retrieves the data using wview 5.5.3, a collection of open-source (GPL) programs that interface with the data logger and generate the HTML pages. New data is uploaded to this page, and the web page is automatically refreshed, every 5 minutes.
