Black Birch Farm Apiaries Research
Weekly Data Updates:

Weekly Summary Bee Activity Index

The Bee Activity Index is published on the website daily for the previous day and it also summarized here on a weekly basis. Our Bee Activity Index is based on our weather information and our close range photogrammetry at the beehive entrances. The larger the number the greater the potential bee activity as controlled by meteorological conditions.

Weekly Precipitatiom vs. Evapotranspiration:

This chart shows the amount of precipitation (moisture incoming) to evapotranspiration (moisture outgoing) plotted on a daily basis for the week. If the evapotranspiration exceeds the precipitation value it indicates a negative moisture balance which can effect nectar flow and perhaps the need to provide water to hives.At Black Birch Farm Apiaries we monitor Soil Moisture, Precipitation, and Evapotranspiration to determine moisture stress on both hive activity and nectar flow.

Weekly Cumulative Precipitatiom vs. Evapotranspiration:

This chart shows the amount of precipitation (moisture incoming) to evapotranspiration (moisture outgoing) plotted CUMULATIVELY on a daily basis for the week. If the evapotranspiration exceeds the precipitation value it indicates a negative moisture balance which can affect nectar flow and perhaps the need to provide water to hives.At Black Birch Farm Apiaries we monitor Soil Moisture, Precipitation, and Evapotranspiration to determine moisture stress on both hive activity and nectar flow.

Weekly Soil Moisture and Drought Monitoring:

At Black Birch Farm Apiaries we monitor Soil Moisture, Precipitation, and Evapotranspiration to determine moisture stress on both hive activity and nectar flow. This information is posted on a weekly basis. Note: During winter months select data is unavailable

Legend (BBF = Black Birch Farm):

Blue = BBF LEAF WETNESS (Wetness in Percents)

Green = BBF SOIL MOISTURE (Water Content in m3/m3)

Red = BBF REFERENCE EVAPOTRANSPORATION (Reference ET in Inches)

Black = BBF RAINFALL (Max Rain in Inches)

Weekly Accumulated Winter Season Severity Index (AWSSI)

As developed by the National Weather Service, BBF calculates the daily AWSSI and posts such information on a weekly basis in graph form for the entire winter season (Runs late October until beginning of Spring)