The following are weather conditions the district considers in determining school delays, cancellations or early releases during inclement weather.
Precipitation
This comes in the form of snow, ice, ice pellets, freezing rain or wintry mix. In all of these events, consideration is given to many factors including ground temperature, existing accumulations and bonded ice.
Temperature/Chill Factor
We work with the Sedgwick County Emergency Management and the National Weather Service to stay informed. No specific minimum temperature or wind chill has been established as grounds for canceling school. Sub-zero wind chill factors occur almost every year and we find that this value demands much more consideration. While the threshold for wind chill factors is not defined by a number due to so many other variables.
Wind
Wind direction and velocity are part of every decision. Wind compounds winter weather situations by intensifying wind chill factors and reducing visibility when accompanied by snow.
Visibility
Restrictions such as ice fog or blowing snow conditions are visibility factors taken into consideration.
Forecast
Forecast predictions are also considered but are not generally the sole factor when making decisions on school closings.
Snow Removal & Building Access
Consideration is given to the availability of snow/ice removal crews. We access the ability of clearing sidewalks, conditions of roads and parking lots in the time available.
Mechanical Systems
Consideration is given to the operational status of boilers and other gas-fired heating systems to ensure that we have warm buildings. On extremely cold days, plumbing systems are also checked to ensure no pipes are frozen which could have a significant impact on daily operations.
Bus Conditions
Wintry weather can significantly delay the departure of buses due to the time required to clear snow and ice from the bus's critical areas such as the windshield, doors and lights. Depending on the temperature and chill factor, consideration is also given to our ability to start enough buses to cover all routes.
Bus Driver Availability
Some of our bus drivers do not live in Derby. Therefore, consideration is given to their ability to get to work and the time it will take them to make the trip.
Neighboring Districts
We also spend time communicating with our neighboring districts to ensure we all have the same information.