Something happened in my home town today that made me wonder .... does anyone have a 'wind speed' at which they would not take the children outside?

Currently in centre care for our area the standard practice for outside practice is if the temperature is
  • Up to -9 you 'gauge outside time' based on how children are coping with weather
  • Colder than -10 or a 'cold weather alert' in affect due to wind chills you do not go outside with children
  • In the summer if there is a 'heat / smog / UV' advisory you limit outside time to before 10 am and after 3pm if you go out at all
  • If an 'extreme weather warning' is in affect from Environment Canada for your area ... thunderstorm warning, tornado warning, extreme snowstorm warning

Today it was sunny and warm but WINDY ... however there were not 'warnings' in affect...I know I took my crew outside, the school kids were outside for recess cause I heard them and so forth.

Apparently at a centre in town the grapevine has shared that a tree was uprooted from the wind and 5 toddlers were injured including needing stitches ... parents are obviously upset that this has happened and wondering what could have been done to 'prevent' it as we usually are when incidents occur and someone is 'hurt'

Made me wonder ... at what 'wind speed' should we be concerned about taking our children outside or would you chalk something like this as a FLUKE of nature and not let it impact your choice to go outside with children unless there is an actually 'weather warning' out there?