Probability that it will rain near you in the next half-hour

rain_alert.sh

# requires python, jq

# get your API key from https://developer.forecast.io/
API_KEY=

# enter the latitude and longitude for your location
LAT=
LNG=

CHANCE=$( curl -s https://api.forecast.io/forecast/API_KEY/LAT,LNG?exclude=hourly,daily,alerts,flags | jq .minutely.data[].precipProbability | head -n 30 | python -c 'import sys; print(max(float(x) for x in sys.stdin.readlines()))' )

if [[ $CHANCE > .6 ]]; then
  # alert somehow
  # save the fact that we alerted, then don't do it for the next X minutes
fi