Indianapolis National Weather Service Forecast Office – Spotter Information Page – http://www.weather.gov/ind/spotter NWS Weather Spotter’s Field Guide – https://www.weather.gov/media/bis/Weather_Spotter_Field_Guide.pdf 2021 NWS IND Spotter Talk presentation - https://www.weather.gov/media/ind/spottertraining/SpotterTalk2021withNot...