Today's Central Indiana Hazards Outlook Key

Hazard colors represent highest hazard threat for anywhere in Central Indiana for Today and Tonight. 

For more information on current hazards, please see the Hazardous Weather Outlook or our Outlooks page.

Information about hazards and the watch/warning/advisory program, please read our hazardous weather products definitions. (pdf)

Thunderstorm
Green Light - No threat : No Thunderstorms Expected
Yellow Light - Low Threat : Thunderstorms are Possible; No Severe Storms Expected.
Red Light - Moderate Threat : Slight Risk outlooked by the Storm Prediction Center for the area, or Isolated Severe Storms are 
          Possible
Purple Light - High Threat : Moderate or High Risk outlooked by the Storm Prediction Center for the area


Tornado
Green Light - No threat : No Tornadoes Expected
Yellow Light - Low Threat : Slight Risk outlooked by the Storm Prediction Center for the area, or Isolated Tornadoes are Possible

Red Light - Moderate Threat : Moderate Risk outlooked by the Storm Prediction Center for the area with Tornadoes a threat
Purple Light - High Threat : High Risk outlooked by the Storm Prediction Center for the area with Tornadoes a primary threat

Hail
Green Light - No threat : No Hail Expected
Yellow Light - Low Threat : Non-Severe Hail Possible (less than 1 inch in diameter)
Red Light - Moderate Threat : Severe Hail Possible (1inch diameter or greater)
Purple Light - High Threat : Very Large Hail Possible (2 inch or greater in diameter) or Significant Risk of Severe Hail

Wind (Sustained Wind or Gusts)
Green Light - No threat : No Strong Winds Expected
Yellow Light - Low Threat : 20 to 40 mph Expected
Red Light - Moderate Threat : 40 to 65 mph Expected
Purple Light - High Threat : Greater than 65 mph Expected

Flash Flood
Green Light - No threat : No Flooding Expected
Yellow Light - Low Threat : Heavy Rain and Minor Flooding Possible, or Slight Risk of Excessive Rainfall
Red Light - Moderate Threat : Flash Flood Watch in effect: Flash Flooding is Possible, or Moderate Risk of Excessive Rainfall
Purple Light - High Threat : Flash Flood Warning in effect: Flash Flooding is Imminent or Occurring or High Risk of Excessive Rain

Temperature
Green Light - No threat : No Extreme Temperatures Expected
Yellow Light - Low Threat : Wind Chills less than 0 or Heat Index greater than 95
Red Light - Moderate Threat : Heat Advisory or Wind Chill Advisory in Effect
Purple Light - High Threat : Heat Warning or Wind Chill Warning in Effect

Fog
Green Light - No threat : No Widespread Fog Expected
Yellow Light - Low Threat : Widespread Visibilities of 1 to 3 Miles Expected
Red Light - Moderate Threat : Widespread Visibilities of 1/4 Mile to 1 mile Expected
Purple Light - High Threat : Widespread Visibilities of Less Than 1/4 Mile Expected (Dense Fog Advisory)

Winter Precipitation
Green Light - No threat : No Accumulating Winter Precipitation Expected
Yellow Light - Low Threat : Any Accumulating Winter Precipitation
Red Light - Moderate Threat : Winter Weather Watch or Winter Weather Advisory in Effect
Purple Light - High Threat : Winter Weather Warning in Effect

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