NWS Outlook, Watch, and Warning Products Days to Hours Hours to Minutes Hazards Occurring or HAZARD Before Hazard Before Hazard Imminent (READY) (SET) (GO!) Hazardous Weather Outlook Severe Thunderstorm Watch SPC Convective Outlooks Severe Thunderstorm Warning Thunderstorms SPC Mesoscale Discussion (Day 1, Day 2, Day 3, Day 4-8) Hazardous Weather Outlook Severe Thunderstorm Watch Severe Thunderstorm Warning Tornadoes SPC Convective Outlooks SPC Mesoscale Discussion Tornado Emergency (Day 1, Day 2, Day 3, Day 4-8) Tornado Watch Tornado Warning WPC Precipitation Forecasts Flash Flood Warning (Day 1, Day 2, Day 3) Flash Flood Watch Urban & Small Stream Flood Flash Flood WPC Excessive Rainfall Outlook Advisory (Day 1, Day 2, Day 3) River Flooding Significant River Flood Outlook Flood Watch Flood Warning WPC Freezing Rain Probability Blizzard Warning Forecasts Winter Storm Watch Ice Storm Warning Winter Storms WPC Snow Probability Forecasts Winter Weather Advisory Winter Storm Warning Winter Storm Watch Winter Weather Advisory Fire Weather Watch Fire SPC Fire Weather Outlook (Day 1, Fire Weather Watch Red Flag Warning Day 2, Day 3-8) Freeze Warning Winter Storm Watch Hard Freeze Warning Winter Storm Watch Cold Freeze Watch Wind Chill Advisory Wind Chill Warning Excessive Heat Outlook Excessive Heat Advisory Excessive Heat Watch Heat Excessive Heat Watch Excessive Heat Warning High Wind Advisory High Wind Watch High Wind Watch Wind High Wind Warning Dense Fog Advisory Fog Outlook Fog Advisory Fog Watch Fog Fog Watch Fog Warning Freezing Fog Advisory Blowing Dust Advisory Blowing Dust Outlook Blowing Dust Watch Blowing Dust Warning Dust Storm Blowing Dust Watch Local Dust Storm Warning Updated 1/4/2018.