NWS Greenville-Spartanburg Criteria for Non-Precipitation Watches/Warnings/Advisories

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

NWS Greenville-Spartanburg Criteria for Non-Precipitation Watches/Warnings/Advisories
Hazard Type	Watch/Warning Name Criteria	Advisory Name Criteria
Cold Weather
Heat	Excessive Heat Watch/Warning Heat Index 110 or greater	Heat Advisory Heat Index 105 or greater but less than 110
Wind (Non-Thunderstorm)	High Wind Watch/Warning Sustained winds higher than 40 mph and/or frequent gusts greater than 57 mph	Wind Advisory Sustained Winds of 31-40 mph, and/or frequent gusts of 46-57 mph
Frost Freeze	Freeze Watch/Warning Low temperature of 32 degrees or less during the Growing Season*	Frost Advisory Scattered to widespread frost is forecast during the Growing Season*
Fog	N/A	Dense Fog Advisory Fog causing widespread visibility of 1/4 mile or less

NWS Greenville-Spartanburg Criteria for Non-Precipitation Watches/Warnings/Advisories

Hazard Type

Watch/Warning Name
Criteria

Advisory Name
Criteria

Cold Weather