Product Criteria Coastal Products Coastal Flood Statement Used to describe coastal hazards that do not meet advisory, warning or watch criteria such as minor beach erosion & elevated (Action) water levels. Coastal Flood Advisory Highlight minor flooding like tidal overflow that is imminent or possible within 12 Hours& if confidence is high (equal to or greater than 50%), then may extend or set to begin within 24 hrs. Coastal Flood Watch Significant coastal flooding is possible. This includes Moderate and Major flooding in the Advanced Hydrologic Prediction Service (AHPS) product. Coastal Flood Warning Significant coastal flooding is occurring, imminent or highly likely. This includes Moderate and Major flooding in AHPS. High Surf Advisory Breaker heights ≥ 7 Feet Rip Current Statement When a high risk of rip currents is expected Marine Products Small Craft Exercise Caution Winds 15-20 knots and/or seas 6 Feet Small Craft Advisory Winds 20-33 knots and/or seas ≥ 7 Feet Small Craft Advisory (seas only) Winds< 20 knots & seas ≥ 7 Feet (usually with a swell) Gale Watch Wind speed 34-47 knots or frequent gusts 34-47 knots Gale Warning Wind speed 34-47 knots or frequent gusts 34-47 knots Storm Watch Wind speed 48-63 knots or gusts of 48-63 knots Storm Warning Wind speed 48-63 knots or gusts of 48-63 knots Marine Dense Fog Advisory Widespread visibility < 1 nautical mile in fog Marine Dense Smoke Advisory Widespread visibility < 1 nautical mile in smoke Marine Weather Statement Update or cancel at Special Marine Warning (SMW), a statement on non-severe showers & thunderstorms, short-lived wind/sea increase that could be dangerous for small boats, significant conditions prevailing for 2+ Hours that could impact marine operations including: rough seas near inlets/passes, dense fog, low water events, HAZMAT spills, rapidly increasing/decreasing or shifting winds, or details on potential water landings. Special Marine Warning Winds ≥ 34 knots and/or 3/4 inch hail and/or waterspouts Fire Weather Elevated Fire Danger Issued when below criteria are met or forecast: * NE FL:Relative Humidity (RH) 28-30% + Wind ≥ 15 mph + Energy Release Component (ERC) 24-26 * SE GA: When 2 of 3 Red Flag Warning (RFW) criteria occur. Fire Weather Watch If RFW expected within 48 hours. Red Flag Warning Issued when below criteria are met or forecast: * NE FL:RH < 28% + Wind ≥15 mph + ERC ≥ 26 * SE GA:RH < 25% + Wind ≥15 mph or gusts ≥25 mph + 10-hr Fuel Moisture < 6% Hydrologic Urban & Small Stream Flood Elevated stream flow, ponding of water, rainfall accumulation warrants public attention Advisory Flood Watch Elevated confidence of flash flood guidance (FFG) being exceeded Flood Warning River flooding imminent or expected Areal Flood Warning Fresh water flooding imminent or expected with a more gradual accumulation of flood water that threatens life/property. Flash Flood Warning Fast accumulation of water that threatens life/property. Dam break. Severe Weather Significant Weather Advisory Marginally severe storm. Wind gusts 40-57 mph and/or hail less than 1 inch. Excessive lightning. Locally "SWA" heavy rainfall. Can also be issued for tropical rainbands and for storms that exhibit weak rotation.

Severe Thunderstorm Warning Wind gusts of ≥ 58 mph and/or hail ≥ 1 inch Tornado Warning Tornado or waterspout making landfall. Severe Weather Statement Update severe and tornado warnings at least once during valid periods, more frequent for significant severe events. Tropical Cyclone Subtropical Storm Watch Wind speeds ≥ 34 knots with a subtropical cyclone possible Subtropical Storm Warning Wind speeds ≥ 34 knots with a subtropical cyclone imminent Tropical Storm Watch Wind speeds ≥ 34-63 knots with a tropical cyclone possible Tropical Storm Warning Wind speeds ≥ 34-63 knots with a tropical cyclone imminent Hurricane Watch Wind speeds ≥ 64 knots with a tropical cyclone possible Hurricane Warning Wind speeds ≥ 64 knots with a tropical cyclone imminent Storm Surge Watch Possible life-threatening inundation from rising water moving inland from shoreline Storm Surge Warning Danger of life-threatening inundation from rising water moving inland from shoreline Extreme Wind Warning Sustained Category 3 strength winds (≥ 115 mph) within the hurricane eyewall. Winter Weather Wind Chill Advisory Wind speed ≥ 10 mph for ≥ 4 hrs: SE GA: wind chill 6-20 degrees NE FL: wind chill 6-25 degrees Wind Chill Warning Wind speed ≥ 10 mph for ≥ 4 hrs: SE GA: wind chill < 5 degrees NE FL: wind chill < 5 degrees Winter Weather Advisory Winter weather event having more than one predominant hazard meeting or exceeding 12 and/or 24 hr advisory criteria but remaining below warning criteria (if conditions are met, a winter storm watch/warning preferred locally) Winter Storm Warning Snow accumulation of ≥ 2 inches in < 24 hrs or Considerable falling/blow snow with visibility frequently < 1/4 mile & sustained winds/frequent gusts ≥ 35 mph or Any accumulation of ice or sleet that impacts transportation, commerce or power. Winter Storm Warning Snow accumulation of ≥ 2 inches in < 24 hrs or Considerable falling/blow snow with visibility frequently < 1/4 mile & sustained winds/frequent gusts ≥ 35 mph or Any accumulation of ice or sleet that impacts transportation, commerce or power. Snow Advisory Snow accumulation < 2 inches in < 12 hrs (if these conditions are met, a winter storm watch/warning preferred locally) Snow & Blowing Snow Advisory Sustained wind or frequent gusts 25-34 mph with falling/blowing snow occasionally reducing visibility < 1/4 mile (if conditions are met, a winter storm watch/warning preferred locally) Blowing Snow Advisory Widespread or localized blowing snow reducing visibility < 1/4 mile with winds < 35 mph Heavy Snow Warning Snow accumulation ≥ 2 inches in < 12 hrs (if conditions are met, a winter storm watch/warning preferred locally) Non-Precipitation "NPW" Dense Fog Advisory Widespread visibility < 1/4 mile in fog Dense Smoke Advisory Widespread visibility < 1/4 mile in smoke Wind Advisory Sustained winds 25-39 mph or wind gusts of 35-57 mph High Wind Warning Sustained winds ≥ 40 mph or wind gusts ≥ 58 mph Frost Advisory Widespread frost expected. Not issued when freeze warning in effect. SE GA: Issued until first hard freeze of season. Resume after March 1st. Freeze Watch Temperatures < 32 degrees possible. Not issued for SE GA after 1st hard freeze of season. Freeze Warning Temperatures < 32 degrees imminent. Not issued for SE GA after 1st hard freeze of season. Hard Freeze Watch Temperatures < 27 degrees possible (all zones, all year) Hard Freeze Warning Temperatures < 27 degrees imminent (all zones, all year) Heat Advisory Heat index (HI) 108-112 degrees. Onset time for advisory when HI ≥ 100 degrees Excessive Heat Warning Heat index ≥ 113 degrees. Onset time for warning when HI ≥100 degrees. Dust Storm Warning Widespread visibility < 1/4 mile in dust with wind speed ≥ 25 mph Miscellaneous Airport Weather Warning Thunderstorms with winds ≥ 35 knots or Significant wind shifts which alter landing pattern or Sustained surface wind ≥ 25 knots (not with convection) or thunderstorms with hail equal to or greater than 1/2 inch or Onset of freezing rain or snow