National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

 

***NEW Tropical Cyclone Graphics: Track and Error Cone, Wind Speed Probabilities, Time of Arrival***

New graphics will be available following updated bulletins issued by the Joint Typhoon Warning Center (JTWC) for cyclones between 10-20S and 164.5W-178.5W. 

 

Tropical Cyclone (TC) Resources

 

 

Saffir-Simpson Scale
  • Tropical Storm - winds 39-73 mph (34-63 kt)
  • Category 1 - winds 74-95 mph (64-82 kt)
  • Category 2 - winds 96-110 mph (83-95 kt)
  • Category 3 - winds 111-129 mph (96-112 kt)
  • Category 4 - winds 130-156 mph (113-136 kt)
  • Category 5 - winds 157 mph and up (137+ kt)

Lat/Long Distance Calculator
Calculate the distance between lat/long points