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Saffir-Simpson Hurricane Scale
Category Wind Speed Storm Surge
  mph ft
5 ≥157 >18
4 130–156 13–18
3 111–129 9–12
2 96–110 6–8
1 74–95 4–5
Additional Classifications
Tropical Storm 39–73 0–3
Tropical Depression 0–38 0
The Saffir-Simpson Hurricane Scale is a classification used for most Western Hemisphere tropical cyclones that exceed the intensities of "tropical depressions" and "tropical storms", and thereby become hurricanes. Source: Intellicast

Beaufort Wind Scale

Number Of Storms Per 100 Yrs

Atlantic Basin Storm Count Since 1850


Atlantic Basin Storm Count Since 1850

Typical Tropical Cyclone Origins and Track By Month



June Hurricane Climatology

July Hurricane Climatology

August Hurricane Climatology

September Hurricane Climatology

October Hurricane Climatology

November Hurricane Climatology

Hurricane Strike Percentages


[Map of return period in years for hurricanes passing within 50 nautical miles] Estimated return period in years for hurricanes passing within 50 nautical miles of various locations on the U.S. Coast


[Map of return period in years for major hurricanes passing within 50 nautical miles] Estimated return period in years for major hurricanes passing within 50 nautical miles of various locations on the U.S. Coast


CONUS Hurricane Strikes

 
[Map of 1950-2011 CONUS Hurricane Strikes] 1950-2011 CONUS Hurricane Strikes (Courtesy of NCDC)

Lookup Historic Hurricane Tracks



Hurricane Katrina Track 2005

Sea Surface Temperatures (SSTs)

Sea surface temperature (SST) is an important factor in hurricane dynamics. SST is measured over large portions of the ocean by satellites. Sea surface temperatures are generally warmer at low latitudes and colder at high latitudes but SST will vary with the seasons and with surface ocean currents. For forecasting hurricanes, more detailed maps of SST are produced for areas of hurricane formation. SST must be 82 degrees Fahrenheit (F) or warmer for tropical cyclone formation and sustenance.

Global Surface Sea Temperature Animation – Last 72 Hours




Global Surface Sea Temperature Animation

Gulf of Mexico Sea Temperatures

Gulf of Mexico Sea Temperatures

Atlantic Sea Surface Temps

Sea Surface Temps

Atlantic Sea Temperatures

For hurricane forecasting, it can also be very useful to look at the SST anomalies. A SST anomaly is the difference in the current SST measurement from the long-term average temperature for a given month, in a given place (the climatology). Positive temperature anomalies indicate that the water is warmer than usual and negative anomalies indicate that the water is cooler than usual.

Atlantic Sea Temperature Anomalies

Atlantic Sea Temperature Anomalies

Sea Surface Temps Anomaly

Weekly Sea Surface Temperatures

Weekly Sea Surface Temperatures

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