2011 Atlantic hurricane season/Based on Dvorak Intensity

The 2011 Atlantic hurricane season started effectively on June 1st, 2011 and Ended on November 30th, 2011.

Hurricane Arlene
Note: Arlene was Upgraded from a 65 mph TS to a 75 mph C1 based on an Intensity found to be 65 knots.

Tropical Storm Bret
Note: Bret's intensity has been decreased based on winds of only 43 knots.

Tropical Storm Cindy
Note: Cindy's intensity has been decreased based on winds of only 47 knots.

Tropical Storm Don
Note: Don's intensity has been Increased based on winds of 53 knots.

Hurricane Emily
Note: Emily was Upgraded from a 50 mph TS to a 75 mph C1 based on an Intensity found to be 63 knots.

Tropical Storm Franklin
Note: Franklin will be unchanged except for the Pressure.

Tropical Storm Gert
Note: Gert's intensity has been decreased based on winds of only 45 knots.

Hurricane Harvey
Note: Harvey was Upgraded from a 65 mph TS to an 80 mph C1 based on an Intensity found to be 69.8 knots.

Hurricane Irene
Note: Irene was Upgraded from a 120 mph C3 to a 145 mph C4 based on an Intensity found to be 122.2 knots.

Tropical Storm Jose
Note: (Changed from TD 10 to TS Jose) This storm has been Upgraded to a 50 mph TS based on a wind speed of 43 knots.

Tropical Storm Katia
Note: (Changed from Jose to Katia) The Intensity has been decreased slightly as Peak Winds were only found to be 34 knots.

Hurricane Lee
Note: (Changed from Katia to Lee) The Intensity has been changed slightly as Peak Winds were found to be 122.2 knots.

Tropical Storm Maria
Note: (Changed from Unnamed to Maria) This Storm, while it is not included in the Archives and will be largely unchanged, will be kept on the List.

Tropical Storm Nate
Note: (Changed from Lee to Nate) The Intensity of this Storm has been decreased slightly as its winds were only found to be 47 knots at peak.

Tropical Storm Philippe
Note: (Changed from Nate to Philippe) This storm has been downgraded from a 75 mph C1 to a 60 mph TS as it's winds were only found to be 49 knots.

Hurricane Rina
Note: (Changed from Ophelia to Rina) The intensity of this Storm has been increased slightly as winds were found to be 122.2 knots at peak.

Hurricane Sean
Note: (Changed from Philippe to Sean) This Storm has been upgraded from a 90 mph C1 to a 100 mph C2 based on winds found to be 84.8 knots.

Hurricane Tammy
Note: (Changed from Rina to Tammy) This storm has been downgraded from a 115 mph C3 to a 105 mph C2 as winds were only found to be 90 knots.

Tropical Storm Vince
Note: (Changed from Sean to Vince) The Intensity of this storm has been dropped slightly, as winds were found to be 51 knots at peak.