Resources Created by the CSU Tropical Group

Forecasting and Research Resources

CSU Tropical Cyclone Impact Probabilities

Since 2021, we have calculated the impacts of tropical cyclones for each state and county/parish along the Gulf and East Coasts, tropical cyclone-prone provinces of Canada, Atlantic-facing states of coastal Mexico, islands in the Caribbean and countries in Central America. We use NOAA’s Historical Hurricane Tracks website and selected all named storms, hurricanes and major hurricanes that have tracked within 50 miles of each landmass between 1880-2020. This approach allows for tropical cyclones that may have tracked through an immediately adjacent region to be counted for all regions that were in close proximity to the location of the storm. We then fit the observed frequency of storms within 50 miles of each landmass using a Poisson distribution to calculate the climatological odds of one or more events within 50 miles. Net landfall probability is shown to be linked to the overall Atlantic basin Accumulated Cyclone Energy (ACE). A measure of a named storm’s potential for wind and storm surge destruction defined as the sum of the square of a named storm’s maximum wind speed (in 104 knots2) for each 6-hour period of its existence. Long-term statistics show that, on average, the more active the overall Atlantic basin hurricane season is, the greater the probability of U.S. hurricane landfall. Use the drop-down to obtain the climatological odds of storms tracking within 50 miles of each state along the Gulf and East Coasts along with the odds for the current season based on the latest forecast. All of the calculations are also available in a downloadable spreadsheet.

Tropical Cyclone Impact Probabilities (defined as one or more storms within 50 miles of location)

State County 2026 Forecast Probability of Named Storm impact 2026 Forecast Probability of Hurricane impact 2026 Forecast Probability of Major Hurricane impact Average Probability of Named Storm impact Average Probability of Hurricane impact Average Probability of Major Hurricane impact # Named Storms 1880-2020 # Hurricanes 1880-2020 # Major Hurricanes 1880-2020
Alabama 34% 14% 4% 58% 28% 8% 123 46 12
Alabama Baldwin 23% 9% 3% 41% 18% 6% 75 28 9
Alabama Mobile 20% 9% 3% 38% 18% 6% 67 28 8
Connecticut 11% 4% 1% 22% 8% 1% 35 11 2
Connecticut Fairfield 9% 3% 1% 17% 6% 1% 27 9 2
Connecticut Middlesex 8% 3% 1% 16% 7% 1% 24 10 2
Connecticut New Haven 10% 4% 1% 20% 8% 1% 32 11 2
Connecticut New London 9% 3% 1% 17% 7% 1% 27 10 2
Delaware 12% 3% 0% 23% 6% 1% 36 9 1
Delaware Kent 8% 1% <1% 15% 3% <1% 23 4 0
Delaware New Castle 6% 0% <1% 12% 1% <1% 18 1 0
Delaware Sussex 10% 3% 0% 20% 6% 1% 32 9 1
Florida 61% 32% 15% 86% 56% 29% 274 115 48
Florida Bay 18% 8% 2% 34% 17% 5% 58 26 7
Florida Brevard 23% 8% 3% 42% 17% 6% 78 26 8
Florida Broward 23% 12% 5% 42% 23% 11% 77 36 16
Florida Charlotte 20% 8% 5% 38% 17% 10% 67 26 15
Florida Citrus 18% 8% 1% 34% 17% 3% 59 26 4
Florida Collier 23% 11% 6% 42% 21% 13% 77 34 19
Florida Dixie 19% 6% 1% 35% 13% 1% 61 19 2
Florida Duval 20% 7% 2% 38% 14% 3% 67 22 5
Florida Escambia 21% 9% 3% 39% 17% 7% 69 27 10
Florida Flagler 18% 7% 1% 34% 14% 2% 59 22 3
Florida Franklin 18% 7% 1% 35% 14% 3% 60 21 4
Florida Gulf 18% 8% 1% 34% 15% 3% 59 23 4
Florida Hernando 18% 8% 2% 34% 17% 4% 58 26 6
Florida Hillsborough 19% 9% 3% 36% 17% 7% 63 27 10
Florida Indian River 20% 8% 3% 37% 17% 6% 65 26 9
Florida Jefferson 17% 5% 0% 33% 9% 1% 56 14 1
Florida Lee 21% 9% 6% 40% 18% 11% 71 28 17
Florida Levy 19% 7% 1% 36% 14% 3% 62 22 4
Florida Manatee 20% 9% 4% 37% 18% 8% 65 28 11
Florida Martin 20% 9% 3% 38% 17% 7% 67 27 10
Florida Miami-Dade 24% 12% 7% 43% 23% 14% 79 37 21
Florida Monroe 30% 16% 8% 52% 30% 17% 103 50 26
Florida Nassau 21% 7% 2% 39% 13% 3% 69 20 5
Florida Okaloosa 19% 8% 3% 36% 16% 6% 62 24 8
Florida Palm Beach 23% 11% 4% 42% 21% 9% 77 34 13
Florida Pasco 19% 8% 2% 36% 17% 5% 63 26 7
Florida Pinellas 20% 8% 3% 36% 17% 7% 64 26 10
Florida Santa Rosa 19% 8% 3% 35% 16% 6% 61 25 8
Florida Sarasota 19% 8% 4% 36% 17% 8% 63 26 12
Florida St. Johns 21% 8% 2% 38% 15% 3% 68 23 5
Florida St. Lucie 19% 8% 3% 36% 15% 6% 63 23 8
Florida Taylor 19% 5% 0% 36% 11% 1% 62 16 1
Florida Volusia 21% 8% 1% 39% 17% 2% 69 26 3
Florida Wakulla 17% 6% 1% 32% 12% 1% 54 18 2
Florida Walton 18% 8% 3% 35% 17% 6% 60 26 8
Georgia 38% 16% 3% 63% 30% 6% 140 51 9
Georgia Bryan 21% 7% 1% 39% 14% 2% 69 21 3
Georgia Camden 22% 6% 2% 40% 12% 3% 72 18 5
Georgia Chatham 22% 7% 1% 40% 14% 3% 72 22 4
Georgia Glynn 20% 5% 2% 36% 10% 3% 64 15 5
Georgia Liberty 22% 7% 1% 40% 14% 3% 72 22 4
Georgia McIntosh 21% 7% 1% 39% 14% 3% 69 21 4
Louisiana 40% 21% 7% 66% 38% 14% 151 68 22
Louisiana Cameron 16% 8% 2% 31% 15% 5% 53 23 7
Louisiana Iberia 18% 8% 2% 34% 16% 5% 59 25 7
Louisiana Jefferson 20% 10% 3% 38% 19% 6% 67 30 8
Louisiana Lafourche 21% 11% 3% 40% 21% 6% 71 33 8
Louisiana Orleans 17% 8% 2% 32% 15% 4% 54 23 6
Louisiana Plaquemines 24% 11% 3% 43% 22% 7% 80 35 10
Louisiana St. Bernard 22% 11% 4% 41% 21% 8% 74 33 11
Louisiana St. Mary 19% 9% 2% 35% 17% 4% 61 27 6
Louisiana St. Tammany 18% 8% 2% 34% 16% 4% 58 24 6
Louisiana Terrebonne 24% 11% 3% 43% 21% 6% 79 34 9
Louisiana Vermilion 16% 8% 2% 31% 16% 5% 52 24 7
Maine 11% 3% 1% 21% 7% 1% 34 10 2
Maine Cumberland 6% 1% <1% 12% 2% <1% 18 3 0
Maine Hancock 5% 2% 0% 11% 4% 1% 16 6 1
Maine Knox 7% 2% 0% 13% 4% 1% 20 6 1
Maine Lincoln 5% 1% <1% 11% 2% <1% 16 3 0
Maine Sagadahoc 6% 1% <1% 11% 2% <1% 17 3 0
Maine Waldo 5% 1% <1% 10% 2% <1% 15 3 0
Maine Washington 6% 2% 0% 12% 4% 1% 18 6 1
Maine York 7% 2% 0% 14% 3% 1% 22 5 1
Maryland 16% 5% 0% 31% 11% 1% 52 16 1
Maryland Anne Arundel 6% 0% <1% 12% 1% <1% 18 1 0
Maryland Baltimore 5% 0% <1% 10% 1% <1% 15 1 0
Maryland Baltimore City 4% 0% <1% 8% 1% <1% 12 1 0
Maryland Calvert 7% 1% <1% 14% 1% <1% 21 2 0
Maryland Cecil 6% 0% <1% 12% 1% <1% 18 1 0
Maryland Dorchester 8% 2% <1% 17% 3% <1% 26 5 0
Maryland Harford 5% 0% <1% 10% 0% <1% 15 0 0
Maryland Kent 6% 0% <1% 12% 0% <1% 18 0 0
Maryland Queen Anne's 6% 0% <1% 13% 1% <1% 19 1 0
Maryland Somerset 11% 3% <1% 21% 6% <1% 33 9 0
Maryland St. Mary's 9% 1% <1% 17% 2% <1% 27 3 0
Maryland Talbot 7% 0% <1% 13% 1% <1% 20 1 0
Maryland Wicomico 9% 2% <1% 18% 4% <1% 28 6 0
Maryland Worcester 12% 4% 0% 24% 9% 1% 38 13 1
Massachusetts 17% 7% 1% 33% 14% 3% 56 22 4
Massachusetts Barnstable 8% 4% 1% 17% 9% 1% 26 13 2
Massachusetts Dukes 10% 4% 1% 20% 8% 1% 31 11 2
Massachusetts Essex 7% 2% 0% 14% 5% 1% 22 7 1
Massachusetts Nantucket 10% 5% 1% 19% 9% 1% 30 14 2
Massachusetts Norfolk 8% 2% 0% 15% 5% 1% 23 7 1
Massachusetts Plymouth 8% 3% 1% 16% 7% 1% 25 10 2
Massachusetts Suffolk 7% 2% 0% 14% 5% 1% 22 7 1
Mississippi 30% 15% 4% 53% 28% 8% 106 47 11
Mississippi Hancock 17% 7% 2% 32% 14% 4% 54 22 6
Mississippi Harrison 18% 8% 2% 34% 17% 4% 59 26 6
Mississippi Jackson 17% 8% 3% 32% 16% 6% 55 24 8
New Hampshire 9% 3% 1% 18% 6% 1% 28 8 2
New Hampshire Rockingham 7% 2% 0% 14% 3% 1% 22 5 1
New Jersey 12% 3% 0% 23% 7% 1% 36 10 1
New Jersey Atlantic 9% 3% 0% 17% 7% 1% 27 10 1
New Jersey Burlington 8% 3% <1% 16% 6% <1% 25 8 0
New Jersey Cape May 9% 3% 0% 18% 7% 1% 28 10 1
New Jersey Essex 7% 1% <1% 13% 3% <1% 20 4 0
New Jersey Hudson 7% 1% <1% 13% 3% <1% 20 4 0
New Jersey Middlesex 7% 2% <1% 14% 3% <1% 21 5 0
New Jersey Monmouth 8% 3% 0% 16% 6% 1% 25 9 1
New Jersey Ocean 9% 3% 0% 18% 7% 1% 28 10 1
New Jersey Salem 6% 1% <1% 12% 1% <1% 18 2 0
New Jersey Union 7% 1% <1% 13% 3% <1% 20 4 0
New York 14% 5% 1% 26% 9% 2% 43 14 3
New York Bronx 8% 2% 0% 15% 5% 1% 23 7 1
New York Kings 7% 2% <1% 14% 4% <1% 21 6 0
New York Nassau 8% 3% 1% 16% 6% 1% 24 8 2
New York New York 8% 3% 0% 17% 6% 1% 26 9 1
New York Queens 8% 3% 0% 16% 6% 1% 24 8 1
New York Richmond 8% 2% <1% 15% 5% <1% 23 7 0
New York Suffolk 11% 4% 1% 21% 8% 2% 33 12 3
New York Westchester 8% 2% 0% 16% 5% 1% 24 7 1
North Carolina 42% 21% 4% 68% 38% 8% 159 68 11
North Carolina Beaufort 20% 7% 0% 37% 14% 1% 66 22 1
North Carolina Bertie 18% 5% 0% 33% 10% 1% 57 15 1
North Carolina Brunswick 22% 10% 2% 41% 20% 4% 74 32 6
North Carolina Camden 19% 7% 0% 35% 13% 1% 61 20 1
North Carolina Carteret 27% 14% 2% 48% 28% 4% 92 46 6
North Carolina Chowan 15% 6% 0% 29% 11% 1% 49 17 1
North Carolina Craven 23% 10% 0% 42% 20% 1% 76 31 1
North Carolina Currituck 19% 7% 1% 36% 14% 1% 63 22 2
North Carolina Dare 27% 14% 2% 49% 27% 4% 94 45 6
North Carolina Gates 13% 4% <1% 25% 8% <1% 41 12 0
North Carolina Hertford 14% 4% <1% 28% 8% <1% 46 11 0
North Carolina Hyde 28% 14% 2% 50% 27% 3% 97 45 5
North Carolina New Hanover 21% 10% 2% 40% 20% 4% 71 32 6
North Carolina Onslow 22% 11% 2% 41% 22% 3% 74 35 5
North Carolina Pamlico 22% 10% 1% 40% 20% 1% 73 31 2
North Carolina Pasquotank 17% 6% 0% 32% 13% 1% 55 19 1
North Carolina Pender 23% 11% 2% 42% 22% 4% 76 35 6
North Carolina Perquimans 16% 6% 0% 31% 12% 1% 52 18 1
North Carolina Tyrrell 20% 8% 1% 36% 17% 1% 64 26 2
North Carolina Washington 18% 6% 0% 34% 13% 1% 58 19 1
Rhode Island 10% 4% 1% 20% 8% 1% 32 11 2
Rhode Island Bristol 7% 3% 1% 14% 6% 1% 21 8 2
Rhode Island Kent 8% 3% 0% 15% 6% 1% 23 8 1
Rhode Island Newport 8% 3% 1% 16% 7% 1% 25 10 2
Rhode Island Providence 8% 3% 0% 16% 6% 1% 25 9 1
Rhode Island Washington/South 9% 3% 1% 18% 6% 1% 28 9 2
South Carolina 33% 15% 4% 57% 29% 8% 118 48 12
South Carolina Beaufort 20% 7% 2% 38% 14% 3% 67 22 5
South Carolina Charleston 24% 11% 2% 43% 21% 5% 80 33 7
South Carolina Colleton 21% 8% 2% 40% 17% 4% 71 26 6
South Carolina Georgetown 20% 9% 2% 36% 17% 4% 64 27 6
South Carolina Horry 21% 10% 2% 39% 20% 4% 69 32 6
South Carolina Jasper 21% 7% 1% 39% 14% 3% 69 21 4
Texas 36% 20% 8% 61% 36% 16% 133 64 24
Texas Aransas 10% 5% 2% 19% 11% 5% 30 16 7
Texas Brazoria 16% 8% 2% 30% 16% 5% 51 25 7
Texas Calhoun 13% 7% 2% 25% 13% 5% 41 20 7
Texas Cameron 12% 7% 2% 24% 13% 5% 39 20 7
Texas Chambers 16% 8% 2% 30% 16% 5% 51 24 7
Texas Galveston 18% 9% 3% 34% 19% 6% 58 29 8
Texas Harris 15% 8% 2% 29% 16% 4% 49 24 6
Texas Jefferson 15% 8% 2% 29% 16% 4% 49 25 6
Texas Kenedy 12% 7% 3% 24% 14% 7% 39 21 10
Texas Kleberg 12% 6% 3% 23% 13% 6% 36 19 8
Texas Matagorda 17% 9% 4% 32% 17% 8% 54 27 11
Texas Nueces 12% 7% 3% 24% 14% 6% 39 21 9
Texas Refugio 11% 5% 2% 21% 9% 4% 34 14 6
Texas San Patricio 11% 6% 2% 21% 11% 5% 34 17 7
Texas Willacy 11% 6% 3% 22% 13% 6% 35 19 8
Virginia 25% 10% 1% 46% 20% 1% 86 31 2
Virginia Accomack 14% 4% <1% 27% 9% <1% 44 13 0
Virginia Gloucester 11% 2% <1% 21% 5% <1% 34 7 0
Virginia Hampton 14% 4% <1% 27% 8% <1% 44 12 0
Virginia Lancaster 10% 2% <1% 20% 3% <1% 31 5 0
Virginia Mathews 11% 2% <1% 21% 5% <1% 34 7 0
Virginia Middlesex 11% 2% <1% 21% 3% <1% 33 5 0
Virginia Newport News 11% 3% <1% 22% 6% <1% 35 8 0
Virginia Norfolk 13% 4% <1% 26% 8% <1% 42 12 0
Virginia Northampton 14% 4% <1% 27% 9% <1% 44 13 0
Virginia Northumberland 10% 2% <1% 19% 3% <1% 30 5 0
Virginia Poquoson 12% 3% <1% 24% 6% <1% 38 9 0
Virginia Portsmouth 12% 3% <1% 24% 7% <1% 38 10 0
Virginia Suffolk 13% 4% <1% 25% 8% <1% 41 11 0
Virginia Virginia Beach 16% 6% <1% 30% 12% <1% 50 18 0
Virginia York 13% 3% <1% 25% 6% <1% 40 9 0
Canada 29% 15% 1% 51% 29% 1% 100 48 2
New Brunswick 18% 4% 0% 33% 8% 1% 57 11 1
Newfoundland and Labrador 14% 8% 0% 26% 16% 1% 43 24 1
Nova Scotia 23% 14% 0% 42% 27% 1% 77 44 1
Prince Edward Island 5% 3% <1% 9% 6% <1% 14 9 0
Mexico 50% 25% 9% 76% 44% 19% 204 83 29
Campeche 26% 11% 2% 47% 21% 5% 89 33 7
Quintana Roo 38% 18% 8% 63% 33% 15% 139 57 23
Tabasco 13% 3% <1% 25% 6% <1% 40 8 0
Tamaulipas 26% 14% 5% 47% 26% 9% 89 43 14
Veracruz 25% 10% 1% 44% 20% 3% 83 32 4
Yucatan 30% 14% 6% 53% 26% 12% 107 43 18
Anguilla 19% 9% 4% 35% 18% 8% 61 28 12
Antigua and Barbuda 14% 8% 3% 28% 15% 7% 46 23 10
Aruba 5% 2% <1% 10% 5% <1% 15 7 0
Bahamas, The 55% 30% 16% 81% 53% 30% 237 106 50
Barbados 15% 3% 1% 28% 6% 1% 47 9 2
Belize 23% 10% 3% 42% 19% 6% 76 30 9
Bermuda 21% 13% 6% 40% 26% 11% 71 42 17
Bonaire 4% 2% <1% 8% 3% <1% 11 5 0
Cabo Verde 8% 1% <1% 16% 3% <1% 25 4 0
Cayman Islands 21% 12% 4% 40% 23% 8% 71 37 11
Costa Rica 3% 1% 0% 6% 2% 1% 8 3 1
Cuba 50% 29% 13% 76% 51% 25% 204 102 41
Curacao 4% 2% <1% 9% 4% <1% 13 6 0
Dominica 18% 7% 3% 33% 14% 7% 57 21 10
Dominican Republic 34% 19% 8% 58% 35% 17% 123 61 26
Grenada 14% 3% 0% 28% 7% 1% 46 10 1
Guadeloupe 18% 9% 3% 34% 18% 7% 59 28 10
Guatemala 21% 8% 1% 38% 15% 3% 68 23 4
Haiti 24% 13% 5% 44% 26% 9% 82 42 14
Honduras 39% 14% 5% 64% 28% 11% 146 46 16
Jamaica 26% 12% 4% 46% 23% 8% 88 36 12
Martinique 18% 6% 2% 34% 11% 4% 59 17 6
Montserrat 14% 7% 3% 26% 14% 6% 43 22 8
Nicaragua 19% 8% 4% 36% 16% 8% 62 25 11
Panama 1% 0% <1% 1% 1% <1% 2 1 0
Puerto Rico 22% 12% 5% 40% 24% 9% 73 38 14
Saba 12% 8% 3% 24% 15% 6% 39 23 9
Saint Kitts and Nevis 18% 10% 4% 34% 20% 9% 59 32 13
Saint Lucia 22% 5% 2% 40% 10% 3% 73 15 5
Saint Martin 14% 8% 4% 26% 15% 8% 43 23 11
Saint Vincent and the Grenadines 22% 4% 1% 41% 9% 1% 74 13 2
Sint Eustatius 13% 8% 4% 25% 15% 8% 40 23 11
Sint Maarten 14% 8% 4% 26% 15% 8% 43 23 11
Trinidad and Tobago 4% 1% <1% 8% 2% <1% 11 3 0
Turks and Caicos 22% 10% 5% 40% 20% 11% 73 32 16
UK Virgin Islands 21% 11% 5% 39% 22% 10% 69 35 15
US Virgin Islands 18% 10% 4% 33% 19% 8% 57 30 12