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