Caribbean On October 8, two crew members on reconnaissance aircraft were injured due to turbulence while observing Hazel; one requiring hospitalization.
Puerto Rico suffered its worst flooding since 1899 as a result of the hurricane. Due to timely warnings, only nine people were killed (eight by drowning and one by a landslide), but infrastructure, buildings, and agricultural areas suffered serious damage, and over 11,000 people were evacuated from flooded areas. In Haiti, Hazel brought flash floods which destroyed numerous villages, and high winds which caused considerable damage to major cities. The death toll was estimated to be as high as 1,000 people; most of the casualties drowned when the water flowed in a flood down the mountains, some of which were as high as . The situation was exacerbated by deforestation, which lessened the ability of the soil to hold water. Haiti's South Peninsula took the brunt of the storm: the largest town,
Aux Cayes, reported at least 200 casualties, while the second-largest town of
Jérémie was reported to have been swept into the sea, with at least 200 more casualties. Damage in Aux Cayes was estimated to be $500,000 (1954 USD). Estimates of people left homeless in the wake of Hazel are as high as 100,000. Objects from Haiti, such as bowls, were reported to have been transported by the hurricane to the Carolinian coast. West of Haiti, the hurricane brought hurricane-force winds to Cuba.
United States In South Carolina, the storm produced tides along the coast. Hundreds of buildings were destroyed, including about 80 percent of waterfront dwellings in
Myrtle Beach. As a result of the high storm surge, the low-lying sandy barrier islands were completely flooded. Two piers in Myrtle Beach were damaged. In
North Myrtle Beach, a three-story hotel and an pier were washed out to sea. At
Cherry Grove Beach, 75 residences were demolished, while at
Pawleys Island, 40 homes were destroyed, while numerous others were damaged. One death occurred in South Carolina. Damage in the state totaled about $27 million.
Brunswick County, North Carolina, suffered the heaviest damage, where most coastal dwellings were either destroyed or severely damaged. For example, in
Long Beach, North Carolina, only five of the 357 buildings were left standing. According to NOAA, "every pier in a distance of of coastline was demolished". after Hazel With such high winds state-wide, heavy damage was caused to forests, and to property as a result of falling trees. However, since the Carolinas, like the rest of the Southeastern United States, were suffering from a severe drought, the heavy rainfall brought by Hazel was welcome. In North Carolina, the most rain was received in the interior of the state:
Robbins received of rain, and
Carthage received . Damages in the Carolinas amounted to $163 million, with $61 million incurred by beachfront property. Total damage in the United States ranged from $281 million to $308 million. One building was demolished and several others were damaged in
Portsmouth. In
Richmond, 200 store fronts were damaged, while part of the steeple at
Trinity Methodist Church was toppled. Additionally, a
microwave tower in
Warsaw was knocked over. Rain amounts were heavier on the western side of the storm. In West Virginia, the average amount of rain received was with localized amounts of reported in the Appalachians. To the north in Pittsburgh, only of rain was reported. To the east, the Washington, D.C. area was particularly affected, and considerable flooding was reported in the Virginias and Maryland. Much of the grounds of the
Naval Academy in Annapolis were flooded, putting midshipmen to work the next day to clean up the debris. New Jersey escaped major flooding as the high tide was low enough, but to the south in
Chesapeake Bay, the majority of crab pots were destroyed. Hazel lost a considerable amount of moisture when crossing the Allegheny Mountains, which raised rivers and streams in the
Pittsburgh area significantly above the flood mark. In Pennsylvania, the winds were still high enough to unroof several homes. The tower of television station
WTVE in
Elmira was toppled by wind gusts; the station was off the air for 19 months.
Canada After weeks of unusually high rainfall saturated the
Greater Toronto Area, Hazel dropped additional rainfall, peaking at in
Snelgrove, Ontario. In three hours, the city received of precipitation. Most of these rains ran off into rivers and creeks of Toronto, which raised water levels by as much as . in Toronto was left submerged after the
Humber River overflowed its banks.|alt=A generally flat area is completely submerged by water; trees are scattered throughout. Floodwaters slowly rose in the
Holland Marsh – a bowl-shaped valley near
Bradford – allowing people to escape to the town.
Highway 400, which passes through the marsh, was under as much as of water in some places when as much of water backed up. Much of the crops in the area were either swept away or ruined. After the water pumps failed due to debris, better equipment allowed the Holland Marsh to be drained by November 13. The
Humber River in the west end of Toronto caused the most destruction as a result of an intense flash flood after most minor rivers and creeks drained into it. A team of five volunteer firefighters were killed when their fire truck was swept away as they were responding to help a stranded motorist. Communities in the Humber floodplain were devastated. In
Woodbridge, the river swelled from its usual width of at its narrowest point to , and left hundreds homeless and nine dead. The Humber swept away of
Raymore Drive and 14 nearby homes, killing 35 people out of the 81 Canadian fatalities. The rise of the river was unprecedented and the residents did not evacuate, which led to the high death toll. The death toll of 81 people has not since been equaled by a
natural disaster in Canada. In addition to the casualties, over 4,000 families were left homeless. The Department of Public Safety and Emergency Preparedness Canada estimates the total cost of Hurricane Hazel for Canada, taking into account long-term effects such as economic disruption, the cost of lost property, and recovery costs, to be
C$1.03 billion in 2004 dollars (1.59 billion in 2024 dollars).{{cite web|first1=Peter | last1 = Bowyer|year=2004|access-date=5 October 2024|work = Canadian Hurricane Centre | publisher = King’s Printer for Canada|url=http://www.ec.gc.ca/ouragans-hurricanes/default.asp?lang=en&n=E1111740-1|title=Hurricane Hazel – Evaluation of Organizational Response ==Aftermath==