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Canadian Tropical Cyclone Season Summary for 1975

1975 Storm Tracks Image
1975 Storm Tracks Image

Tropical Storm Amy (June 27 to July 4, 1975)

On June 26, 1975, a depression, that would become Tropical Storm Amy, formed just north of the western Bahamas. The low pressure system attained winds of gale force late on the 28th as the centre was skirting the North Carolina outer banks. During the night, the storm turned sharply eastward. Tropical characteristics were indicated on June 28 and 29 and Amy was named. Strong vertical shears associated with a trough in the westerlies, however, had given Amy characteristics much more typical of a subtropical storm by the evening of June 29. During the next three days Amy meandered generally northeastward with minor fluctuations. While the system occasionally approached hurricane strength and made attempts to reacquire tropical characteristics, it remained predominately subtropical in nature. However, the name was retained because of Amy’s close proximity to land, in order to avoid confusion in public releases and forecasts. On July 3, Amy accelerated rapidly northeastward. The centre of Amy passed about 240 kilometres southeast of Cape Race, Newfoundland, on July 4, and lost all tropical characteristics that afternoon.

The high winds and heavy rain associated with Amy remained offshore of both North Carolina and Newfoundland. However, its slow movement off the Carolina coast caused prolonged northeasterly winds that produced large swells and tides of 0.6 to 1.2 metres above normal along the North Carolina outer banks. This caused some beach erosion and temporary flooding of highways, but damage was minor.

Hurricane Blanche (July 24 to July 28, 1975)

A tropical depression developed about 925 kilometres north of Hispaniola late on July 23, 1975. Slow but steady intensification of the depression occurred and late on the 25th, sustained winds reached gale force. At this point, the centre was located about 555 kilometres south of Cape Hatteras, North Carolina. Blanche turned to the northeast, and steadily deepened. The storm reached hurricane strength early on July 27 about 555 kilometres east of Cape Hatteras. Hurricane Blanche turned toward the north-northeast.

The Canadian Weather Service issued a hurricane warning for Nova Scotia early in the morning on July 28. The hurricane weakened only slightly before striking the southern tip of Nova Scotia about daybreak on the 28th. It became extratropical before reaching the Gulf of St. Lawrence at midday.

Halifax, Nova Scotia, measured sustained winds of 83 kilometres per hour (45 knots) with gusts to 129 kilometres per hour (70 knots), and observed the eye of Blanche on radar. Western Head, near Cape Sable, had sustained winds of 87 kilometres per hour (47 knots), and a minimum pressure of 987 millibars. Nearby Shelbourne had a minimum pressure of 989 millibars. As the system was becoming extratropical, Grindstone Island in the Gulf of St. Lawrence reported sustained winds of 111 kilometres per hour (60 knots).

There was no loss of life attributed to Blanche. Damage in Nova Scotia was minor, consisting of small boats washed ashore and trees blown down. As is frequently the case, rainfall with Blanche proved beneficial, bringing an end to a prolonged dry period over the region. The greatest accumulation of precipitation was 7.8 centimetres in Chatham, New Brunswick.

Hurricane Faye (September 18 to September 29, 1975)

A depression was formed about 925 kilometres off of the Cape Verde Islands on September 18, 1975. By the 19th, the winds had attained tropical storm strength and the system was designated Faye. The storm moved steadily westward during the next four days and weakened to a tropical depression on the 23rd, while located about 925 kilometres northeast of the Leeward Islands. The depression drifted northward and then westward during the next 48 hours, passing through the mid-Atlantic upper trough axis. Faye regained storm and then hurricane strength on September 25, while beginning a northwesterly course that would continue until the 27th. The hurricane turned sharply to the northeast on the morning of the 27th. Thereafter, Faye developed an east-northeasterly to easterly course with rapid acceleration. The hurricane lost all tropical characteristics on September 29, as it moved eastward some 370 kilometres north of the Azores.

Damage on Bermuda was minor since the island remained on the weak side of the hurricane.

Hurricane Gladys (September 22 to October 4, 1975)

The depression that would become Hurricane Gladys formed on September 22, 1975, while located near 35° West and reached tropical storm strength on the 24th near 40° West. Gladys was able to reach hurricane intensity on the 25th, however, it barely maintained hurricane strength for the next four days. Gladys began intensifying late on the 28th and by the evening of the 29th, the hurricane had a central pressure of 975 millibars and a clearly defined eye, as it passed about 650 kilometres north of Puerto Rico. For the next 36 hours, the hurricane continued towards the United States mainland. Gladys began to re-curve on the morning of October 1 and by October 2 the centre was a little over 740 kilometres east of Norfolk, Va.

Gladys accelerated to the northeast later on October 2 and briefly threatened Newfoundland. The hurricane weakened only slightly before crossing the North Atlantic shipping lanes. It was moving at a forward speed of better than 83 kilometres per hour (45 knots) around daybreak on the 3rd as it passed about 130 kilometres southeast of Cape Race, Newfoundland. Widespread gales covered the western Atlantic as Gladys merged with a strong cold front and became extratropical that afternoon.

No deaths or damages connected with Gladys were reported. Residents of the eastern seaboard were indeed fortunate that the most intense hurricane to threaten the area since Hazel of 1954 remained at sea.

Tropical Storm Hallie (October 24 to October 28, 1975)

Hallie developed from a subtropical depression which originated on October 24, 1975, off the east coast of Florida. The depression moved slowly northward parallel to and within 185 kilometres of Florida and Georgia coastlines, gradually acquiring tropical characteristics. Winds reached tropical storm strength about 185 kilometres east of Charleston, South Carolina. The storm turned northeastward that evening, while skirting the North Carolina outer banks. Hallie merged with a frontal zone several hundred kilometres east of Norfolk, Virginia, late on October 27 and became extratropical.

Damage to the Virginia and Carolina coasts were not significant and there were no casualties associated with Hallie.