2002 TROPICAL CYCLONE SEASON SUMMARY

Three tropical cyclones entered the Canadian Hurricane Centre (CHC) Response Zone (RZ) during the 2002 season; this is almost half of the previous 7-year average of 5.7. In addition to the three named storms were three systems which became extratropical prior to entering the RZ. A small unnamed TC-like system in July moved quickly through waters south of Nova Scotia.

For the third consecutive year, a tropical cyclone made landfall in Atlantic Canada. Hurricane Gustav, which came ashore in Nova Scotia at 1:30 a.m. ADT, September 12, is the first Canadian landfalling hurricane (in transition to extratropical) captured on Doppler radar. (Note: The last landfalling hurricane in Canada was Michael in 2000, and the last landfalling hurricane in Nova Scotia was Hortense in 1996).

The CHC issued 68 bulletins during 2002 (not including corrections).

Tropical Storm Arthur entered the Laurentian Fan and Southwestern Grand Banks marine forecast areas on July 16 (maximum winds 50 knots or 93 km/h) and tracked through the Avalon Peninsula of Newfoundland on July 17 as a post tropical cyclone (maximum winds 45 knots or 83 km/h). Rainfall amounts were not significant. 15 bulletins issued.

Gustav was upgraded from a tropical storm to the Atlantic's first hurricane of the season at 11:50 a.m. ADT on September 11, only hours before moving into southwestern Maritime waters. On September 12, Gustav made landfall along the southern coast of Cape Breton, N. S. (near St. Esprit Island) at 1:30 a.m. ADT. Reports of heavy rain, high winds, and minor flooding from storm surge were received from around Atlantic Canada in the wake of the storm. Gustav was downgraded to a post tropical cyclone as it exited Nova Scotia and entered Newfoundland on September 12 shortly before 6:30 a.m. NDT. 18 bulletins issued.

The highest recorded rainfall was 102 mm in Ashdale, N.S. (all Nova Scotia sites received at least 50 mm). Highest reported wind speeds were 122 km/h from both St. Paul Island and Sable Island, N.S. Storm surges throughout the southern Gulf of St. Lawrence coincided (within a few hours) of a run of high astronomical tides, resulting in localized coastal flooding. A noteworthy point for water levels in Charlottetown, P.E.I., is that had the highest surge arrived 4 hours earlier to coincide exactly with the highest tide, an additional 70 cm of elevation would have pushed levels to 210 cm-near record values that would have resulted in flooding portions of that city.

Gustav is the first landfalling hurricane in Canada to be captured on Doppler radar, passing only 20-30 km southeast of the new Doppler site at Marion Bridge, N.S. (installed June 2002). The Doppler data indicated that Gustav was in transition between tropical and extratropical.

Isidore, one of the season's two intense hurricanes, moved onshore in Louisiana on the morning of September 26. It weakened rapidly as it tracked north and passed south of the Great Lakes as a post tropical cyclone on September 27 and through New Brunswick on September 28. Isidore was predominantly a rain event for southern Ontario and Québec and portions of the Maritimes. Rainfall amounts in Canada were moderate with locations from southwestern Ontario through much of Atlantic Canada reporting between 25-35 mm. 1 bulletin was issued.

Josephine was a minimal tropical storm of 35 knots (eastern quadrant only) as it entered the southeastern extremity of the RZ at 0430Z, September 19. As predicted, the storm centre remained beyond 200 nm from marine forecast areas. Accordingly, no gales were reported and no bulletins were issued.

Kyle ended it's lengthy life as a tropical cyclone on October 12, just outside the southwestern edge of the RZ, about 350 km south of Long Island. Despite considerable attention paid to Kyle by the CHC, gale force winds (63 km/h) never reached offshore Maritime waters even though Kyle tracked eastward through the southern RZ on September 12-13 as a post tropical cyclone. 12 bulletins were issued.

In addition to the tropical cyclones outlined above, a hybrid cyclone passed near Sable Island on July 7th with maximum winds near 74 km/h and another one near the Avalon Peninsula of Newfoundland on September 5th with maximum winds near 65 km/h. Although their structure lacked considerable tropical characteristics, both had sufficient tropical aspects to warrant special mention (i.e. striking tropical signatures on satellite imagery).

Preemptive bulletins were also issued for TS Cristobal (10), TS Hanna (1), Post Tropical Cyclone Lili (2), and TD 14 (9), although these systems did not affect Canada. Coordination with U.S. National Hurricane Center and affected Canadian Regional Weather Centres (Ontario, Québec, New Brunswick, Nova Scotia, and Newfoundland) preceded the issuance of bulletins.

Important Notices