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North Cape Charlottetown East Point

29/0800 29/0700 29/0700

989.6 991.2 1000.8

29/0700 29/0617

37 50

48

29/0700

36

52 58

Iles de la Madeleine

29/0800

1000.6

29/0900

40

Location

Date/time (UTC)

Pressure (mb)

Shearwater McNabss Island Halifax International Airport Beaver Island Lunenburg Caribou Point Confederation Bridge Hart Island CHC (West of CYAW)

29/0400 29/0400 29/0400 29/0440 29/0400 29/0546 29/0600 29/0600 29/0310

987.5 982.1 987.4 998.3 990.2 996.3 984.9 1010.1 984.3

JUNE 2005

ANNUAL SUMMARY

Prince Edward Island

1.3

TABLE 6. Selected surface observations for Hurricane Juan, 2429 Sep 2003.

29/0349

54

70

29/0324

81

95

29/0404

54

77

29/0440

55

71

29/0200

36

57

29/0546

46

64

29/0600

60

74

29/0640

46

Date/time

Sustained

Gust

Storm surge

(UTC)a

(kt)b

(kt)

(m)c

1.5

Minimum sea level pressure

Maximum surface wind speed

Canada

Nova Scotia

1767

Storm tide

Total rain

(m)d

(mm)

2.9

56

74

18

940 86

2.9

20 6

a b c d

Date/time is for sustained wind when both sustained and gust are listed. Reports are 2-min sustained. Storm surge is water height above normal astronomical tide level. Storm tide is water height above National Geodetic Vertical Datum (1929 mean sea level).

deep convection increased near the center, and satel- lite-based estimates indicate that the cyclone became Tropical Storm Kate. Even though the system contin- ued to experience moderate southwesterly shearing, it strengthened further while turning northward and northeastward. Kate became a hurricane for a brief pe- riod late on 29 September. Then, while weakening, the cyclone took a hairpin turn around the eastern side of a midtropospheric cyclonic circulation. By 1 October, Kate was moving west-southwestward on the northern side of the cyclonic circulation. It also regained hurri- cane strength that day. Kate continued west-southwest- ward, guided by the steering flow between an anticy- clone to its north and the cyclonic circulation centered to its south. There was a relaxation of vertical shear over the area, and as Kate moved over progressively warmer waters, it strengthened significantly. By 2 Oc- tober, a well-defined eye appeared on geostationary satellite images and the hurricane strengthened to its peak wind intensity estimated at 110 kt at 1800 UTC 4 October, while centered about 565 n mi east-southeast of Bermuda (Fig. 6).

Then the western portion of the hurricanes central dense overcast became partially eroded, signifying a weakening trend. On 56 October, the cyclone turned northward, then accelerated north-northeastward ahead of a deep-layer trough. Kate weakened below

hurricane strength on 7 October while accelerating north-northeastward over cooler waters. Kate also be- gan losing tropical characteristics when cold-air clouds wrapped around the center over the southern semi- circle, and the remaining central convection weakened and became disorganized. The system completed its transition to extratropical status by 0000 UTC 8 Octo- ber, but remained a formidable extratropical storm for two more days while moving northeastward to eastward across the northern Atlantic. It merged with another extratropical low near Scandinavia on 10 October.

Kates estimated peak intensity, 110 kt at 1800 UTC 4 October, is based on a 3-h average objective Dvorak t-number of 5.8.

l. Tropical Storm Larry, 16 October

Tropical Storm Larry moved inland from the Bay of Campeche to over southeastern Mexico, causing wide- spread freshwater floods and five deaths.

1) SYNOPTIC HISTORY

A tropical wave moved across the coast of western Africa on 17 September. Under hostile vertical shear, the wave continued uneventfully across the tropical At- lantic Ocean and Caribbean Sea. On 27 September, a weak surface low pressure system developed on the wave axis located in the western Caribbean Sea. The

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