After a long track eastwards across the Indian Ocean it eventually crossed the Western Australian coastline on the Eighty Mile Beach near the Sandfire Roadhouse during the early afternoon of 17 December 1999.
The cyclone crossed the coast just to the west of Whim Creek between Port Hedland and Karratha on 8:30 am (WST) 15 December 1999.
High winds and flooding caused extensive structural damage at many stations in the Pilbara and mining operations were suspended at many sites.
The 113-year-old Whim Creek Hotel suffered major damage with the top floor lost, and the town of Newman experienced some flooding (500 mm (20 in) of rain was recorded).
[2] Ten hours prior to landfall on the Australian coastline, John was moving southwards directly towards Karratha and Dampier.
[3] Tropical Cyclone Kirrily formed about 350 km (220 mi) east of the Cocos Islands on 24 January 2000 and moved west southwest towards the Western Australian coast.
[1] A low-pressure area developed within the monsoon trough on 1 February, while located about 250 km (160 mi) south of the Indonesian island of Bali.
[5] Associated convection was initially sparse, and over the subsequent few days the system tracked west-southwestward without much development,[4] moving around a large ridge over northwestern Australia.
An hour prior, the Joint Typhoon Warning Center (JTWC) initiated advisories on Tropical Cyclone 11S, while the storm was located about 215 km (134 mi) south-southeast of Christmas Island.
[5] The storm developed increased convective banding, aided by decreasing wind shear, and quickly intensified.
[4] Early on 5 February, the PTCWC upgraded Leon to a Category 3 on the Australian scale, estimating 10 minute winds of 120 km/h (75 mph).
[5] On 6 February, the cyclone developed an eye in the center of the convection that was only visible on Special sensor microwave/imager, not on satellite imagery.
[4] On the same day, the JTWC upgraded Leon to the equivalent of a minimal hurricane, estimating 1 minute winds of 140 km/h (87 mph).
[9] A long lived cyclone lasting 13 days, Steve actually made landfall four times on the Australian mainland.
It formed on 25 February 2000 and crossed the Queensland coast north of Cairns the same day as a strong Category 2 in the Australian Scale.
[11] Severe Tropical Cyclone Norman developed from a low that moved off the west Kimberley coast on 29 February 2000.
Norman quickly reached a peak intensity as a Category 4 cyclone on 2 March with a central pressure estimated at 920 hPa, while about 780 km (480 mi) to the west-northwest of Exmouth.
The low was named Tropical Cyclone Olga on 17 March while located approximately 570 km (350 mi) to the north of Exmouth.
Tessi's winds unroofed buildings, uprooted trees, downed power lines in the area between Ingham and Ayr.
The system rapidly intensified to Category 2 during the morning of the 4th and tracked westward toward the north Queensland tropical coast.
Severe Tropical Cyclone Paul passed about 200 km (120 mi) to the south of the Cocos (Keeling) Islands during the 17th and the central pressure was estimated to be about 940 hPa.
Perth issued the final warning for TC Paul on 20 April when the Category 1 cyclone was in the vicinity of latitude 14.7° south and longitude 94.3° east.
Rosita struck the Kimberley coast as a Category 4 at 0100 hours WST on 20 April 2000, 40 km (25 mi) south of Broome.
The small cyclone left severe structural damage in Eco Beach tourist resort, Yardoogarra and Thangoo Stations.
[1] On 2 December, TCWC Brisbane reported that a tropical low had developed within a monsoonal trough about 325 km (202 mi) to the north of Cook Town.
Tropical cyclones are named if they are non-frontal low-pressure systems of synoptic scale developing over warm waters, or if Dvorak intensity analysis indicate the presence of gale force or stronger winds near the centre.
[23] Each Australian Tropical Cyclone Warning Centre (Perth, Darwin, and Brisbane) maintains a list of names arranged alphabetically and alternating male and female.
The Bureau of Meteorology retired the names John, Rosita, Steve and Tessi, replacing them with Joseph, Robyn, Stan and Tammie respectively.