Australian Government Bureau of Meteorology
Tropical Cyclone Advice
Tropical Cyclone Warning Centre
Transmitters serving the Karratha to Onslow areas, including Mardie, are requested to USE the Standard Emergency Warning Signal before broadcasting the following warning.
TOP PRIORITY FOR IMMEDIATE BROADCAST
TROPICAL CYCLONE ADVICE NUMBER 20
Issued at 11:07 PM WST on Saturday 07 February 2026
Headline:
Severe Tropical Cyclone Mitchell (21U), category 3, is moving southwest to the north of Dampier.
Areas Affected:
Warning zone: Whim Creek to Coral Bay, including Karratha, Onslow, and Exmouth, and extending inland through the western Pilbara to include Pannawonica.
Watch zone: Coral Bay to Carnarvon and adjacent inland areas.
Cancelled zone: None.
Details of Severe Tropical Cyclone Mitchell 21U at 11:00 pm AWST:
Intensity: Category 3, sustained winds near the centre of 130 kilometres per hour with wind gusts to 185 kilometres per hour.
Location: within 30 kilometres of 20.1 degrees South 116.4 degrees East, estimated to be 220 kilometres northeast of Onslow and 85 kilometres north northwest of Karratha.
Movement: west southwest at 15 kilometres per hour.
Severe Tropical Cyclone Mitchell (21U) is north of Dampier and is at category 3 strength.
Severe Tropical Cyclone Mitchell is forecast to move to the southwest closer to the Pilbara coast overnight, and then track close to the west Pilbara coast during Sunday. Late on Sunday it is forecast to move over land near Onslow, before taking a more southerly track over land during Monday.
Hazards:
VERY DESTRUCTIVE WIND GUSTS to 205 km/h are possible over the coastal parts of the Pilbara around Karratha, Dampier, and Wickham tonight especially if Mitchell moves closer than forecast, extending west to Onslow during Sunday as the destructive core of Mitchell moves along the coast.
DESTRUCTIVE WIND GUSTS to 160 km/h are forecast around Karratha, Dampier, and Wickham tonight, extending west towards Onslow during Sunday and possibly Exmouth Sunday night.
GALES with DAMAGING WIND GUSTS to 120 km/h are occurring along coastal areas between Whim Creek and Dampier, extending west to Mardie and possibly Pannawonica later tonight. GALES with DAMAGING WIND GUSTS to 120 km/h are forecast to extend west to Onslow, Exmouth, and inland parts of the western Pilbara on Sunday.
Widespread moderate to HEAVY RAINFALL which may lead to FLASH FLOODING is likely overnight with this risk persisting through the weekend for the central and west Pilbara coast, extending to the west Gascoyne region on Monday. Local areas of INTENSE rainfall leading to SEVERE FLASH FLOODING may develop around the central Pilbara coast west of Wickham overnight and Sunday morning.
ABNORMALLY HIGH TIDES could cause SERIOUS FLOODING in the Karratha region early Sunday morning, and then in the Onslow region on the Sunday afternoon.
Elsewhere on the west Pilbara coast including Exmouth, tides are likely to rise above the normal high tide mark on Saturday and Sunday which may produce FLOODING of low-lying coastal areas.
Recommended Action:
Ensure you know what to do in a cyclone. For the latest DFES community alerts and warnings visit www.emergency.wa.gov.au or download the Emergency WA app.
Cyclone advices and DFES Alerts are available by dialling 13 DFES (13 3337)
A map showing the track of the cyclone is available at:
http://www.bom.gov.au/cyclone
Forecast
Nickol (20.7364°S, 116.7998°E, 12m AMSL) set as my default location ›
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7 day forecast
Today: Cloudy. Very high chance of rain. The chance of a thunderstorm. Thunderstorms possibly severe with destructive winds and heavy rain which may lead to flash flooding. Destructive wind gusts exceeding 170 km/h possible depending on movement and development of Severe Tropical Cyclone Mitchell along the coast and adjacent inland areas. Overnight temperatures falling to the low to high 20s with daytime temperatures reaching 29 to 35.
Forecast for Nickol (20.7364°S, 116.7998°E, 12m AMSL) Sun Mon Tue Wed Thu Fri Sat Summary
Minimum 26° 28° 27° 26° 27° 27° 27° Maximum 30° 31° 31° 32° 32° 32° 32° Chance of rain 80% 80% 70% 10% 10% 10% 60% Likely amount 5-10mm 1-5mm < 1mm < 1mm < 1mm < 1mm 1-5mm UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme Fire Danger Rating High High High High - - - Frost risk Nil Nil Nil Nil Nil Nil Nil 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm Wind speed 56
(km/h)45
(km/h)28
(km/h)28
(km/h)20
(km/h)29
(km/h)19
(km/h)28
(km/h)15
(km/h)24
(km/h)18
(km/h)24
(km/h)12
(km/h)22
(km/h)Wind direction NNE NNE N NNW W WNW SW WNW S NNW SSE N SSE N Relative humidity 89% 78% 79% 74% 81% 71% 75% 65% 69% 60% 70% 65% 79% 68% Dew point 25°C 25°C 26°C 25°C 25°C 24°C 24°C 24°C 23°C 23°C 24°C 24°C 26°C 25°C -
Sunrise and sunset times
Sunrise / Sunset for Nickol (20.7364°S, 116.7998°E, 12m AMSL) First light Sunrise Sunset Last light Moon rise Moon set Moon phase Last quarter New moon First quarter Full moon 5:37am WST 6:00am WST 6:54pm WST 7:17pm WST 10:52pm WST 11:27am WST
Waning gibbous
Last quarter Feb 09 New moon Feb 17 First quarter Feb 24 Full moon Mar 03 -
Warnings
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Temperature for next 7 days
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Rain for next 7 days