AXAU01 APRF 120116
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE
at: 0115 UTC 12/04/2021

Name: Ex-Tropical Cyclone Seroja
Identifier: 22U
Data At: 0000 UTC
Latitude: 32.6S
Longitude: 120.2E
Location Accuracy: within 30 nm [55 km]
Movement Towards: southeast [128 deg]
Speed of Movement: 33 knots [60 km/h]
Maximum 10-Minute Wind: 30 knots [55 km/h]
Maximum 3-Second Wind Gust: 50 knots [95 km/h]
Central Pressure: 988 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant:
Radius of 34-knot winds SW quadrant:
Radius of 34-knot winds NW quadrant:
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: NA
Pressure of outermost isobar: 996 hPa
Radius of outermost closed isobar: 95 nm [175 km]

FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+06: 12/0600: 34.9S 123.7E: 055 [100]: 030 [055]: 990
+12: 12/1200: 37.2S 127.2E: 075 [140]: 030 [055]: 988
+18: 12/1800: : : :
+24: 13/0000: : : :
+36: 13/1200: : : :
+48: 14/0000: : : :
+60: 14/1200: : : :
+72: 15/0000: : : :
+96: 16/0000: : : :
+120: 17/0000: : : :

REMARKS:
Current position of Seroja is uncertain due to a separation between surface
obs and the above surface circulation and rainfall.

As the system is over land Dvorak is not applicable.

The system made landfall between Kalbarri and Northampton around 1130Z as a category 3 system. It has continued to weaken as it moves southeast over land under the influence of a mid-level high to the northeast and an approaching mid-latitude trough to the southwest.

It is expected to move offshore from the south coast of WA at about midday WST Monday.

Copyright Commonwealth of Australia
==
There will be no further bulletins for this system unless it reintensifies.
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