Weather Warnings - Tropical Cyclone Bulletin

Tropical Cyclone Technical Bulletin: AUSTRALIA - Western Australia
Issued by Australian Government Bureau of Meteorology TROPICAL CYCLONE WARNING CENTRE
at: 1332 UTC 10/04/2024
Name: Ex-Tropical Cyclone Olga
Identifier: 11U
Data At: 1200 UTC
Latitude: 20.4S
Longitude: 115.2E
Location Accuracy: within 15nm (30 km)
Movement Towards: south southwest (209 deg)
Speed of Movement: 9 knots (16 km/h)
Maximum 10-Minute Wind: 35 knots (65 km/h)
Maximum 3-Second Wind Gust: 50 knots (95 km/h)
Central Pressure: 1002 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant: 60 nm (110 km)
Radius of 34-knot winds SW quadrant: 40 nm (None km)
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: T1.5/2.0/W1.5/24HRS STT:W0.5/06HRS
Pressure of outermost isobar: 1011 hPa
Radius of outermost closed isobar: 70 nm (130 km)

FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
(UTC) : degrees : nm (km): knots(km/h): hPa
+06: 10/1800: 21.1S 114.7E: 035 (065): 035 (065): 1000
+12: 11/0000: 21.7S 114.3E: 055 (100): 030 (055): 1002
+18: 11/0600: 22.2S 114.0E: 060 (115): 030 (055): 1002
+24: 11/1200: 22.6S 113.8E: 070 (135): 030 (055): 1000
+36: 12/0000: None None: None (None): None (None): None
+48: 12/1200: None None: None (None): None (None): None
+60: 13/0000: None None: None (None): None (None): None
+72: 13/1200: None None: None (None): None (None): None
+96: 14/1200: None None: None (None): None (None): None
+120: 15/1200: None None: None (None): None (None): None

REMARKS:
Ex-Tropical Cyclone Olga continues to weaken in an unfavourable environment due to strong northwest vertical wind shear and dry air entrainment. There is no longer deep convection associated with the system centre, with the low level centre clearly visible on satellite imagery. Gales were observed to the south of the centre earlier this evening at Varanus Island, but these have since eased. Intensity assessed as 35kn based on these observations, slightly higher than subjective Dvorak. Dvorak analysis: No pattern can be assigned due to the lack of deep convection. MET is 1.5 based on a 24 hour W+ trend, unadjusted. FT+1.5 with CI held at 2.0. Available objective aids: ADT 29 kts, AiDT 33 kts, DPRINT 28 nts (all one-minute mean) Olga has been de-classified as a tropical cyclone as gales are only in southern quadrants. These gales are expected to ease in the next 6-12 hours, or possibly sooner based on recent observations and satellite imagery. With the continued weakening of ex-TC Olga, this will be the final bulletin.

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

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