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This is the final warning / advisory for this storm as it has weakened below warning levels and/or the storm system is no longer a tropical cyclone.
Current Wind Speed 35 knots / MPH
Max Predicted Wind Speed 35 knots / MPH at
Spaghetti models for Marcus can be found here:
Marcus spaghetti models page »
IDW27600 TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION Issued by PERTH TROPICAL CYCLONE WARNING CENTRE at: 1228 UTC 24/03/2018 Name: Ex-Tropical Cyclone Marcus Identifier: 20U Data At: 1200 UTC Latitude: 27.6S Longitude: 107.5E Location Accuracy: within 30 nm [55 km] Movement Towards: south [170 deg] Speed of Movement: 13 knots [24 km/h] Maximum 10-Minute Wind: 35 knots [65 km/h] Maximum 3-Second Wind Gust: 50 knots [95 km/h] Central Pressure: 996 hPa Radius of 34-knot winds NE quadrant: Radius of 34-knot winds SE quadrant: 120 nm [220 km] 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: T2.5/3.0/W2.0/24HRS STT:W0.6/06HRS Pressure of outermost isobar: 1004 hPa Radius of outermost closed isobar: 120 nm [220 km] FORECAST DATA Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure [UTC] : degrees : nm [km]: knots[km/h]: hPa +06: 24/1800: 28.5S 107.6E: 040 [080]: 035 [065]: 997 +12: 25/0000: 29.3S 107.7E: 055 [100]: 030 [055]: 998 +18: 25/0600: 30.1S 108.2E: 065 [125]: 025 [045]: 998 +24: 25/1200: 31.1S 109.3E: 080 [145]: 025 [045]: 999 +36: 26/0000: : : : +48: 26/1200: : : : +60: 27/0000: : : : +72: 27/1200: : : : +96: 28/1200: : : : +120: 29/1200: : : : REMARKS: Ex-TC Marcus was located using animated IR imagery and microwave. The system has encountered strong shear over the last 24 hours and the low level centre is now fully exposed with no deep convection near the centre. Dvorak: Shear Pattern of more than 1.25 to the DG gives a DT of 1.5. W+ trend yields a MET of 3.5 and adj MET is 3.0. DT is clear cut however FT is constrained to 2.5 to be within MET+/-1. CI maintained at 3.0. ADT has had raw T# of 1.5 for over 6 hours with CI of 2.8 for CIMSS and 2.0 for NESDIS. Intensity is set at 35 knots however with gales reduced to one quadrant the system has been downgraded below tropical cyclone intensity. The mid-level trough to the west of Marcus is now the dominant steering mechanism. CIMMS shear is now 26 knots however shear of 40+ knots is along the forecast track to the south of the system and it is now moving over cooler water with environmental conditions consistent with rapid weakening. Copyright Commonwealth of Australia == There will be no further bulletins for this system unless it reintensifies.
Public Advisory not available for this storm.
Forecast Discussion not available for this storm.
Time | Speed | Location | Status |
---|---|---|---|
35 knots | -27.6, 107.5 | ||
35 knots | -28.5, 107.6 | ||
30 knots | -29.3, 107.7 | ||
25 knots | -30.1, 108.2 | ||
25 knots | -31.1, 109.3 |
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