Overall Green alert Tropical Cyclone for MANGGA-20
in Australia, Cocos (Keeling) Islands

Impact

Tropical Cyclone MANGGA-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (JTWC)
Exposed countries Australia, Cocos (Keeling) Islands
Exposed population No people in Category 1 or higher
Maximum wind speed 74 km/h
Maximum storm surge n.a.
Vulnerability Low (Australia)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
GDACS Current 74 km/h n.a. n.a. 0.5
GDACS Overall 74 km/h 0.0 m n.a. 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

74 km/h Current

Up to 90000 people in Tropical storm (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Green 2 21 May 2020 06:00 102 2.3 million No people Australia
Green 3 21 May 2020 12:00 93 2.3 million No people Cocos (Keeling) Islands, Australia
Green 4 21 May 2020 18:00 93 100 thousand No people Cocos (Keeling) Islands, Australia
Green 5 22 May 2020 00:00 93 70 thousand No people Cocos (Keeling) Islands, Australia
Green 6 22 May 2020 06:00 83 130 thousand No people Cocos (Keeling) Islands, Australia
Green 7 22 May 2020 12:00 83 80 thousand No people Cocos (Keeling) Islands, Australia
Green 8 22 May 2020 18:00 74 2.2 million No people Cocos (Keeling) Islands, Australia
Green 9 23 May 2020 00:00 74 650 thousand No people Cocos (Keeling) Islands, Australia
Green 10 23 May 2020 06:00 74 2.3 million No people Cocos (Keeling) Islands, Australia
Green 11 23 May 2020 12:00 74 90 thousand No people Cocos (Keeling) Islands, Australia

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
2 21 May 2020 06:00 Tropical storm 65 no people no people -9.1, 92.2
GREEN
3 21 May 2020 12:00 Tropical storm 65 no people no people -9.3, 92.5
GREEN
4 21 May 2020 18:00 Tropical storm 65 no people no people -9.8, 93.1
GREEN
5 22 May 2020 00:00 Tropical storm 65 <1000 people no people -10.6, 93.8 Cocos (Keeling) Islands
GREEN
6 22 May 2020 06:00 Tropical storm 65 <1000 people no people -11.1, 94.2 Cocos (Keeling) Islands
GREEN
7 22 May 2020 12:00 Tropical storm 65 <1000 people no people -12.5, 95.2 Cocos (Keeling) Islands
GREEN
8 22 May 2020 18:00 Tropical storm 65 <1000 people no people -14.2, 95.9 Cocos (Keeling) Islands
GREEN
9 23 May 2020 00:00 Tropical storm 65 no people no people -15.6, 96.6
GREEN
10 23 May 2020 06:00 Tropical storm 65 no people no people -17.7, 98.9
GREEN
11 23 May 2020 12:00 Tropical storm 65 no people no people -19.2, 100.8
GREEN
11 24 May 2020 00:00 Tropical storm 65 90000 people no people -23.1, 106.7 Australia
GREEN
11 24 May 2020 12:00 Tropical storm 74 no people no people -27.5, 113.1 Australia
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country
Cocos Is.
Australia

Provinces

Region Province Country Population
Cocos Is. Cocos (Keeling) Islands -
Western Australia Australia 1.6 million people

Populated places

Name Region Province Country City class Population
West Island Cocos (Keeling) Islands Capital <1000 people
Geraldton Western Australia Australia City 27000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Cocos Is CCK 3 Civ. Paved Yes 7900
Carnarvon CVQ 4 Civ. Paved Yes 5500
Useless Loop USL unknown 0
Shark Bay MJK 34 Priv. Paved No 5500
Gascoyne Junction GSC unknown 0
Kalbarri KAX unknown 0
Geraldton GET 37 Civ. Paved Yes 6400
Dongara DOX unknown 0
Mullewa MXU unknown 0
Eneabba ENB unknown 0
Jurien Bay JUR unknown 0
Morawa MWB 270 Civ. Unpaved Yes 3000
Yalgoo YLG unknown 0
Big Bell BBE unknown 0
Cue CUY 442 Civ. Unpaved No 6400
Mount Magnet MMG 411 Civ. Unpaved Yes 5000
Gingin 73 Civ. Paved No 5900

Ports

Name LOCODE Country
Maud Landing Coral Sea Islands
Cape Cuvier Coral Sea Islands
Carnarvon AUCVQ Coral Sea Islands
Denham Coral Sea Islands
Useless Loop AUUSL Coral Sea Islands
Hamelin Pool Coral Sea Islands
Bluff Point Coral Sea Islands
Port Gregory Coral Sea Islands
Geraldton AUGET Coral Sea Islands
Dongarra Coral Sea Islands

Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

...

StormSurge

No locations affected by storm surge > 10 cm

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.