Overall Green alert Tropical Cyclone for OMAIS-21
in Japan, Marshall Islands

Impact

Tropical Cyclone OMAIS-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS
Exposed countries Japan, Marshall Islands
Exposed population No people in Category 1 or higher
Maximum wind speed 93 km/h
Maximum storm surge
Vulnerability High (Marshall Is.)
Landfall between
23 Aug 2021 06:00 - 23 Aug 2021 18:00

in Republic of Korea

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 46 km/h 0.0 m n.a. 0.5
GDACS Overall 93 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

46 km/h Current Max.

Up to 54000 people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Countries
Green 1 10 Aug 2021 12:00 65 No people No people
Green 2 10 Aug 2021 18:00 65 No people No people
Green 3 11 Aug 2021 00:00 65 No people No people
Green 4 11 Aug 2021 06:00 65 No people No people
Green 5 11 Aug 2021 12:00 56 No people No people
Green 6 11 Aug 2021 18:00 56 No people No people
Green 7 12 Aug 2021 00:00 56 No people No people
Green 8 12 Aug 2021 06:00 56 No people No people
Green 9 12 Aug 2021 12:00 74 No people No people
Green 10 12 Aug 2021 18:00 74 4 thousand No people Guam
Green 11 13 Aug 2021 00:00 83 160 thousand No people Guam
Green 12 13 Aug 2021 06:00 111 170 thousand No people Guam
Green 13 13 Aug 2021 12:00 120 170 thousand No people Guam
Green 14 13 Aug 2021 18:00 120 170 thousand No people Guam
Green 15 14 Aug 2021 00:00 130 160 thousand No people Guam
Green 16 14 Aug 2021 06:00 139 170 thousand No people Marshall Islands, Guam
Green 17 14 Aug 2021 12:00 139 170 thousand No people Marshall Islands, Guam
Green 18 14 Aug 2021 18:00 139 170 thousand No people Marshall Islands, Guam
Green 19 15 Aug 2021 00:00 139 160 thousand No people Marshall Islands, Guam
Green 20 15 Aug 2021 06:00 148 160 thousand No people Marshall Islands, Guam
Green 21 15 Aug 2021 12:00 139 Few people No people Marshall Islands
Green 22 15 Aug 2021 18:00 139 Few people No people Marshall Islands
Green 23 16 Aug 2021 00:00 139 Few people No people Marshall Islands
Green 24 16 Aug 2021 06:00 139 Few people No people Marshall Islands
Green 25 16 Aug 2021 12:00 139 Few people No people Marshall Islands
Green 26 16 Aug 2021 18:00 139 Few people No people Marshall Islands
Green 27 17 Aug 2021 00:00 130 Few people No people Marshall Islands
Green 28 17 Aug 2021 06:00 37 Few people No people Marshall Islands
Green 29 19 Aug 2021 12:00 74 10 thousand No people Japan, Marshall Islands
Green 30 19 Aug 2021 18:00 83 1.3 million No people Japan, Marshall Islands
Green 31 20 Aug 2021 00:00 83 430 thousand No people Japan, Marshall Islands
Green 32 20 Aug 2021 06:00 74 60 thousand No people Japan, Marshall Islands
Green 33 20 Aug 2021 12:00 74 110 thousand No people Japan, Marshall Islands
Green 34 20 Aug 2021 18:00 74 170 thousand No people Japan, Republic of Korea, Marshall Islands
Green 35 21 Aug 2021 00:00 93 11.7 million No people Japan, Republic of Korea, Marshall Islands
Green 36 21 Aug 2021 06:00 93 23.1 million No people Japan, Republic of Korea, Marshall Islands
Green 37 21 Aug 2021 12:00 102 25.8 million No people Japan, Republic of Korea, Marshall Islands
Green 38 21 Aug 2021 18:00 102 23.4 million No people Japan, Republic of Korea, Russian Federation, Marshall Islands
Green 39 22 Aug 2021 00:00 83 670 thousand No people Japan, Republic of Korea, Marshall Islands
Green 40 22 Aug 2021 06:00 65 50 thousand No people Japan, Marshall Islands
Green 41 22 Aug 2021 12:00 65 50 thousand No people Japan, Marshall Islands
Green 42 22 Aug 2021 18:00 65 50 thousand No people Japan, Marshall Islands
Green 43 23 Aug 2021 00:00 56 50 thousand No people Japan, Marshall Islands
Green 44 23 Aug 2021 06:00 46 50 thousand No people Japan, Marshall Islands

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
1 10 Aug 2021 12:00 Tropical depression 46 no people no people 12.2, 179
GREEN
2 10 Aug 2021 18:00 Tropical depression 56 no people no people 12.3, 178
GREEN
3 11 Aug 2021 00:00 Tropical depression 56 no people no people 12.3, 177.2
GREEN
4 11 Aug 2021 06:00 Tropical depression 56 no people no people 12.4, 176.6
GREEN
5 11 Aug 2021 12:00 Tropical depression 56 no people no people 12.1, 175.9
GREEN
6 11 Aug 2021 18:00 Tropical depression 56 no people no people 12.1, 175
GREEN
7 12 Aug 2021 00:00 Tropical depression 46 no people no people 12.1, 174
GREEN
8 12 Aug 2021 06:00 Tropical depression 46 no people no people 12.8, 172.7
GREEN
9 12 Aug 2021 12:00 Tropical depression 56 no people no people 12.6, 171.3
GREEN
10 12 Aug 2021 18:00 Tropical depression 56 no people no people 12.6, 169.9
GREEN
11 13 Aug 2021 00:00 Tropical storm 65 no people no people 12.7, 168.6
GREEN
12 13 Aug 2021 06:00 Tropical storm 65 no people no people 12.8, 167
GREEN
13 13 Aug 2021 12:00 Tropical storm 65 no people no people 12.8, 166.2
GREEN
14 13 Aug 2021 18:00 Tropical depression 56 no people no people 12.5, 164.9
GREEN
15 14 Aug 2021 00:00 Tropical depression 56 no people no people 12.5, 163.2
GREEN
16 14 Aug 2021 06:00 Tropical storm 65 <1000 people no people 12.3, 161.7
GREEN
17 14 Aug 2021 12:00 Tropical storm 65 no people no people 12.3, 160.3
GREEN
18 14 Aug 2021 18:00 Tropical storm 65 no people no people 12.3, 159
GREEN
19 15 Aug 2021 00:00 Tropical depression 56 no people no people 12.5, 157
GREEN
20 15 Aug 2021 06:00 Tropical depression 56 no people no people 12.7, 154.7
GREEN
21 15 Aug 2021 12:00 Tropical depression 46 no people no people 12.8, 154.4
GREEN
22 15 Aug 2021 18:00 Tropical depression 46 no people no people 12.9, 152.9
GREEN
23 16 Aug 2021 00:00 Tropical depression 46 no people no people 13.1, 151.3
GREEN
24 16 Aug 2021 06:00 Tropical depression 37 no people no people 13.6, 149.8
GREEN
25 16 Aug 2021 12:00 Tropical depression 37 no people no people 13.5, 148.2
GREEN
26 16 Aug 2021 18:00 Tropical depression 37 no people no people 12.9, 146.3
GREEN
27 17 Aug 2021 00:00 Tropical depression 37 no people no people 13.3, 145.1
GREEN
28 17 Aug 2021 06:00 Tropical depression 37 no people no people 13.4, 143.9
GREEN
29 19 Aug 2021 12:00 Tropical depression 46 no people no people 18.4, 132.9
GREEN
30 19 Aug 2021 18:00 Tropical depression 56 no people no people 18.5, 132.2
GREEN
31 20 Aug 2021 00:00 Tropical depression 56 no people no people 19, 130.9
GREEN
32 20 Aug 2021 06:00 Tropical depression 56 no people no people 19.1, 130.1
GREEN
33 20 Aug 2021 12:00 Tropical depression 56 no people no people 19.2, 129.5
GREEN
34 20 Aug 2021 18:00 Tropical storm 65 no people no people 20, 129.1
GREEN
35 21 Aug 2021 00:00 Tropical storm 83 no people no people 21.4, 128.2
GREEN
36 21 Aug 2021 06:00 Tropical storm 83 45000 people no people 22, 127.7
GREEN
37 21 Aug 2021 12:00 Tropical storm 93 52000 people no people 22.7, 127.1
GREEN
38 21 Aug 2021 18:00 Tropical storm 93 52000 people no people 23.5, 126.6
GREEN
39 22 Aug 2021 00:00 Tropical storm 83 63000 people no people 24.3, 125.8
GREEN
40 22 Aug 2021 06:00 Tropical storm 65 51000 people no people 25.1, 125.3
GREEN
41 22 Aug 2021 12:00 Tropical storm 65 no people no people 26, 125.1
GREEN
42 22 Aug 2021 18:00 Tropical storm 65 no people no people 27.2, 124.9
GREEN
43 23 Aug 2021 00:00 Tropical depression 56 no people no people 28.9, 125.5
GREEN
44 23 Aug 2021 06:00 Tropical depression 46 no people no people 31.3, 125.6
GREEN
44 23 Aug 2021 18:00 Tropical depression 37 no people no people 35.8, 128.4 Republic of Korea
GREEN
44 24 Aug 2021 06:00 Tropical depression 37 no people no people 40.2, 132.1
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.
Download:



Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country
Japan
Marshall Is.

Provinces

Region Province Country Population
Okinawa Japan 1.2 million people
Marshall Is. Marshall Islands -

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)
Shimojishima SHI 16 Civ. Paved Yes 9800
Hirara MMY 45 Civ. Paved Yes 6500
9 0
Enewetak Aux Af ENT 4 Mil. Paved No 7700

Ports

Name LOCODE Country
Hirara Japan
Myako Island Japan
Eniwetok Marshall 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. 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.

Locations affected by Storm surge (0 locations). Calculation based on advisory number 9 of 12 Aug 2021 12:00:00 UTC. (Simulation using 6 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)