Overall Red alert Tropical Cyclone for MAWAR-23
in Northern Mariana Islands, Guam, Philippines, Japan, China

Impact

Tropical Cyclone MAWAR-23 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS
Exposed countries Northern Mariana Islands, Guam, Philippines, Japan, China
Exposed population 170 thousand in Category 1 or higher
Maximum wind speed 296 km/h
Maximum storm surge 0.2 m (24 May 00:00 UTC)
Vulnerability Medium (Guam)

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
Current 167 km/h 0.2 m n.a. 1.5
Overall 296 km/h 0.2 m n.a. 1.5

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

Wind

167 km/h Current Max.

Up to 55000 people in Category 1 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
Orange 1 20 May 2023 00:00 167 230 thousand 50 thousand Northern Mariana Islands

Bulletin Timeline

Alert Date (UTC) Category
(SSHS)
Max winds
(km/h)
Population in
Cat.1 or higher
Population in
Tropical Storm
or higher
Location (lat, lon) Countries
GREEN
1 20 May 2023 00:00 Tropical depression 46 no people 2400 people 5.4, 149.1
GREEN
1 20 May 2023 12:00 Tropical storm 65 no people 4900 people 6.3, 148.9
GREEN
1 21 May 2023 00:00 Tropical storm 93 no people 4900 people 7.2, 148.4
GREEN
1 21 May 2023 12:00 Tropical storm 111 no people <1000 people 8.5, 147.8
GREEN
1 22 May 2023 00:00 Category 1 139 no people 170000 people 9.8, 147.3
ORANGE
1 23 May 2023 00:00 Category 2 157 55000 people 220000 people 12.5, 146.6
ORANGE
1 24 May 2023 00:00 Category 2 167 52000 people 220000 people 14.9, 145.2
GREEN
1 25 May 2023 00:00 Category 2 176 no people no people 16.9, 143.2
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 Population in Category 1 or higher strength
Northern Mariana Is. 46000 people

Provinces

Region Province Country Population in Category 1 or higher strength
Northern Mariana Is. Northern Mariana Islands 46000 people

Populated places

Name Region Province Country City class Population
Saipan Northern Mariana Islands Capital 62000 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)
Rota I International ROP 185 Civ. Paved Yes 6000
Dynasty 46 0
West Tinian TIQ 82 Civ. Paved Yes 5900
Saipan International SPN 66 Civ. Paved Yes 8700
Commonwealth Health Center 5 0
Nikko 18 0

Ports

Name LOCODE Country
Rota Northern Mariana Islands
Tinian Northern Mariana Islands
Saipan MPSPN Northern Mariana 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

0.2 m

The maximum Storm surge height is  0.2m in Sunharon Roads, Northern Mariana Islands. This height is estimated for 24 May 2023 00:00 UTC .

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 (41 locations). Calculation based on advisory number 1 of 20 May 2023 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
24 May 2023 00:00 Sunharon Roads Northern Mariana Islands  0.2
24 May 2023 00:00 Chalan Kanoa Northern Mariana Islands  0.2
24 May 2023 00:00 Aslito Northern Mariana Islands  0.2
23 May 2023 19:00 Songsong Northern Mariana Islands  0.2
24 May 2023 00:00 Afetna Northern Mariana Islands  0.2
24 May 2023 00:00 Susupi Northern Mariana Islands  0.2
24 May 2023 00:00 Laolao Northern Mariana Islands  0.2
24 May 2023 00:00 Saipan Northern Mariana Islands  0.2
23 May 2023 21:00 Teteto Northern Mariana Islands  0.2
23 May 2023 21:00 Sinapalo Northern Mariana Islands  0.2
23 May 2023 21:00 Rota Northern Mariana Islands  0.1
24 May 2023 00:00 Tanapag Northern Mariana Islands  0.1
24 May 2023 00:00 Kagman Northern Mariana Islands  0.1
24 May 2023 00:00 Garapan Northern Mariana Islands  0.1
24 May 2023 00:00 Mutcho Northern Mariana Islands  0.1
24 May 2023 00:00 San Roque Northern Mariana Islands  0.1
23 May 2023 12:00 Asan Guam  0.1
23 May 2023 12:00 Hagatna Guam  0.1
23 May 2023 12:00 Sinajana Guam  0.1
23 May 2023 12:00 Mongmong Guam  0.1
23 May 2023 12:00 Yona Guam  0.1
23 May 2023 12:00 Tamuning Guam  0.1
23 May 2023 12:00 Barrigada Guam  0.1
23 May 2023 12:00 Camp Quezon Guam  0.1
23 May 2023 12:00 Harmon Village Guam  0.1
23 May 2023 12:00 Oceanview Guam  0.1
23 May 2023 12:00 Dededo Guam  0.1
23 May 2023 12:00 South Acres Guam  0.1
23 May 2023 12:00 Asbeco Guam  0.1
23 May 2023 12:00 Adacao Guam  0.1
23 May 2023 12:00 Ipapao Guam  0.1
23 May 2023 12:00 Potts Junction Guam  0.1
23 May 2023 12:00 Perez Acres Guam  0.1
23 May 2023 12:00 Gayinero Guam  0.1
23 May 2023 12:00 Spring Hill Subdivision Guam  0.1
23 May 2023 12:00 Upi Guam  0.1
23 May 2023 12:00 Asatdas Guam  0.1
23 May 2023 12:00 Lupog Guam  0.1
23 May 2023 17:00 Lockwood Terrace Guam  0.1
23 May 2023 17:00 Camp Bright Guam  0.1
23 May 2023 17:00 Piti Guam  0.1