Overall Green alert Tropical Cyclone for BOLAVEN-18
Impact Single TC
Impact all weather systems in the area


Tropical Cyclone BOLAVEN-18 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 83 km/h
Maximum storm surge n.a.
Vulnerability --


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 65 km/h n.a. n.a. 0.5
GDACS Overall 83 km/h 0.0 m n.a. 0.5

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


65 km/h Current Max.

Up to 710000 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
Green 1 01 Jan 2018 18:00 83 12.9 million No people Philippines, Viet Nam, Cambodia
Green 2 02 Jan 2018 00:00 74 900 thousand No people Philippines
Green 3 02 Jan 2018 06:00 65 710 thousand No people Philippines

Bulletin Timeline

Alert Date (UTC) Category Max winds
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
1 01 Jan 2018 18:00 Tropical depression 56 9.9 million people no people 9.4, 124.6 Philippines
2 02 Jan 2018 00:00 Tropical depression 56 880000 people no people 9.4, 122.5 Philippines
3 02 Jan 2018 06:00 Tropical depression 56 750000 people no people 9.3, 120.7 Philippines
3 02 Jan 2018 18:00 Tropical storm 65 710000 people no people 9.7, 117 Philippines
3 03 Jan 2018 06:00 Tropical storm 65 no people no people 10.2, 113.9
3 03 Jan 2018 18:00 Tropical depression 56 no people no people 10.7, 111.6
3 04 Jan 2018 06:00 Tropical depression 46 no people no people 11.4, 109.9 Viet Nam
3 05 Jan 2018 06:00 Tropical depression 37 no people no people 12.4, 107.9 Viet Nam
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.

Exposed population - AoIs

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




Region Province Country Population
Southern Tagalog Philippines 8.2 million people

Populated places

Name Region Province Country City class Population
Puerto Princesa Philippines City 150000 people

Critical infrastructure

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


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Puerto Princesa International PPS 6 Civ. Paved Yes 8500
Pagasa 2 0


Name LOCODE Country
Puerto Princesa PHPPS Philippines
Quezon Philippines
Eran Philippines
Punta Baja Harbor Philippines
Rio Tuba Philippines
Bono Bono Philippines
Balabac Philippines


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.



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.