Overall Green alert Tropical Cyclone for BOLAVEN-18


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

Meteorological source GDACS (JTWC)
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 74 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)


74 km/h Current

Up to 890000 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
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

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
2 02 Jan 2018 12:00 Tropical storm 65 890000 people no people 9.8, 118.6 Philippines
2 03 Jan 2018 00:00 Tropical storm 74 no people no people 10.2, 115.1
2 03 Jan 2018 12:00 Tropical storm 65 no people no people 10.7, 112.3
2 04 Jan 2018 00:00 Tropical depression 56 no people no people 11.3, 110.5
2 05 Jan 2018 00:00 Tropical depression 37 no people no people 12.8, 107.6 Viet Nam
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.

Exposed population




Region Province Country Population
Southern Tagalog Philippines 8.2 million people

Populated places

Name Region Province Country City class Population Distance
Puerto Princesa Philippines City 150000 people 416 km

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) Distance
El Nido ENI unknown 0 392 km
Puerto Princesa International PPS 6 Civ. Paved Yes 8500 412 km
Pagasa 2 0 919 km


Name LOCODE Country Distance
Taytay Philippines 363 km
Binaluan Philippines 384 km
Babuyan Philippines 387 km
El Nido Philippines 392 km
Bacuit Philippines 395 km
Puerto Princesa PHPPS Philippines 415 km
Quezon Philippines 494 km
Eran Philippines 514 km
Punta Baja Harbor Philippines 534 km
Rio Tuba Philippines 566 km
Bono Bono Philippines 570 km


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, 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.