Overall Green alert Tropical Cyclone for BOLAVEN-23
in Northern Mariana Islands, Guam

Event summary

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

GDACS ID TC 1001020
From - To 07 Oct - 14 Oct
Exposed countries Northern Mariana Islands, Guam
Exposed population No people in Category 1 or higher
Maximum wind speed 287 km/h Category 5
Maximum storm surge 0.3 m (10 Oct 06:00 UTC)
Vulnerability Medium (Guam)


For more info on GDACS alert score click here.
Wind Storm surge Rainfall GDACS score
GDACS JTWC 148 km/h 0.3 m n.a. 0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF 277 km/h n.a. 381 mm 0.5
GFS 223 km/h n.a. 701 mm 2.5
ECMWF 130 km/h 3.3 m 713 mm 0.5
Maximum expected impact (wind, storm surge and rainfall) using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Detailed event map. European Union, 2023. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

Articles: 212 | About casualties: 1 | Last hour: 0

Meet NWS's 'Typhoon Twins' who help keep Guam safe and informed during ... 2023-10-17T15:29+0200.

Brandon and Landon Aydlett, twin brothers from North Carolina, have spent the past several years in Guam where the two are mainstays of the social media messaging and a critical lifeline the the U.S. territory when the tropics get active, s
Shell soon to open station on backroad to Andersen2023-10-16T23:27+0200.

Shell Guam plans to open within the next few weeks a gas station along Route 15, commonly known as the backroad to Andersen Air Force Base. Motorists traveling along Route 15 in recent months will have noticed the small station along their
No FEMA aid for people with post-Bolaven damage2023-10-16T15:46+0200.

Typhoon Bolaven prompted weather officials to issue flood advisories for the island, but according to the governor's office, residents who may have experienced flood damage will not be receiving any federal help. Ahead of Typhoon Bolaven’s
Up Next Tropical Storm “Tammy”2023-10-16T13:20+0200.

Working our way through the alphabet, the next tropical storm that forms in the Atlantic/Caribbean/Gulf of Mexico will be called “Tammy” and that storm is starting to form now in the Central Atlantic. We just had tropical storm Sean, barel

Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (40), (2), INFORM (2),