Overall Green alert Tropical Cyclone for JOHN-18
in Mexico

Impact

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

Meteorological source GDACS (JTWC)
Exposed countries Mexico
Exposed population Few people affected in Category 1 or higher
Maximum wind speed 204 km/h
Maximum storm surge 0.1 m (09 Aug 19:00 UTC)
Vulnerability Medium (Mexico)

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 GDACS score
GDACS Current 65 km/h 0.1 m 0.5
GDACS Overall 204 km/h 0.1 m 0.5

Wind

65 km/h Current

Up to <1000 people in Category 1 strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Green 1 05 Aug 2018 21:00 167 Few people affected Few people affected Mexico
Green 2 06 Aug 2018 03:00 176 Few people affected Few people affected Mexico
Green 3 06 Aug 2018 09:00 204 Few people affected Few people affected Mexico
Green 4 06 Aug 2018 15:00 204 Few people affected Few people affected Mexico
Green 5 06 Aug 2018 21:00 204 Few people affected Few people affected Mexico
Green 6 07 Aug 2018 03:00 194 Few people affected Few people affected Mexico
Green 7 07 Aug 2018 09:00 194 Few people affected Few people affected Mexico
Green 8 07 Aug 2018 15:00 194 Few people affected Few people affected Mexico
Green 9 07 Aug 2018 21:00 185 Few people affected Few people affected Mexico
Green 10 08 Aug 2018 03:00 167 Few people affected Few people affected Mexico
Green 11 08 Aug 2018 09:00 157 Few people affected Few people affected Mexico
Green 12 08 Aug 2018 15:00 139 Few people affected Few people affected Mexico
Green 13 08 Aug 2018 21:00 139 Few people affected Few people affected Mexico
Green 14 09 Aug 2018 03:00 130 Few people affected Few people affected Mexico
Green 15 09 Aug 2018 09:00 111 Few people affected Few people affected Mexico
Green 16 09 Aug 2018 15:00 111 Few people affected Few people affected Mexico
Green 17 09 Aug 2018 21:00 102 Few people affected Few people affected Mexico
Green 18 10 Aug 2018 03:00 93 Few people affected Few people affected Mexico
Green 19 10 Aug 2018 09:00 74 Few people affected Few people affected Mexico
Green 20 10 Aug 2018 12:00 65 Few people affected Few people affected Mexico

Bulletin Timeline

Alert Date (UTC) Category Max winds (km/h) Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon)
GREEN
1 05 Aug 2018 18:00 Tropical depression 56 no people no people 14.3, -105.5
GREEN
2 06 Aug 2018 00:00 Tropical storm 65 no people no people 14.7, -106
GREEN
3 06 Aug 2018 06:00 Tropical storm 83 no people no people 14.9, -107
GREEN
4 06 Aug 2018 12:00 Tropical storm 102 no people no people 15.3, -107.7
GREEN
5 06 Aug 2018 18:00 Tropical storm 111 no people no people 15.9, -107.9
GREEN
6 07 Aug 2018 00:00 Category 1 120 no people no people 16.4, -108.4
GREEN
7 07 Aug 2018 06:00 Category 1 139 <1000 people no people 17, -108.9
GREEN
8 07 Aug 2018 12:00 Category 2 167 <1000 people <1000 people 17.5, -109.5
GREEN
9 07 Aug 2018 18:00 Category 2 167 <1000 people <1000 people 18.3, -110.1
GREEN
10 08 Aug 2018 00:00 Category 2 167 <1000 people <1000 people 18.9, -110.8
GREEN
11 08 Aug 2018 06:00 Category 2 157 <1000 people no people 19.6, -111.2
GREEN
12 08 Aug 2018 12:00 Category 1 139 <1000 people no people 20.3, -111.9
GREEN
13 08 Aug 2018 18:00 Category 1 139 no people no people 21.5, -112.9
GREEN
14 09 Aug 2018 00:00 Category 1 130 no people no people 22.7, -113.8
GREEN
15 09 Aug 2018 06:00 Category 1 120 no people no people 23.3, -115.3
GREEN
16 09 Aug 2018 12:00 Tropical storm 111 no people no people 24.2, -116.7
GREEN
17 09 Aug 2018 18:00 Tropical storm 102 no people no people 24.5, -118
GREEN
18 10 Aug 2018 00:00 Tropical storm 93 no people no people 25.2, -119.1
GREEN
19 10 Aug 2018 06:00 Tropical storm 83 no people no people 25.6, -119.5
GREEN
20 10 Aug 2018 12:00 Tropical storm 65 no people no people 26.5, -120.7
GREEN
20 11 Aug 2018 00:00 Tropical depression 46 no people no people 27.5, -122.5
GREEN
20 11 Aug 2018 12:00 Tropical depression 46 no people no people 28.2, -123.7
GREEN
20 12 Aug 2018 00:00 Tropical depression 46 no people no people 28.5, -124.5
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country
Mexico

Provinces

Region Province Country Population
Baja California Sur Mexico 340000 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) Distance
Isla Socorro 100 0 1318 km

Ports

Name LOCODE Country Distance
Socorro Island Mexico 1314 km

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

0.1 m

The maximum Storm surge height is  0.1m in Agua del Coyote, Mexico. This height is estimated for 09 Aug 2018 19:00 UTC .

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.

Locations affected by Storm surge (1 locations). Calculation based on advisory number 20 of 10 Aug 2018 12:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
09 Aug 2018 19:00 Agua del Coyote Mexico  0.1