Overall Green alert Tropical Cyclone for HELENE-18
in Portugal, Ireland, United Kingdom
GDACS
Impact Single TC
HWRF
ECMWF
GFS
Impact all weather systems in the area

Impact

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

Meteorological source GDACS
Exposed countries Portugal, Ireland, United Kingdom
Exposed population No people in Category 1 or higher
Maximum wind speed 185 km/h
Maximum storm surge 0.2 m (08 Sep 17:00 UTC)
Vulnerability Low (Portugal)

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
GDACS Current 167 km/h n.a. n.a. 0.5
GDACS Overall 185 km/h 0.2 m n.a. 0.5

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

Wind

167 km/h Current Max.

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Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Countries
Green 1 07 Sep 2018 15:00 111 200 thousand No people Cape Verde
Green 2 07 Sep 2018 21:00 130 350 thousand No people Cape Verde
Green 3 08 Sep 2018 03:00 120 350 thousand No people Cape Verde
Green 4 08 Sep 2018 09:00 148 350 thousand No people Cape Verde
Green 5 08 Sep 2018 15:00 148 50 thousand No people Cape Verde
Green 6 08 Sep 2018 21:00 157 40 thousand No people Cape Verde
Green 7 09 Sep 2018 03:00 167 No people No people

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 07 Sep 2018 15:00 Tropical depression 56 no people no people 13.1, -17.8
GREEN
2 07 Sep 2018 21:00 Tropical depression 56 no people no people 13.2, -18.6
GREEN
3 08 Sep 2018 03:00 Tropical storm 65 no people no people 13.6, -18.5
GREEN
4 08 Sep 2018 09:00 Tropical storm 74 no people no people 13.7, -19.6
GREEN
5 08 Sep 2018 15:00 Tropical storm 74 no people no people 13.4, -20.6
GREEN
6 08 Sep 2018 21:00 Tropical storm 93 no people no people 13.6, -21.7
GREEN
7 09 Sep 2018 03:00 Tropical storm 93 no people no people 13.2, -22.8
GREEN
7 09 Sep 2018 12:00 Tropical storm 111 no people no people 13.3, -24.7
GREEN
7 10 Sep 2018 00:00 Category 1 130 no people no people 13.8, -27.4
GREEN
7 10 Sep 2018 12:00 Category 1 148 no people no people 14.5, -30.2
GREEN
7 11 Sep 2018 00:00 Category 2 167 no people no people 15.3, -33
GREEN
7 12 Sep 2018 00:00 Category 2 157 no people no people 17.1, -37.4
GREEN
7 13 Sep 2018 00:00 Category 1 120 no people no people 19.5, -40.5
GREEN
7 14 Sep 2018 00:00 Tropical storm 93 no people no people 22.5, -42.5
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

Critical infrastructure

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

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.

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StormSurge

0.2 m

The maximum Storm surge height is  1.1m in Llansamlet, United Kingdom. This height is estimated for 18 Sep 2018 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 (3936 locations). Calculation based on advisory number 37 of 16 Sep 2018 15:00:00 UTC. (Simulation using 0.5 minute resolution)

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