Overall Green alert Tropical Cyclone for LESLIE-18
in Portugal
alertimage

Orange alert for storm surge impact based on HWRF source

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.

This report is for advisory number 63 of tropical cyclone LESLIE-18 issued at 12 Oct 2018 3:00:00 (GDACS Event ID 1000510). However, the calculation for advisory number is not completed. Therefore, the latest available calculation is shown. All links, data, statistics and maps refer to the latest available calculation.

Summary

Population affected by cyclone-strength winds (>120km/h):No people affected
Saffir-Simpson Category: Category 1
Maximum sustained wind speed: 132 Km/h
Maximum Storm surge height is:  1.8m in Dominion, Canada.

Storm surge

View animation and affected locations in an interactive map: open

Storm surge maximum height
Storm surge maximum height (Source: JRC)
Max windspeed
Max windspeed (Source: HWRF)

Evolution

Legend
people affected <=10000
people affected >10000 and <100000
people affected >100000


Calculation Alert color Date (UTC) Wind speed Population affected
winds(>120km/h)
TS CAT. 1 CAT. 2 CAT. 3 CAT. 4 CAT. 5 Countries
1
GREEN
20180923.12 132 km/h (82 mph) No people affected
2
GREEN
20180923.18 142 km/h (88 mph) No people affected
3
GREEN
20180924.00 153 km/h (95 mph) No people affected
4
GREEN
20180924.06 155 km/h (96 mph) No people affected
5
GREEN
20180924.12 141 km/h (87 mph) No people affected
6
GREEN
20180924.18 152 km/h (94 mph) No people affected
7
GREEN
20180925.00 148 km/h (92 mph) No people affected
8
GREEN
20180925.06 125 km/h (77 mph) No people affected
9
GREEN
20180925.12 131 km/h (81 mph) No people affected
10
GREEN
20180928.06 98 km/h (61 mph) No people
11
GREEN
20180928.12 106 km/h (66 mph) No people
12
GREEN
20180928.18 106 km/h (66 mph) No people
13
GREEN
20180929.00 98 km/h (61 mph) No people
14
GREEN
20180929.06 97 km/h (60 mph) No people
15
GREEN
20180929.12 111 km/h (69 mph) No people
16
GREEN
20180929.18 115 km/h (71 mph) No people
17
GREEN
20180930.00 126 km/h (78 mph) No people affected
18
GREEN
20180930.06 121 km/h (75 mph) No people affected
19
GREEN
20180930.12 127 km/h (79 mph) No people affected
20
GREEN
20180930.18 139 km/h (86 mph) No people affected
21
GREEN
20181001.00 126 km/h (78 mph) No people affected
22
GREEN
20181001.06 125 km/h (78 mph) No people affected
23
GREEN
20181001.12 124 km/h (77 mph) No people affected
24
GREEN
20181001.18 139 km/h (86 mph) No people affected
Canada
25
GREEN
20181002.00 131 km/h (81 mph) No people affected
26
GREEN
20181002.06 133 km/h (82 mph) No people affected
27
GREEN
20181002.12 129 km/h (80 mph) No people affected
28
GREEN
20181002.18 130 km/h (80 mph) No people affected
29
GREEN
20181003.00 128 km/h (79 mph) No people affected
30
GREEN
20181003.06 132 km/h (82 mph) No people affected

Affected locations

Date Name Country Alert Storm surge height (m)
30 Sep 2018 21:30:00 Dominion Canada  1.8m
30 Sep 2018 21:30:00 Glace Bay Canada  1.8m
30 Sep 2018 21:30:00 Homeville Canada  1.8m
30 Sep 2018 21:30:00 Port Morien Canada  1.8m
30 Sep 2018 21:30:00 Donkin Canada  1.8m
02 Oct 2018 03:00:00 Louisbourg Canada  1.5m
02 Oct 2018 03:00:00 Main-a-Dieu Canada  1.5m
02 Oct 2018 00:30:00 New Waterford Canada  1.5m
29 Sep 2018 09:45:00 Arichat Canada  0.9m
29 Sep 2018 09:45:00 D'Escousse Canada  0.9m
29 Sep 2018 09:45:00 Petit-de-Grat Canada  0.9m
29 Sep 2018 09:45:00 Saint Peters Canada  0.9m
29 Sep 2018 09:30:00 Gabarus Canada  0.6m
29 Sep 2018 09:30:00 Mira Canada  0.6m
Locations affected by Storm surge (15 of 20)
Calculation based on advisory number of 03 Oct 2018 06:00.
(Simulation using minute resolution)

See full locations list (RSS)

More information

The atmospheric forcing included in the storm surge model are the pressure drop and the wind-water friction. The effects of the short waves induced by the wind (wave setup) and the precipitations are not yet implemented in the model.

  • Interactive map: open

For a full list of available products related to this event, please refer to the GDACS Resources page.