Overall Green alert Tropical Cyclone for FLORENCE-18
in United States
alertimage

Orange alert for storm surge impact based on GFS 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 62 of tropical cyclone FLORENCE-18 issued at 14 Sep 2018 21:00:00 (GDACS Event ID 1000495). 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
Saffir-Simpson Category: Tropical storm
Maximum sustained wind speed: 77 Km/h
Maximum Storm surge height is:  1.3m in Willis Landing, United States.

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: GFS)

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
20180909.00 123 km/h (76 mph) No people affected
2
GREEN
20180909.06 62 km/h (38 mph) No people
Cape Verde
3
GREEN
20180909.12 135 km/h (84 mph) No people affected
4
GREEN
20180909.18 137 km/h (85 mph) No people affected
5
GREEN
20180910.00 140 km/h (87 mph) No people affected
6
GREEN
20180910.06 184 km/h (114 mph) No people affected
7
GREEN
20180910.12 187 km/h (116 mph) No people affected
8
GREEN
20180910.18 69 km/h (43 mph) No people
United States, Dominica
9
GREEN
20180911.00 112 km/h (69 mph) No people
United States
10
GREEN
20180911.06 168 km/h (104 mph) 9 thousand
United States, Guadeloupe (France), Dominica
11
GREEN
20180911.12 97 km/h (60 mph) No people
United States, Guadeloupe (France), Dominica
12
GREEN
20180911.18 107 km/h (66 mph) No people
United States, Guadeloupe (France), Dominica
13
GREEN
20180912.00 123 km/h (76 mph) Few people affected
United States, Antigua and Barbuda, Montserrat, Guadeloupe (France)
14
GREEN
20180912.06 124 km/h (77 mph) Few people affected
United States, Antigua and Barbuda, Montserrat, Guadeloupe (France)
15
GREEN
20180912.12 124 km/h (77 mph) Few people affected
United States, Montserrat, Guadeloupe (France), Dominica
16
ORANGE
20180912.18 128 km/h (79 mph) 4 thousand
United States, Antigua and Barbuda, Montserrat, Guadeloupe (France), Portugal, United States
17
GREEN
20180913.00 126 km/h (78 mph) Few people affected
Portugal, United States, Montserrat
18
GREEN
20180913.06 121 km/h (75 mph) 2 thousand
Portugal, United States
19
GREEN
20180913.12 121 km/h (75 mph) Few people affected
Portugal, United States
20
GREEN
20180913.18 113 km/h (70 mph) No people
Portugal, United States
21
GREEN
20180914.00 123 km/h (76 mph) Few people affected
Portugal, United States
22
GREEN
20180914.06 99 km/h (62 mph) No people
Portugal, United States
23
GREEN
20180914.12 96 km/h (59 mph) No people
Portugal, United States
24
GREEN
20180914.18 112 km/h (69 mph) No people
Portugal, United States
25
GREEN
20180915.00 122 km/h (75 mph) Few people affected
Portugal, United States
26
GREEN
20180915.06 93 km/h (58 mph) No people
Portugal
27
GREEN
20180915.12 86 km/h (53 mph) No people
Portugal
28
GREEN
20180915.18 85 km/h (53 mph) No people
Portugal
29
GREEN
20180916.00 77 km/h (48 mph) No people
Portugal

Affected locations

Date Name Country Alert Storm surge height (m)
14 Sep 2018 07:45:00 Willis Landing United States  1.3m
14 Sep 2018 07:45:00 Bear Creek United States  1.3m
14 Sep 2018 07:45:00 Swansboro United States  1.3m
14 Sep 2018 07:45:00 Bucks Corner United States  1.3m
14 Sep 2018 07:45:00 Cedar Point United States  1.3m
14 Sep 2018 07:45:00 Cape Carteret United States  1.3m
14 Sep 2018 07:45:00 Bogue United States  1.3m
14 Sep 2018 07:45:00 Emerald Isle United States  1.3m
14 Sep 2018 07:45:00 Ocean United States  1.3m
14 Sep 2018 07:45:00 Indian Beach United States  1.3m
14 Sep 2018 07:45:00 Broad Creek United States  1.3m
14 Sep 2018 07:45:00 Salter Path United States  1.3m
14 Sep 2018 07:45:00 Wildwood United States  1.3m
14 Sep 2018 07:45:00 Duck Creek United States  1.3m
Locations affected by Storm surge (15 of 3403)
Calculation based on advisory number of 16 Sep 2018 00:00.
(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.