Overall Green alert Tropical Cyclone for LEE-23
in Canada, United States

Impact

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

Meteorological source GDACS
Exposed countries Canada, United States
Exposed population 1.1 million in Category 1 or higher
Maximum wind speed 269 km/h
Maximum storm surge 0.1 m (06 Sep 13:00 UTC)
Vulnerability Low (Canada)
Landfall between
16 Sep 2023 12:00 - 17 Sep 2023 00:00

in Canada

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
Current 139 km/h 1.8 m n.a. 0.5
Overall 269 km/h 0.1 m n.a. 0.5

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

Wind

139 km/h Current Max.

Up to 230000 people in Category 1 strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Countries
Green 1 05 Sep 2023 15:00 222 Few people No people Antigua and Barbuda, Anguilla
Green 2 05 Sep 2023 21:00 231 No people No people
Green 3 06 Sep 2023 03:00 241 No people No people
Green 4 06 Sep 2023 09:00 241 No people No people
Green 5 06 Sep 2023 15:00 241 No people No people
Green 6 06 Sep 2023 21:00 241 No people No people
Green 7 07 Sep 2023 03:00 250 No people No people
Green 8 07 Sep 2023 09:00 250 No people No people
Green 9 07 Sep 2023 15:00 259 No people No people
Green 10 07 Sep 2023 21:00 269 No people No people
Green 11 08 Sep 2023 03:00 287 No people No people
Green 12 08 Sep 2023 09:00 287 No people No people
Green 13 08 Sep 2023 15:00 250 No people No people
Green 14 08 Sep 2023 21:00 241 No people No people
Green 15 09 Sep 2023 03:00 222 No people No people
Green 16 09 Sep 2023 09:00 222 No people No people
Green 17 09 Sep 2023 15:00 222 No people No people
Green 18 09 Sep 2023 21:00 222 No people No people
Green 19 10 Sep 2023 03:00 222 No people No people
Green 20 10 Sep 2023 09:00 213 No people No people
Green 21 10 Sep 2023 15:00 213 No people No people
Green 22 10 Sep 2023 21:00 222 60 thousand No people Bermuda
Green 23 11 Sep 2023 03:00 222 60 thousand No people Bermuda
Green 24 11 Sep 2023 09:00 213 60 thousand No people Bermuda
Green 25 11 Sep 2023 15:00 213 60 thousand No people Bermuda
Green 26 11 Sep 2023 21:00 194 220 thousand No people Bermuda, United States
Green 27 12 Sep 2023 03:00 194 1.3 million 20 thousand Canada
Green 28 12 Sep 2023 09:00 185 1.9 million 70 thousand Canada
Green 29 12 Sep 2023 15:00 185 2.3 million 210 thousand Canada
Green 30 12 Sep 2023 21:00 185 11 million 610 thousand Canada
Green 31 13 Sep 2023 03:00 185 10.5 million 60 thousand United States, Canada
Green 32 13 Sep 2023 09:00 185 14.6 million 70 thousand United States, Canada
Green 33 13 Sep 2023 15:00 185 13.2 million 370 thousand United States, Canada
Green 34 13 Sep 2023 21:00 167 12.5 million 690 thousand Canada
Green 35 14 Sep 2023 03:00 167 12.8 million 60 thousand United States, Canada
Green 36 14 Sep 2023 09:00 157 11.9 million No people Bermuda, United States, Canada
Green 37 14 Sep 2023 15:00 148 11.9 million 60 thousand Canada
Green 38 14 Sep 2023 21:00 139 13.1 million 50 thousand Canada
Green 39 15 Sep 2023 03:00 139 13.1 million 230 thousand United States, Canada

Bulletin Timeline

Alert Date (UTC) Category
(SSHS)
Max winds
(km/h)
Population in
Cat.1 or higher
Population in
Tropical Storm
or higher
Location (lat, lon) Countries
GREEN
1 05 Sep 2023 15:00 Tropical depression 56 no people no people 12.5, -40.2
GREEN
2 05 Sep 2023 21:00 Tropical storm 74 no people no people 13.2, -41.8
GREEN
3 06 Sep 2023 03:00 Tropical storm 83 no people no people 13.5, -43
GREEN
4 06 Sep 2023 09:00 Tropical storm 102 no people no people 13.7, -44.6
GREEN
5 06 Sep 2023 15:00 Tropical storm 111 no people no people 14.1, -45.5
GREEN
6 06 Sep 2023 21:00 Category 1 120 no people no people 14.9, -46.4
GREEN
7 07 Sep 2023 03:00 Category 1 130 no people no people 15.4, -47.7
GREEN
8 07 Sep 2023 09:00 Category 1 130 no people no people 16.1, -48.6
GREEN
9 07 Sep 2023 15:00 Category 2 167 no people no people 16.4, -50
GREEN
10 07 Sep 2023 21:00 Category 4 213 no people no people 16.9, -51.3
GREEN
11 08 Sep 2023 03:00 Category 5 259 no people no people 17.3, -52.4
GREEN
12 08 Sep 2023 09:00 Category 5 269 no people no people 17.8, -53.5
GREEN
13 08 Sep 2023 15:00 Category 4 250 no people no people 18.2, -54.5
GREEN
14 08 Sep 2023 21:00 Category 4 241 no people no people 18.9, -55.5
GREEN
15 09 Sep 2023 03:00 Category 3 185 no people no people 19.3, -56.5
GREEN
16 09 Sep 2023 09:00 Category 3 185 no people no people 19.7, -57.4
GREEN
17 09 Sep 2023 15:00 Category 3 185 no people no people 20.3, -58.2
GREEN
18 09 Sep 2023 21:00 Category 3 185 no people no people 20.7, -59.1
GREEN
19 10 Sep 2023 03:00 Category 2 167 no people no people 21, -59.9
GREEN
20 10 Sep 2023 09:00 Category 2 167 no people no people 21.4, -60.5
GREEN
21 10 Sep 2023 15:00 Category 2 176 no people no people 21.6, -61
GREEN
22 10 Sep 2023 21:00 Category 3 194 no people no people 22.1, -61.7
GREEN
23 11 Sep 2023 03:00 Category 3 194 no people no people 22.6, -62.2
GREEN
24 11 Sep 2023 09:00 Category 3 194 no people no people 23.1, -62.6
GREEN
25 11 Sep 2023 15:00 Category 3 194 no people no people 23.5, -63.5
GREEN
26 11 Sep 2023 21:00 Category 3 185 no people no people 23.6, -64.2
GREEN
27 12 Sep 2023 03:00 Category 3 185 no people no people 23.9, -64.8
GREEN
28 12 Sep 2023 09:00 Category 3 185 no people no people 24, -65.4
GREEN
29 12 Sep 2023 15:00 Category 3 185 no people no people 24.3, -65.9
GREEN
30 12 Sep 2023 21:00 Category 3 185 no people no people 24.7, -66.4
GREEN
31 13 Sep 2023 03:00 Category 3 185 no people no people 25.3, -66.7
GREEN
32 13 Sep 2023 09:00 Category 3 185 no people no people 25.7, -67.1
GREEN
33 13 Sep 2023 15:00 Category 3 185 no people no people 26.4, -67.2
GREEN
34 13 Sep 2023 21:00 Category 2 167 no people no people 27.4, -67.6
GREEN
35 14 Sep 2023 03:00 Category 2 167 no people 50000 people 28, -67.7
GREEN
36 14 Sep 2023 09:00 Category 2 157 no people 62000 people 29.1, -68.1
GREEN
37 14 Sep 2023 15:00 Category 1 148 no people 62000 people 30.4, -68.3
GREEN
38 14 Sep 2023 21:00 Category 1 139 no people 62000 people 31.7, -68.3
GREEN
39 15 Sep 2023 03:00 Category 1 139 no people 62000 people 32.9, -67.6
GREEN
39 15 Sep 2023 12:00 Category 1 139 no people 270000 people 35, -67.3
GREEN
39 16 Sep 2023 00:00 Category 1 139 no people 11.6 million people 38.4, -66.6
GREEN
39 16 Sep 2023 12:00 Category 1 120 230000 people 12.7 million people 41.6, -66.6
GREEN
39 17 Sep 2023 00:00 Tropical storm 111 no people 7.3 million people 44.3, -66 Canada
GREEN
39 17 Sep 2023 12:00 Tropical storm 83 no people 2.1 million people 47, -63.6
GREEN
39 18 Sep 2023 00:00 Tropical storm 74 no people 120000 people 49.6, -59.1
GREEN
39 19 Sep 2023 00:00 Tropical storm 65 no people no people 54.5, -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

Countries

Country Population in Category 1 or higher strength
United States 5200 people
Canada 180000 people

Provinces

Region Province Country Population in Category 1 or higher strength
Maine United States 5200 people
Nova Scotia Canada 100000 people
New Brunswick Canada 78000 people

Populated places

Name Region Province Country City class Population
Yarmouth Nova Scotia Canada City 7500 people
Saint John New Brunswick Canada Major city 86000 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)
Yarmouth YQI 43 Civ. Paved Yes 6000
Liverpool 96 Civ. Paved No 3000
Digby YDG 152 Civ. Paved No 3900
Ramsdell Field 17 0
Grand Manan 73 0
Lubec Municipal 26 0
Eastport Municipal 14 Civ. Paved Yes 4000
Morrison's 61 0
Greenwood YZX 28 Mil. Paved Yes 8000
Saint John YSJ 109 Civ. Paved Yes 7000

Ports

Name LOCODE Country
Clarks Harbour Canada
Barrington Passage Canada
Wedgeport Canada
Lockeport CALCP Canada
Yarmouth CAYQI Canada
Shelburne CASBU Canada
Meteghan CAMET Canada
Liverpool CALIV Canada
Brooklyn CABKN Canada
Port Medway CAPMW Canada
Weymouth CAWEY Canada
Seal Cove Canada
Digby CADIG Canada
North Head Canada
Annapolis Royal Canada
Eastport USEPM Wake Island
Letang Harbour Canada
Dipper Harbour West Canada
Canaport CACPT Canada
Saint John CASJB Canada

Dams

Reservoir Dam Name River Year
Rossignol Upper Lake Falls Mersey 1929
Fourth Lake Sissiboo 1960
Chase S. Mill Dam Chase Mill Stream n/a

Nuclear plants

Name Country Reactors
POINT LEPREAU CANADA 1

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 Colonia do Pescadores, Brazil. This height is estimated for 06 Sep 2023 13:00 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 (2 locations). Calculation based on advisory number 20 of 10 Sep 2023 09:00:00 UTC. (Simulation using 2 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
06 Sep 2023 13:00 Colonia do Pescadores Brazil  0.1
10 Sep 2023 23:00 The Settlement British Virgin Islands  0.1