Overall Green alert Tropical Cyclone for PETER-21
in Puerto Rico, Virgin Islands U.S., Virgin Islands British, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda

Impact

Tropical Cyclone PETER-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS
Exposed countries Puerto Rico, Virgin Islands U.S., Virgin Islands British, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Exposed population No people in Category 1 or higher
Maximum wind speed 83 km/h
Maximum storm surge
Vulnerability Medium (Anguilla)

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 83 km/h 0.0 m n.a. 0.5
Overall 83 km/h 0.0 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

83 km/h Current Max.

Up to 2 million people in Tropical Storm 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 19 Sep 2021 03:00 74 No people No people
Green 2 19 Sep 2021 09:00 74 No people No people
Green 3 19 Sep 2021 13:00 74 No people No people
Green 4 19 Sep 2021 15:00 74 30 thousand No people Antigua and Barbuda, Anguilla
Green 5 19 Sep 2021 21:00 74 No people No people
Green 6 20 Sep 2021 03:00 83 20 thousand No people Antigua and Barbuda, Anguilla
Green 7 20 Sep 2021 09:00 83 Few people No people Anguilla
Green 8 20 Sep 2021 15:00 83 Few people No people Anguilla
Green 9 20 Sep 2021 21:00 83 No people No people
Green 10 21 Sep 2021 03:00 83 220 thousand No people Anguilla, Virgin Islands British, Antigua and Barbuda, Saint Kitts and Nevis, Virgin Islands U.S.
Green 11 21 Sep 2021 09:00 83 2 million No people Virgin Islands British, Anguilla, Virgin Islands U.S., Puerto Rico, Saint Kitts and Nevis, Antigua and Barbuda

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 19 Sep 2021 03:00 Tropical depression 56 no people no people 16.4, -53.1
GREEN
2 19 Sep 2021 09:00 Tropical storm 65 no people no people 18, -53.5
GREEN
3 19 Sep 2021 13:00 Tropical storm 74 no people no people 17.6, -56
GREEN
4 19 Sep 2021 15:00 Tropical storm 74 no people no people 17.6, -56.5
GREEN
5 19 Sep 2021 21:00 Tropical storm 74 no people no people 18.4, -57.8
GREEN
6 20 Sep 2021 03:00 Tropical storm 83 no people no people 18.6, -58.5
GREEN
7 20 Sep 2021 09:00 Tropical storm 83 no people no people 19.1, -59.5
GREEN
8 20 Sep 2021 15:00 Tropical storm 83 no people <1000 people 19.5, -60.9
GREEN
9 20 Sep 2021 21:00 Tropical storm 83 no people no people 20, -61.8
GREEN
10 21 Sep 2021 03:00 Tropical storm 83 no people 220000 people 19.8, -62.8
GREEN
11 21 Sep 2021 09:00 Tropical storm 83 no people 2 million people 19.6, -63.8
GREEN
11 21 Sep 2021 18:00 Tropical storm 74 no people 370000 people 20.3, -65.3
GREEN
11 22 Sep 2021 06:00 Tropical storm 74 no people no people 21.2, -66.9
GREEN
11 22 Sep 2021 18:00 Tropical storm 65 no people no people 22.2, -67.9
GREEN
11 23 Sep 2021 06:00 Tropical storm 65 no people no people 23.2, -68.2
GREEN
11 23 Sep 2021 18:00 Tropical depression 56 no people no people 24, -68
GREEN
11 24 Sep 2021 06:00 Tropical depression 56 no people no people 25.2, -67.2
GREEN
11 25 Sep 2021 06:00 Tropical depression 56 no people no people 27.2, -65.8
GREEN
11 26 Sep 2021 06:00 Tropical depression 56 no people no people 29.2, -64.2
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
British Virgin Is.
Anguilla
Virgin Is.
Puerto Rico
St. Kitts & Nevis
Antigua & Barbuda

Provinces

Region Province Country
British Virgin Is. Virgin Islands British
Anguilla Anguilla
Virgin Is. Virgin Islands U.S.
Humacao Puerto Rico
Bayamon Puerto Rico
St. Kitts & Nevis Saint Kitts and Nevis
San Juan Puerto Rico
Guayama Puerto Rico
Arecibo Puerto Rico
Antigua & Barbuda Antigua and Barbuda

Populated places

Name Region Province Country City class Population
Road Town British Virgin Islands Capital 8300 people
The Valley Anguilla Capital 1400 people
Charlotte Amalie Virgin Islands Capital 10000 people
Philipsburg Netherlands Antilles City 6400 people
Gustavia Guadeloupe City -
Carolina Carolina Puerto Rico Major city 170000 people
San Juan San Juan Puerto Rico Capital 420000 people
Basseterre St. Kitts and Nevis Capital 13000 people
Guaynabo Guaynabo Puerto Rico City 79000 people
Bayamon Bayamon Puerto Rico City 200000 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)
Anegada NGD unknown 0
North Sound Virgin Gorda NSX unknown 0
Virgin Gorda VIJ 4 Civ. Unpaved No 3100
Beef Island EIS 5 Civ. Paved Yes 3600
St. John SJF unknown 0
Wallblake AXA 33 Civ. Paved Yes 3600
Cruz Bay unknown 0
Stouffer Grand Beach Resort 38 0
Frenchman's Reef 6 0
Grand Case CCE 2 Civ. Paved No 3900
H.S. Truman STT 5 Civ. Paved Yes 7000
Prinses Juliana SXM 4 Civ. Paved Yes 7000
Benjamin Rivera Noriega CPX 15 0
St. Barthelemy SBH unknown Civ. Paved No 2100
Christiansted Harbor- SSB unknown 0
Alexander Hamilton STX 19 Civ. Paved Yes 7600
Camp Garcia Vieques 14 0
Fajardo Harbor unknown 0
Vieques VQS 14 Civ. Paved No 3400
Diego Jimenez Torres FAJ 20 Civ. Paved No 3600
Roosevelt Roads Ns NRR 12 Mil. Paved Yes 11000
F D Roosevelt EUX 38 Civ. Paved Yes 4200
Boqueron 114 0
Luis Munoz Marin International SJU 3 Civ. Paved Yes 10000
Humacao 10 0
Prasa-Barbosa 50 0
State Government Number One 82 0
Isla Grande SIG 3 Civ. Paved Yes 5300
Prtc Office Building 53 0
Golden Rock SKB 52 Civ. Paved Yes 8000
Rexach Office Building 18 0
Bayamon Regional Hospital 34 0
Dorado 23 0
Prasa - La Plata 110 0
Barbuda Codrington BBQ unknown 0

Ports

Name LOCODE Country
Anegada Island British Virgin Islands
Virgin Gorda Island British Virgin Islands
Road Harbour & Port Purcell British Virgin Islands
Blowing Point AIBLP Anguilla
Cruz Bay Virgin Islands
Charlotte Amalie VISTT Virgin Islands
Marigot Guadeloupe
Philipsburg ANPHI Netherlands Antilles
Culebra Puerto Rico
Gustavia GPGUS Guadeloupe
Christiansted VICTD Virgin Islands
Hovic VIHOC Virgin Islands
Limetree Bay VILIB Virgin Islands
Isabel Segunda Puerto Rico
Frederiksted VIFRD Virgin Islands
Fajardo Puerto Rico
Ensenada Honda Puerto Rico
Oranjestad Netherlands Antilles
Naguabo Puerto Rico
Puerto de Humacao Puerto Rico
Yabucoa PRPYA Puerto Rico
San Juan PRSJU Puerto Rico
Basseterre KNBAS Saint Kitts and Nevis
Barbuda AGBBQ Antigua and Barbuda

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 m

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 (0 locations). Calculation based on advisory number 11 of 21 Sep 2021 09:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)