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
GDACS Current 46 km/h 0.0 m n.a. 0.5
GDACS 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)

Wind

46 km/h Current Max.

Up to 2.1 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
Green 12 21 Sep 2021 15:00 65 2.2 million No people Virgin Islands British, Virgin Islands U.S., Puerto Rico, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Green 13 21 Sep 2021 21:00 56 2.2 million No people Virgin Islands British, Virgin Islands U.S., Puerto Rico, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Green 14 22 Sep 2021 03:00 56 2.2 million No people Puerto Rico, Virgin Islands British, Virgin Islands U.S., Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Green 15 22 Sep 2021 09:00 56 2.2 million No people Puerto Rico, Virgin Islands U.S., Virgin Islands British, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Green 16 22 Sep 2021 15:00 56 2.2 million No people Puerto Rico, Virgin Islands U.S., Virgin Islands British, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Green 17 22 Sep 2021 21:00 56 2.2 million No people Puerto Rico, Virgin Islands U.S., Virgin Islands British, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda
Green 18 23 Sep 2021 03:00 46 2.2 million No people Puerto Rico, Virgin Islands U.S., Virgin Islands British, Anguilla, Saint Kitts and Nevis, Antigua and Barbuda

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 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 <1000 people no 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 210000 people no people 19.8, -62.8
GREEN
11 21 Sep 2021 09:00 Tropical storm 83 1.9 million people no people 19.6, -63.8
GREEN
12 21 Sep 2021 15:00 Tropical storm 65 1.9 million people no people 19.9, -64.7
GREEN
13 21 Sep 2021 21:00 Tropical depression 56 no people no people 20.5, -65
GREEN
14 22 Sep 2021 03:00 Tropical depression 56 no people no people 20.8, -65.3
GREEN
15 22 Sep 2021 09:00 Tropical depression 56 no people no people 21.5, -66.1
GREEN
16 22 Sep 2021 15:00 Tropical depression 56 no people no people 21.6, -66.9
GREEN
17 22 Sep 2021 21:00 Tropical depression 56 no people no people 21.7, -66.7
GREEN
18 23 Sep 2021 03:00 Tropical depression 46 no people no people 22.1, -67
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
Puerto Rico
Virgin Is.
British Virgin Is.
Anguilla
St. Kitts & Nevis
Antigua & Barbuda

Provinces

Region Province Country Population
Arecibo Puerto Rico -
Bayamon Puerto Rico -
San Juan Puerto Rico -
Humacao Puerto Rico -
Guayama Puerto Rico -
Virgin Is. Virgin Islands U.S. 100000 people
British Virgin Is. Virgin Islands British 18000 people
Anguilla Anguilla 9200 people
St. Kitts & Nevis Saint Kitts and Nevis 41000 people
Antigua & Barbuda Antigua and Barbuda 65000 people

Populated places

Name Region Province Country City class Population
San Juan San Juan Puerto Rico Capital 420000 people
Bayamon Bayamon Puerto Rico City 200000 people
Guaynabo Guaynabo Puerto Rico City 78000 people
Carolina Carolina Puerto Rico Major city 160000 people
Charlotte Amalie Virgin Islands Capital 10000 people
Road Town British Virgin Islands Capital 8300 people
The Valley Anguilla Capital 1300 people
Philipsburg Netherlands Antilles City 6300 people
Gustavia Guadeloupe City -
Basseterre St. Kitts and Nevis Capital 12000 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)
Dorado 23 0
Isla Grande SIG 3 Civ. Paved Yes 5300
State Government Number One 82 0
Rexach Office Building 18 0
Luis Munoz Marin International SJU 3 Civ. Paved Yes 10000
Prtc Office Building 53 0
Prasa-Barbosa 50 0
Prasa - La Plata 110 0
Bayamon Regional Hospital 34 0
Fajardo Harbor unknown 0
Diego Jimenez Torres FAJ 20 Civ. Paved No 3600
Boqueron 114 0
Roosevelt Roads Ns NRR 12 Mil. Paved Yes 11000
Benjamin Rivera Noriega CPX 15 0
Humacao 10 0
Anegada NGD unknown 0
Vieques VQS 14 Civ. Paved No 3400
H.S. Truman STT 5 Civ. Paved Yes 7000
Stouffer Grand Beach Resort 38 0
Camp Garcia Vieques 14 0
Frenchman's Reef 6 0
Cruz Bay unknown 0
St. John SJF unknown 0
Beef Island EIS 5 Civ. Paved Yes 3600
North Sound Virgin Gorda NSX unknown 0
Virgin Gorda VIJ 4 Civ. Unpaved No 3100
Christiansted Harbor- SSB unknown 0
Alexander Hamilton STX 19 Civ. Paved Yes 7600
Wallblake AXA 33 Civ. Paved Yes 3600
Grand Case CCE 2 Civ. Paved No 3900
Prinses Juliana SXM 4 Civ. Paved Yes 7000
St. Barthelemy SBH unknown Civ. Paved No 2100
F D Roosevelt EUX 38 Civ. Paved Yes 4200
Golden Rock SKB 52 Civ. Paved Yes 8000
Barbuda Codrington BBQ unknown 0

Ports

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

Dams

Reservoir Dam Name River Year
La Plata La Plata 1974

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

No locations affected by storm surge > 10 cm

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)