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Nuku'alofa, Tonga

-21.1343, -175.2018  ·  updated 06 Sep 2026, 04:41 UTC  ·  composite signal 64.2/100
64.2Composite /100
HIGHTsunami Risk
17Air Quality
48kmNearest Volcano
0Wildfire Hotspots
7.75UV Index
0.0Kp Index
5Quakes 7d
Seismic activity map for Nuku'alofa, Tonga

7-day weather outlook — conditions across the region

7-day weather forecast map for Nuku'alofa, Tonga

7-day forecast — temperature, precipitation & wind

7-day wind & rain chance

Global baseline

Signal — Current Conditions

22.0°C

Partly cloudy · feels 20.6°C · humidity 63%

Signal — Wind

20.1 km/h

Gusts to 43.6 km/h · direction 120°

Signal — Pressure & Sun

1016 hPa

Sunrise 06:44 · Sunset 18:32

Signal — Sky & Visibility

23% cloud

Visibility 42.7 km · dew point 14.7°C

Signal — Earthquake

98.5 / 100

2000 events considered (30yr, 300km radius)

Nearest M5.5+: 46 km W of Haveluloto, Tonga (48.0 km, M5.6)

Signal — Flood / Terrain

30 / 100

Elevation 5 m · slope 1.9°

Signal — Economic Impact

$1,516 / yr expected

Based on country average estimate property value ($194,400)

Signal — Wildfire (24h)

0 hotspots

None detected within ~55km

Signal — Air Quality

17 AQI

Dominant pollutant: pm25 · Ocean View, Hawaii, USA

Signal — UV Index

7.75 (High)

Today's peak UV, Open-Meteo

Signal — Tsunami Risk

HIGH

Based on largest nearby earthquake magnitude (30yr history)

Signal — Nearest Volcano

48 km

Tofua Arc at 20.9°S (Stratovolcano) · last erupted 2017

Nearest other major location: Alofi, Niue (598 km)

Next 24 hours — hourly detail

Next 24 hours — pressure & humidity

Seismic activity analysis (30-day, 500km)

30-Day Event Count

38

1.27/day · Above normal activity (z=4.71)

Last 7 Days

5 events

13% of this month's activity happened this week

Largest Event

M5.1

Avg M4.47 · min M4 · σ 0.29

Energy Released

4,834 t TNT

Cumulative seismic energy, 30 days (Gutenberg-Richter)

Depth Profile

329.0 km avg

0.0% shallow (<10km) · range 10–619.0 km

Underwriting Signal

63.6/100

Recommended tier: Standard

95% Confidence Range

25.9–50.1

Statistically expected event count for this window

Projected: 462.3 events/yr · 0.5% chance of M5+ within 1 year · 0.2% chance of M6+ within 5 years · 0.0% chance of M7+ within 10 years

Same statistical model as your Risk Evidence Report (USGS FDSN, 30-day/500km window)

Recent significant earthquakes (30yr, 300km)
M7.5 — 158 km W of Neiafu, Tonga 290 km, 234 km deep
M7.2 — 274 km SW of Houma, Tonga 285 km, 179 km deep
M7 — 61 km SSE of Pangai, Tonga 149 km, 29 km deep
M6.9 — 75 km W of Pangai, Tonga 148 km, 96 km deep
M6.6 — 70 km NW of Fangale’ounga, Tonga 203 km, 137 km deep
M6.5 — 207 km WSW of Haveluloto, Tonga 209 km, 246 km deep

USGS FDSN

Space weather (planetary signal)

Signal — Solar Wind

338 km/s (Calm)

Magnetic field: 6.3 nT (Unsettled)

Signal — Geomagnetic (Kp)

0.0 / 9

Quiet — planetary K-index

Signal — Solar Flare

B5.6

Current GOES X-ray flux class

Solar wind speed and magnetic field strength indicate current space weather activity. Elevated or storm-level readings can disrupt satellites, GPS accuracy, and power grids. This is a planetary-scale signal, not specific to this location — typical quiet conditions run under 400 km/s wind speed and under 5 nT magnetic field.

Source: NOAA SWPC (planetary signal, same for every location)

Sources: USGS (earthquakes), Open-Elevation (terrain), Open-Meteo (weather). Illustrative estimate, not a certified engineering or actuarial assessment.

No country-specific deep dive built yet for Tonga. Global baseline data above still reflects real, live USGS and elevation data for this exact coordinate.

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