Sapporo, Japan
7-day weather outlook — conditions across the region
7-day forecast — temperature, precipitation & wind
7-day wind & rain chance
Signal — Current Conditions
23.9°C
Clear sky · feels 23.8°C · humidity 48%
Signal — Wind
5.4 km/h
Gusts to 16.9 km/h · direction 334°
Signal — Pressure & Sun
1017 hPa
Sunrise 05:09 · Sunset 17:52
Signal — Sky & Visibility
6% cloud
Visibility 49.9 km · dew point 12.1°C
Signal — Earthquake
97.5 / 100
2000 events considered (30yr, 300km radius)
Nearest M5.5+: 13 km N of Shiraoi, Japan (44.4 km, M5.5)
Signal — Flood / Terrain
12 / 100
Elevation 20 m · slope 2.3°
Signal — Economic Impact
$1,400 / yr expected
Based on country average estimate property value ($194,400)
Signal — Wildfire (24h)
0 hotspots
None detected within ~55km
Signal — Air Quality
30 AQI
Dominant pollutant: pm25 · Kita 1 Jonishi, Hokkaido Prefecture, Japan (北１条札幌市中央区)
Signal — UV Index
5.85 (Moderate)
Today's peak UV, Open-Meteo
Signal — Tsunami Risk
HIGH
Based on largest nearby earthquake magnitude (30yr history)
Signal — Nearest Volcano
42 km
Shikotsu (Caldera) · last erupted 1981
Tectonic setting: Subduction zone / Continental crust (> 25 km)
The 13 x 15 km Shikotsu caldera, largely filled by the waters of Lake Shikotsu, was formed during one of Hokkaido's largest Quaternary eruptions about 31-34,000 years ago. The small andesitic Tarumaesan stratovolcano was then constructed on its SE rim and has been frequently active over the past 300 years. Pyroclastic-flow deposits from Tarumaesan extend nearly to the Pacific coast. Two other Holo…
Nearest other major location: Sendai, Japan (535 km)
Next 24 hours — hourly detail
Next 24 hours — pressure & humidity
30-Day Event Count
21
0.7/day · Normal activity (z=0.71)
Last 7 Days
2 events
10% of this month's activity happened this week
Largest Event
M6
Avg M4.57 · min M4 · σ 0.43
Energy Released
17,655 t TNT
Cumulative seismic energy, 30 days (Gutenberg-Richter)
Depth Profile
81.6 km avg
0.0% shallow (<10km) · range 10–316.8 km
Underwriting Signal
59.0/100
Recommended tier: Standard
95% Confidence Range
12.0–30.0
Statistically expected event count for this window
Projected: 255.5 events/yr · 0.3% chance of M5+ within 1 year · 0.1% 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)
USGS FDSN
Signal — Solar Wind
431 km/s (Slightly elevated)
Magnetic field: 4.2 nT (Quiet)
Signal — Geomagnetic (Kp)
0.0 / 9
Quiet — planetary K-index
Signal — Solar Flare
B3.5
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.
Global Disaster Alert and Coordination System (GDACS)
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