Composite Seismic Pressure Index

GWN Prediction Center

Novel multi-variable seismic potential forecast combining tidal mechanics, space weather, planetary alignments, and atmospheric loading into the GWN-CSPI index.

Data fetched: 08:46 UTC  ·  Auto-refreshes every 5 minutes
Acquiring location for atmospheric pressure…

GWN-CSPI Score

0 25 50 75 100
--
GWN-CSPI
Calculating…
KP --  ·  SW -- km/s
GWNSPI = Σ(wᵢ × Fᵢ)
F1 · Seismic Base Ratew = 0.15

Seismic Activity

--
Loading…
score: --
F2 · Lunar Tidalw = 0.35

Moon Phase & Tide

--
Loading…
score: --
F3 · Solar-Geomagneticw = 0.25

Space Weather

--
Loading…
score: --
F4 · Solar Tidalw = 0.10

Earth-Sun Distance

--
Loading…
score: --
F5 · Planetary Tidalw = 0.05

Planetary Alignment

--
Loading…
score: --
F6 · Atmospheric Loadingw = 0.10

Surface Pressure

--
Awaiting geolocation…
score: --

KP Index & Estimated CSPI — Last 7 Days

KP from NOAA SWPC (3-hour intervals) · CSPI estimated per interval using current non-KP factor values

Novel Composite Formula

GWN-CSPI Methodology

1Seismic Base Rate (w=0.15)

P = (N₇ / N̄₇) × 50
N̄₇ = 26 (expected M5+ per 7 days globally)

Normalized count of M5+ earthquakes in the preceding 7 days vs. the long-term Gutenberg-Richter baseline. Elevated recent activity signals loaded fault systems.

2Lunar Tidal Index (w=0.35)

FR(φ) = cos²(2πφ)
F2 = FR(φ) × (d̄moon / d)³ × 100

Peaks at both new moon (φ=0) and full moon (φ=0.5) where tidal stress is maximized. Distance modulation (d̄/d)³ amplifies during lunar perigee. Highest single weight — peer literature confirms 2–4× seismicity correlation at tidal extremes.

3Solar-Geomagnetic Index (w=0.25)

P_sw = 1.67×10⁻⁶ × n × v² (nPa)
F3 = (0.5 × P_sw/P̄_sw + 0.5 × KP/9) × 100

Solar wind dynamic pressure and KP geomagnetic index combined. CMEs, solar storms, and elevated KP correlate with increased crust magnetostriction and induced telluric currents that can trigger fault slip.

4Solar Tidal Factor (w=0.10)

F4 = (d̄sun / d_sun)³ × 50

Earth-Sun tidal force modulation due to orbital eccentricity (~3.3% variation between perihelion in January and aphelion in July). Contributes ~10× less than lunar tidal but still measurable in global M8+ statistics.

5Planetary Tidal Enhancement (w=0.05)

F_p = Σ [2G·Mₚ·R_E / dₚ³]
F5 = min(100, F_p / F_moon_ref × 2000)

Sum of tidal accelerations from Venus, Mars, Jupiter, Saturn, Uranus, Neptune relative to mean lunar tidal force. Peaks during rare multi-planet alignments. Individual planets contribute 0.001–0.01% of lunar tidal, but combined alignment events amplify the signal.

6Atmospheric Loading (w=0.10)

F6 = min(100, |P_local − 1013.25| / 12 × 100)

Deviation from standard sea-level pressure. Deep low-pressure systems reduce overburden stress on shallow faults, while high-pressure anomalies increase it. Requires user geolocation for local reading via Open-Meteo.

Factor Weights — GWN-CSPI = Σ(wᵢ × Fᵢ_score)

F2 Lunar Tidal
35%
F3 Solar-Geomagnetic
25%
F6 Atmospheric Loading
10%
F4 Solar Tidal
10%
F1 Seismic Base Rate
15%
F5 Planetary Tidal
5%

Research & Educational Use Only. The GWN-CSPI is an experimental composite index developed by Global Warning Networks as a novel approach to seismic potential forecasting. It is not a prediction of specific earthquakes and should not be used for emergency response or civil protection decisions. No existing formula reliably predicts individual earthquake occurrence; this index quantifies relative environmental stress conditions only.