🌊 Volcanic tremor — Katla (Mýrdalsjökull) — The baseline tremor is currently low and should only be compared to recent days since win…

IMO tremor plot (station god). Most of the signal is weather and surf — not eruption confirmation. All stations: vedur.is ↗.

Weather now: wind 4 m/s (Reynisfjalli) — moderate.

The baseline tremor is currently low and should only be compared to recent days since wind and wave correlations are unreliable at this station. (AI)

Band analysis past 9 days (from digitized RSAM values). High 2-4 Hz + low 0.5-1 Hz = possible magma-movement signal; high 0.5-1 Hz without 2-4 Hz = weather/surf.

Depth is automatic and uncertain; earthquakes alone do not show magma movement — deformation (GPS) and gas are needed. Grey points: automatic fixed-depth values. b-value computed for M≥1.5 (automatic magnitudes make lower completeness unreliable). Preliminary data.

Uplift — GNSS deformation (Reykjanes)

Crustal deformation from continuous GNSS (Nevada Geodetic Lab, Eurasia plate-fixed). Up = land rising (possible magma accumulation), down = subsidence. Daily final solution with about a three-week lag (latest 2026-06-27); third-party reprocessing, not the Met Office real-time solution.

InSAR. InSAR (Sentinel-1 radar) maps surface deformation across the whole area, complementing the GNSS point measurements. Raw interferograms need expertise to read, so they are not shown here — interpreted deformation maps and current status: Icelandic Met Office · raw data: COMET LiCSAR.

Gas / SO₂. Volcanic gas (SO₂) is not shown here from raw data — Sentinel-5P TROPOMI needs heavy integration and is often faint at high latitudes outside major eruptions. Interpreted gas monitoring: air quality (Environment Agency) · MOUNTS Reykjanes ↗ · Copernicus atmosphere.

Satellite thermal anomalies (VIIRS · NASA FIRMS)

4 thermal anomalies detected in the region over the last 48 h, mostly near: scattered. Thermal anomalies can indicate active lava but also other heat (industry, fires); confirm at vedur.is.