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Geomagnetic activity forecast in Anchorage — May 18, 2026

Yesterday

Geomagnetic storm forecast in Anchorage for May 18, 2026

geomagnetic storm was expected — level G1.3 (Kp = 5.33)

Geomagnetic storm forecast for 3 days

Geomagnetic index Kp forecast from May 18, 2026 to May 20, 2026 for mid latitudes

Location — Anchorage (geographic coordinates — 61.22 N -149.88 W | time zone UTC-08 - summer time)

Forecast of the geomagnetic index Kp
This chart in PNG format — high resolution API data: JSON or TXT

Probability of geomagnetic storms for 3 days

Estimeted probability for Earth's magnetosphere state from May 18, 2026 to May 20, 2026.

Information is provided for mid latitudes for time zone UTC+00

18.05.2026
Probability of quiet conditions (green), disturbed conditions (yellow) and magnetic storms (red) for 18.05.2026
19.05.2026
Probability of quiet conditions (green), disturbed conditions (yellow) and magnetic storms (red) for 19.05.2026
20.05.2026
Probability of quiet conditions (green), disturbed conditions (yellow) and magnetic storms (red) for 20.05.2026

3-day forecast for Ap and F10.7 indices

Estimated values of Ap and F10.7 indices from May 18, 2026 to May 20, 2026 for time zone UTC+00

  18.05.202619.05.202620.05.2026
Ap 1555
F10.7 135135140

Geomagnetic storm forecast for a month

Forecast of the daily maximal value of geomagnetic index Kp for 1 month (31 days) from May 18, 2026 to Jun 17, 2026

Information is provided for mid latitudes (time zone UTC-08)

Forecast of the daily maximal value of geomagnetic index Kp for <b>1 month</b> (31 days) <b>from May 18, 2026 to Jun 17, 2026</b>
This chart in PNG format — high resolution API data: JSON or TXT