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3 Day Geomagnetic Forecast
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June 18 |
June 19 |
June 20
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3 (G0)
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4 (G0)
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3-4 (G0)
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Max Kp |
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M-Lat
05%
H-Lat
30% |
M-Lat
20%
H-Lat
50% |
M-Lat
15%
H-Lat
40% |
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Probabilities |
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Latest SWPC Forecast (@ 00:30 + 12:30 UTC)

Current Moon Phase:
13% Illumination
Waxing Crescent
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Noteworthy Flare Events (Past 72h)
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No Noteworthy Flare Events Detected.
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Visible Sunspot Regions

Updated @ 00:40 UTC (June 18)

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Global D-LAYER Absorption
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Current Solar Flare Threat
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C-Flare: 70%
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M-Flare: 10%
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X-Flare: 01%
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Proton: 01%
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Geomagnetic Field and Aurora |
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Past 24 Hours |
Quiet |
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Latest Space Weather News
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All Quiet
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June 17, 2026 @ 00:40 UTC
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Hello again folks. Below is a look at the visible solar disk as we head into Wednesday. Not much to report as solar activity is currently at very low levels. None of these regions appear to be much of a threat for noteworthy solar flares.
Geomagnetic activity is expected to be at Quite to Active (Kp4) levels over the next few days due to potential coronal hole stream effects.
Stay tuned to SolarHam.com for the latest space weather news and information

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Weak CME Passage
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June 13, 2026 @ 10:20 UTC (UPDATED)
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What appears to be a shock passage was detected by the ACE spacecraft at 09:56 UTC (June 13). This is possibly the CME observed leaving the Sun on June 11 arriving a little later than predicted. The solar wind speed increased from around 570 km/s to currently near 650 km/s. More details to follow whenever necessary.
UPDATE #2 (00:45 UTC June 14): The weak CME passage on Saturday has so far failed to generate a geomagnetic storm. Moderate (G2) storming is no longer expected and a minor (G1) storm watch will continue for the next 3-6 hours.
UPDATE: NOAA/SWPC do indicate this to be a shock passage after 09:45 UTC and are keeping a minor (G1) to moderate (G2) storm watch in effect for the remainder of Saturday (UTC).

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Minor (G1) Storm in Progress
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June 11, 2026 @ 20:50 UTC
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A surprise geomagnetic storm (G1-Minor) is currently in progress thanks to a south pointing Bz/IMF component of the solar wind.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 11 2040 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G1 - Minor
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Long Duration C-Flare + CME
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June 11, 2026 @ 01:45 UTC (UPDATED)
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This long duration mid level C-Flare was observed around AR 4465 in the northeast quadrant peaking at 00:02 UTC (June 11). While this may not seem like much, coronal dimming is evident and a coronal mass ejection (CME) with a possible Earth directed component is associated. More to follow once a tracking model is available.
UPDATE: A minor (G1) geomagnetic storm watch was added beginning June 13th. The CME associated with the duration C6 flare appears to be heading mostly to the east with a glancing blow possible late on Saturday (UTC). High latitude sky watchers should be alert this weekend should local light and weather conditions allow.
ALERT: Type II Radio Emission
Begin Time: 2026 Jun 11 0013 UTC
Estimate Velocity: 918 km/s


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