Live Kp index, solar flares, and viewing forecast — recorded continuously from NOAA SWPC
Space Weather Message Code: WARK04 Serial Number: 5378 Issue Time: 2026 Jul 05 0256 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5377 Valid From: 2026 Jul 03 1209 UTC Now Valid Until: 2026 Jul 05 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Space Weather Message Code: WARK07 Serial Number: 152 Issue Time: 2026 Jul 05 0027 UTC CANCEL WARNING: Geomagnetic K-index of 7 or greater expected Cancel Serial Number: 151 Original Issue Time: 2026 Jul 04 0501 UTC Wrong date in the original end time. Warning was supposed to expire at 04/1200z. Wrong date in the original end time. Warning was supposed to expire at 04/1200z. NOAA Scale: G3 - Greater
Space Weather Message Code: WARK06 Serial Number: 666 Issue Time: 2026 Jul 05 0005 UTC CANCEL WARNING: Geomagnetic K-index of 6 expected Cancel Serial Number: 665 Original Issue Time: 2026 Jul 04 1357 UTC Wrong date in the original end time. Warning was supposed to expire at 04/2100z. Wrong date in the original end time. Warning was supposed to expire at 04/2100z.NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Space Weather Message Code: ALTK05 Serial Number: 2038 Issue Time: 2026 Jul 04 2300 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2026 Jul 04 2301 UTC Synoptic Period: 2100-2400 Active Warning: YES Noaa Scale: G1 - Minor Comment: NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Space Weather Message Code: SUMX01 Serial Number: 220 Issue Time: 2026 Jul 04 2116 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2026 Jul 04 2029 UTC Maximum Time: 2026 Jul 04 2041 UTC End Time: 2026 Jul 04 2047 UTC Xray Class: X1.3 Optical Class: Location: N15W75 Noaa Scale: R3 - Strong Comment: NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
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