NOAA Space Weather Prediction Center

Safeguarding society with actionable space weather information.

[NOAA Space Weather Prediction Center @NWSSWPC]

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2242
Valid From: 2026 Jun 25 0337 UTC
Now Valid Until: 2026 Jun 25 1500 UTC
Warning Condition: Persistence

NOAA Scale: G1 - Minor
Issue Time: 2026 Jun 25 0847 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 25 0337 UTC
Valid To: 2026 Jun 26 0900 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor
Issue Time: 2026 Jun 25 0338 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

Large sunspot group emergence & growth captured by Solar Orbiter. The region is expected to rotate into Earth-view on 24 June. SWPC forecasters will then be able to fully analyze the region and adjust solar activity forecasts if needed. Stay aware at https://t.co/TV7Yw6Lq1Y

[NOAA Space Weather Prediction Center @NWSSWPC]

AR 4473 produced an M6.8 flare with an associated Type II radio sweep with an estimated speed of 380 km/s, indicating a possible subsequent CME. Analysis will begin as coronagraph imagery becomes available, but given the source location an Earth-directed component is unfavorable.

[NOAA Space Weather Prediction Center @NWSSWPC]

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 21 1927 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate
Issue Time: 2026 Jun 21 1930 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

G2 Watch for 13 Jun UTC-day. We have high confidence in timing, but less confidence regarding intensity. Why is that, how do we make those forecasts and determinations, and what next? Check out this latest SWPC video from 11 June get answers to these questions.

[NOAA Space Weather Prediction Center @NWSSWPC]

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 11 2014 UTC
Valid To: 2026 Jun 12 0300 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor
Issue Time: 2026 Jun 11 2015 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

https://t.co/P0PY4ipmMQ is the full link directly to the new solar wind observations that includes SOLAR-1

[NOAA Space Weather Prediction Center @NWSSWPC]

SOLAR-1 is now operational! The new SOLAR-1 observations can be seen on our webpage at https://t.co/CxVMJhZprU The full NOAA statement about SOLAR-1 now being operational is at https://t.co/LSieFuST3X

[NOAA Space Weather Prediction Center @NWSSWPC]

Learn more about SOLAR-1 and how to see the observations of the solar wind from our new NOAA operational spacecraft by watching this SWPC video posted 10 June, 2026 @NWSWPC @NOAA @NOAASatellites

[NOAA Space Weather Prediction Center @NWSSWPC]

WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Jun 07: None (Below G1) Jun 08: G3 (Strong) Jun 09: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:

Issue Time: 2026 Jun 06 2211 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

A G3 geomagnetic storm Watch has been issued for 8 Jun, and a G2 geomagnetic storm Watch has been issued for 9 Jun for the anticipated arrival of the CME that left the Sun on 6 Jun. Stay tuned for updates!

[NOAA Space Weather Prediction Center @NWSSWPC]

AR 4461 produced an M1.8 flare at 06/1401 UTC. This event was associated with a filament eruption and subsequent CME of which analysis and modeling is currently underway. An Earth-directed component is currently anticipated and would likely arrive on June 8th by rough estimates.

[NOAA Space Weather Prediction Center @NWSSWPC]

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2239
Valid From: 2026 Jun 05 1228 UTC
Now Valid Until: 2026 Jun 06 1500 UTC
Warning Condition: Persistence

NOAA Scale: G1 - Minor
Issue Time: 2026 Jun 06 0435 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

G2 geomagnetic storm levels reached following the likely arrival of the anticipated CME(s) from 3 Jun. Stay tuned for updates!

[NOAA Space Weather Prediction Center @NWSSWPC]

EXTENDED WARNING: Geomagnetic K-index of 6 expected
Extension to Serial Number: 661
Valid From: 2026 Jun 05 1437 UTC
Now Valid Until: 2026 Jun 06 0300 UTC
Warning Condition: Persistence

NOAA Scale: G2 - Moderate
Issue Time: 2026 Jun 05 1721 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2238
Valid From: 2026 Jun 05 1228 UTC
Now Valid Until: 2026 Jun 06 0600 UTC
Warning Condition: Persistence

NOAA Scale: G1 - Minor
Issue Time: 2026 Jun 05 1719 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2026 Jun 05 1714 UTC
Valid To: 2026 Jun 05 2359 UTC
Warning Conditions: Onset
Noaa Scale: G3 - Greater
Comment:

NOAA Scale: G3 - Greater
Issue Time: 2026 Jun 05 1716 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Jun 05 1437 UTC
Valid To: 2026 Jun 05 2100 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate
Issue Time: 2026 Jun 05 1441 UTC
https://t.co/ZbtuNtJdza

[NOAA Space Weather Prediction Center @NWSSWPC]

A minor (G1) storm alert has been issued as the expected disturbance reaches Earth.