NOAA Space Weather Prediction Center (@NWSSWPC) / X

NOAA Space Weather Prediction Center

5,206 posts

NOAA Space Weather Prediction Center

@NWSSWPC

Safeguarding society with actionable space weather information.

Boulder, CO

Joined August 2015

NOAA Space Weather Prediction Center
@NWSSWPC
Jun 25
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 bit.ly/3wVgAKH
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 25
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 bit.ly/3wVgAKH
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 23
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 spaceweather.gov
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 21
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.
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 21
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 bit.ly/3wVgAKH
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 11
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.
00:00
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 11
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 bit.ly/3wVgAKH
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 10
SOLAR-1 is now operational! The new SOLAR-1 observations can be seen on our webpage at swpc.noaa.gov/products/ The full NOAA statement about SOLAR-1 now being operational is at noaa.gov/news-release/n…
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 10
swpc.noaa.gov/products/solar… is the full link directly to the new solar wind observations that includes SOLAR-1
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 10
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
00:00
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 6
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 bit.ly/3wVgAKH
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 6
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!
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 6
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.
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NOAA Space Weather Prediction Center
@NWSSWPC
Jun 6
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 bit.ly/3wVgAKH
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