A second NOAA G1 interval makes high-latitude operators the short-term watch
By OnTheRice · Sources and limitations · Report a correction
NOAA recorded a minor G1 geomagnetic storm in two three-hour periods on October 4, from 09:00–12:00 and 12:00–15:00 UTC. Its K-index-5 warning lasted through 21:00 UTC. Possible effects mainly concern areas beyond 60° geomagnetic latitude, including weak grid fluctuations and minor satellite impacts. These are possible effects, not reported damage; check the next alert before assuming continuation.
Source confidenceNot assessed
What’s changing?
Consecutive storm periods make duration and high-latitude location useful checks, without establishing a broad financial-market effect.
Key points
- NOAA SWPC’s public alerts.json feed showed K-index-5 threshold alerts at 11:22 UTC (issued 11:23) for the 09:00–12:00 synoptic period and at 14:02 UTC (issued 14:03) for 12:00–15:00 UTC. A K-index-5 warning issued at 11:07 UTC was valid through 21:00 UTC. NOAA labelled the event G1 Minor; its listed potential impacts were primarily poleward of 60° geomagnetic latitude, with weak power-grid fluctuations and minor satellite-operation effects possible.
What could change this view?
- The NOAA product describes a G1 minor storm and potential, not observed, grid or satellite damage. Its impact zone is stated in geomagnetic latitude; no interruption, asset loss or financial outcome is reported.
Bottom line
Review the next NOAA SWPC alert after the 12:00–15:00 UTC synoptic period and track whether K-index remains at or above 5 before 21:00 UTC.
This is based on the information recorded with this signal.
Terms in simple English
These explanations help you read this signal. The saved forecast, prices, deadline and outcome rules stay the same.
- Asset or investible
- Something that can be bought or sold, such as a share, bond, fund, currency or cryptocurrency.
- UTC and SGT
- UTC is a world time standard. SGT is Singapore time, eight hours ahead of UTC.
How likely is this call? · Three frameworks
This signal has no investible bullish or bearish call. A market-direction percentage does not apply.
Evidence behind this view
Checks whether separate pieces of evidence support the same view.
Recorded connection
Two consecutive 3-hour K-index-5 intervals, within a warning window extending to 21:00 UTC, make a limited high-latitude operations check more useful than a broad market interpretation.
We have not established a separate count of independent evidence clusters for this card. Several reports may rely on the same event or data provider.
What past price moves show
Compares today’s price moves with recorded past patterns.
This card has no recorded investible call. A price-pattern comparison is not applicable unless a specific asset is added with evidence.
Evidence against this view
Shows evidence and risks that could challenge this view.
Recorded opposing evidence and risks
The NOAA product describes a G1 minor storm and potential, not observed, grid or satellite damage. Its impact zone is stated in geomagnetic latitude; no interruption, asset loss or financial outcome is reported.
Why the direction changed
Explains recorded changes from expecting a rise to expecting a fall, or the reverse.
No documented bullish-to-bearish or bearish-to-bullish change is available for this card. We keep the original call and its time unchanged.
What people say vs the facts
Compares recorded public discussion with checked market facts.
No separate Reddit or public-discussion comparison with verified market data is recorded for this card. We cannot treat social attention as proof of a market move.
How past forecasts performed
Shows recorded forecast results and what they can teach us.
This card has no recorded investible forecast to score.
No tested mapping from evidence combinations to future success is recorded for this card. Confidence in sources and past outcomes do not establish a calibrated probability.
Sources, original wording and price checks
Published
First published through Sites 05 Oct 2026, 01:54:01 SGT
No explicit investible BULLISH or BEARISH call on this card.
What changed
Recorded public historyNOAA’s 4 October alerts record geomagnetic K-index 5 in two consecutive three-hour periods, 09:00–12:00 and 12:00–15:00 UTC; its official…
This is the first recorded public view. Further public updates will appear here.
- A second NOAA G1 interval makes high-latitude operators the near-term watch
NOAA’s 4 October alerts record geomagnetic K-index 5 in two consecutive three-hour periods, 09:00–12:00 and 12:00–15:00 UTC; its official K-index-5 warning is valid through 21:00 UTC. The agency labels the event G1 minor and places likely effects poleward of 60° geomagnetic latitude, where weak power-grid fluctuations or minor satellite-operation impacts are possible. That makes duration and latitude the actionable details for regional utilities and satellite operators. Next check whether another K-index-5 alert follows the 15:00 UTC window, rather than assuming conditions persist.
First published by OTR: 5 Oct, 01:54 SGTPublished by OTR: 5 Oct 2026, 01:54 SGT
Why the view changed
This is the first recorded view. Future source-backed updates will appear here.
Evidence, memory & review 2 linked sources
Directional takeaway: N/A: the cited observations do not support an asset-specific listed-security conclusion.
OTR reasoning: Two consecutive 3-hour K-index-5 intervals, within a warning window extending to 21:00 UTC, make a limited high-latitude operations check more useful than a broad market interpretation.
Counterpoint: The NOAA product describes a G1 minor storm and potential, not observed, grid or satellite damage. Its impact zone is stated in geomagnetic latitude; no interruption, asset loss or financial outcome is reported.
Source-grounded facts (paraphrased)
- Time not supplied: NOAA SWPC’s public alerts.json feed showed K-index-5 threshold alerts at 11:22 UTC (issued 11:23) for the 09:00–12:00 synoptic period and at 14:02 UTC (issued 14:03) for 12:00–15:00 UTC. A K-index-5 warning issued at 11:07 UTC was valid through 21:00 UTC. NOAA labelled the event G1 Minor; its listed potential impacts were primarily poleward of 60° geomagnetic latitude, with weak power-grid fluctuations and minor satellite-operation effects possible.
Source trail
- NOAA SWPC alerts feed ↗NOAA Space Weather Prediction CenterALTK05 issued 2026 Oct 04 1403 UTC; preceding ALTK05 issued 1123 UTC; WARK05 valid 1110–2100 UTC · UTC
- Alerts, Watches and Warnings ↗NOAA / NWS Space Weather Prediction CenterPage explicitly states current Alerts, Watches and Warnings data are available directly from the linked JSON file; page clock not used for alert facts. · Not applicable to evidence claim
Review status: SUPPORTED PUBLIC PUBLISHER FEED
This evidence panel does not assign a score or probability. Any forecast estimate is shown separately with its own source and limitations.