How many geomagnetic storm days were there last month?

The planetary Kp index reached 5 or more on 4 days in Oct 2026, as GFZ Helmholtz Centre for Geosciences reports it, counted by Tickerz.

Can I download the $KPSTORM data?

Yes, free and with no key: the full history as JSON at https://tickerz.com/api/indices/kpstorm and every period as CSV at https://tickerz.com/api/indices/kpstorm/history.csv.

$KPSTORM

Days with a geomagnetic storm

days in Oct 2026

How it is counted

Normal2 to 6

Highest10Jan 2026

Unusual months4

Counts: Days in a month (UTC) on which the planetary Kp index reached 5 in any of its eight three-hour slots: a geomagnetic storm, G1 or stronger on NOAA's scale. Kp comes in thirds, so 5- (4.67) does not count and 5 does. Read from the Kp file of GFZ Helmholtz Centre for Geosciences, which makes the index. A month prints once every slot of every day is in. GFZ's newest values are nowcasts replaced by definitive values about a month later; the record keeps any revision. Counted from January 2010.
Why it is here: The Sun is two years past the top of its eleven year cycle, and some months the Earth's magnetic field still shakes hard enough for auroras on several days.
Source: GFZ Helmholtz Centre for Geosciences, Geomagnetic Observatory Niemegk, Kp index since 1932
Terms: CC BY 4.0 for Kp. The same file carries sunspot numbers under CC BY-NC 4.0; Tickerz does not read or keep them.
Cadence: Monthly. GFZ posts Kp within hours of each slot; a month prints the day after it ends, once every day is in. Newest complete month Oct 2026. Read Nov 13, 07:40 UTC.
Baseline: The prior 24 months, 12 needed.
Notice: Kp index: Matzka, J., Bronkalla, O., Tornow, K., Elger, K. and Stolle, C., 2021. Geomagnetic Kp index. GFZ Data Services, https://doi.org/10.5880/Kp.0001. CC BY 4.0.

Quote this number

Earth had 4 days with a geomagnetic storm in Oct 2026, according to Tickerz, which counts them from GFZ's Kp index.

Source: Tickerz $KPSTORM (Days with a geomagnetic storm), from GFZ Helmholtz Centre for Geosciences, Geomagnetic Observatory Niemegk, Kp index since 1932.tickerz.com/x/kpstorm

Asked often

How many geomagnetic storm days were there last month?: The planetary Kp index reached 5 or more on 4 days in Oct 2026, as GFZ Helmholtz Centre for Geosciences reports it, counted by Tickerz.
Where does the $KPSTORM number come from?: Tickerz reads it from GFZ Helmholtz Centre for Geosciences, Geomagnetic Observatory Niemegk, Kp index since 1932. Monthly. GFZ posts Kp within hours of each slot; a month prints the day after it ends, once every day is in. Each number is kept as it was first published, with a timestamped proof, and any later revision is shown beside it.
Can I download the $KPSTORM data?: Yes, free and with no key: the full history as JSON at https://tickerz.com/api/indices/kpstorm and every period as CSV at https://tickerz.com/api/indices/kpstorm/history.csv.

List it

No listing kit for $KPSTORM yet. A kit sets its strikes from 14 published numbers. This index publishes one a month and has none yet.

Resolution

Index

$KPSTORM Days with a geomagnetic storm. Rulebook v0.2, 2026-10-04.

Prints

Monthly. GFZ posts Kp within hours of each slot; a month prints the day after it ends, once every day is in. The newest complete month is on the record after the daily proof at 12:40 UTC.

As first published

Oct 2026 is not timestamped yet. The daily proof at 12:40 UTC adds it.

The number as first published is final for settlement. A revision by the source is shown beside it and never replaces it.

Fallback

A month prints the day after it ends once all eight Kp values of every day are in. A slot GFZ leaves at -1 keeps the month open. If the file has no day in the last three, the read fails. A month GFZ never completes is void.

Precision

Whole days, UTC, with at least one three-hour Kp of 5 or more.

Cost to move

Not possible. It is measured at observatories around the world.

Grade

reference. The official planetary Kp index from the observatory that makes it, under CC BY 4.0. A nowcast can be corrected by a third, which can move a day across the line; the record keeps the revision.

For a rulebook

Settle on the number Tickerz first recorded for $KPSTORM for the month named in the contract, published at tickerz.com/x/kpstorm and in GET /api/indices/kpstorm, timestamped daily in Bitcoin with OpenTimestamps.

As first published

None on file yet.

Embed

Theme

Size

Badge

Card

Card, iframe

<iframe src="https://tickerz.com/embed/kpstorm" title="$KPSTORM on Tickerz" width="480" height="200" style="border:0;max-width:100%" loading="lazy" allow="clipboard-write"></iframe>

Proof and data

Proof: Every reading is timestamped in Bitcoin once a day, so nobody can change it later. The newest proof covers Nov 12, in Bitcoin block 975,557.Proof file Live feed How it works
Data: The full history, free, no key.JSON CSV API docs

Name a number

Name a number you want counted. Within 48 hours it is a ticker, or you get the plain reason it cannot be built. Answers