Hari5115/nasa-donki

NASA DONKI — Space Weather Events

Solar and space weather events recorded by NASA's Space Weather Database Of Notifications, Knowledge, Information (DONKI) since 2010. 9,294 events across 7 types — solar flares, coronal mass ejections (CMEs), geomagnetic storms, interplanetary shocks, and more.

Source

• API: NASA DONKI API
• Data refreshed: periodically via NASA DONKI public API

Event types

Code	Full name	Count	Description
CME	Coronal Mass Ejection	3,525	Large expulsions of plasma from the Sun
FLR	Solar Flare	3,332	Intense bursts of radiation from the Sun
IPS	Interplanetary Shock	1,369	Shock waves propagating through the solar wind
SEP	Solar Energetic Particle	477	High-energy particles from solar events
RBE	Radiation Belt Enhancement	295	Increases in Earth's radiation belt particle flux
GST	Geomagnetic Storm	198	Disturbances to Earth's magnetosphere
MPC	Magnetopause Crossing	98	Solar wind crossing Earth's magnetopause boundary

Notes

• Nulls are by design: different event types capture different fields. CMEs don't have peak/end times; geomagnetic storms don't have source locations. Nulls mean the field is not applicable, not missing data.
• class_type means different things per event type — for solar flares it's the X-ray class (e.g. X2.1, M5.3), for geomagnetic storms it's the Kp index.
• source_loc is the heliographic coordinates of the solar source (e.g. N15E20).

Usage

import pandas as pd

df = pd.read_parquet("data/donki.parquet")

# Solar flares only
flares = df[df["event_type"] == "FLR"].sort_values("begin_time")

# X-class flares (strongest category)
x_class = df[
    (df["event_type"] == "FLR") &
    (df["class_type"].str.startswith("X", na=False))
]

# Severe geomagnetic storms (Kp >= 7)
storms = df[df["event_type"] == "GST"].copy()
storms["kp"] = pd.to_numeric(storms["class_type"], errors="coerce")
severe = storms[storms["kp"] >= 7]

# Events per year breakdown
df.groupby(["year", "event_type"]).size().unstack().plot(kind="bar")

Attribution

Data sourced from NASA DONKI (Space Weather Database Of Notifications, Knowledge, Information), maintained by the Community Coordinated Modeling Center at NASA Goddard Space Flight Center.

This dataset is independently collected from the NASA DONKI public API and is not officially affiliated with or endorsed by NASA.