Solar Storm
Reported by NOAA Space Weather Prediction Center (GOES) 237 days ago.
What the source measured
NOAA Space Weather Prediction Center (GOES) reported: M1.2 solar flare detected by GOES X-ray sensor. Peak flux: 1.19e-5 W/m². Moderate solar flare. Minor HF radio effects on sunlit side of Earth.
How we know
2 recorded sources include NOAA Space Weather Prediction Center (GOES); independence is not established by this count.
Our own score for this event is 15 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Event data
| Type | Solar Storm |
| Severity | Medium |
| Calamity Score (ours) | 15 / 100 |
| Legacy data-support index | 0.55/1 |
| Timestamp | 2026-03-13T09:55:00.000Z |
| Source | https://www.swpc.noaa.gov/products/goes-x-ray-flux |
| Licence | US public domain · NOAA Space Weather Prediction Center (GOES) |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: goes_xray. Occurrence: 2026-03-13T09:55:00.000Z.
First archived: 2026-03-15T14:57:22.225Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score breakdown
Technical details
| FlareClass | M1.2 |
| Letter | M |
| Level | 1.19 |
| PeakFluxWm2 | 0 |
| EnergyBand | 0.1-0.8nm |
| EventType | solar_flare |
| Soho Lasco ActivityId | 2026-03-13T06:48:00-CME-001 |
| Soho Lasco SpeedKms | 432 |
| Soho Lasco HalfAngleDeg | 33 |
| Soho Lasco IsHalo | false |
| Soho Lasco EarthDirected | false |
| Soho Lasco EventType | cme |
| Soho Lasco Note | CME visible to the northwest in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. The source is far-sided, and opening field lines can be seen on the west limb in STEREO A EUV 195 imagery starting around 2026-03-13T04:55Z. An associated eruption cannot clearly be seen on-disk in STEREO A EUV imagery |
| MergedSources | [{"id":"soho_lasco_2026_03_13T06_48_00_CME_001","source":"soho_lasco","severity":"low","severityValue":20,"timestamp":1773384480000,"latitude":0,"longitude":0}] |
Safety information
What to do in a solar storm
A solar storm is not dangerous to people on the ground: it can disturb power, radio and satellite navigation. What to do, from FEMA’s Ready.gov.
For this reportSolar Storm
Nothing to fear outdoors
The atmosphere protects people on the ground; you may even see an aurora.
NOAA SWPCBe ready for a power cut
Torch, batteries, charged phone, and a plan for medical devices that need power.
Ready.govDo not rely only on GPS
Satellite navigation and radio can be wrong or drop out for a while.
Ready.gov
Before, during, after. Here it is “after”.
Before · When a storm is forecast
Charge what matters
Phones and power banks.
Medicines and devices
Ask your doctor how to store medicines and run devices without power.
Ready.gov (FEMA)
During · During the storm
Save electricity
If authorities ask, to avoid rolling blackouts.
Ready.gov (FEMA)
After · After a long power cut
Check the food
Throw away what stayed above 4 °C for more than two hours.
Ready.gov (FEMA)
If a life is in danger
Call your local emergency number
Questions people ask
Is a solar storm dangerous for my health?
No, not on the ground. It concerns power grids, satellites, radio and, at high latitudes, aircraft crews. Source: NOAA Space Weather Prediction Center.
Will I see the northern lights?
In strong storms the aurora can be seen far from the poles. Look north (south in the southern hemisphere) on a dark, clear night.