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OVERVIEW & FORECAST

Daily Review
Day 1 To 3
Weekly Review
Weekly Forecast

During the past 24 hours, solar activity was low. Four sunspot active regions were on the visible disk without any M-class and above flare produced. The solar wind speed decreased to about 340 km/s. The geomagnetic field was quiet.
	Published:	2026-05-13 00:30 UTC
	Forecaster:	042/039

Within the next three days, solar activity is expected to be low to moderate with chances for M-class flares. The geomagnetic field will be mainly at quiet to unsettled levels with isolated active periods during 13-14 May. It will reach storm levels on 15 May due to the effect of recurrent coronal hole high speed stream.
	Published:	2026-05-13 00:30 UTC
	Forecaster:	042/039

During the last week, solar activity was moderate on 4 and 7 May and low on the other days. Twelve sunspot active regions (AR4420, AR4423-AR4425, AR4428-4435) were on the visible disk with two M-class flares produced. No solar proton event occurred. The F10.7 index ranged from 117 sfu to 159 sfu. Due to the continuous effect of a recurrent coronal hole high speed stream, the solar wind speed reached about 520km/s and the geomagnetic field reached active levels for six hours on 1 May. Due to the effect of a CME, the solar wind speed reached a peak of about 450km/s and the geomagnetic field reached moderate storm levels for 3 hours, minor storm levels for 6 hours, active levels for 3 hours during 4-5 May. It was quiet to unsettled for the rest of the time.
	Published:	2026-05-08 06:30 UTC
	Forecaster:	022/042

Within the next week, solar activity is expected to be low to moderate with a chance for M-class above flares. The geomagnetic field is expected to be mainly quiet to unsettled. It is expected to reach isolated active levels on 8 May due to the effect of a recurrent coronal hole high speed stream.
	Published:	2026-05-08 06:30 UTC
	Forecaster:	022/042

ALERTS


	No space environment alerts have been issued today.


	14:02 UTC 10 May 2026	14:39 UTC 07 May 2026	01:00 UTC 05 May 2026	22:00 UTC 04 May 2026	19:00 UTC 04 May 2026

LATEST DATA



		The magnetic map of the activity area is generated based on the full day longitudinal magnetic field data of the Huairou Solar Observatory in Beijing.				This full-disk Hα image of sun is observed with the 20cm Full-Disc Hα Telescope located at Huairou Solar Observatory Station of Beijing in China.



		Observatories of cosmic ray in SEPC include Beijing station monitoring Neutron intensity variations and Guangzhou station monitoring the intensity variations of East, West, South, North and Vertical components of muon.				This model is an improved geomagnetic K-index current reporting model based on the evaluation of Takahashi, a commonly used international Kp index current reporting model, and its application to Chinese geomagnetic stations.

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	24-hr Max:C2.3
	Peak Time:2026 May 13 06:40 UTC

	Updated:2026 May 13 17:32 UTC
	>>more data<<


	Current 5-min:1.871e-1 /cm².sr.s
	24-hr Max:3.460e-1 /cm².sr.s

	Updated:2026 May 13 17:25 UTC
	>>more data<<


	Speed:482.1 km/sec
	Density:4.1 protons/cm³

	Updated:2026 May 13 17:33 UTC
	>>more data<<


	Current:Kp=3
	24-hr Max:Kp=3

	Updated:2026 May 13 15:00 UTC
	>>more data<<


	Current 5-min:7.987e+1 /cm².sr.s
	Integral Flux:1.851e+7 /cm².sr.day

	Updated:2026 May 13 17:25 UTC
	>>more data<<


	10.7cm Flux:111 sfu

	Update:2026 May 12 UTC
	>>more data<<


	SSN:58

	Update:2026 May 12 UTC
	>>more data<<