Space Environment Prediction Center





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	Chinese Assimilation TEC Model

	Cosmic Ray
	Station K Indices
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	Coronal Hole Index
	Solar Active Regions
	F10.7 Index
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OVERVIEW & FORECAST

Daily Review
Day 1 To 3
Weekly Review
Weekly Forecast

During the past 24 hours, solar activity was moderate. Eight active sunspot regions were on the visible disk without M flare produced. The solar wind speed maintained at about 520 km/s. The geomagnetic field was at quiet to unsettled levels. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm level.
	Published:	2026-06-08 00:30 UTC
	Forecaster:	010/042

Within the next three days, solar activity is expected to be low to moderate with chances for M-class flares. Due to the effect of CME from 6 Jun, the geomagnetic field is expected to reach major storm levels on 8 Jun, minor storm levels on 9 Jun, and be mainly quiet to unsettled on 10 Jun.
	Published:	2026-06-08 00:30 UTC
	Forecaster:	010/042

During the last week, solar activity was high on 3 Jun, moderate on 29 May and 2 Jun, and low on the other days. Fourteen sunspot active regions (AR4444, AR4446-AR4447, AR4449, AR4452, AR4454-AR4462) were on the visible disk with one X1.0 and six M-class flares produced. No solar proton event occurred. The F10.7 index ranged from 132 sfu to 148 sfu. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak value of about 550km/s, and the geomagnetic field was at active levels for 12 hours on 29-31 May. It was quiet to unsettled for the rest of the time.
	Published:	2026-06-05 06:30 UTC
	Forecaster:	027/022

Within the next week, solar activity is expected to be low to moderate with a chance for M-class flares. Due to the effects of multiple CMEs on 3 Jun, the geomagnetic field is expected to reach storm levels on 5-6 Jun. It is expected to be quiet to unsettled for the rest of the time.
	Published:	2026-06-05 06:30 UTC
	Forecaster:	027/022

ALERTS


	No space environment alerts have been issued today.


	01:15 UTC 08 Jun 2026	13:28 UTC 06 Jun 2026	22:00 UTC 05 Jun 2026	19:00 UTC 05 Jun 2026	16:00 UTC 05 Jun 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:C7.2
	Peak Time:2026 Jun 08 02:49 UTC

	Updated:2026 Jun 08 02:50 UTC
	>>more data<<


	Current 5-min:2.364e-1 /cm².sr.s
	24-hr Max:7.544e-1 /cm².sr.s

	Updated:2026 Jun 08 02:45 UTC
	>>more data<<


	Speed:496.4 km/sec
	Density:1.2 protons/cm³

	Updated:2026 Jun 08 02:49 UTC
	>>more data<<


	Current:Kp=2
	24-hr Max:Kp=3

	Updated:2026 Jun 08 00:00 UTC
	>>more data<<


	Current 5-min:8.011e+2 /cm².sr.s
	Integral Flux:1.036e+8 /cm².sr.day

	Updated:2026 Jun 08 02:45 UTC
	>>more data<<


	10.7cm Flux:134 sfu

	Update:2026 Jun 07 UTC
	>>more data<<


	SSN:124

	Update:2026 Jun 07 UTC
	>>more data<<