Space Environment Prediction Center





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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. Two active sunspot regions were on the visible disk without M-class and above flare produced. Solar wind speed reached a peak of 507 km/s. The geomagnetic field was active for 3 hours, and was quiet to unsettled for the rest of the time.
	Published:	2026-07-16 00:30 UTC
	Forecaster:	015/040

Within the next three days, solar activity is expected to be mainly low with a slight chance for M-class flares. The geomagnetic field was at active levels for 3 hours and quiet to unsettled for the rest of the time.
	Published:	2026-07-16 00:30 UTC
	Forecaster:	015/040

During the last week, solar activity was high on 3-5 Jul, moderate on 7-9 Jul, and low on 6 Jul. Ten sunspot active regions (AR4478-AR4487) were on the visible disk with one X1.3 flare and 33 M-Class flares produced. No solar proton event occurred. The F10.7 index decreased from 187 sfu to 110 sfu. Due to the effects of the three CMEs produced on 30 Jun and 1 Jul, the solar wind speed reached a peak value of about 650 km/s and IMF Bz decreased to about -20 nT between 3 Jul and 5 Jul, during which the geomagnetic field was at major storm levels for 3 hours, moderate storm levels for 12 hours, minor storm level for 9 hours and active levels for 12 hours. The geomagnetic field was quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 7 Jul.
	Published:	2026-07-10 06:30 UTC
	Forecaster:	039/022

Within the next week, solar activity is expected to be low to moderate with chances for M-class flares. The geomagnetic field is expected to reach active levels for isolated time periods on 10 and 11 Jul due to the persistent effects of the recurrent coronal hole high speed stream. Minor geomagnetic storm level is expected on 12-13 Jul as the arrvial of the CME produced on 9 Jul. It will be quiet to unsettled for the rest of the time.
	Published:	2026-07-10 06:30 UTC
	Forecaster:	039/022

ALERTS


	No space environment alerts have been issued today.


	01:15 UTC 13 Jul 2026	12:00 UTC 12 Jul 2026	08:42 UTC 12 Jul 2026	01:15 UTC 12 Jul 2026	02:29 UTC 09 Jul 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:C8.9
	Peak Time:2026 Jul 15 21:55 UTC

	Updated:2026 Jul 16 20:56 UTC
	>>more data<<


	Current 5-min:1.880e-1 /cm².sr.s
	24-hr Max:2.942e-1 /cm².sr.s

	Updated:2026 Jul 16 20:50 UTC
	>>more data<<


	Speed:412.6 km/sec
	Density:2.6 protons/cm³

	Updated:2026 Jul 16 20:54 UTC
	>>more data<<


	Current:Kp=1
	24-hr Max:Kp=3

	Updated:2026 Jul 16 18:00 UTC
	>>more data<<


	Current 5-min:1.549e+3 /cm².sr.s
	Integral Flux:2.747e+7 /cm².sr.day

	Updated:2026 Jul 16 20:50 UTC
	>>more data<<


	10.7cm Flux:100 sfu

	Update:2026 Jul 15 UTC
	>>more data<<


	SSN:25

	Update:2026 Jul 15 UTC
	>>more data<<