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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 or above flares produced. Solar wind speed decreased to about 310 km/s. The geomagnetic field was quiet.
	Published:	2026-07-19 00:30 UTC
	Forecaster:	039/022

Within the next three days, solar activity is expected to be mainly low with slight chance for M-class flares. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2026-07-19 00:30 UTC
	Forecaster:	039/022

During the last week, solar activity was moderate on 12 Jul, and low on other time. Eight sunspot active regions (AR4481-AR4482, AR4485, AR4487-AR4491) were on the visible disk with one M1.1 flare produced. No solar proton event occurred. The F10.7 index decreased from 112 sfu to 100 sfu. Due to the persistent effects of the recurrent coronal hole high speed stream, the solar wind speed reached a peak value of about 660 km/s and the geomagnetic field was at active levels for 3 hours. Due to the effect of the CME produced on 9 Jul and 10 Jul, the solar wind speed reached a peak value of about 580 km/s and the geomagnetic field was at minor storm level for 3 hours and active levels for 9 hours. Due to the effect of the CME produced on 11 Jul, the geomagnetic field reached active levels for 3 hours on 15 Jul . 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 11-12 Jul.
	Published:	2026-07-17 06:30 UTC
	Forecaster:	040/012

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 to minor storm levels on 21 and 22 Jul due to the effect of the recurrent coronal hole high speed stream. It will be quiet to unsettled for the rest of the time.
	Published:	2026-07-17 06:30 UTC
	Forecaster:	040/012

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:C1.6
	Peak Time:2026 Jul 18 16:15 UTC

	Updated:2026 Jul 19 06:50 UTC
	>>more data<<


	Current 5-min:2.108e-1 /cm².sr.s
	24-hr Max:3.400e-1 /cm².sr.s

	Updated:2026 Jul 19 06:45 UTC
	>>more data<<


	Speed:334.23 km/sec
	Density:1.0 protons/cm³

	Updated:2026 Jul 19 06:48 UTC
	>>more data<<


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

	Updated:2026 Jul 19 06:00 UTC
	>>more data<<


	Current 5-min:3.854e+2 /cm².sr.s
	Integral Flux:5.216e+7 /cm².sr.day

	Updated:2026 Jul 19 06:45 UTC
	>>more data<<


	10.7cm Flux:110 sfu

	Update:2026 Jul 18 UTC
	>>more data<<


	SSN:24

	Update:2026 Jul 18 UTC
	>>more data<<