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OVERVIEW & FORECAST

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Day 1 To 3
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Weekly Forecast

During the past 24 hours, solar activity was low. Four active sunspot regions were on the visble disk without any M-Class or above flares produced. The solar wind speed increased to about 430 km/s, the geomagnetic field was quiet to unsettled.
	Published:	2025-11-21 00:30 UTC
	Forecaster:	042/012

Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to reach isolated active levels on 21 Nov due to the effects of a coronal hole high speed stream. It will be quiet to unsettled for the rest of the time.
	Published:	2025-11-21 00:30 UTC
	Forecaster:	042/012

During the last week, solar activity was high on 14 Nov, moderate on 16 Nov and low for the rest of time. Fourteen sunspot active regions (AR4274-AR4277, AR4279-AR4288) were on the visible disk with one X4.0-class flare and three M-class flares produced. The greater than 10 MeV proton flux at geosynchronous orbit reached the level of a minor solar proton event at 09:20 and ended at 13:25 with the maximum proton flux reaching 17 pfu on 14 Nov. Due to the effects of the CME on 14 Nov and the recurrent coronal hole high speed stream, the solar wind speed reached a peak value of 550 km/s on 16-17 Nov, and the geomagnetic field reached active levels for 12 hours. The geomagnetic field was at quiet to unsettled levels for the rest of the time.
	Published:	2025-11-21 06:30 UTC
	Forecaster:	042/012

Within the next week, solar activity is expected to be low to moderate with little chance for M-class flares. The geomagnetic field is expected to be mainly at quiet to unsettled levels with isolated active levels on 21 Nov and active to storm levels on 25-27 Nov due to the effect of the recurrent coronal hole high speed stream.
	Published:	2025-11-21 06:30 UTC
	Forecaster:	042/012

ALERTS


	No space environment alerts have been issued today.


	08:32 UTC 16 Nov 2025	20:34 UTC 14 Nov 2025	20:16 UTC 14 Nov 2025	09:20 UTC 14 Nov 2025	08:41 UTC 14 Nov 2025

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:2025 Nov 20 10:04 UTC

	Updated:2025 Nov 21 08:35 UTC
	>>more data<<


	Current 5-min:2.321e-1 /cm².sr.s
	24-hr Max:4.216e-1 /cm².sr.s

	Updated:2025 Nov 21 08:30 UTC
	>>more data<<


	Speed:440.7 km/sec
	Density:5.7 protons/cm³

	Updated:2025 Nov 21 08:44 UTC
	>>more data<<


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

	Updated:2025 Nov 21 06:00 UTC
	>>more data<<


	Current 5-min:1.612e+2 /cm².sr.s
	Integral Flux:7.574e+7 /cm².sr.day

	Updated:2025 Nov 21 08:30 UTC
	>>more data<<


	10.7cm Flux:121 sfu

	Update:2025 Nov 20 UTC
	>>more data<<


	SSN:51

	Update:2025 Nov 20 UTC
	>>more data<<