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. Seven active sunspot regions were on the visble disk without M-class flare produced. Due to the continuous effect of the recurrent coronal hole high speed stream, the solar wind speed increased to about 730 km/s. The geomagnetic field reached minor storm levels for 3 hours, active levels for 21 hours.
	Published:	2025-10-13 00:30 UTC
	Forecaster:	039/041

Within the next three days, solar activity is expected to be low to moderate. The geomagnetic field is expected to reach active levels on 13-14 Oct due to the continuous effect of the recurrent coronal hole high speed stream. Due to the effect of CME from 11 Oct, it will reach active levels on 15 Oct. The greater than 2 MeV electron flux at geosynchronous orbit will reach active level on 14-15 Oct.
	Published:	2025-10-13 00:30 UTC
	Forecaster:	039/041

During the last week, solar activity was moderate on 3 Oct and 9 Oct, and low for the rest of the time. Fifteen active sunspot regions (AR4230, AR4232-4233, AR4235-4236, AR4238, AR4241-4249) were on the visible disk with 3 M-class flares produced. No solar proton event occurred. The F10.7 index decreased from 170 sfu to 120 sfu. Due to the effects of the recurrent coronal hole high speed stream, the solar wind speed reached a peak value of 800 km/s during 3-4 Oct, and the geomagnetic field reached minor storm levels for 6 hours and active levels for 27 hours. Due to the effect of the CME on 3 Oct, the solar wind speed reached a peak value of 450 km/s during 7-8 Oct, and the geomagnetic field reached active levels for 6 hours. The geomagnetic field was at quiet to unsettled levels for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 3-5 Oct, 7-9 Oct and reached moderate storm levels on 6 Oct.
	Published:	2025-10-10 06:30 UTC
	Forecaster:	016/027

Within the next week, solar activity is expected to be mainly low with a chance for M-class flares. The geomagnetic field is expected to reach storm levels on 11-13 Oct due to the effect of the recurrent coronal hole high speed stream. It will be quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach minor storm levels on 14-16 Oct.
	Published:	2025-10-10 06:30 UTC
	Forecaster:	016/027

ALERTS


	Space environment alerts have been issued today.


	13:40 UTC 13 Oct 2025	08:32 UTC 13 Oct 2025	05:44 UTC 13 Oct 2025	04:00 UTC 13 Oct 2025	01:00 UTC 13 Oct 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:M2.7
	Peak Time:2025 Oct 13 09:19 UTC

	Updated:2025 Oct 13 14:40 UTC
	>>more data<<


	Current 5-min:1.948e-1 /cm².sr.s
	24-hr Max:2.867e-1 /cm².sr.s

	Updated:2025 Oct 13 14:35 UTC
	>>more data<<


	Speed:672.6 km/sec
	Density:1.6 protons/cm³

	Updated:2025 Oct 13 14:41 UTC
	>>more data<<


	Current:Kp=4
	24-hr Max:Kp=5

	Updated:2025 Oct 13 12:00 UTC
	>>more data<<


	Current 5-min:3.052e+3 /cm².sr.s
	Integral Flux:8.175e+7 /cm².sr.day

	Updated:2025 Oct 13 14:35 UTC
	>>more data<<


	10.7cm Flux:143 sfu

	Update:2025 Oct 12 UTC
	>>more data<<


	SSN:125

	Update:2025 Oct 12 UTC
	>>more data<<