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 with 18 C-class flares produced. The largest flare was C8.5. There were 5 sunspot regions on the visible disk. The solar wind speed decreased to about 330 km/s. The geomagnetic field was at quiet levels.
	Published:	2021-10-28 00:30 UTC
	Forecaster:	027/010

Within the next three days, solar activity is expected to be low to moderate with a chance for M-class flares.The geomagnetic field is expected to be quiet to unsettled.
	Published:	2021-10-28 00:30 UTC
	Forecaster:	027/010

During last week, solar activity was very low. Two sunspot regions (AR2882 and AR2886) were on the visible disk and without C-class and above flare produced. The F10.7 index was between 76 sfu and 84 sfu. Due to the effects of CME and coronal hole high speed stream, the geomagnetic field was at active levels for 15 hours on 17-19 Oct and at quiet to unsettled levels for the rest of time.
	Published:	2021-10-22 06:30 UTC
	Forecaster:	010/012

Within next week, solar activity is expected to be very low to low. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2021-10-22 06:30 UTC
	Forecaster:	010/012

ALERTS


	No space environment alerts have been issued today.


	16:01 UTC 26 Oct 2021	01:53 UTC 26 Oct 2021	10:00 UTC 12 Oct 2021	04:00 UTC 12 Oct 2021	01:00 UTC 12 Oct 2021

LATEST DATA



		The active region magnetogram is created from the raw full-disk longitudinal magnetogram data observed at Huairou Solar Observatory Station of Beijing in China.				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.

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		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.				The Ionosphere GPS observation network , monitoring the ionospheric scintillation and GPS-TEC with time resolutions of 1 minute and 30 seconds, is located at Fuzhou, Xiamen, Guangzhou, Nanning and Hainan.

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	24-hr Max:C8.5
	Peak Time:2021 Oct 27 06:08 UTC

	Updated:2021 Oct 28 04:47 UTC
	>>more data<<


	Current 5-min:4.537e-1 /cm².sr.s
	24-hr Max:7.347e-1 /cm².sr.s

	Updated:2021 Oct 28 04:40 UTC
	>>more data<<


	Speed:313.6 km/sec
	Density:5.8 protons/cm³

	Updated:2021 Oct 28 04:46 UTC
	>>more data<<


	Current:Kp=0
	24-hr Max:Kp=1

	Updated:2021 Oct 28 03:00 UTC
	>>more data<<


	Current 5-min:0.000e+0 /cm².sr.s
	Integral Flux:1.492e+6 /cm².sr.day

	Updated:2021 Oct 28 04:40 UTC
	>>more data<<


	10.7cm Flux:111 sfu

	Update:2021 Oct 27 UTC
	>>more data<<


	SSN:95

	Update:2021 Oct 26 UTC
	>>more data<<