Space Environment Prediction Center





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	Chinese Assimilation TEC Model

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	Station K Indices
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	Coronal Hole Index
	Solar Active Regions
	F10.7 Index
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OVERVIEW & FORECAST

Daily Review
Day 1 To 3
Weekly Review
Weekly Forecast

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no sunspot region on the visible disk. The solar wind speed decreased to about 410 km/s. The geomagnetic field was at quiet levels.
	Published:	2021-08-01 00:14 UTC
	Forecaster:	039/040

Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2021-08-01 00:14 UTC
	Forecaster:	039/040

During last week, solar activity was very low to low. There were four sunspot regions (AR2846-AR2849) on the visible disk with one C-class flare produced. The F10.7 index decreased from 87 sfu to 76 sfu. Due to the effect of a coronal hole high speed stream, the solar wind speed reached a peak of about 540 km/s and the geomagnetic field was at active levels for 3 hours on 28 Jul. It was quiet to unsettled for the rest of time.
	Published:	2021-07-30 01:14 UTC
	Forecaster:	012/010

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:	2021-07-30 01:14 UTC
	Forecaster:	012/010

ALERTS


	No space environment alerts have been issued today.


	05:14 UTC 04 Jul 2021	16:14 UTC 03 Jul 2021	14:33 UTC 03 Jul 2021	07:21 UTC 03 Jul 2021	01:15 UTC 22 Jun 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:B2.4
	Peak Time:2021 Jul 31 17:48 UTC

	Updated:2021 Aug 01 13:35 UTC
	>>more data<<


	Current 5-min:6.634e-1 /cm².sr.s
	24-hr Max:6.634e-1 /cm².sr.s

	Updated:2021 Aug 01 13:30 UTC
	>>more data<<


	Speed:397.8 km/sec
	Density:4.4 protons/cm³

	Updated:2021 Aug 01 13:36 UTC
	>>more data<<


	Current:Kp=1
	24-hr Max:Kp=2

	Updated:2021 Aug 01 12:00 UTC
	>>more data<<


	Current 5-min:4.000e+0 /cm².sr.s
	Integral Flux:1.204e+7 /cm².sr.day

	Updated:2021 Aug 01 13:30 UTC
	>>more data<<


	10.7cm Flux:76 sfu

	Update:2021 Jul 31 UTC
	>>more data<<


	SSN:0

	Update:2021 Jul 31 UTC
	>>more data<<