Space Environment Prediction Center





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	Kp Model
	GEO relativistic electron flux
	Chinese Assimilation TEC Model

	Cosmic Ray
	Station K Indices
	Ionosphere

	Coronal Hole Index
	Solar Active Regions
	F10.7 Index
	Ap Index

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 1 sunspot region on the visible disk. The solar wind speed reached a peak of about 413 km/s. The geomagnetic field was at minor storm levels for 3 hours, and quiet to unsettled levels for the rest of time.
	Published:	2021-04-16 00:20 UTC
	Forecaster:	029/010

Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be active to isolated minor storm levels on 16-18 Apr due to the effect of recurrent coronal hole high speed streams.
	Published:	2021-04-16 00:20 UTC
	Forecaster:	029/010

During last week, solar activity was very low. There was one sunspot region on the visible disk (AR2814), Without C-class and above flares produced. The F10.7 index fluctuated between 70 sfu to 83 sfu. Due to the effect of the partial halo CME on 10 Apr, the solar wind speed reached a peak of about 460 km/s and the geomagnetic field was at minor storm levels for 3 hours and active levels for 3 hours on 14-15 Apr. It was quiet to unsettled for the rest of time.
	Published:	2021-04-16 04:24 UTC
	Forecaster:	010/029

Within next week, solar activity is expected to be mainly very low. Due to the effect of recurrent coronal hole high speed stream, the geomagnetic field is expected to reach active to isolated minor storm levels on 16-18 Apr. It will be quiet to unsettled for the rest of time.
	Published:	2021-04-16 04:24 UTC
	Forecaster:	010/029

ALERTS


	Space environment alerts have been issued today.


	07:00 UTC 15 Apr 2021	15:00 UTC 07 Apr 2021	01:15 UTC 25 Mar 2021	01:00 UTC 25 Mar 2021	01:15 UTC 24 Mar 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:B1.4
	Peak Time:2021 Apr 15 15:30 UTC

	Updated:2021 Apr 16 07:17 UTC
	>>more data<<


	Current 5-min:5.407e-1 /cm².sr.s
	24-hr Max:7.010e-1 /cm².sr.s

	Updated:2021 Apr 16 07:10 UTC
	>>more data<<


	Speed:417.6 km/sec
	Density:8.0 protons/cm³

	Updated:2021 Apr 16 07:27 UTC
	>>more data<<


	Current:Kp=3
	24-hr Max:Kp=5

	Updated:2021 Apr 16 06:00 UTC
	>>more data<<


	Current 5-min:4.000e+0 /cm².sr.s
	Integral Flux:1.299e+6 /cm².sr.day

	Updated:2021 Apr 16 07:10 UTC
	>>more data<<


	10.7cm Flux:72 sfu

	Update:2021 Apr 15 UTC
	>>more data<<


	SSN:22

	Update:2021 Apr 15 UTC
	>>more data<<