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 very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed increased to about 340 km/s. The geomagnetic field was quiet to unsettled.
	Published:	2019-09-21 23:58 UTC
	Forecaster:	035/012

Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to reach active levels on 23 Sep due to the recurrent coronal hole high speed stream. It will be quiet to unsettled during other periods.
	Published:	2019-09-21 23:58 UTC
	Forecaster:	035/012

During last week, solar activity was very low. There was no active region on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 66 sfu to 69 sfu. Due to the continuous effect of a coronal hole high speed stream, the solar wind speed reached a peak of about 520 km/s on 13 Sep. Due to the effect of another coronal hole high speed stream, the solar wind speed reached a peak of about 480 km/s on 15 Sep and the geomagnetic field reached active levels for 12 hours on 16-17 Sep. The geomagentic field was quiet to unsettled during other periods. The greater than 2 MeV electron flux at geosynchronous orbit maintained at minor storm levels on 14-15 Sep.
	Published:	2019-09-20 03:52 UTC
	Forecaster:	039

Within the next week, solar activity is expected to be very low. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach isolated active levels on 23-24 Sep. It will be quiet to unsettled during other periods.
	Published:	2019-09-20 03:52 UTC
	Forecaster:	039

ALERTS


	No space environment alerts have been issued today.


	01:15 UTC 16 Sep 2019	00:15 UTC 15 Sep 2019	01:15 UTC 13 Sep 2019	01:15 UTC 12 Sep 2019	01:15 UTC 11 Sep 2019

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:A7.1
	Peak Time:2019 Sep 21 23:27 UTC

	Updated:2019 Sep 22 19:14 UTC
	>>more data<<


	Current 5-min:2.320e-1 /cm².sr.s
	24-hr Max:5.310e-1 /cm².sr.s

	Updated:2019 Sep 22 19:05 UTC
	>>more data<<


	Speed:323.8 km/sec
	Density:2.5 protons/cm³

	Updated:2019 Sep 22 19:10 UTC
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	Current:Kp=1
	24-hr Max:Kp=2

	Updated:2019 Sep 22 18:00 UTC
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	Current 5-min:2.450e+1 /cm².sr.s
	Integral Flux:1.635e+6 /cm².sr.day

	Updated:2019 Sep 22 19:05 UTC
	>>more data<<


	10.7cm Flux:68 sfu

	Update:2019 Sep 21 UTC
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	SSN:0

	Update:2019 Sep 21 UTC
	>>more data<<