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. There was no active region on the visible disk, without C-class and above flares produced. The solar wind speed maintained at about 350 km/s. The geomagnetic field was quiet.
	Published:	2019-04-22 00:06 UTC
	Forecaster:	010/035

Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be mainly quiet on 22 Apr and will reach isolated active levels on 23-24 Apr due to the effect of a recurrent coronal hole high speed stream.
	Published:	2019-04-22 00:06 UTC
	Forecaster:	010/035

During last week, solar activity was very low. There were two active regions (AR2738 and AR2739) on the visible disk, without C class and above flares produced. The F10.7 index ranged from 74 sfu to 78 sfu. Due to the effect of a weak coronal hole high speed stream, the solar wind speed reached the peak of about 460 km/s on 12-13 Apr. The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 13-14 Apr.
	Published:	2019-04-19 00:18 UTC
	Forecaster:	021

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 active levels on 23-25 Apr. It will be mainly quiet to unsettled for the rest of time.
	Published:	2019-04-19 00:18 UTC
	Forecaster:	021

ALERTS


	No space environment alerts have been issued today.


	01:15 UTC 15 Apr 2019	00:15 UTC 14 Apr 2019	01:15 UTC 10 Apr 2019	01:15 UTC 09 Apr 2019	01:15 UTC 08 Apr 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:B1.0
	Peak Time:2019 Apr 21 07:58 UTC

	Updated:2019 Apr 22 05:08 UTC
	>>more data<<


	Current 5-min:2.560e-1 /cm².sr.s
	24-hr Max:5.280e-1 /cm².sr.s

	Updated:2019 Apr 22 05:00 UTC
	>>more data<<


	Speed:351.5 km/sec
	Density:3.6 protons/cm³

	Updated:2019 Apr 22 04:57 UTC
	>>more data<<


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

	Updated:2019 Apr 22 03:00 UTC
	>>more data<<


	Current 5-min:1.100e+1 /cm².sr.s
	Integral Flux:7.653e+6 /cm².sr.day

	Updated:2019 Apr 22 05:00 UTC
	>>more data<<


	10.7cm Flux:69 sfu

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


	SSN:0

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