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. The solar wind speed reached maxmimum of 785 km/s. The geomagnetic field reached active levels for 3 hours, and quiet to unsettled levels for the rest of time.
	Published:	2017-07-22 00:09 UTC
	Forecaster:	029/021

Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to reach active levels on 22 Jul due to the recurrent coronal hole high speed stream, and to be quiet to unsettled on 23-24 Jul.
	Published:	2017-07-22 00:09 UTC
	Forecaster:	029/021

During last week, solar activity was moderate on 14 Jul, low for rest of the time. There were three active regions on the visible disk, AR2665 ~ AR2667, produced 16 C-class flares and one M-class flare. The M2.4 flare was followed by a halo coronal mass ejection. Due to the influence of the flare, the greater than 10 MeV proton flux at geosynchronous orbit reached solar proton event levels in 5:00UTC on 14 Jul, with a peak value of 22 pfu. This event ended on 15 Jul. The F10.7 index decreased from 94 sfu to 70 sfu. Due to the effects of the CME, the solar wind reached the maxmium of 640 km/s, and the geomagnetic field was at moderate storm levels for 9 hours and minor storm levels for 9 hours and active levels for 15 hours on 16-17 Jul. It was quiet to unsettled levels for rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 17-20 Jul.
	Published:	2017-07-21 01:20 UTC
	Forecaster:	012/037

Within the next week, solar activity is expected to be low. The geomagnetic field is expected to reach active levels on 21-22 Jul due to the effect of a recurrent coronal hole high speed stream. The geomagnetic field is expected to be quiet to unsettled for rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit is expected to maintain at minor storm levels on 21 Jul.
	Published:	2017-07-21 01:20 UTC
	Forecaster:	012/037

ALERTS


	Space environment alerts have been issued today.


	10:00 UTC 22 Jul 2017	00:15 UTC 21 Jul 2017	01:15 UTC 20 Jul 2017	01:15 UTC 19 Jul 2017	01:15 UTC 18 Jul 2017

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:A6.5
	Peak Time:2017 Jul 22 16:04 UTC

	Updated:2017 Jul 22 19:34 UTC
	>>more data<<


	Current 5-min:1.450e-1 /cm².sr.s
	24-hr Max:4.440e-1 /cm².sr.s

	Updated:2017 Jul 22 19:15 UTC
	>>more data<<


	Speed:580.9 km/sec
	Density:5.5 protons/cm³

	Updated:2017 Jul 22 20:26 UTC
	>>more data<<


	Current:Kp=2
	24-hr Max:Kp=5

	Updated:2017 Jul 22 18:00 UTC
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	Current 5-min:2.180e+3 /cm².sr.s
	Integral Flux:8.200e+7 /cm².sr.day

	Updated:2017 Jul 22 19:15 UTC
	>>more data<<


	10.7cm Flux:69 sfu

	Update:2017 Jul 21 UTC
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	SSN:0

	Update:2017 Jul 21 UTC
	>>more data<<