Space Environment Prediction Center





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	Coronal Hole 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. There were two active regions on the visible disk, with no C-class and above flares produced. The solar wind speed decreased slowly to about 360 km/s. The geomagnetic field was quiet.
	Published:	2018-05-26 00:15 UTC
	Forecaster:	029/010

Within the next three days, solar activity is expected to be very low. The geomagnetic field will be mainly quiet.
	Published:	2018-05-26 00:15 UTC
	Forecaster:	029/010

During last week, solar activity was low on 23 May, and very low for the rest of the time. There were 3 active regions on the visible disk (Region 2710-2712), with one C-class flares produced on 23 May. The F10.7 index increased from 69 sfu to 74 sfu. The geomagnetic field was quiet to unsettled.
	Published:	2018-05-25 01:15 UTC
	Forecaster:	026/029

Within the next week, solar activity is expected to be very low to low. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2018-05-25 01:15 UTC
	Forecaster:	026/029

ALERTS


	No space environment alerts have been issued today.


	01:15 UTC 18 May 2018	00:15 UTC 17 May 2018	01:15 UTC 16 May 2018	01:15 UTC 15 May 2018	01:15 UTC 14 May 2018

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:B1.9
	Peak Time:2018 May 25 23:35 UTC

	Updated:2018 May 26 21:40 UTC
	>>more data<<


	Current 5-min:1.400e-1 /cm².sr.s
	24-hr Max:6.090e-1 /cm².sr.s

	Updated:2018 May 26 21:30 UTC
	>>more data<<


	Speed:347 km/sec
	Density:9.9 protons/cm³

	Updated:2018 May 26 21:39 UTC
	>>more data<<


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

	Updated:2018 May 26 21:00 UTC
	>>more data<<


	Current 5-min:2.780e+2 /cm².sr.s
	Integral Flux:1.148e+7 /cm².sr.day

	Updated:2018 May 26 21:30 UTC
	>>more data<<


	10.7cm Flux:76 sfu

	Update:2018 May 25 UTC
	>>more data<<


	SSN:32

	Update:2018 May 25 UTC
	>>more data<<