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 low. Nine sunspot regions were on the visible disk. Region 3014 decreased to 890 solar area units with Beta-Gamma-Delta type. The solar wind speed maintained at about 500km/s. The geomagnetic field was at active levels for three hours, and at quiet to unsettled levels for the rest time.
	Published:	2022-05-23 00:30 UTC
	Forecaster:	021/012

Within the next three days, solar activity is expected to be low to moderate, with possibility of producing M-Class and above flares. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2022-05-23 00:30 UTC
	Forecaster:	021/012

During the last week, solar activity was at low levels on 13-14 and 17 May, moderate levels on 15-16 and 18 May, and high levels on 19 May. Thirteen active sunspot regions were on the visible disk (AR3006-3008, AR3010-3019) with 6 M-Class and 58 C-Class flares produced. Region 3014 increased to 1100 sunspot unit areas with Beta-Gamma-Delta type. The F10.7 index ranged between 150 sfu to 180 sfu. Due to the effects of the coronal hole high speed stream, the solar wind speed increased to about 570 km/s on 15 May, the geomagnetic field reached active levels for 6 hours. The geomagnetic field was at quiet to unsettled levels during the other time..
	Published:	2022-05-20 06:30 UTC
	Forecaster:	012/041

Within next week, solar activity is expected to be mainly moderate with a large chance for M-Class and above level flares. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2022-05-20 06:30 UTC
	Forecaster:	012/041

ALERTS


	No space environment alerts have been issued today.


	07:47 UTC 20 May 2022	14:22 UTC 19 May 2022	10:19 UTC 19 May 2022	07:30 UTC 19 May 2022	22:07 UTC 18 May 2022

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:C5.2
	Peak Time:2022 May 23 11:05 UTC

	Updated:2022 May 23 20:07 UTC
	>>more data<<


	Current 5-min:3.434e-1 /cm².sr.s
	24-hr Max:5.990e-1 /cm².sr.s

	Updated:2022 May 23 20:00 UTC
	>>more data<<


	Speed:470.1 km/sec
	Density:8.6 protons/cm³

	Updated:2022 May 23 20:05 UTC
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	Current:Kp=1
	24-hr Max:Kp=3

	Updated:2022 May 23 18:00 UTC
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	Current 5-min:8.326e+2 /cm².sr.s
	Integral Flux:4.146e+7 /cm².sr.day

	Updated:2022 May 23 20:00 UTC
	>>more data<<


	10.7cm Flux:165 sfu

	Update:2022 May 22 UTC
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	SSN:138

	Update:2022 May 22 UTC
	>>more data<<