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 moderate. Five sunspot regions were on the visible disk with one M-class and several C-class flares produced. The solar wind speed reached a peak of about 670 km/s. Due to the effect of the coronal high speed stream and CMEs, the geomagnetic field reached minor storm levels for 3 hours, active levels for 6 hours and quiet to unsettled levels for the rest time.
	Published:	2022-08-20 00:30 UTC
	Forecaster:	040/026

Within the next three days, solar activity is expected to be low to moderate with a chance for M-class flares. The geomagnetic field is expected to reach isolated storm levels on 20 Aug due to the effect of the coronal high speed stream and CMEs. It will be quiet to unsettled for the rest time.The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 20-22 Aug.
	Published:	2022-08-20 00:30 UTC
	Forecaster:	040/026

During the last week, solar activity was high on 16 Aug and moderate on 15 Aug and 17-18 Aug. Twelve active sunspot regions (AR3071, AR3074-AR3084) were on the visible disk with 10 M-class and 100 C-class flares produced. The F10.7 index fluctuated between 117 sfu and 131 sfu. Due to the effects of the coronal hole high speed stream and CMEs, the solar wind speed reached a peak value of about 550 km/s on 17 Aug, and the geomagnetic field was at moderate storm levels for 6 hours and active levels for three hours. The solar wind speed mantained at about 600 km/s on 18 Aug, the geomagnetic field was minor storm levels for 9 hours and active levels for 3 hours. The geomagnetic field was at quiet to unsettled levels for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 12-17 Aug.
	Published:	2022-08-19 06:30 UTC
	Forecaster:	040

Within the next week, solar activity is expected to be low to moderate with a chance for M-class flares. The geomagnetic field is expected to reach isolated storm levels on 19-20 Aug due to the effect of the coronal high speed stream and CMEs. It will be quiet to unsettled for the rest time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 21-25 Aug.
	Published:	2022-08-19 06:30 UTC
	Forecaster:	040

ALERTS


	Space environment alerts have been issued today.


	19:00 UTC 19 Aug 2022	04:17 UTC 19 Aug 2022	22:00 UTC 18 Aug 2022	16:00 UTC 18 Aug 2022	14:17 UTC 18 Aug 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:M1.6
	Peak Time:2022 Aug 19 04:44 UTC

	Updated:2022 Aug 20 04:26 UTC
	>>more data<<


	Current 5-min:3.737e-1 /cm².sr.s
	24-hr Max:5.664e-1 /cm².sr.s

	Updated:2022 Aug 20 04:20 UTC
	>>more data<<


	Speed:601.7 km/sec
	Density:8.8 protons/cm³

	Updated:2022 Aug 20 04:24 UTC
	>>more data<<


	Current:Kp=4
	24-hr Max:Kp=5

	Updated:2022 Aug 20 03:00 UTC
	>>more data<<


	Current 5-min:3.141e+2 /cm².sr.s
	Integral Flux:5.450e+7 /cm².sr.day

	Updated:2022 Aug 20 04:20 UTC
	>>more data<<


	10.7cm Flux:105 sfu

	Update:2022 Aug 19 UTC
	>>more data<<


	SSN:83

	Update:2022 Aug 18 UTC
	>>more data<<