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. There were two sunspot active regions 2778 and 2779 on the visible disk, producing multiple C-class flares. The solar wind speed decreased to about 430 km/s. The geomagnetic field reached active levels for 3 hours. The greater than 2 MeV electron flux at geosynchronous orbit remained at minor storm levels.
	Published:	2020-10-30 00:19 UTC
	Forecaster:	029/026

Within the next three days, solar activity is expected to be low. Due to the effect of CME produced on 27 Oct, the geomagnetic field is expected to reach isolated active levels on 31 Oct and to be quiet to unsettled for the rest of time. The greater than 2 MeV electron flux at geosynchronous orbit is expected to maintain at minor storm levels.
	Published:	2020-10-30 00:19 UTC
	Forecaster:	029/026

During last week, solar activity was very low on 23-26 Oct and low on 27-29 Oct. There were three active sunspots regions 2776, 2778 and 2779 on the visible disk. The areas of regions 2778 and 2779 were big and both produced several C-class flares. The F10.7 index increased from 73 sfu to 88 sfu. Due to the effects of several recurrent coronal hole high speed streams, the solar wind speed reached the maximum of 600 km/s and the IMF Bz reached the maximum of -10nT. The geomagnetic field reached active levels for 33 hours and was at quiet to unsettled levels for the rest of time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 25-29 Oct.
	Published:	2020-10-30 00:56 UTC
	Forecaster:	029/026

Within the next week, solar activity is expected to be very low to low. Due to the effect of CME produced on 27 Oct, the geomagnetic field is expected to reach isolated active levels on 31 Oct. Due to the effect of the Solar Sector Boundary Crossing, the geomagnetic field is expected to reach isolated active levels on 2-3 Nov. The greater than 2 MeV electron flux at geosynchronous orbit is expected to maintained at minor storm levels on 30 Oct - 2 Nov.
	Published:	2020-10-30 00:56 UTC
	Forecaster:	029/026

ALERTS


	Space environment alerts have been issued today.


	01:15 UTC 30 Oct 2020	00:15 UTC 29 Oct 2020	01:15 UTC 28 Oct 2020	01:15 UTC 27 Oct 2020	01:15 UTC 26 Oct 2020

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:C1.5
	Peak Time:2020 Oct 29 20:16 UTC

	Updated:2020 Oct 30 12:54 UTC
	>>more data<<


	Current 5-min:4.458e-1 /cm².sr.s
	24-hr Max:6.921e-1 /cm².sr.s

	Updated:2020 Oct 30 12:45 UTC
	>>more data<<


	Speed:419.9 km/sec
	Density:4.0 protons/cm³

	Updated:2020 Oct 30 12:57 UTC
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	Current:Kp=1
	24-hr Max:Kp=4

	Updated:2020 Oct 30 12:00 UTC
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	Current 5-min:5.880e+3 /cm².sr.s
	Integral Flux:5.105e+8 /cm².sr.day

	Updated:2020 Oct 30 12:45 UTC
	>>more data<<


	10.7cm Flux:85 sfu

	Update:2020 Oct 29 UTC
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	SSN:35

	Update:2020 Oct 29 UTC
	>>more data<<