Space Environment Prediction Center





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	Kp Model
	GEO relativistic electron flux
	Chinese Assimilation TEC Model

	Cosmic Ray
	Station K Indices
	Ionosphere

	Coronal Hole Index
	Solar Active Regions
	F10.7 Index
	Ap Index

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, and no C-class and above flares produced. The solar wind speed maintained at about 400 km/s. The geomagnetic field was quiet to unsettled.
	Published:	2019-05-21 00:05 UTC
	Forecaster:	026/021

Within the next three days, solar activity is expected to be very low. The geomagnetic field will be quiet to unsettled on 21-22 May and quiet on 23 May.
	Published:	2019-05-21 00:05 UTC
	Forecaster:	026/021

During last week, solar activity was very low to low. There were two active regions (AR2740 and AR2741) on the visible disk. Region 2741 produced several CMEs on 10-13 May and a C2-class flare on 15 May. The F10.7 index ranged from 74 sfu to 78 sfu. Due to the arrival of the coronal mass ejection, the solar wind speed maintained at 350 km/s and the maximum southward component of Bz reached -11 nT, and the geomagnetic field reached minor storm levels for 3 hours, and active level for 15 hours on 11 May. Due to the effect of CMEs produced on 10 and 11 May, the solar wind speed reached a peak of 570 km/s. The geomagnetic field was at major storm levels for 3 hours, moderate storm levels for 3 hours and active levels for 6 hours on 14 May. The geomagnetic field was quiet to unsettled at the rest time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 12 May and 13 May.
	Published:	2019-05-17 02:09 UTC
	Forecaster:	039/012

Within the next week, solar activity is expected to be very low to low. Due to the effect of CMEs produced on 12 May and 13 May, the geomagnetic field is expected to reach minor storm levels on 17 May. It will be quiet to unsettled on rest of the other time.
	Published:	2019-05-17 02:09 UTC
	Forecaster:	039/012

ALERTS


	No space environment alerts have been issued today.


	07:00 UTC 14 May 2019	03:00 UTC 14 May 2019	01:15 UTC 14 May 2019	01:15 UTC 13 May 2019	01:00 UTC 11 May 2019

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:A8.9
	Peak Time:2019 May 21 05:37 UTC

	Updated:2019 May 21 17:00 UTC
	>>more data<<


	Current 5-min:1.680e-1 /cm².sr.s
	24-hr Max:4.960e-1 /cm².sr.s

	Updated:2019 May 21 16:55 UTC
	>>more data<<


	Speed:376.2 km/sec
	Density:2.9 protons/cm³

	Updated:2019 May 21 17:02 UTC
	>>more data<<


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

	Updated:2019 May 21 15:00 UTC
	>>more data<<


	Current 5-min:8.760e+1 /cm².sr.s
	Integral Flux:3.315e+6 /cm².sr.day

	Updated:2019 May 21 16:55 UTC
	>>more data<<


	10.7cm Flux:69 sfu

	Update:2019 May 20 UTC
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	SSN:0

	Update:2019 May 20 UTC
	>>more data<<