Space Environment Prediction Center





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	Daily Forecast
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	27-day Ap Forecast
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	Solar X-ray Flare
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	RelativisticElectronEnhancement
	GeoMagnetic Storm

	AE Model
	Dst Model
	Sudden Ionosphere Disturbance
	Magnetopause & Bow Shock
	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 were no active regions on the visible disk, without C-class and above flares produced. Due to a recurrent coronal hole high speed stream, the solar wind speed reached 570 km/s and the geomagnetic field reached minor storm level for 3 hours, and active levels for 15 hours.
	Published:	2018-09-23 00:06 UTC
	Forecaster:	029/010

Within the next three days, solar activity is expected to be very low. Due to another recurrent coronal hole high speed stream, the geomagnetic field will reach isolated minor storm levels on 23-24 Sep. The greater than 2 MeV electron flux at geosynchronous orbit will reach to minor storm level on 24-25 Sep.
	Published:	2018-09-23 00:06 UTC
	Forecaster:	029/010

During last week, solar activity was very low. There were no active regions on the visible disk, with no C class and above flares produced. The F10.7 index ranged from 67 sfu to 69 sfu. Due to the effects of the coronal hole high speed stream, the solar wind speed reached a peak of about 600 km/s on 14 Sep, and the geomagnetic field reached minor storm levels for 3 hours, active levels for 3 hours. The greater than 2 MeV electron flux at geosynchronous orbit reached moderate storm levels on 15-16 Sep and minor storm levels on 14,17-20 Sep.
	Published:	2018-09-21 01:24 UTC
	Forecaster:	035/026

Within the next week, solar activity is expected to be very low. Due to a recurrent coronal hole high speed stream, the geomagnetic field will reach isolated minor storm levels on 23-24 Sep. It will be mainly 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 on 21-22 Sep.
	Published:	2018-09-21 01:24 UTC
	Forecaster:	035/026

ALERTS


	No space environment alerts have been issued today.


	01:15 UTC 22 Sep 2018	00:00 UTC 22 Sep 2018	22:00 UTC 21 Sep 2018	01:15 UTC 21 Sep 2018	01:15 UTC 20 Sep 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:A1.7
	Peak Time:2018 Sep 22 15:01 UTC

	Updated:2018 Sep 23 05:15 UTC
	>>more data<<


	Current 5-min:1.600e-1 /cm².sr.s
	24-hr Max:5.020e-1 /cm².sr.s

	Updated:2018 Sep 23 05:10 UTC
	>>more data<<


	Speed:446.5 km/sec
	Density:5.3 protons/cm³

	Updated:2018 Sep 23 05:11 UTC
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	Current:Kp=4
	24-hr Max:Kp=4

	Updated:2018 Sep 23 03:00 UTC
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	Current 5-min:3.530e+2 /cm².sr.s
	Integral Flux:1.034e+8 /cm².sr.day

	Updated:2018 Sep 23 05:10 UTC
	>>more data<<


	10.7cm Flux:68 sfu

	Update:2018 Sep 22 UTC
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	SSN:0

	Update:2018 Sep 22 UTC
	>>more data<<