Space Environment Prediction Center





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	Chinese Assimilation TEC Model

	Cosmic Ray
	Station K Indices
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	Coronal Hole Index
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	F10.7 Index
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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 with several C-class flares produced. Due to the continuous effect of the recurrent coronal hole high speed stream, the solar wind speed increased to a peak of about 650 km/s. The geomagnetic field was quiet to unsettled.
	Published:	2023-03-27 00:30 UTC
	Forecaster:	041/039

Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2023-03-27 00:30 UTC
	Forecaster:	041/039

During the last week, solar activity was moderate on 17 and 20 Mar and was low for the rest of time. Eleven active sunspot regions (AR3247, AR3251-3252, AR3254, AR3256-3262) were on the visible disk with 2 M-Class flares and 29 C-Class solar flares produced. The F10.7 index was between 137 sfu and 159 sfu. The geomagnetic field reached active levels for 6 hours on 20 Mar. Due to the effects of coronal hole high speed stream, the solar wind speed reached a peak of about 550 km/s, and the geomagnetic field reached active levels for 9 hours on 22 Mar. Due to the effects of CMEs on 20 Mar, the solar wind speed maintained at about 460 km/s, and the geomagnetic field reached major storm levels for 6 hours, moderate storm levels for 3 hours, minor storm levels for 3 hours and active levels for 6 hours during 23 Mar. It was quiet to unsettled levels for the rest of the time.
	Published:	2023-03-24 06:30 UTC
	Forecaster:	027/040

Within the next three days, solar activity is expected to be mainly low. Due to the effects of recurrent coronal hole high speed stream and CMEs on 20 Mar, the geomagnetic field is expected to reach major storm levels on 24 Mar, minor or moderate storm levels on 25 Mar, and active to minor storm levels on 26-27 Mar and quiet to unsettled levels for the rest of the time.
	Published:	2023-03-24 06:30 UTC
	Forecaster:	027/040

ALERTS


	No space environment alerts have been issued today.


	19:00 UTC 24 Mar 2023	06:00 UTC 24 Mar 2023	04:00 UTC 24 Mar 2023	01:00 UTC 24 Mar 2023	22:00 UTC 23 Mar 2023

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:C4.6
	Peak Time:2023 Mar 27 06:36 UTC

	Updated:2023 Mar 27 08:09 UTC
	>>more data<<


	Current 5-min:2.425e-1 /cm².sr.s
	24-hr Max:4.128e-1 /cm².sr.s

	Updated:2023 Mar 27 08:05 UTC
	>>more data<<


	Speed:462.4 km/sec
	Density:0.1 protons/cm³

	Updated:2023 Mar 27 08:10 UTC
	>>more data<<


	Current:Kp=1
	24-hr Max:Kp=3

	Updated:2023 Mar 27 06:00 UTC
	>>more data<<


	Current 5-min:9.459e+2 /cm².sr.s
	Integral Flux:5.596e+7 /cm².sr.day

	Updated:2023 Mar 27 08:05 UTC
	>>more data<<


	10.7cm Flux:159 sfu

	Update:2023 Mar 26 UTC
	>>more data<<


	SSN:125

	Update:2023 Mar 26 UTC
	>>more data<<