Viewing archive of Sunday, 3 September 2017 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
96 251B4.71C1.643

Sunspot regions

Region 12672

Number of
sunspots
Size Class Magn. Class Spot Location
2 60 DAO N08W98

Solar flares on this day

C1.05

Region 12673

Number of
sunspots
Size Class Magn. Class Spot Location
4 3 60 -20 CSO S10E09
HMIIF
HMIBC

Solar flares on this day

C1.61

Region 12674

Number of
sunspots
Size Class Magn. Class Spot Location
18 3 810 40 FHC N14E25
HMIIF
HMIBC

Region 12675

Number of
sunspots
Size Class Magn. Class Spot Location
4 30 CRO S08W51
HMIIF
HMIBC

Region 12676

Number of
sunspots
Size Class Magn. Class Spot Location
5 20 BXO S10W36
HMIIF
HMIBC

All times in UTC

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/04M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026128.3 +42.3
Last 30 days98.2 +38.5

This day in history*

Solar flares
12001X8.08
22004M3.44
32023M3.01
42000M2.7
52006M2.02
DstG
12000-291G4
21977-105G3
31988-100G2
41984-86
52010-81G1
*since 1994

Aurora on this day in history

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