Viewing archive of Saturday, 18 May 2013 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
146 -520B6.86C8.626

Sunspot regions

Region 11743

Number of
sunspots
Size Class Magn. Class Spot Location
2 -4 30 -50 DAO N22W53
HMIIF
HMIBC

Solar flares on this day

C1.69

Region 11744

Number of
sunspots
Size Class Magn. Class Spot Location
23 5 100 -20 DAO N06W40
HMIIF
HMIBC

Region 11745

Number of
sunspots
Size Class Magn. Class Spot Location
10 -10 300 -50 CKO N13W15
HMIIF
HMIBC

Region 11746

Number of
sunspots
Size Class Magn. Class Spot Location
7 -3 160 -70 CSO S27W14
HMIIF
HMIBC

Region 11747

Number of
sunspots
Size Class Magn. Class Spot Location
10 80 -20 DAO S17W17
HMIIF
HMIBC

Region 11748

Number of
sunspots
Size Class Magn. Class Spot Location
24 5 220 -50 DAI N12E23
HMIIF
HMIBC

Solar flares on this day

C8.6 C1.62

Region 11749

Number of
sunspots
Size Class Magn. Class Spot Location
4 -2 30 20 CRO S22W66
HMIIF
HMIBC

Region 11750

Number of
sunspots
Size Class Magn. Class Spot Location
9 1 50 -40 CAO S09W41
HMIIF
HMIBC

Region 11751

Number of
sunspots
Size Class Magn. Class Spot Location
2 -4 0 -10 AXX S23W01
HMIIF
HMIBC

Region 11752

Number of
sunspots
Size Class Magn. Class Spot Location
7 -2 20 -10 CRO N18W40
HMIIF
HMIBC

Solar flares on this day

C1.87

All times in UTC

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
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 202689.7 +3.8
Last 30 days94.1 +33.7

This day in history*

Solar flares
12022X1.1
22022M4.4
32002M3.79
42001M1.97
52022M1.89
DstG
11994-201G4
21990-113G2
32002-98G3
41999-91G3
52015-79G1
*since 1994

Aurora on this day in history

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