Viewing archive of Saturday, 17 July 2021 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum flux
53 181A5.38B7.88

Sunspot regions

Region 12842

Number of
sunspots
Size Class Magn. Class Spot Location
5 4 40 20 CSO N26W15
HMIIF
HMIBC

Solar flares on this day

B7.8 B1.2 B1.1 B1.3 B1.2

Region 12843

Number of
sunspots
Size Class Magn. Class Spot Location
1 -2 10 -20 AXX S18W86
HMIIF
HMIBC

Solar flares on this day

B2.0 B2.6

Region 12844

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 -10 AXX S43E49
HMIIF
HMIBC

Region 12845

Number of
sunspots
Size Class Magn. Class Spot Location
6 30 BXI S15W06
HMIIF
HMIBC

Solar flares on this day

B1.3 B4.2 B4.5 B2.2 B1.7 B1.6

All times in UTC

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Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Sodankylä, Utsjoki
Kirkenes, Tromsø
Murmansk
Kiruna

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Nuuk
Tórshavn
Oulu, Rovaniemi, Kuopio
Reykjavik
Trondheim
Arkhangelsk, Norilsk, Vorkuta
Luleå, Sundsvall, Umeå

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Last X-flare2025/01/04X1.85
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Last geomagnetic storm2025/01/04Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2024154.5 +2
January 2025137.6 -16.9
Last 30 days152.2 +35.1

This day in history*

Solar flares
12002M6.38
22023M4.6
31999M4.39
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52015M3.19
DstG
11967-160G4
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*since 1994

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