Viewing archive of Thursday, 23 December 2021 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
143 60 -2B8.04C2.6915

Sunspot regions

Region 12907

Number of
sunspots
Size Class Magn. Class Spot Location
17 3 300 70 EKI S20W64
HMIIF
HMIBC

Solar flares on this day

C1.4 C1.1 C1.1 C1.7 C2.6 C2.0 C2.1 C2.7 C1.4 C1.1 C1.0 C1.1 C1.2 C1.1 C1.2 C1.3

Region 12908

Number of
sunspots
Size Class Magn. Class Spot Location
10 -6 100 CAI S20W53
HMIIF
HMIBC

Region 12909

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 50 -20 HAX S21W40
HMIIF
HMIBC

Region 12911

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX N20W26
HMIIF
HMIBC

Region 12912

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 -10 HRX S13E13
HMIIF
HMIBC

Region 12915

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 30 CRO N16E08
HMIIF
HMIBC

Region 12916

Number of
sunspots
Size Class Magn. Class Spot Location
7 4 190 -50 DSO S16E55
HMIIF
HMIBC

Region 12917

Number of
sunspots
Size Class Magn. Class Spot Location
7 5 30 20 CRO S27E16
HMIIF
HMIBC

Solar flares on this day

C1.4 C1.9

Region 12918

Number of
sunspots
Size Class Magn. Class Spot Location
6 2 80 60 DAO N20E38
HMIIF
HMIBC

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

Whitehorse, YT
Fairbanks, AK

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

Edmonton, AB, Gillam, MB, Saskatoon, SK, Yellowknife, NT
Anchorage, AK, Juneau, AK, Utqiagvik, AK
The strength of the interplanetary magnetic field is moderate (10.1nT), the direction is slightly South (-8.61nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-64nT)

S1 - Minor solar radiation storm

Minor impacts on HF radio through polar regions

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04:03 UTC - Hemispheric Power Index

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Minor R1 radio blackout in progress (≥M1 - current: M1.45)


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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.4
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
April 2025147 -7.6
Last 30 days128.8 -21.8

This day in history*

Solar flares
12001X28.5
22001X2.01
32001X1.59
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52017M8.22
DstG
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*since 1994

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