Viewing archive of Tuesday, 17 May 2016 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
36 -400B3.71C1.741

Sunspot regions

Region 12542

Number of
sunspots
Size Class Magn. Class Spot Location
1 -3 30 -80 HSX N11W90
HMIIF
HMIBC

Solar flares on this day

C1.62 B8.98

Region 12543

Number of
sunspots
Size Class Magn. Class Spot Location
1 -2 10 -20 HSX S05W91
HMIIF
HMIBC

Region 12544

Number of
sunspots
Size Class Magn. Class Spot Location
20 6 160 10 DAI N20W27
HMIIF
HMIBC

Solar flares on this day

B8.71 B5.86

Region 12545

Number of
sunspots
Size Class Magn. Class Spot Location
2 -2 20 -50 CRO S20W79
HMIIF
HMIBC

Region 12546

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 540 130 HHX S07E43
HMIIF
HMIBC

All times in UTC

<< Go to daily overview page

G2 - Moderate geomagnetic storm

Observed Kp: 6
Threshold reached: 20:16 UTC

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

Reykjavik
Tromsø
Kiruna
The solar wind speed is currently moderately high (597.9 km/sec.)
The strength of the interplanetary magnetic field is moderate (19.85nT), the direction is North (9.06nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-53nT)

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Latest alerts

20:30 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 20:08 UTC

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20:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:00 UTC

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18:00 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 17:00 UTC

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17:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 16:28 UTC

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14:15 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 13:58 UTC

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Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/26M1.0
Last geomagnetic storm2025/03/22Kp6- (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025135 -19.6
Last 30 days133.7 -19.9

This day in history*

Solar flares
12001M3.86
22000M3.34
32001M3.14
41998M2.37
52024M1.9
DstG
11976-226G4
21991-168G4
31988-154G3
41959-132G4
51990-111G2
*since 1994

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