Viewing archive of Thursday, 17 September 2015 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxCM
72 50B4.14M1.63152

Sunspot regions

Region 12414

Number of
sunspots
Size Class Magn. Class Spot Location
1 -3 120 -50 HSX S12W84
HMIIF
HMIBC

Region 12415

Number of
sunspots
Size Class Magn. Class Spot Location
20 4 190 40 DAC S20W02
HMIIF
HMIBC

Solar flares on this day

C3.41 M1.37 C7.12 C4.21 C2.01 M1.63 B9.02 C1.09 C1.18 C1.83 C4.65 C2.28 C4.76 C9.51 C1.11 C5.56

Region 12418

Number of
sunspots
Size Class Magn. Class Spot Location
1 250 50 HHX S16E30
HMIIF
HMIBC

Region 12419

Number of
sunspots
Size Class Magn. Class Spot Location
5 120 110 DAO N12E35
HMIIF
HMIBC

All times in UTC

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The solar wind speed is currently moderately high (519.7 km/sec.)
The strength of the interplanetary magnetic field is moderate (11.48nT), the direction is moderately South (-11.26nT).
A southern hemisphere coronal hole was detected in an earth-facing position on Tuesday, 8 April 2025

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06:30 UTC - Type II Radio Emission

Begin Time: 08/04/2025 05:53 UTC Estimated Velocity: 456km/sec.


05:15 UTC - Hemispheric Power Index

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00:55 UTC - Coronal hole

A southern hemisphere coronal hole is facing Earth. Enhanced solar wind could arrive in ~3 days

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Monday, 7 April 2025
20:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 20:39 UTC

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/05M1.0
Last geomagnetic storm2025/04/06Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025151.3 +17.1
Last 30 days135.2 -4.5

This day in history*

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12000M2.97
22023M2.9
32000M2.66
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DstG
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*since 1994

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