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Solar Dynamics Observatory (SDO)

The NASA Solar Dynamics Observatory (SDO) mission consists of one sun observing spacecraft with three instruments which is located in a geosynchronous orbit around Earth. The AIA and HMI instruments provide us with solar imagery of unprecedented detail. Below you will find numerous images of the Sun from these instruments in many different wavelengths, revealing many different solar phenomena like solar flares, coronal holes, sunspots and filaments. The numbers on the images below indicate the location of different sunspot groups. If there are no numbers then the Sun is currently devoid of numbered sunspot regions.

HMI Intensitygram

HMI Intensitygram Flattened

HMIIF (4096x4096) HMIIF (3072x3072) HMIIF (2048x2048) HMIIF (1024x1024) HMIIF (512x512)
HMII (4096x4096) HMII (3072x3072) HMII (2048x2048) HMII (1024x1024) HMII (512x512)
HMIIC (4096x4096) HMIIC (3072x3072) HMIIC (2048x2048) HMIIC (1024x1024) HMIIC (512x512)
48 hours HMIIF (1024x1024) 48 hours HMIIF (512x512)
48 hours HMII (1024x1024) 48 hours HMII (512x512)
48 hours HMIIC (1024x1024) 48 hours HMIIC (512x512)

HMI Magnetogram

HMI Colorized Magnetogram

HMIBC (4096x4096) HMIBC (3072x3072) HMIBC (2048x2048) HMIBC (1024x1024) HMIBC (512x512)
HMIB (4096x4096) HMIB (3072x3072) HMIB (2048x2048) HMIB (1024x1024) HMIB (512x512)
48 hours HMIBC (1024x1024) 48 hours HMIBC (512x512)
48 hours HMIB (1024x1024) 48 hours HMIB (512x512)

AIA 094

AIA Wavelength 094

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

AIA 131

AIA Wavelength 131

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512) 48 hours High Cadence (1024x1024) 48 hours High Cadence (512x512)

AIA 171

AIA Wavelength 171

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512) 48 hours High Cadence (1024x1024) 48 hours High Cadence (512x512)

AIA 193

AIA Wavelength 193

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512) 48 hours High Cadence (1024x1024) 48 hours High Cadence (512x512)
48 hours Difference (1024x1024) 48 hours Difference (512x512)

AIA 211

AIA Wavelength 211

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

AIA 304

AIA Wavelength 304

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096px PFSS 2048px PFSS 1024px PFSS 512px PFSS
48 hours (1024x1024) 48 hours (512x512) 48 hours High Cadence (1024x1024) 48 hours High Cadence (512x512)

AIA 335

AIA Wavelength 335

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

AIA 1600

AIA Wavelength 1600

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

AIA 1700

AIA Wavelength 1700

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

AIA 094 335 193

AIA Composite 094 - 335 - 193

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

AIA 304 211 171

AIA Composite 304 - 211 - 171

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
48 hours (1024x1024) 48 hours (512x512)

HMI Magnetogram AIA 171

AIA Composite 211 - 193 - 171

4096x4096 3072x3072 2048x2048 1024x1024 512x512
4096x4096 PFSS 2048x2048 PFSS 1024x1024 PFSS 512x512 PFSS
Courtesy of SDO (NASA) and the AIA, EVE, and HMI science teams.
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The density of the solar wind is moderate (24.27 p/cm3)
The strength of the interplanetary magnetic field is moderate (15.54nT), the direction is North (1.46nT).

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Latest alerts

03:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 02:59 UTC

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Tuesday, 25 March 2025
20:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 20:19 UTC

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13:00 UTC - Type II Radio Emission

Begin Time: 25/03/2025 12:36 UTC Estimated Velocity: 516km/sec.

Monday, 24 March 2025
Coronal hole faces Earth

The anticipated strong G3 geomagnetic storm watch never materialized as the coronal mass ejection that was supposed to arrive early yesterday didn't arrive until today just past midnight UTC. The impact was very lackluster with the Bt (total strength of the IMF) increasing to a moderate 15nT at best and the solar wind speed reaching just 420km/s. A far cry from the anticipated 700 to 800km/s. That once again goes to show how hard it is to forecast space weather events and any resulting geomagnetic conditions. We remain under the influence of the CME and high latitude sky watchers should remain alert for some nice aurora displays but middle latitude sky watchers will probably have to wait for the next opportunity. 

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13:55 UTC - Coronal hole

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

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Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/21M1.2
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

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32001M3.14
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DstG
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*since 1994

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