AR2665 returns, Coronal hole faces Earth

Tuesday, 1 August 2017 - 11:51 UTC

AR2665 returns, Coronal hole faces Earth

Old sunspot region 2665 which caused a couple of large far side eruptions is now rotating back onto the earth-facing solar disk.

A couple of smaller sunspots are visible right now and solar activity has picked up with B and C-class activity. How will the region look like when it has fully rotated into view and is it still capable of producing major solar flares? We will soon find out!

Sunspot region 2665 returns. How many more spots are still hiding behind the limb? Image by NASA SDO.

Coronal hole faces Earth

A southern extension of the northern hemisphere polar coronal hole is facing Earth today. An enhanced solar wind stream from this coronal hole could arrive in about 3 days from now and cause enhanced geomagnetic conditions this next Friday, 4 August.

Current data suggest that it is not possible to see aurora now at middle latitudes
G2 - Moderate geomagnetic storm
Observed Kp: 6
The solar wind speed is currently moderately high (605.6 km/sec.)

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Today's space weather

Auroral activity Minor Severe
High latitude 25% 35%
Middle latitude 5% 1%
Predicted Kp max 4
Solar activity
M-class solar flare 25%
X-class solar flare 1%
Moon phase
New Moon


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