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Strong M7.3 solar flare erupted from southwest limb

strong-m7-3-solar-flare-erupted-from-southwest-limb

Departing region 2173 erupted with strong M7.3 solar flare at 19:01 UTC on October 2, 2014. The event started at 18:49 and ended at 19:14 UTC.

Due to the location of this region Earth directed Coronal Mass Ejection (CME) is not expected. SWPC forecasters estimate 45% chance for M-class, and 05% chance for X-class solar flare in next two days.

A Type II (713 km/s) and IV radio emissions were associated with the event. Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong CMEs and solar radiation storms.

At 17:44 UTC today this region erupted with moderate solar flare measuring M1.5. 

Space Weather Message Code: SUMXM5
Serial Number: 121
Issue Time: 2014 Oct 02 2013 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2014 Oct 02 1849 UTC
Maximum Time: 2014 Oct 02 1901 UTC
End Time: 2014 Oct 02 1914 UTC
X-ray Class: M7.3
Optical Class: 1f
Location: S17W82
NOAA Scale: R2 – Moderate
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio – Limited blackout of HF (high frequency) radio communication for tens of minutes.

***

Space Weather Message Code: ALTTP2
Serial Number: 965
Issue Time: 2014 Oct 02 2011 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Oct 02 1931 UTC
Estimated Velocity: 449 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

***

Space Weather Message Code: ALTTP2
Serial Number: 964
Issue Time: 2014 Oct 02 1928 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Oct 02 1858 UTC
Estimated Velocity: 713 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

***

Space Weather Message Code: ALTTP4
Serial Number: 482
Issue Time: 2014 Oct 02 1928 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Oct 02 1859 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

***

Earlier in a day Solar Dynamics Observatory (SDO) captured a prominence eruption off the east limb. Although that event generated a CME, it was directed away from our planet.

Sunspots

There are currently 9 numbered sunspot regions on the disk.

Sunspots on October 2, 2014. Image credit: ESA PROBA2/SWAP

2172 – Beta-Gamma
2173 – Beta-Gamma
2175 – Beta-Gamma
2176 – Beta
2177 – Beta-Gamma
2178 – Beta-Gamma
2179 – Alpha
2180 – Beta
2181 – Beta

Featured image: NASA SDO / AIA 304 at 19:04 UTC.

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