Long duration M6.5 solar flare erupted from Region 2027

Long duration M6.5 solar flare erupted from Region 2027

Strong, long duration, solar flare measuring M6.5 erupted from Region 2027 on April 2, 2014. The event started at 13:18, peaked at 14:05 and ended at 14:28 UTC.

A Type II and IV Radio Emission with estimated velocity of 903 km/h were observed beginning at 13:23 UTC. 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. 

A 10cm Radio Burst event with peak flux of 3700 sfu was observed from 13:41 to 14:07 UTC (lasting 26 minutes).

R2 - Moderate radio blackout was reported at 13:56 UTC. HF Radio: Limited blackout of HF radio communication on sunlit side, loss of radio contact for tens of minutes. Navigation: Degradation of low-frequency navigation signals for tens of minutes.

Region 2027 is located near the eastern limb - the CME should be directed mostly away from Earth.

Update: A partial halo coronal mass ejection (CME) was associated with this event. The CME was first observed in SOHO/LASCO C2 imagery at 02/13:36 UTC and had an estimated speed of 1622 km/s. The majority of the ejecta appeared to be directed off the NE limb, however further analysis will be accomplished as imagery becomes available. (SWPC)

Space Weather Message Code: ALTTP4
Serial Number: 455
Issue Time: 2014 Apr 02 1352 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Apr 02 1323 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.

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Space Weather Message Code: SUM10R
Serial Number: 614
Issue Time: 2014 Apr 02 1417 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2014 Apr 02 1341 UTC
Maximum Time: 2014 Apr 02 1357 UTC
End Time: 2014 Apr 02 1407 UTC
Duration: 26 minutes
Peak Flux: 3700 sfu
Latest Penticton Noon Flux: 153 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

***

Space Weather Message Code: ALTTP2
Serial Number: 921
Issue Time: 2014 Apr 02 1412 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Apr 02 1323 UTC
Estimated Velocity: 903 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: ALTXMF
Serial Number: 216
Issue Time: 2014 Apr 02 1356 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2014 Apr 02 1355 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.

Sunspots

There are currently 8 numbered sunpot regions on the Earth side of the Sun.

Sunspots on April 2, 2014. Image credit: NASA SDO/HMI

2014 S13W0* 176 150 4 CAO 3 B
2017 N10W78 149 10 2 AXX 2 A
2021 S14W05 76 220 7 DAI 18 BG
2022 N17E10 61 30 1 HSX 1 A
2026 S11E50 21 130 10 DAI 28 BG
2027 N13E55 16 100 3 HSX 1 A
2028 S08E62 9 30 5 DAO 3 B
2029 N18E42 29 20 1 HRX 1 A

Featured image: NASA SDO

Tags: m-class

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