SOHO/LASCO Partial Halo CME 20160211

Halo Alert: halo-message.20160211

Subject: SOHO/LASCO Partial HALO CME 160211

UCMEO 93001 60212 1945/
60211 62048 80422 1691/ 100// 113// 40669
60211 62021 82124 40711 12497 1112/
99999

PLAIN

SOHO/LASCO Partial HALO CME February 11, 2016

C2 Start Time:      20:48 UT

C3 Start Time:      21:54 - 04:22 UT dissipates ~24Rsun

Type of CME:
Partial HALO CME — FRONTSIDE
pa1: 169 pa2: 100 Total Width: 291 degrees

Velocity Measurements:

C2 5 point   791.3 km/sec @ PA 326
C3 7 points 656.6 km/sec @ PA 326
Average through both fields:    668.6 km/sec Acceleration -13.17 m/sec^2.

Update: COR2-A: 21:39 - 01:54 UT partial HALO
                Velocity: 8 points 529.5 km/sec @ PA 318

COMMENT:    AIA 193 shows a long duration flare of AR12497 20:21-21:24 UT at
                          location [N11, W07]. A wave is seen and dimming propagates East
                          and West of the region followed by a bright loop arcade.

                          AIA 304 shows eruptive cooler material West of AR12947 centered
                          at location [N08, W21] beginning approximately 20:42 UT.

Velocity measurements were taken at PA 326 along the LE of the flarefront.

NOAA/GOES reports a Long Duration C8.9 class X-ray flare of AR12497 20:18/21:03/21:28UT.

Preliminary UCMEO velocity and position measurements will be delivered first.

Best regards,

Kevin Schenk
Solar Heliospheric Observatory
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA

BT

[Images from original message are omitted here]

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