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Prediction for CME (2023-08-05T07:12:00-CME-001)

CME Observed Time: 2023-08-05T07:12Z
iSWAS Layout URL: https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/26352/-1
CME Note: Wide CME seen W and S in SOHO and STEREO A associated with long duration M1.6-class solar flare/filament eruption near S10W68. Faint shock presents as a full halo with preference towards the west. Around 2023-08-05T06:45Z, a dark filament near the western portion of the disk is seen lifting off, becoming a bright structure as it leaves the disk towards the west. A somewhat unclear arrival signature, affected by low quality solar wind data from both DSCOVR and ACE during this time period. Arrival signature: initial increase in B_total from 7.4 nT to 10.5 nT, followed by another increase to 13.6 nT at 11:54Z. The signature looks like a messy sheath arrival and it is possible that there is a flux rope/magnetic cloud at ~2023-08-08T01Z but this could be another CME arrival (LASSOS team). The current arrival may also have been observed at STEREO A around 2023-08-07T08:46Z. Alternatively, this could be the combined arrival of 2023-08-04T04:17Z and 2023-08-04T04:49Z CMEs.
CME Shock Arrival Time: 2023-08-07T11:07Z
Observed Geomagnetic Storm Parameters due to CME:
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Predicted Arrival Time: 2023-08-08T12:00Z (-12.0h, +12.0h)
Confidence that the CME will arrive: 75.0%
Predicted geomagnetic storm max Kp range due to CME: 3.0 - 6.0
Prediction Method: Other (SIDC)
Prediction Method Note:
:Issued: 2023 Aug 05 1652 UTC
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# FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium)         #
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A partial halo Coronal Mass Ejection (CME) has been seen in SOHO/LASCO-C2 images at 07:12 UTC today. This partial halo CME is associated with a GOES M1.6 flare from NOAA Active Region (AR) 3386 and the filament eruption below the same AR region. This halo CME has a projected angular width of about 120 degrees and a projected speed of about 1000 km/s. Earth directed component of CME has been identified. Further analysis is on-going to estimate the arrival time of potential glancing blow of this CME.
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# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
Lead Time: 36.52 hour(s)
Difference: -24.88 hour(s)
Prediction submitted by Mary Aronne (M2M Office) on 2023-08-05T22:36Z
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