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Prediction for CME (2024-10-24T03:48:00-CME-001)

CME Observed Time: 2024-10-24T03:48Z
iSWAS Layout URL: https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/34152/-1
CME Note: Partial halo CME visible to the SE in SOHO LASCO C2/C3 and STEREO A COR2. The source is an X3.3 flare starting at 2024-10-24T03:30Z from AR 3869 (approx. S17E68). Brightening and post eruptive arcades are observed in SDO AIA 131/171/193/335, EUV wave seen in SDO AIA 193, and opening field lines are best seen in SDO AIA 171/193. The eruption is also seen from STEREO A EUV 195/304. Arrival signature is characterized by an amplification of magnetic field components with Btotal increasing from 15nt to 22nt. A subsequent increase in solar wind speed was observed from 385 km/s to 511 km/s at 16:09Z, with an increase in temperature observed as well. The signature was preceded by a prior enhancement in solar wind parameters, most notably magnetic field components, associated with IPS: 2024-10-26T11:35Z.
CME Shock Arrival Time: 2024-10-26T15:34Z
Observed Geomagnetic Storm Parameters due to CME:
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Predicted Arrival Time: 2024-10-26T04:00Z (-12.0h, +12.0h)
Confidence that the CME will arrive: 30.0%
Predicted geomagnetic storm max Kp range due to CME: 4.0 - 6.0
Prediction Method: Other (SIDC)
Prediction Method Note:

#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 41024
SIDC SOLAR BULLETIN 24 Oct 2024, 1230UT
SIDC FORECAST
SOLAR FLARES  : M-class flares expected (probability >=50%) 
GEOMAGNETISM  : Quiet (A<20 and K<4) 
SOLAR PROTONS : Quiet 
PREDICTIONS FOR 24 Oct 2024  10CM FLUX: 187 / AP: 017 
PREDICTIONS FOR 25 Oct 2024  10CM FLUX: 189 / AP: 007 
PREDICTIONS FOR 26 Oct 2024  10CM FLUX: 191 / AP: 037

Coronal mass ejections: A fast halo coronal mass ejection (CME) was observed in SOHO/LASCO-C2 coronagraph data starting at around 03:48 UTC on October 24. The CME is directed primarily to the southeast from Earth's perspective and is associated with the X3.3 flare from NOAA AR 3869, along with Type II and Type IV radio emissions detected at 03:46 UTC on October 24. The CME has an estimated velocity exceeding 1300 km/s. While the bulk of the ejecta is expected to miss Earth, a glancing blow could potentially arrive on October 26. No other Earth-directed coronal mass ejections (CMEs) have been detected in the available coronagraph imagery.

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Lead Time: 50.42 hour(s)
Difference: 11.57 hour(s)
Prediction submitted by Tony Iampietro (M2M SWAO) on 2024-10-24T13:09Z

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