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Prediction for CME (2024-06-29T16:12:00-CME-001)

CME Observed Time: 2024-06-29T16:12Z
iSWAS Layout URL: https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/31755/-1
CME Note: Wide CME visible to the SW in SOHO LASCO C2/C3 and S/SW in STEREO A COR2. The source is a large filament eruption spanning from S30E10 to S20W40. Liftoff seen starting at about 2024-06-29T15:09Z in SDO AIA 304. Dimming and post-eruptive arcades are visible in SDO AIA 193. Opening field lines are visible in SDO AIA 171. The eruption is also visible in STEREO A EUV 195/304 after a data gap from 2024-06-29T13:05Z to 2024-06-29T17:25Z. || Possible arrival signature: The first of a series of complex arrival signatures seen at L1. A very small increase in B-total from 3nT to 4.6nT is seen starting at 2024-07-02T23:41Z, with corresponding rotation of B-field components. B-total begins to steadily increase over the next several hours until reaching a peak value of 6.41nT at 2024-07-03T15:30Z. A corresponding steady rotation of B-field components progresses over several hours until 2024-07-03T15:30Z. Temperature steadily decreases from about 80 K at 2024-07-02T22:38Z to about 50 K at 2024-07-02T23:41Z. Density remains very low, around 2cc, until 2024-07-03T15:30Z. This arrival is currently suspected to be the combined arrival of the filament eruption CME:2024-06-29T16:12Z and the glancing blow arrival of CME:2024-06-29T04:00Z.
CME Shock Arrival Time: 2024-07-02T23:41Z
Observed Geomagnetic Storm Parameters due to CME:
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Predicted Arrival Time: 2024-07-03T00:00Z (-12.0h, +12.0h)
Confidence that the CME will arrive: 80.0%
Prediction Method: WSA-ENLIL + Cone (Met Office)
Prediction Method Note:

Met Office ENLIL settings.
ENLIL version: 2.7
Resolution: medium-res (512x60x180) (X1=0.1-1.7/uniform X2=30.-150./uniform X3=0.-360./uniform)
Ambient settings: a3b2-sa1
WSA version: 4.5
GONG: mrzqs
Note that this arrival time forecast is based on the simulation but is then adjusted by a human-in-the-loop.

Please specify following CME input parameters.
Time at 21.5Rs boundary: 2024-06-29T20:10Z
Radial velocity (km/s): 780
Longitude (deg): 22W
Latitude (deg): 35S
Half-angular width (deg): 38

Notes: Significant uncertainty in timing
Space weather advisor: Rebecca Spalton

Lead Time: 56.43 hour(s)
Difference: -0.32 hour(s)
Prediction submitted by Met Office (Met Office) on 2024-06-30T15:15Z

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