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Prediction for CME (2023-05-07T23:12:00-CME-001)

CME Observed Time: 2023-05-07T23:12Z
iSWAS Layout URL: https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/25001/-1
CME Note: This CME is visible as a partial halo to the NW in SOHO LASCO C2/C3 and STEREO A COR2 imagery. The source is likely an eruption and subsequent long duration M1.6 flare from AR 3296 starting around 2023-05-07T22:15Z in SDO AIA 131, 171, 193, 304 imagery. An opening of field lines is visible at the time of the eruption with post eruptive dimming and arcades visible starting around 23:45Z in SDO AIA 193 and STEREO A EUVI 195 imagery. The arrival signature at L1 is characterized by jumps in B_total to >15nT, solar wind speed to >550km/s, temperature >600K, and density >15 N(cm^-3). The CME might have arrived at STEREO A at 2023-05-09T19:00Z. From LASSOS team discussion: CME shock arrives on 6/9 and arrival signature ends ~2023-05-10T21:00Z. (It is possible that there are two close arrivals in this signature, with the second shock around 2023-05-10T05Z).
CME Shock Arrival Time: 2023-05-09T22:06Z
Observed Geomagnetic Storm Parameters due to CME:
Max Kp: 5.37

Predicted Arrival Time: 2023-05-09T17:32Z (-2.5h, +2.75h)
Confidence that the CME will arrive: 100.0%
Predicted geomagnetic storm max Kp range due to CME: 5.0 - 7.0
Prediction Method: Ensemble WSA-ENLIL + Cone (NASA M2M)
Prediction Method Note:
Ensemble modeling estimates the spread/uncertainty in CME arrival time predictions using the WSA-ENLIL+Cone model due to uncertainties in CME input parameters.  This is achieved by measuring N CME input parameters, then performing an ensemble of N runs of WSA-ENLIL cone model.  This gives an ensemble of N CME arrival times and impact estimates.

NASA GSFC SWRC ENLIL settings:
ENLIL version: 2.7
Resolution: low2 (256x30x90)
Ambient settings: a3b1f
WSA version: 2.2
(Enlil 2.7 w/res:low2 ambient:a3b1f, WSA2.2)

## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME update (ensemble) (STEREO A, Missions Near Earth)
##
## Message Issue Date: 2023-05-09T12:13:04Z
## Message ID: 20230509-AL-002
##
## Disclaimer: NOAA's Space Weather Prediction Center is the United States Government official source for space weather forecasts. This "Experimental Research Information" consists of preliminary NASA research products and should be interpreted and used accordingly.


## Summary:

BETA PRODUCT. ENSEMBLE PRODUCT IS STILL IN DEVELOPMENT MODE. PLEASE LET US KNOW IF YOU HAVE ANY SUGGESTIONS FOR MODIFICATIONS.  

Ensemble modeling update on CME with ID 2023-05-07T23:12:00-CME-001 (see previous notifications 20230508-AL-005 and 20230508-AL-007). Based on analysis by the Moon to Mars Space Weather Analysis Office and heliospheric ensemble modeling carried out at the Community Coordinated Modeling Center, it is estimated that the CME may impact STEREO A. For 24 ensemble members (see notes section), simulations indicate that the leading edge of the CME will reach:

- STEREO A between about 2023-05-09T15:35Z and 2023-05-09T21:42Z (average arrival 2023-05-09T18:24Z) for 100% of simulations.

Additionally the CME is estimated to reach NASA missions near Earth between about 2023-05-09T15:08Z and 2023-05-09T20:19Z (average arrival 2023-05-09T17:32Z) for 100% of simulations.  The ensemble-based forecast indicates that there is a 91% chance for the maximum Kp index to be in the 5-7 range (minor to strong).

Links to the ensemble details of the modeled event:
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/20230507_231200_ncmes1_sims24_HILOX177_anim_tim-den.gif
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/20230507_231200_ncmes1_sims24_HILOX177_arrival_Earth.gif
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/20230507_231200_ncmes1_sims24_HILOX177_Earth_stack.gif
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/20230507_231200_ncmes1_sims24_HILOX177_probabilistic_Kp_forecast_wdist.gif
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/20230507_231200_ncmes1_sims24_HILOX177_arrival_STA.gif
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/20230507_231200_ncmes1_sims24_HILOX177_STA_stack.gif

## Notes:
This CME event (2023-05-07T23:12:00-CME-001) is also predicted to have an impact at OSIRIS-REx at 2023-05-10T10:44Z (plus minus 7 hours) based on previous heliospheric modeling (see notification 20230508-AL-007).

Ensemble CME modeling at M2M is performed by building sets of initial CME parameters and carrying out separate simulations for each set. This approach allows a mapping of initial CME parameter uncertainties into a statistical characterization of CME arrival times and impact at locations of interest.

Description of links: For each location, the first link shows the WSA-ENLIL+Cone model animation for the median CME input parameters, the second link shows the probabilistic distribution of predicted arrival times histogram, and the third link shows a stack plot of the WSA-ENLIL+Cone modeled magnetic field, velocity, density, and temperature for all ensemble members. For missions near Earth, a histogram of the probabilistic Kp forecast is also provided.

For the full details of the modeled event, please go here:
https://iswa.gsfc.nasa.gov/ENSEMBLE/2023-05-08_ncmes1_sims24_HILOX177/Detailed_results_20230507_231200_ncmes1_sims24_HILOX177.txt
###



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NOAA's Space Weather Prediction Center is the United States Government official source for space weather forecasts. This "Experimental Research Information" consists of preliminary NASA research products and should be interpreted and used accordingly.
Lead Time: 28.03 hour(s)
Difference: 4.57 hour(s)
Prediction submitted by Mattie Anastopulos (M2M Office) on 2023-05-08T18:04Z
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