CME ScoreBoard Header


Prediction Detail

Prediction for CME (2019-05-12T19:54:00-CME-001)

CME Observed Time: 2019-05-12T19:54Z
CME Note: There is no clear signature arrival for this specific CME. The arrival attributed to the 2019-05-13T16:09Z CME is also very weak and difficult to be certain about it.
CME was not detected at Earth.
Observed Geomagnetic Storm Parameters due to CME:

Predicted Arrival Time: 2019-05-16T09:57Z
Prediction Method: CAT-PUMA
Prediction Method Note:
This is a prediction for the CME at 2019-05-12T20:24

CME Parameters from SOHO LASCO C2 & C3:
Onset time: 2019-05-12T20:24
Angular width: 191.2
Average speed: 287.2 km/s
Final speed: 495.7 km/s
Mass: 1.12e15 g (average value from the model)
MPA: 124.5

Solar Wind Parameters from DSCOVR Spacecraft:
Bz: -1.376 nT
Alpha-Proton Ratio: 0.041  # No observation, use average value in the model
Flow Speed: 321.607 km/s
Flow Latitude: -2.993
Pressure: 0.250 nPa
Flow Longitude: 5.295
Bx: 6.921 nT
Temperature: 11879.100 K
Lead Time: 48.97 hour(s)
Difference: -----
Prediction submitted by Jiajia Liu (UoS) on 2019-05-14T08:59Z
Insert title here

CCMC Rules of the Road: CCMC requests that users notify the CCMC, CME model/technique developers and submitting forecasters/researchers before performing event and validation studies with data from the CME Arrival Time Scoreboard. It is recommended that such studies be performed with the knowledge and collaboration of developers and submitting forecasters/researchers.

Important Disclaimer Notice

If you are looking for the official U.S. Government forecast for space weather, please go to NOAA's Space Weather Prediction Center ( This "Experimental Research Information" consists of preliminary NASA research products and should be interpreted and used accordingly.

NASA Official: Dr. Maria Kuznetsova
Curator: Chiu Wiegand