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Prediction for CME (2026-02-16T13:23:00-CME-001)

CME Observed Time: 2026-02-16T13:23Z
DONKI Link: https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/44685/-1
CME Note: CME first seen to the E in STEREO A COR2 starting at 2026-02-16T13:23Z. This CME is also seen as a faint, partial halo in SOHO LASCO C2/C3 and GOES CCOR-1. The source is most likely a large eruption best seen in SDO AIA 171 and SDO AIA 304 starting around 2026-02-16T12:18Z spanning S30E15 to S10W05. Subsequent dimming and an EUV wave can also be seen in SDO AIA 193. There is no clear arrival signature in solar wind on 2026-02-18 and 19. (Please note that there is a very weak/unclear CME arrival signature on 2026-02-20 (starting around 2026-02-20T22:35Z), with no accompanying increase in the solar wind speed, which is possibly a glancing blow from the the slower CME: 2026-02-16T14:08Z).
CME was not detected at Earth.
Observed Geomagnetic Storm Parameters due to CME:
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Predicted Arrival Time: 2026-02-18T10:40Z (-7.0h, +7.0h)
Predicted geomagnetic storm max Kp range due to CME: 6.0 - 8.0
Prediction Method: WSA-ENLIL + Cone (NASA M2M)
Prediction Method Note:
## Community Coordinated Modeling Center Database Of Notifications, Knowledge, Information ( CCMC DONKI )
## Message Type: Space Weather Notification - CME (Juno, BepiColombo, Solar Orbiter, Missions Near Earth)
##
## Message Issue Date: 2026-02-16T19:03:37Z
## Message ID: 20260216-AL-004
##
## 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:

O-type CME detected by STEREO A / GOES / SOHO. 

Start time of the event: 2026-02-16T13:23Z.

Estimated speed: ~1029 km/s.

Estimated opening half-angle: 26 deg.

Direction (lon./lat.): -17/-3 in Heliocentric Earth Equatorial coordinates.

Activity ID: 2026-02-16T13:23:00-CME-001

Based on preliminary analysis by the Moon to Mars Space Weather Analysis Office and heliospheric modeling carried out at NASA Community Coordinated Modeling Center, it is estimated that this CME may affect Juno (glancing blow), BepiColombo, and Solar Orbiter (glancing blow). The leading edge of the CME will reach BepiColombo at 2026-02-17T05:09Z (plus minus 7 hours). The flank of the CME may reach Juno at 2026-03-05T00:00Z and Solar Orbiter at 2026-02-17T08:00Z (plus minus 7 hours).

The simulation also indicates that the CME may impact NASA missions near Earth. Simulations indicate that the leading edge of the CME will reach NASA missions near Earth at about 2026-02-18T10:34Z (plus minus 7 hours). The roughly estimated expected range of the maximum Kp index is 6-8 (moderate to severe).
   
  
Links to the movies of the modeled event (includes CME: 2026-02-16T13:23:00-CME-001):

(a) 2 AU outer boundary
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_2.0_anim.tim-den.gif
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_2.0_anim.tim-vel.gif
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_2.0_ENLIL_CONE_timeline.gif
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_2.0_ENLIL_CONE_Bepi_timeline.gif
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_2.0_ENLIL_CONE_SolO_timeline.gif

(b) 5.5 AU outer boundary
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_5.5_anim.tim-den.gif
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_5.5_anim.tim-vel.gif
http://iswa.gsfc.nasa.gov/downloads/20260216_162800_5.5_ENLIL_CONE_Juno_timeline.gif


## Notes: 


SCORE CME typification system:
S-type: CMEs with speeds less than 500 km/s
C-type: Common 500-999 km/s
O-type: Occasional 1000-1999 km/s
R-type: Rare 2000-2999 km/s
ER-type: Extremely Rare >3000 km/s


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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: 39.62 hour(s)
Difference: -----
Prediction submitted by Elizabeth Juelfs (LASSOS) on 2026-02-16T19:03Z
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