Mauna Loa Solar Observatory (MLSO) acquires unique observations of the Sun’s atmosphere to support NCAR’s goal to address critical gaps in understanding the Sun-Earth system and to provide observations to reduce damage and disruption from space weather hazards.

NEWS: MLSO data used in eclipse prediction model

PSI prediction image of August 12, 2026 eclipse

PSI eclipse prediction

MLSO K-Cor image that was used in PSI prediction image of August 12, 2026 eclipse

K-Cor image used in PSI prediction

Predictive Science Inc (PSI) runs a continuously updated model of the solar corona that assimilates fresh magnetic field measurements in near real time. To constrain and check that model, PSI researchers have compared coronal features traced in white light images from HAO's K-Cor coronagraph against the model's predicted magnetic structure. Today (2026-08-12), that model is producing a real-time prediction of the corona along the path of totality.

 

If you would like to receive prompt CME alerts from MLSO, send a request to mlso_data_requests@ucar.edu.

Latest Images

K-Cor

 
pB Intensity
 
 
NRGF Intensity
 

UCoMP

Density
 
Enhanced Intensity
 
Doppler Velocity
 
Line Width
 
Linear Polarization
 
Version 1.0.1 FITS data now available

GONG H-alpha

The Mauna Loa Observatory GONG station is offline until power is completely restored, so the most recent GONG image from an open station is shown here.

Featured Events

  2026-04-01: Fast CME

  POS B-field map

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