Description of Symbols
(For details, please click here)

LowLow
< 3.8e+7 [/cm2 sr]
Slightly highSlightly high
>= 3.8e+7 [/cm2 sr]
< 3.8e+8 [/cm2 sr]
HighHigh
>= 3.8e+8 [/cm2 sr]
< 3.8e+9 [/cm2 sr]
Very highVery high
>= 3.8e+9 [/cm2 sr]
  • Warning level is determined on the basis of 24h fluence of electrons (>2 MeV) at Geostationary orbit of the GOES primary satellite.
  • Forecast is updated every one hour.

Electron Fluence Forecast

Updated every one hour / Latest update at: YYYY/mm/dd HH:ii（UT）
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Next 24 hours
from UT

Low % | Moderate % | High % | Extreme %

24h fluence(/cm2 sr)

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Next 48 hours
from UT

Low %
Moderate %
High %
Extreme %

24h fluence(/cm2 sr)
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Next 72 hours
from UT

Low %
Moderate %
High %
Extreme %

24h fluence(/cm2 sr)

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Observation Data Box

Real-time data plots of radiation belt electron flux at geostationary earth orbit (GOES, HIMAWARI, and DRTS), solar wind (DSCOVR and ACE), and geomagnetic indices (AE and Dst).
  • Hazard Map at GEO

    Hazard Map at GEO

    Hourly forecasted flux of >2 MeV electron and a hazard level at 24 local times

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  • Forecast Performance

    Forecast Performance

    Forecast performance in comparison with observed data and prediction efficiency.

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  • Time History of Electron Flux Variation

    Time History of Electron Flux Variation

    >2 MeV electron flux variation observed by GOES series in 1996 – 2010.

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