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MOSWOC high energy electron forecast for geostationary orbit

Forecaster summary - Issued 2023-12-11T00:26:44

High energy electron flux, as observed by GOES-16, has been mainly moderate over the last few days, since the solar wind enhancement from a recent coronal hole. This is likely to drop to near background levels with any enhancement from either CH77/+ or CH80/+, along with any CME glance on Day 1 (11 Dec). Some recovery in flux, to mainly moderate levels, is then likely Days 2-3 (12-13 Dec), before a further suppression on Day 4 (14 Dec) with another enhancement likely from CH79/+.

The associated 24 hour fluence is expected to remain below the Active threshold through the period. A decline is probable on Day 1, before a slight recovery on Days 2-3. It is unlikely this will reach the Active threshold, however, before a further decline is likely on Day 4. This is broadly supported by REFM, which keeps fluence below Active, although doesn't really signal a rise on Days 2-3.

 
High Energy Electron Event Forecast
Issued 2023-12-11T00:26:44
Probability of threshold exceedance
 ActiveV.Active
Day 1 1% 1%
Day 2 5% 1%
Day 3 10% 1%
Day 4 5% 1%