Shortwave Fadeout(SWF) Monitor
This tool monitors shortwave fadeout events using echo count analysis from North
American SuperDARN radars. It uses data from three Virginia Tech radars:
Blackstone (BKS), Fort Hays West (FHW), and Fort Hays East (FHE). Archive data
is available from 2017 to present, with regular processing of new data. We focus
on periods when North America is on the dayside, since shortwave fadeout is a
dayside phenomenon.
📊 Calendar Color Guide:
Click any day to view detailed analysis
🌞 Solar Flare Events
X-Class Flare
Most intense, major radio disruption
M-Class Flare
Medium intensity, moderate effects
C-Class Flare
Minor flares, minimal impact
📡 SWF Analysis States
○
Flare / No SWF
Dayside flare detected, no shortwave fadeout
🌙
Nightside Flare
Flare during nighttime (radar unaffected)
📊 Data Status
No Data Available
No solar activity or data missing
ℹ️ Note: Analysis focuses on North American dayside
periods when SuperDARN radars can detect shortwave fadeout effects.
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Explore SWF Events
Click any colored date above to analyze SuperDARN echo count patterns and discover shortwave fadeout events detected by North American radars.
What you'll see:
SuperDARN echo count time series
SWF event phase markers
Ionospheric impact analysis
GOES X-ray irradiance data