HF Systems
FORECAST SOL: Normal green MAG: Moderate yellow ION: Normal green
HomeHF SystemsGlobal HFHF ConditionsGlobal Propagation Thursday, Aug 17 2017 17:29 UT
Global HF

Global Propagation

Global Propagation Now

Updates: Every 60 minutes

(last updated 17 Aug 2017 17:25 UT)

HF Conditions For 17 08 17 1700UT Latitude Band Low mid high Normal Normal Fair-Normal

Global Propagation Summary

Updates: Every 24 hours

(last updated 16 Aug 2017 23:50 UT)

Latitude Band Date Low Middle High 16 Aug Normal Normal Normal-fair PCA Event : No event.

Global Propagation Forecast

Updates: Every 24 hours

(last updated 16 Aug 2017 23:50 UT)

Latitude Band Date Low Middle High 17 Aug Normal Normal-fair Fair 18 Aug Normal Normal-fair Fair 19 Aug Normal Normal Normal-fair COMMENT: Maximum user frequencies where near predicted monthly values for low to mid latitudes with notable enhancements. Disturbed ionospheric support at times for high latitudes. Depressed MUFs expected for high to mid latitudes on 17Aug-19Aug due to increased geomagnetic activity.

Geomagnetic Latitude Ranges:

  • Low: 0-20 degrees
  • Middle: 20-60 degrees
  • High: 60-90 degrees
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