HF Systems
FORECAST SOL: Moderate yellow MAG: Normal green ION: Normal green
HomeHF SystemsGlobal HFHF ConditionsGlobal Propagation Friday, Mar 21 2025 03:34 UT
Global HF

Global Propagation

Global Propagation Now

Updates: Every 60 minutes

(last updated 21 Mar 2025 03:30 UT)

HF Conditions For 21 03 25 0300UT Latitude Band Low mid high Normal Normal Fair

Global Propagation Summary

Updates: Every 24 hours

(last updated 20 Mar 2025 23:31 UT)

Latitude Band Date Low Middle High 20 Mar Normal Normal Normal-fair PCA Event : No event.

Global Propagation Forecast

Updates: Every 24 hours

(last updated 20 Mar 2025 23:31 UT)

Latitude Band Date Low Middle High 21 Mar Normal Normal Normal 22 Mar Normal Normal Fair 23 Mar Normal Normal-fair Fair COMMENT: HF radio propagation conditions on UT day 20-Mar were mostly normal. Some depressions were observed in the southern hemisphere during the first half of the UT day. HF radio propagation conditions are expected to be normal over 21-23 Mar, and may become mildly degraded on 23-Mar due to coronal hole activity. Equatorial scintillation is likely over this period.

Geomagnetic Latitude Ranges:

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