Weather and Flight Path Decisionmaking Resources

• Significant Weather + NAT Eastbound Tracks
• Significant Weather + NAT Westbound Tracks
• Jet Stream
  • CRWS Jet Stream Maps - Analysis
  • CRWS Jet Stream Maps - Forecast

• Daily NAT Eastbound Tracks + Sig Wx
• Daily NAT Westbound Tracks + Sig Wx

The eastbound (northern) Tracks seem to be active from 0100z to 0800z, 7 hours. That's 2000EST to 0300 EST.

The westbound (southern) Tracks seem to be active from 1130z to 1900z, 7.5 hours. That's 0630EST to 1400 EST.