Critical incident

DTN: Enhanced Flight Hazards Issue

Affected: GFS GRIB2 Flight Hazards, GFS Shapefile Flight Hazards, GFS GeoJSON Flight Hazards

Current status of DTN: Operational — live DTN status

Timeline

1. May 27, 2026, 16:51 UTC
   investigating
   We are investigating issues with the model data associated with the Enhanced Flight Hazards. Latest data available: Global: 27 May 0600Z North America: 27 May 1400Z Data for the global 27 May 1200Z run is delayed. Data for the North America 27 May 1500Z run is delayed.
2. May 27, 2026, 17:56 UTC
   investigating
   We continue to investigate this issue. Latest data available: Global: 27 May 0600Z North America: 27 May 1400Z Data for the global 27 May 1200Z run is delayed. Data for the North America 27 May 1500Z run is delayed.
3. May 27, 2026, 19:02 UTC
   investigating
   Investigation as to why model data is not getting into the Enhanced Flight Hazards continues. Latest data available: Global: 27 May 0600Z North America: 27 May 1400Z Data for the global 27 May 1200Z run is delayed. Data for the North America 27 May 1500Z run is delayed.
4. May 27, 2026, 20:00 UTC
   investigating
   We continue to investigate the model data issue. Latest data available: Global: 27 May 0600Z North America: 27 May 1400Z Data for the global 27 May 1200Z run is delayed. Data for the North America 27 May after 14Z is delayed.
5. May 27, 2026, 21:12 UTC
   monitoring
   We are starting to see the latest data populate. We will conitnue to monitor.
6. May 27, 2026, 23:07 UTC
   monitoring
   All model data has processed. We continue to monitor for the 18Z model update.
7. May 28, 2026, 01:55 UTC
   resolved
   Data has been flowing over the past few hours for the North American Hazards. The 18Z Global Hazards were on-time as well and we expect no delay with the 00z Global Hazards.

Updates as published by DTN (original).