2025-12-0500-000870

The specified data of extream low is not available at this time.

Columns

Name Unit Displayed Description
timestamp ✓ datetime
detected_id Vortex ID that matches the detection rule.
ID Vortex ID at the corresponding time.
If a split occurs, the detected_id may not match the detected_id.
lat deg ✓ Latitude
lon deg ✓ Longitude
val m Geopotential height at the center of the vortex
So m (100 km)-1 ✓ Optimal slope
ro km ✓ Optimal radius
Do m Optimal depth
Sb m (100 km)-1 ✓ Intensity of background slope (SBG)
ang rad ✓ Direction of SBG
m m (100 km)-1 Eastward component of SBG
n m (100 km)-1 Northward component of SBG
SR ✓ Ratio of intensity of background slope (SBG) to optimal slope (So) (SBG/So)
ex ✓ COL flag
  • 0: trough
  • 1: COL
Merge Merge Log
  • 0: None
  • -1: Vortex dissipated
  • -2: Merged from another
  • -3: Present at the end of analysis
  • Vortex ID: Merged into the corresponding vortex and dissipated
Split Split Log
  • 0: None
  • -1: Vortex generated
  • -2: Split into another
  • -3: Present at the start of analysis
  • Vortex ID: Formed by splitting from the corresponding vortex
generation Generation Number
Set to 1 at the initial analysis time (FT = 0) and incremented when a different vortex ID is encountered as time is traced backward.