2025-03-0500-001809

Detail of path

The daily central positions of lows are plotted with reference to the time shown at the top of the image. For a description of each column in the table, please refer to the bottom of this page.

timestamp lat lon So ro Sb ang SR ex
12Z 31 Mar49.5110.58.670022.95-2.472.670
18Z 31 Mar46.5114.010.2370019.7-2.381.930
00Z 01 Apr44.5116.012.2770017.09-2.231.390
06Z 01 Apr43.5118.512.180013.55-2.131.120
12Z 01 Apr41.0115.513.1940021.41-2.481.620
18Z 01 Apr39.0119.015.5340018.82-2.211.210
00Z 02 Apr38.0122.017.9530018.15-2.011.011
06Z 02 Apr38.0124.521.6930011.23-2.180.521
12Z 02 Apr37.0126.521.5730015.58-2.190.721
18Z 02 Apr36.0129.516.0530017.02-2.051.061
00Z 03 Apr35.5133.513.3930018.94-1.471.411

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.