2025-05-0500-001808

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 May45.599.58.3320020.56-2.022.470
18Z 31 May49.598.07.2470020.47-2.132.830
00Z 01 Jun51.098.59.0360019.89-2.32.20
06Z 01 Jun48.5100.58.250022.65-2.422.760
12Z 01 Jun54.0105.56.69130014.67-2.12.190
18Z 01 Jun51.0108.58.17130015.04-2.011.841
00Z 02 Jun47.5117.519.967009.36-1.110.471
06Z 02 Jun47.5118.016.879007.33-1.550.431
12Z 02 Jun44.5121.015.5390010.4-1.50.671
18Z 02 Jun45.5122.016.8910007.6-1.620.451
00Z 03 Jun45.0122.018.5510007.29-1.950.391
06Z 03 Jun43.5123.018.2410009.23-2.190.511
12Z 03 Jun42.5125.017.1911009.77-2.110.571
18Z 03 Jun41.0126.517.21120011.09-2.010.641
00Z 04 Jun40.5129.517.62110012.42-1.730.711
06Z 04 Jun44.5138.516.78110010.6-0.890.631
12Z 04 Jun45.0139.519.0911009.45-0.930.491
18Z 04 Jun46.0141.021.1110008.75-0.750.411
00Z 05 Jun47.0143.522.059009.81-0.460.441
06Z 05 Jun49.5145.022.818008.07-0.050.351
12Z 05 Jun50.5145.022.658005.34-0.350.241
18Z 05 Jun51.0146.522.67005.6-0.890.251
00Z 06 Jun51.5148.522.0970010.58-0.950.481
06Z 06 Jun53.0150.519.6760011.65-0.830.591
12Z 06 Jun54.0151.018.5410009.55-0.960.511
18Z 06 Jun55.5152.018.0710008.31-0.650.461
00Z 07 Jun55.5151.017.2611008.95-0.710.521
06Z 07 Jun56.0151.516.2111009.59-0.670.591
12Z 07 Jun57.0151.515.3311008.21-0.740.541
18Z 07 Jun57.5152.514.853007.14-0.920.481

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.