COL Map Ver 3.0

2025-10-0200-000465

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
06Z 25 Oct	74.0	31.5	11.19	900	23.11	-1.6	2.07	0
12Z 25 Oct	73.5	39.0	10.87	800	25.6	-1.68	2.36	0
18Z 25 Oct	71.5	49.0	12.84	600	28.73	-1.86	2.24	0
00Z 26 Oct	70.5	56.5	14.63	600	26.81	-1.99	1.83	0
06Z 26 Oct	69.5	62.5	15.27	800	25.28	-2.1	1.66	0
12Z 26 Oct	68.0	70.0	16.8	900	23.95	-2.09	1.43	0
18Z 26 Oct	66.5	76.5	17.78	1000	22.3	-2.07	1.25	0
00Z 27 Oct	65.5	80.5	18.96	900	24.36	-2.14	1.28	1
06Z 27 Oct	64.0	85.5	18.8	1000	24.25	-2.1	1.29	1
12Z 27 Oct	63.0	90.5	18.07	1000	24.21	-2.08	1.34	0
18Z 27 Oct	63.0	95.5	18.52	1100	20.41	-2.09	1.1	1
00Z 28 Oct	60.5	98.0	18.56	1000	23.27	-2.08	1.25	1
06Z 28 Oct	60.0	103.0	16.64	1100	20.31	-2.06	1.22	1
12Z 28 Oct	58.5	105.5	14.99	1100	20.95	-2.05	1.4	1
18Z 28 Oct	58.5	108.5	13.36	1100	17.17	-2.02	1.29	1
00Z 29 Oct	59.5	112.0	13.34	2100	18.28	-2.09	1.37	1
06Z 29 Oct	57.5	114.5	13.09	2100	20.13	-2.08	1.54	1
12Z 29 Oct	53.5	118.0	13.75	2200	24.19	-1.99	1.76	0
18Z 29 Oct	53.5	121.5	14.06	2100	23.61	-1.93	1.68	0
00Z 30 Oct	54.5	123.0	14.43	2300	22.94	-1.92	1.59	0
06Z 30 Oct	54.0	126.5	15.26	2000	22.31	-1.82	1.46	0
12Z 30 Oct	53.5	127.0	15.77	2300	23.74	-1.86	1.51	0
18Z 30 Oct	53.5	130.0	16.22	2200	23.22	-1.83	1.43	0
00Z 31 Oct	54.0	131.5	16.22	2300	23.43	-1.84	1.44	0
06Z 31 Oct	55.0	132.0	15.75	2400	22.28	-1.9	1.41	0
12Z 31 Oct	52.5	125.0	16.24	2400	25.23	-1.89	1.55	0
18Z 31 Oct	48.5	125.0	17.65	2000	28.5	-1.71	1.61	0
00Z 01 Nov	47.5	125.5	19.56	1900	29.22	-1.61	1.49	0
06Z 01 Nov	47.5	128.0	21.16	1900	29.4	-1.52	1.39	0
12Z 01 Nov	47.5	131.0	22.38	2000	30.18	-1.47	1.35	0
18Z 01 Nov	49.0	134.5	22.66	2100	28.82	-1.44	1.27	0
00Z 02 Nov	50.0	138.0	21.92	2200	28.3	-1.43	1.29	0
06Z 02 Nov	49.5	141.5	20.71	2200	29.96	-1.43	1.45	0
12Z 02 Nov	42.0	136.5	21.33	1200	42.23	-1.45	1.98	0
18Z 02 Nov	40.5	138.0	21.11	900	44.31	-1.4	2.1	0
00Z 03 Nov	41.5	142.5	20.56	900	47.25	-1.27	2.3	0
06Z 03 Nov	43.0	147.5	17.94	800	50.18	-1.21	2.8	0
12Z 03 Nov	46.5	153.0	16.91	1000	48.81	-1.23	2.89	0
18Z 03 Nov	57.5	153.5	12.54	1400	24.34	-1.28	1.94	0
00Z 04 Nov	56.5	158.5	11.72	1500	27.63	-1.3	2.36	0

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 (S_BG)
ang	rad	✓	Direction of S_BG
m	m (100 km)^-1		Eastward component of S_BG
n	m (100 km)^-1		Northward component of S_BG
SR		✓	Ratio of intensity of background slope (S_BG) to optimal slope (S_o) (S_BG/S_o)
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.