IGC Spy

Glider AX Thermal Info (Task 3 Meter 18 - 31 July 2018)

		Thermal Time			Thermal Alt					Orbits Speed			Orbits Diam			Orbit Time			Climb Rate			Other
ID	Type	Start [hms]	End [hms]	Duration [hms]	Start [ft]	End [ft]	Delta [ft]	Lost [ft]	Lost [%]	Avg (stab) [kts]	Min (stab) [kts]	Max (stab) [kts]	Avg (stab) [m]	Min (stab) [m]	Max (stab) [m]	Avg (stab) [sec]	Min (stab) [sec]	Max (stab) [sec]	Avg (stab) [kts]	Min (stab) [kts]	Max (stab) [kts]	Direction	Track Length [km]	Count
0	All			00:58:16			24566	2290	9.3 %	70.2						27 blah			4.2					18
1	Thermal	12:23:08	12:26:06	00:02:58	6889	8776	1886	114	6.1 %	71.4 72.1	54.6 70.3	81.7 73.5	294 337	25 334	349 349	25.4 28.6	2 28	33 29	6 5.8	3 3	8.5 7.2	Right	6.5	7
1	Orbit	12:23:08	12:23:41	00:00:33	6889	7362	472	0	0 %	63.3			0			33			8.5			Right	1.1
2	Orbit	12:23:41	12:24:10	00:00:29	7362	7706	344	0	0 %	70.3			0			29			7			Right	1
3	Orbit	12:24:10	12:24:39	00:00:29	7706	8057	351	0	0 %	70.4			0			29			7.2			Right	1.1
4	Orbit	12:24:39	12:25:07	00:00:28	8057	8333	275	6	2.4 %	72.8			0			28			5.8			Right	1
5	Orbit	12:25:07	12:25:35	00:00:28	8333	8612	278	6	2.4 %	73.5			0			28			5.9			Right	1.1
6	Orbit	12:25:35	12:26:04	00:00:29	8612	8759	147	101	68.9 %	73.4			0			29			3			Right	1.1
7	Orbit	12:26:04	12:26:06	00:00:02	8759	8776	16	0	0 %	76.4			0			02			4.9			Right	0.1
2	Thermal	12:41:47	12:45:43	00:03:56	4370	6896	2526	3	0.1 %	70 70.2	60.8 68.2	78.4 72.9	300 296	283 283	329 326	26.2 25.7	24 24	29 28	6.4 6.3	5.6 5.6	7.5 7.5	Right	8.5	9
10	Orbit	12:41:47	12:42:14	00:00:27	4370	4698	328	0	0 %	69.1			0			27			7.2			Right	1
11	Orbit	12:42:14	12:42:39	00:00:25	4698	4934	236	3	1.4 %	69			0			25			5.6			Right	0.9
12	Orbit	12:42:39	12:43:05	00:00:26	4934	5193	259	0	0 %	68.2			0			26			5.9			Right	0.9
13	Orbit	12:43:05	12:43:33	00:00:28	5193	5469	275	0	0 %	71.1			0			28			5.8			Right	1
14	Orbit	12:43:33	12:43:57	00:00:24	5469	5770	301	0	0 %	72.9			0			24			7.5			Right	0.9
15	Orbit	12:43:57	12:44:22	00:00:25	5770	6053	282	0	0 %	70.2			0			25			6.7			Right	0.9
16	Orbit	12:44:22	12:44:47	00:00:25	6053	6345	291	0	0 %	70.5			0			25			6.9			Right	0.9
17	Orbit	12:44:47	12:45:14	00:00:27	6345	6614	269	0	0 %	69.6			0			27			5.9			Right	1
18	Orbit	12:45:14	12:45:43	00:00:29	6614	6896	282	0	0 %	69.2			0			29			5.8			Right	1
3	Thermal	12:49:00	12:51:36	00:02:36	6102	7483	1381	59	4.3 %	73.5 74.4	59.5 72.7	81.6 75.9	312 277	271 271	405 286	26 22.8	22 22	34 23	5.3 5.6	4.6 5.2	5.8 5.8	Left	5.9	6
19	Orbit	12:49:00	12:49:31	00:00:31	6102	6364	262	9	3.8 %	70.6			0			31			5			Left	1.1
20	Orbit	12:49:31	12:49:54	00:00:23	6364	6581	216	0	0 %	73.6			0			23			5.6			Left	0.9
21	Orbit	12:49:54	12:50:16	00:00:22	6581	6791	209	3	1.6 %	75.3			0			22			5.7			Left	0.9
22	Orbit	12:50:16	12:50:39	00:00:23	6791	7017	226	0	0 %	72.7			0			23			5.8			Left	0.9
23	Orbit	12:50:39	12:51:02	00:00:23	7017	7221	203	6	3.2 %	75.9			0			23			5.2			Left	0.9
24	Orbit	12:51:02	12:51:36	00:00:34	7221	7483	262	39	15 %	72.8			0			34			4.6			Left	1.3
4	Thermal	12:55:20	12:57:48	00:02:28	6748	8385	1637	45	2.8 %	72.1 72.8	62.5 70.1	82.2 75.1	291 292	264 264	313 313	24.7 24.5	23 23	26 26	6.5 6.8	4.6 5.1	7.9 7.9	Right	5.5	6
25	Orbit	12:55:20	12:55:45	00:00:25	6748	7066	318	0	0 %	68.3			0			25			7.5			Right	0.9
26	Orbit	12:55:45	12:56:08	00:00:23	7066	7263	196	32	16.7 %	70.1			0			23			5.1			Right	0.8
27	Orbit	12:56:08	12:56:34	00:00:26	7263	7565	301	0	0 %	73.6			0			26			6.9			Right	1
28	Orbit	12:56:34	12:56:57	00:00:23	7565	7847	282	9	3.5 %	75.1			0			23			7.3			Right	0.9
29	Orbit	12:56:57	12:57:23	00:00:26	7847	8192	344	0	0 %	72.5			0			26			7.9			Right	1
30	Orbit	12:57:23	12:57:48	00:00:25	8192	8385	193	3	1.7 %	73.1			0			25			4.6			Right	0.9
5	Thermal	13:11:04	13:14:53	00:03:49	6486	8645	2158	127	5.9 %	71.6 72	53.6 69.9	84.7 75.2	336 336	298 298	402 402	28.6 28.5	26 26	35 35	5.6 5.8	3.6 3.6	7.2 7.2	Right	8.4	8
33	Orbit	13:11:04	13:11:32	00:00:28	6486	6729	242	52	21.6 %	69			0			28			5.1			Right	1
34	Orbit	13:11:32	13:11:58	00:00:26	6729	6935	206	0	0 %	69.9			0			26			4.7			Right	0.9
35	Orbit	13:11:58	13:12:25	00:00:27	6935	7099	164	59	36 %	70.1			0			27			3.6			Right	1
36	Orbit	13:12:25	13:13:00	00:00:35	7099	7470	370	3	0.9 %	70.1			0			35			6.3			Right	1.3
37	Orbit	13:13:00	13:13:28	00:00:28	7470	7798	328	0	0 %	73.2			0			28			6.9			Right	1.1
38	Orbit	13:13:28	13:13:56	00:00:28	7798	8136	337	13	3.9 %	75.2			0			28			7.2			Right	1.1
39	Orbit	13:13:56	13:14:23	00:00:27	8136	8408	272	0	0 %	73.8			0			27			6			Right	1
40	Orbit	13:14:23	13:14:53	00:00:30	8408	8645	236	0	0 %	71.8			0			30			4.7			Right	1.1
6	Thermal	13:38:35	13:43:22	00:04:47	5275	7575	2299	170	7.4 %	70.4 71	57.8 68.3	86.6 73.5	331 337	278 315	366 366	28.7 29	25 27	32 32	4.7 5	3.2 4.1	5.6 5.6	Right	10.4	10
42	Orbit	13:38:35	13:39:05	00:00:30	5275	5492	216	19	9.1 %	67.6			0			30			4.3			Right	1
43	Orbit	13:39:05	13:39:35	00:00:30	5492	5734	242	6	2.7 %	68.3			0			30			4.8			Right	1.1
44	Orbit	13:39:35	13:40:03	00:00:28	5734	5928	193	59	30.5 %	68.6			0			28			4.1			Right	1
45	Orbit	13:40:03	13:40:31	00:00:28	5928	6164	236	0	0 %	71.3			0			28			5			Right	1
46	Orbit	13:40:31	13:40:58	00:00:27	6164	6407	242	3	1.4 %	73.5			0			27			5.3			Right	1
47	Orbit	13:40:58	13:41:26	00:00:28	6407	6669	262	16	6.3 %	72.5			0			28			5.6			Right	1
48	Orbit	13:41:26	13:41:55	00:00:29	6669	6883	213	9	4.6 %	72.8			0			29			4.4			Right	1.1
49	Orbit	13:41:55	13:42:25	00:00:30	6883	7158	275	39	14.3 %	71.6			0			30			5.4			Right	1.1
50	Orbit	13:42:25	13:42:57	00:00:32	7158	7440	282	9	3.5 %	69.8			0			32			5.2			Right	1.1
51	Orbit	13:42:57	13:43:22	00:00:25	7440	7575	134	6	4.9 %	67.9			0			25			3.2			Right	0.9
7	Thermal	13:53:26	13:55:45	00:02:19	6515	6712	196	262	133.3 %	69 68.7	56.2 67.9	79.3 69.4	393 405	349 378	432 432	34.8 36	31 34	38 38	0.9 0.4	0.1 0.3	2.8 0.5	Left	4.9	4
54	Orbit	13:53:26	13:53:57	00:00:31	6515	6660	144	36	25 %	68.7			0			31			2.8			Left	1.1
55	Orbit	13:53:57	13:54:31	00:00:34	6660	6676	16	78	480 %	67.9			0			34			0.3			Left	1.2
56	Orbit	13:54:31	13:55:09	00:00:38	6676	6706	29	75	255.6 %	69.4			0			38			0.5			Left	1.4
57	Orbit	13:55:09	13:55:45	00:00:36	6706	6712	6	72	1100 %	69.9			0			36			0.1			Left	1.3
8	Thermal	14:02:08	14:05:12	00:03:04	5308	6197	889	160	18.1 %	68.1 69.7	54.3 67.7	79.8 73.2	294 323	84 312	356 355	26.3 28.4	8 26	34 32	2.7 3.3	1.2 2.1	4.5 4.5	Right	6.5	7
58	Orbit	14:02:08	14:02:42	00:00:34	5308	5406	98	68	70 %	63.9			0			34			1.7			Right	1.1
59	Orbit	14:02:42	14:03:10	00:00:28	5406	5583	177	3	1.9 %	68.5			0			28			3.7			Right	1
60	Orbit	14:03:10	14:03:36	00:00:26	5583	5688	104	16	15.6 %	73.2			0			26			2.4			Right	1
61	Orbit	14:03:36	14:04:03	00:00:27	5688	5892	203	22	11.3 %	70.9			0			27			4.5			Right	1
62	Orbit	14:04:03	14:04:32	00:00:29	5892	6066	173	9	5.7 %	67.9			0			29			3.6			Right	1
63	Orbit	14:04:32	14:05:04	00:00:32	6066	6181	114	22	20 %	67.7			0			32			2.1			Right	1.1
64	Orbit	14:05:04	14:05:12	00:00:08	6181	6197	16	16	100 %	64.5			0			08			1.2			Right	0.3
9	Thermal	14:09:15	14:10:34	00:01:19	6049	6545	495	98	19.9 %	68.5 69.3	59.3 69.3	77.3 69.3	294 329	206 329	348 329	26.3 29	18 29	32 29	3.5 3.5	2.4 3.5	4.7 3.5	Right	2.8	3
65	Orbit	14:09:15	14:09:47	00:00:32	6049	6302	252	3	1.3 %	66.4			0			32			4.7			Right	1.1
66	Orbit	14:09:47	14:10:16	00:00:29	6302	6473	170	42	25 %	69.3			0			29			3.5			Right	1
67	Orbit	14:10:16	14:10:34	00:00:18	6473	6545	72	52	72.7 %	69.8			0			18			2.4			Right	0.6
10	Thermal	14:10:38	14:12:01	00:01:23	6581	6807	226	164	72.5 %	70 71.4	61 71.4	81 71.4	315 351	175 351	419 351	27.7 30	15 30	38 30	1.7 1	1 1	2.5 1	Right	3	3
68	Orbit	14:10:38	14:11:16	00:00:38	6581	6692	111	72	64.7 %	67.4			0			38			1.7			Right	1.3
69	Orbit	14:11:16	14:11:46	00:00:30	6692	6745	52	49	93.8 %	71.4			0			30			1			Right	1.1
70	Orbit	14:11:46	14:12:01	00:00:15	6745	6807	62	42	68.4 %	71.1			0			15			2.5			Right	0.5
11	Thermal	14:19:48	14:21:49	00:02:01	5013	5561	547	95	17.4 %	68.4 68.6	60.2 67.9	79.5 69.4	269 326	46 318	333 333	24.2 29	4 28	30 30	1.4 2.5	-4.9 1.8	4.2 2.9	Right	4.2	5
71	Orbit	14:19:48	14:20:18	00:00:30	5013	5226	213	9	4.6 %	65.6			0			30			4.2			Right	1
72	Orbit	14:20:18	14:20:48	00:00:30	5226	5318	91	16	17.9 %	67.9			0			30			1.8			Right	1
73	Orbit	14:20:48	14:21:16	00:00:28	5318	5456	137	9	7.1 %	69.4			0			28			2.9			Right	1
74	Orbit	14:21:16	14:21:45	00:00:29	5456	5593	137	26	19 %	68.6			0			29			2.8			Right	1
75	Orbit	14:21:45	14:21:49	00:00:04	5593	5561	-32	32	-100 %	70.6			0			04			-4.9			Right	0.1
12	Thermal	14:23:33	14:27:52	00:04:19	5278	6984	1706	68	4 %	70 70.3	61.2 68.7	86.7 71.9	297 328	12 306	377 377	25.9 28.5	1 27	32 32	4.1 3.6	2.5 2.5	6.4 4.6	Left	9.3	10
76	Orbit	14:23:33	14:24:03	00:00:30	5278	5603	324	19	6.1 %	67.6			0			30			6.4			Left	1
77	Orbit	14:24:03	14:24:30	00:00:27	5603	5780	177	3	1.9 %	69.2			0			27			3.9			Left	1
78	Orbit	14:24:30	14:25:01	00:00:31	5780	5971	190	3	1.7 %	68.7			0			31			3.6			Left	1.1
79	Orbit	14:25:01	14:25:28	00:00:27	5971	6171	200	0	0 %	69.7			0			27			4.4			Left	1
80	Orbit	14:25:28	14:25:55	00:00:27	6171	6335	164	9	6 %	70.5			0			27			3.6			Left	1
81	Orbit	14:25:55	14:26:22	00:00:27	6335	6545	209	0	0 %	71.7			0			27			4.6			Left	1
82	Orbit	14:26:22	14:26:51	00:00:29	6545	6692	147	16	11.1 %	69.1			0			29			3			Left	1
83	Orbit	14:26:51	14:27:19	00:00:28	6692	6840	147	0	0 %	71.4			0			28			3.1			Left	1
84	Orbit	14:27:19	14:27:51	00:00:32	6840	6975	134	16	12.2 %	71.9			0			32			2.5			Left	1.2
85	Orbit	14:27:51	14:27:52	00:00:01	6975	6984	9	0	0 %	70.6			0			01			5.8			Left	0
13	Thermal	14:32:55	14:33:58	00:01:03	6551	6824	272	85	31.3 %	70.9 71.4	61.4 71.4	81.9 71.4	244 386	23 386	386 386	21 33	2 33	33 33	1.2 2.6	-1.9 2.6	2.8 2.6	Left	2.3	3
86	Orbit	14:32:55	14:33:23	00:00:28	6551	6686	134	59	43.9 %	70.3			0			28			2.8			Left	1
87	Orbit	14:33:23	14:33:56	00:00:33	6686	6830	144	19	13.6 %	71.4			0			33			2.6			Left	1.2
88	Orbit	14:33:56	14:33:58	00:00:02	6830	6824	-6	6	-100 %	70.9			0			02			-1.9			Left	0.1
14	Thermal	14:41:24	14:42:34	00:01:10	6145	6377	232	55	23.9 %	74.6 74.4	62.9 74.4	83.3 74.4	279 402	78 402	402 402	23.3 33	6 33	33 33	0.8 2.4	-2.3 2.4	2.4 2.4	Left	2.6	3
90	Orbit	14:41:24	14:41:55	00:00:31	6145	6266	121	19	16.2 %	70.3			0			31			2.3			Left	1.1
91	Orbit	14:41:55	14:42:28	00:00:33	6266	6400	134	13	9.8 %	74.4			0			33			2.4			Left	1.3
92	Orbit	14:42:28	14:42:34	00:00:06	6400	6377	-22	22	-100 %	79.1			0			06			-2.3			Left	0.2
15	Thermal	14:49:51	14:56:39	00:06:48	5790	8858	3067	203	6.6 %	69.3 67.6	51.3 65.6	96.3 73	322 346	47 291	406 406	29.1 31.3	3 26	36 36	3.8 4.6	-6.5 0.9	6.2 6.2	Right	14.2	14
94	Orbit	14:49:51	14:50:21	00:00:30	5790	6017	226	3	1.4 %	62.8			0			30			4.5			Right	1
95	Orbit	14:50:21	14:50:55	00:00:34	6017	6299	282	3	1.2 %	66.7			0			34			4.9			Right	1.2
96	Orbit	14:50:55	14:51:22	00:00:27	6299	6509	209	0	0 %	68.4			0			27			4.6			Right	0.9
97	Orbit	14:51:22	14:51:48	00:00:26	6509	6719	209	0	0 %	68.3			0			26			4.8			Right	0.9
98	Orbit	14:51:48	14:52:17	00:00:29	6719	6879	160	16	10.2 %	67.6			0			29			3.3			Right	1
99	Orbit	14:52:17	14:52:45	00:00:28	6879	7129	249	16	6.6 %	69			0			28			5.3			Right	1
100	Orbit	14:52:45	14:53:15	00:00:30	7129	7440	311	0	0 %	67.6			0			30			6.2			Right	1
101	Orbit	14:53:15	14:53:46	00:00:31	7440	7713	272	0	0 %	65.8			0			31			5.2			Right	1
102	Orbit	14:53:46	14:54:18	00:00:32	7713	7992	278	0	0 %	65.9			0			32			5.2			Right	1.1
103	Orbit	14:54:18	14:54:54	00:00:36	7992	8330	337	0	0 %	65.6			0			36			5.6			Right	1.2
104	Orbit	14:54:54	14:55:28	00:00:34	8330	8579	249	13	5.3 %	66.7			0			34			4.3			Right	1.2
105	Orbit	14:55:28	14:56:02	00:00:34	8579	8841	262	9	3.8 %	66.9			0			34			4.6			Right	1.2
106	Orbit	14:56:02	14:56:36	00:00:34	8841	8891	49	108	220 %	73			0			34			0.9			Right	1.3
107	Orbit	14:56:36	14:56:39	00:00:03	8891	8858	-32	32	-100 %	95.2			0			03			-6.5			Right	0.1
16	Thermal	15:18:52	15:25:03	00:06:11	4625	6253	1627	288	17.7 %	66.1 66.2	54.9 65.1	77.5 68.4	334 333	297 297	363 363	30.9 30.8	27 27	34 34	2.6 2.7	1.9 2.4	3.6 3.6	Right	12.6	12
108	Orbit	15:18:52	15:19:26	00:00:34	4625	4747	121	39	32.4 %	65.1			0			34			2.1			Right	1.1
109	Orbit	15:19:26	15:20:00	00:00:34	4747	4908	160	6	4.1 %	65.1			0			34			2.8			Right	1.1
110	Orbit	15:20:00	15:20:31	00:00:31	4908	5032	124	29	23.7 %	68.4			0			31			2.4			Right	1.1
111	Orbit	15:20:31	15:21:01	00:00:30	5032	5154	121	9	8.1 %	66.5			0			30			2.4			Right	1
112	Orbit	15:21:01	15:21:34	00:00:33	5154	5288	134	19	14.6 %	65.5			0			33			2.4			Right	1.1
113	Orbit	15:21:34	15:22:05	00:00:31	5288	5419	131	6	5 %	65.5			0			31			2.5			Right	1
114	Orbit	15:22:05	15:22:32	00:00:27	5419	5547	127	36	28.2 %	67.3			0			27			2.8			Right	0.9
115	Orbit	15:22:32	15:23:03	00:00:31	5547	5734	187	6	3.5 %	65.8			0			31			3.6			Right	1
116	Orbit	15:23:03	15:23:32	00:00:29	5734	5869	134	3	2.4 %	66.1			0			29			2.7			Right	1
117	Orbit	15:23:32	15:24:04	00:00:32	5869	6030	160	36	22.4 %	65.6			0			32			3			Right	1.1
118	Orbit	15:24:04	15:24:34	00:00:30	6030	6161	131	39	30 %	65.7			0			30			2.6			Right	1
119	Orbit	15:24:34	15:25:03	00:00:29	6161	6253	91	55	60.7 %	66.2			0			29			1.9			Right	1
17	Thermal	15:30:52	15:34:15	00:03:23	5078	6482	1404	59	4.2 %	71.7 72.1	57.2 70.3	83.9 73.6	298 287	281 281	361 295	25.4 24.3	24 24	31 25	4.1 4.4	2.9 3.2	5.3 5.3	Left	7.5	8
120	Orbit	15:30:52	15:31:18	00:00:26	5078	5232	154	19	12.8 %	69.4			0			26			3.5			Left	0.9
121	Orbit	15:31:18	15:31:43	00:00:25	5232	5456	223	0	0 %	70.3			0			25			5.3			Left	0.9
122	Orbit	15:31:43	15:32:07	00:00:24	5456	5659	203	0	0 %	71.4			0			24			5			Left	0.9
123	Orbit	15:32:07	15:32:32	00:00:25	5659	5826	167	16	9.8 %	72			0			25			4			Left	0.9
124	Orbit	15:32:32	15:32:56	00:00:24	5826	6023	196	16	8.3 %	72.4			0			24			4.9			Left	0.9
125	Orbit	15:32:56	15:33:20	00:00:24	6023	6200	177	3	1.9 %	73.6			0			24			4.4			Left	0.9
126	Orbit	15:33:20	15:33:44	00:00:24	6200	6328	127	0	0 %	73.1			0			24			3.2			Left	0.9
127	Orbit	15:33:44	15:34:15	00:00:31	6328	6482	154	3	2.1 %	71			0			31			2.9			Left	1.1
18	Thermal	15:34:19	15:39:01	00:04:42	6522	8533	2011	226	11.3 %	68.2 67.8	58 66.5	77.4 69.7	311 345	49 312	436 436	28.2 31.1	4 28	40 40	3.8 4.3	-1 2.9	5.8 5.8	Right	9.8	10
128	Orbit	15:34:19	15:34:48	00:00:29	6522	6729	206	16	7.9 %	64.1			0			29			4.2			Right	1
129	Orbit	15:34:48	15:35:17	00:00:29	6729	6873	144	9	6.8 %	66.6			0			29			2.9			Right	1
130	Orbit	15:35:17	15:35:45	00:00:28	6873	7080	206	0	0 %	68.1			0			28			4.4			Right	1
131	Orbit	15:35:45	15:36:25	00:00:40	7080	7339	259	29	11.4 %	66.5			0			40			3.8			Right	1.4
132	Orbit	15:36:25	15:36:53	00:00:28	7339	7575	236	59	25 %	69.7			0			28			5			Right	1
133	Orbit	15:36:53	15:37:22	00:00:29	7575	7828	252	39	15.6 %	69			0			29			5.2			Right	1
134	Orbit	15:37:22	15:37:52	00:00:30	7828	8123	295	22	7.8 %	67.5			0			30			5.8			Right	1
135	Orbit	15:37:52	15:38:24	00:00:32	8123	8346	223	6	2.9 %	67.5			0			32			4.1			Right	1.1
136	Orbit	15:38:24	15:38:57	00:00:33	8346	8540	193	36	18.6 %	67.2			0			33			3.5			Right	1.1
137	Orbit	15:38:57	15:39:01	00:00:04	8540	8533	-6	6	-100 %	75.6			0			04			-1			Right	0.2

Color of the track indicates climb rate
Width of the track indicates ground speed (not air speed)
Pink arrow indicates wind (not always reliable)
Fire indicates thermal source based on wind

IGC-SPY Gliders Competitions Flight LOG analysis (AX)

Glider AX Thermal Info (Task 3 Meter 18 - 31 July 2018)

Color of the track indicates climb rate Width of the track indicates ground speed (not air speed) Pink arrow indicates wind (not always reliable) Fire indicates thermal source based on wind

Color of the track indicates climb rate
Width of the track indicates ground speed (not air speed)
Pink arrow indicates wind (not always reliable)
Fire indicates thermal source based on wind