IGC Spy

Glider 70 Thermal Info (Practice 2 Club)

		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			00:48:07			22509	1955	8.7 %	55.8						22 blah			4.6					18
1	Thermal	10:46:38	10:47:50	00:01:12	6893	7230	337	147	43.7 %	55.8 57.7	36.2 57.7	77.1 57.7	220 208	184 208	270 208	24 22	22 22	28 22	3 4.6	0.6 4.6	4.6 4.6	Mixed	2.1	3
1	Orbit	10:46:38	10:47:06	00:00:28	6893	6919	26	144	550 %	58.8			0			28			0.6			Left	0.8
2	Orbit	10:47:06	10:47:28	00:00:22	6919	7089	170	0	0 %	57.7			0			22			4.6			Right	0.7
3	Orbit	10:47:28	10:47:50	00:00:22	7089	7230	141	3	2.3 %	51			0			22			3.8			Right	0.6
2	Thermal	10:47:55	10:49:14	00:01:19	7296	7762	465	45	9.9 %	56.8 54	0 53.4	108.4 54.7	177 217	21 215	253 219	19.8 24.5	2 24	28 25	3.8 3.3	2.8 2.8	4.9 3.7	Right	2.2	4
4	Orbit	10:47:55	10:48:23	00:00:28	7296	7477	180	13	7.3 %	55.3			0			28			3.8			Right	0.8
5	Orbit	10:48:23	10:48:48	00:00:25	7477	7595	118	29	25 %	53.4			0			25			2.8			Right	0.7
6	Orbit	10:48:48	10:49:12	00:00:24	7595	7746	150	3	2.2 %	54.7			0			24			3.7			Right	0.7
7	Orbit	10:49:12	10:49:14	00:00:02	7746	7762	16	0	0 %	63.8			0			02			4.9			Right	0.1
3	Thermal	10:51:40	10:53:00	00:01:20	7122	7749	626	62	9.9 %	56.8 53.8	40.4 51.4	95 56.2	179 251	32 236	267 267	20 28.5	3 28	29 29	5.2 2.8	2.3 2.3	9.8 3.3	Right	2.2	4
8	Orbit	10:51:40	10:52:00	00:00:20	7122	7454	331	3	1 %	55.4			0			20			9.8			Right	0.6
9	Orbit	10:52:00	10:52:28	00:00:28	7454	7608	154	19	12.8 %	51.4			0			28			3.3			Right	0.7
10	Orbit	10:52:28	10:52:57	00:00:29	7608	7723	114	39	34.3 %	56.2			0			29			2.3			Right	0.8
11	Orbit	10:52:57	10:53:00	00:00:03	7723	7749	26	0	0 %	64.2			0			03			5.2			Right	0.1
4	Thermal	11:02:07	11:06:29	00:04:22	5456	7660	2204	62	2.8 %	57 56	0 54	112.3 57.4	203 207	126 183	237 237	21.8 22.6	12 20	26 26	4.9 5.3	1.3 3.1	7 7	Right	7.6	12
14	Orbit	11:02:07	11:02:31	00:00:24	5456	5652	196	6	3.3 %	60.4			0			24			4.9			Right	0.7
15	Orbit	11:02:31	11:02:53	00:00:22	5652	5830	177	13	7.4 %	57.4			0			22			4.8			Right	0.6
16	Orbit	11:02:53	11:03:13	00:00:20	5830	6056	226	0	0 %	56.7			0			20			6.7			Right	0.6
17	Orbit	11:03:13	11:03:35	00:00:22	6056	6315	259	0	0 %	56.9			0			22			7			Right	0.6
18	Orbit	11:03:35	11:03:58	00:00:23	6315	6558	242	0	0 %	55.2			0			23			6.3			Right	0.7
19	Orbit	11:03:58	11:04:19	00:00:21	6558	6765	206	0	0 %	57.4			0			21			5.8			Right	0.6
20	Orbit	11:04:19	11:04:39	00:00:20	6765	6935	170	0	0 %	56			0			20			5.1			Right	0.6
21	Orbit	11:04:39	11:05:01	00:00:22	6935	7139	203	3	1.6 %	55.6			0			22			5.5			Right	0.6
22	Orbit	11:05:01	11:05:26	00:00:25	7139	7329	190	3	1.7 %	55.1			0			25			4.5			Right	0.7
23	Orbit	11:05:26	11:05:51	00:00:25	7329	7496	167	3	2 %	54			0			25			4			Right	0.7
24	Orbit	11:05:51	11:06:17	00:00:26	7496	7634	137	3	2.4 %	55.7			0			26			3.1			Right	0.7
25	Orbit	11:06:17	11:06:29	00:00:12	7634	7660	26	29	112.5 %	64.3			0			12			1.3			Right	0.4
5	Thermal	11:12:46	11:15:39	00:02:53	6768	8559	1791	26	1.5 %	55.8 55.7	36.6 53	82.9 57.6	197 208	163 184	230 230	21.6 22.8	17 20	26 26	6.1 6.1	1.8 4.3	10.5 6.7	Right	5	8
29	Orbit	11:12:46	11:13:05	00:00:19	6768	7106	337	0	0 %	54			0			19			10.5			Right	0.5
30	Orbit	11:13:05	11:13:30	00:00:25	7106	7375	269	6	2.4 %	56.1			0			25			6.4			Right	0.7
31	Orbit	11:13:30	11:13:53	00:00:23	7375	7634	259	0	0 %	56.3			0			23			6.7			Right	0.7
32	Orbit	11:13:53	11:14:14	00:00:21	7634	7857	223	0	0 %	57.6			0			21			6.3			Right	0.6
33	Orbit	11:14:14	11:14:34	00:00:20	7857	8080	223	0	0 %	56.1			0			20			6.6			Right	0.6
34	Orbit	11:14:34	11:14:56	00:00:22	8080	8316	236	3	1.4 %	55.1			0			22			6.4			Right	0.6
35	Orbit	11:14:56	11:15:22	00:00:26	8316	8507	190	6	3.4 %	53			0			26			4.3			Right	0.7
36	Orbit	11:15:22	11:15:39	00:00:17	8507	8559	52	9	18.8 %	58.6			0			17			1.8			Right	0.5
6	Thermal	11:20:03	11:23:11	00:03:08	7122	8700	1578	85	5.4 %	56.8 54.9	35.1 52.9	82.5 57.2	170 186	12 169	225 225	18.8 20.6	1 19	24 24	4.4 4.7	-1.9 1.9	8 6.9	Left	5.4	10
37	Orbit	11:20:03	11:20:25	00:00:22	7122	7421	298	13	4.4 %	57.4			0			22			8			Left	0.6
38	Orbit	11:20:25	11:20:45	00:00:20	7421	7654	232	0	0 %	55			0			20			6.9			Left	0.6
39	Orbit	11:20:45	11:21:04	00:00:19	7654	7844	190	0	0 %	54.8			0			19			5.9			Left	0.5
40	Orbit	11:21:04	11:21:24	00:00:20	7844	8047	203	0	0 %	55.8			0			20			6			Left	0.6
41	Orbit	11:21:24	11:21:44	00:00:20	8047	8172	124	9	7.9 %	52.9			0			20			3.7			Left	0.5
42	Orbit	11:21:44	11:22:05	00:00:21	8172	8343	170	0	0 %	53.7			0			21			4.8			Left	0.6
43	Orbit	11:22:05	11:22:27	00:00:22	8343	8487	144	22	15.9 %	55.7			0			22			3.9			Left	0.6
44	Orbit	11:22:27	11:22:46	00:00:19	8487	8628	141	6	4.7 %	54.2			0			19			4.4			Left	0.5
45	Orbit	11:22:46	11:23:10	00:00:24	8628	8704	75	29	39.1 %	57.2			0			24			1.9			Left	0.7
46	Orbit	11:23:10	11:23:11	00:00:01	8704	8700	-3	3	-100 %	71.2			0			01			-1.9			Left	0
7	Thermal	11:37:06	11:41:39	00:04:33	5216	7755	2539	82	3.2 %	53.4 53.8	0 53.2	103.6 55.6	199 205	132 175	229 229	22.8 23.3	17 20	26 26	5.4 5.8	-0.3 4.5	7.6 6.8	Mixed	7.5	12
50	Orbit	11:37:06	11:37:29	00:00:23	5216	5511	295	0	0 %	55			0			23			7.6			Right	0.7
51	Orbit	11:37:29	11:37:50	00:00:21	5511	5731	219	0	0 %	54.2			0			21			6.2			Right	0.6
52	Orbit	11:37:50	11:38:12	00:00:22	5731	5948	216	0	0 %	55.6			0			22			5.8			Right	0.6
53	Orbit	11:38:12	11:38:32	00:00:20	5948	6177	229	0	0 %	54.2			0			20			6.8			Right	0.6
54	Orbit	11:38:32	11:38:55	00:00:23	6177	6433	255	0	0 %	53.3			0			23			6.6			Right	0.6
55	Orbit	11:38:55	11:39:15	00:00:20	6433	6663	229	0	0 %	53.5			0			20			6.8			Right	0.6
56	Orbit	11:39:15	11:39:41	00:00:26	6663	6873	209	0	0 %	53.2			0			26			4.8			Right	0.7
57	Orbit	11:39:41	11:40:05	00:00:24	6873	7103	229	0	0 %	53.2			0			24			5.7			Right	0.7
58	Orbit	11:40:05	11:40:31	00:00:26	7103	7339	236	0	0 %	53.5			0			26			5.4			Right	0.7
59	Orbit	11:40:31	11:40:57	00:00:26	7339	7575	236	0	0 %	53.7			0			26			5.4			Right	0.7
60	Orbit	11:40:57	11:41:22	00:00:25	7575	7765	190	0	0 %	54.1			0			25			4.5			Right	0.7
61	Orbit	11:41:22	11:41:39	00:00:17	7765	7755	-9	82	-833.3 %	47.6			0			17			-0.3			Left	0.4
8	Thermal	11:44:09	11:46:42	00:02:33	7329	8385	1056	252	23.9 %	58.7 58.3	29.2 54.3	79.6 61.7	246 238	196 196	293 293	25.5 24.8	21 21	29 29	4.1 4.1	1.3 1.7	6.8 6.1	Right	4.6	6
62	Orbit	11:44:09	11:44:38	00:00:29	7329	7664	334	6	2 %	57			0			29			6.8			Right	0.9
63	Orbit	11:44:38	11:44:59	00:00:21	7664	7880	216	0	0 %	57.5			0			21			6.1			Right	0.6
64	Orbit	11:44:59	11:45:21	00:00:22	7880	8031	150	3	2.2 %	54.3			0			22			4.1			Right	0.6
65	Orbit	11:45:21	11:45:48	00:00:27	8031	8244	213	6	3.1 %	59.7			0			27			4.7			Right	0.8
66	Orbit	11:45:48	11:46:17	00:00:29	8244	8330	85	95	111.5 %	61.7			0			29			1.7			Right	0.9
67	Orbit	11:46:17	11:46:42	00:00:25	8330	8385	55	141	252.9 %	62.1			0			25			1.3			Right	0.8
9	Thermal	11:58:23	11:59:38	00:01:15	6774	7280	505	68	13.6 %	54.5 54.3	0 54.3	134.7 54.3	224 214	196 214	263 214	25 24	23 24	28 24	3.9 3.6	2.9 3.6	5.3 3.6	Left	2.1	3
74	Orbit	11:58:23	11:58:51	00:00:28	6774	7024	249	19	7.9 %	57.3			0			28			5.3			Left	0.8
75	Orbit	11:58:51	11:59:15	00:00:24	7024	7168	144	9	6.8 %	54.3			0			24			3.6			Left	0.7
76	Orbit	11:59:15	11:59:38	00:00:23	7168	7280	111	39	35.3 %	51.9			0			23			2.9			Left	0.6
10	Thermal	12:01:07	12:02:40	00:01:33	7148	7759	610	157	25.8 %	59.8 58.7	38.4 58.2	80.9 59.2	228 226	213 219	246 232	23.3 23.5	23 23	24 24	3.9 4.5	0.3 4	6.3 4.9	Right	2.9	4
77	Orbit	12:01:07	12:01:30	00:00:23	7148	7391	242	36	14.9 %	56.6			0			23			6.3			Right	0.7
78	Orbit	12:01:30	12:01:53	00:00:23	7391	7545	154	52	34 %	58.2			0			23			4			Right	0.7
79	Orbit	12:01:53	12:02:17	00:00:24	7545	7746	200	6	3.3 %	59.2			0			24			4.9			Right	0.7
80	Orbit	12:02:17	12:02:40	00:00:23	7746	7759	13	62	475 %	65.3			0			23			0.3			Right	0.8
11	Thermal	12:06:09	12:09:28	00:03:19	6955	8861	1906	78	4.1 %	55.6 55.9	38.3 55	76.9 56.8	257 207	191 201	571 216	28.4 22.6	21 22	65 24	6.5 6.8	2.7 5.5	9.2 7.4	Mixed	5.6	7
81	Orbit	12:06:09	12:06:30	00:00:21	6955	7280	324	0	0 %	55.7			0			21			9.2			Right	0.6
82	Orbit	12:06:30	12:06:52	00:00:22	7280	7552	272	0	0 %	56.2			0			22			7.3			Right	0.6
83	Orbit	12:06:52	12:07:14	00:00:22	7552	7805	252	0	0 %	55.7			0			22			6.8			Right	0.6
84	Orbit	12:07:14	12:07:36	00:00:22	7805	8080	275	0	0 %	56			0			22			7.4			Right	0.6
85	Orbit	12:07:36	12:08:00	00:00:24	8080	8356	275	0	0 %	55			0			24			6.8			Right	0.7
86	Orbit	12:08:00	12:08:23	00:00:23	8356	8569	213	0	0 %	56.8			0			23			5.5			Right	0.7
12	Thermal	12:15:10	12:17:22	00:02:12	7880	8740	859	324	37.8 %	56.5 55.5	42.7 54.2	80.9 57.3	204 189	171 171	242 210	22 20.8	19 19	26 23	4 5.6	-4.1 4.6	6.8 6.8	Right	3.8	6
88	Orbit	12:15:10	12:15:36	00:00:26	7880	8126	246	32	13.3 %	56.9			0			26			5.6			Right	0.8
89	Orbit	12:15:36	12:15:59	00:00:23	8126	8303	177	32	18.5 %	55.7			0			23			4.6			Right	0.7
90	Orbit	12:15:59	12:16:18	00:00:19	8303	8507	203	0	0 %	55			0			19			6.3			Right	0.5
91	Orbit	12:16:18	12:16:38	00:00:20	8507	8736	229	0	0 %	57.3			0			20			6.8			Right	0.6
92	Orbit	12:16:38	12:16:59	00:00:21	8736	8900	164	3	2 %	54.2			0			21			4.6			Right	0.6
93	Orbit	12:16:59	12:17:22	00:00:23	8900	8740	-160	255	-159.2 %	60			0			23			-4.1			Right	0.7
13	Thermal	12:29:45	12:33:52	00:04:07	4862	6837	1975	180	9.1 %	55.3 53.4	38.7 51	84.5 55.8	185 184	163 163	209 209	20.6 21	15 19	25 25	4.6 5.1	-2.6 4.2	6.2 5.8	Left	7	12
96	Orbit	12:29:45	12:30:07	00:00:22	4862	5091	229	22	10 %	57.4			0			22			6.2			Left	0.7
97	Orbit	12:30:07	12:30:32	00:00:25	5091	5301	209	0	0 %	51			0			25			5			Left	0.7
98	Orbit	12:30:32	12:30:54	00:00:22	5301	5482	180	0	0 %	51.3			0			22			4.9			Left	0.6
99	Orbit	12:30:54	12:31:16	00:00:22	5482	5685	203	0	0 %	53.4			0			22			5.5			Left	0.6
100	Orbit	12:31:16	12:31:36	00:00:20	5685	5882	196	0	0 %	53.8			0			20			5.8			Left	0.6
101	Orbit	12:31:36	12:31:55	00:00:19	5882	6069	187	3	1.8 %	52.3			0			19			5.8			Left	0.5
102	Orbit	12:31:55	12:32:15	00:00:20	6069	6259	190	0	0 %	52.3			0			20			5.6			Left	0.5
103	Orbit	12:32:15	12:32:35	00:00:20	6259	6437	177	3	1.9 %	54.7			0			20			5.2			Left	0.6
104	Orbit	12:32:35	12:32:57	00:00:22	6437	6591	154	26	17 %	54.1			0			22			4.2			Left	0.6
105	Orbit	12:32:57	12:33:17	00:00:20	6591	6751	160	3	2 %	55.8			0			20			4.8			Left	0.6
106	Orbit	12:33:17	12:33:37	00:00:20	6751	6902	150	6	4.3 %	55.6			0			20			4.5			Left	0.6
107	Orbit	12:33:37	12:33:52	00:00:15	6902	6837	-65	114	-175 %	71.9			0			15			-2.6			Left	0.6
14	Thermal	12:40:12	12:42:55	00:02:43	5000	6269	1269	42	3.4 %	55.4 55.8	26.8 52.6	83.6 57	211 219	180 215	224 224	23.3 24	20 23	26 26	4.7 4.8	2.7 3.9	6.1 5.4	Right	4.6	7
108	Orbit	12:40:12	12:40:32	00:00:20	5000	5206	206	9	4.8 %	55			0			20			6.1			Right	0.6
109	Orbit	12:40:32	12:40:55	00:00:23	5206	5410	203	0	0 %	57			0			23			5.2			Right	0.7
110	Orbit	12:40:55	12:41:18	00:00:23	5410	5620	209	0	0 %	57			0			23			5.4			Right	0.7
111	Orbit	12:41:18	12:41:42	00:00:24	5620	5823	203	3	1.6 %	55.6			0			24			5			Right	0.7
112	Orbit	12:41:42	12:42:06	00:00:24	5823	5994	170	0	0 %	56.9			0			24			4.2			Right	0.7
113	Orbit	12:42:06	12:42:32	00:00:26	5994	6164	170	3	1.9 %	52.6			0			26			3.9			Right	0.7
114	Orbit	12:42:32	12:42:55	00:00:23	6164	6269	104	26	25 %	53.4			0			23			2.7			Right	0.6
15	Thermal	12:46:07	12:49:36	00:03:29	5882	7913	2030	19	1 %	55.1 53.5	0 51.9	128.5 59	187 194	132 162	242 242	20.9 22.1	13 19	25 25	5.7 6	1.3 4.7	7.7 7.2	Left	5.9	10
117	Orbit	12:46:07	12:46:26	00:00:19	5882	6128	246	0	0 %	60.8			0			19			7.7			Left	0.6
118	Orbit	12:46:26	12:46:46	00:00:20	6128	6371	242	0	0 %	54.3			0			20			7.2			Left	0.6
119	Orbit	12:46:46	12:47:05	00:00:19	6371	6578	206	0	0 %	52.1			0			19			6.4			Left	0.5
120	Orbit	12:47:05	12:47:25	00:00:20	6578	6801	223	0	0 %	52.7			0			20			6.6			Left	0.5
121	Orbit	12:47:25	12:47:46	00:00:21	6801	7014	213	0	0 %	52.1			0			21			6			Left	0.6
122	Orbit	12:47:46	12:48:09	00:00:23	7014	7280	265	0	0 %	51.9			0			23			6.8			Left	0.6
123	Orbit	12:48:09	12:48:34	00:00:25	7280	7480	200	3	1.6 %	59			0			25			4.7			Left	0.8
124	Orbit	12:48:34	12:48:58	00:00:24	7480	7683	203	0	0 %	52.2			0			24			5			Left	0.6
125	Orbit	12:48:58	12:49:23	00:00:25	7683	7883	200	3	1.6 %	53.8			0			25			4.7			Left	0.7
126	Orbit	12:49:23	12:49:36	00:00:13	7883	7913	29	13	44.4 %	61.8			0			13			1.3			Left	0.4
16	Thermal	12:57:14	12:58:15	00:01:01	5941	6125	183	134	73.2 %	53.6 53.6	35.1 52.1	83.5 55.1	266 266	225 225	307 307	30.5 30.5	25 25	36 36	2 2	1 1	3 3	Mixed	1.7	2
128	Orbit	12:57:14	12:57:39	00:00:25	5941	6066	124	49	39.5 %	55.1			0			25			3			Left	0.7
129	Orbit	12:57:39	12:58:15	00:00:36	6066	6125	59	85	144.4 %	52.1			0			36			1			Right	1
17	Thermal	12:58:24	13:02:49	00:04:25	6194	8136	1942	36	1.9 %	55 55.1	40.5 53.8	95.9 59	200 215	36 170	348 348	22.1 23.8	4 19	36 36	4.3 4.3	2.7 2.7	5.7 5.7	Mixed	7.5	12
130	Orbit	12:58:24	12:58:47	00:00:23	6194	6391	196	0	0 %	54.1			0			23			5.1			Right	0.6
131	Orbit	12:58:47	12:59:14	00:00:27	6391	6561	170	0	0 %	55			0			27			3.7			Right	0.8
132	Orbit	12:59:14	12:59:39	00:00:25	6561	6742	180	0	0 %	53.9			0			25			4.3			Right	0.7
133	Orbit	12:59:39	13:00:15	00:00:36	6742	7037	295	0	0 %	59			0			36			4.9			Left	1.1
134	Orbit	13:00:15	13:00:35	00:00:20	7037	7230	193	0	0 %	54.8			0			20			5.7			Left	0.6
135	Orbit	13:00:35	13:00:54	00:00:19	7230	7358	127	0	0 %	54.6			0			19			4			Left	0.5
136	Orbit	13:00:54	13:01:15	00:00:21	7358	7539	180	0	0 %	54.7			0			21			5.1			Left	0.6
137	Orbit	13:01:15	13:01:36	00:00:21	7539	7667	127	13	10.3 %	54.4			0			21			3.6			Left	0.6
138	Orbit	13:01:36	13:01:59	00:00:23	7667	7834	167	3	2 %	55.8			0			23			4.3			Left	0.7
139	Orbit	13:01:59	13:02:21	00:00:22	7834	8001	167	0	0 %	54.7			0			22			4.5			Left	0.6
140	Orbit	13:02:21	13:02:45	00:00:24	8001	8110	108	19	18.2 %	53.8			0			24			2.7			Left	0.7
141	Orbit	13:02:45	13:02:49	00:00:04	8110	8136	26	0	0 %	54.7			0			04			3.9			Left	0.1
18	Thermal	13:13:56	13:16:39	00:02:43	3750	4376	626	147	23.6 %	52.2 52.5	38.1 50.6	69.8 54.2	199 198	166 166	222 222	23.3 23	20 20	25 25	2.2 2	1.1 1.1	4.2 2.7	Left	4.4	7
142	Orbit	13:13:56	13:14:21	00:00:25	3750	3927	177	9	5.6 %	52.9			0			25			4.2			Left	0.7
143	Orbit	13:14:21	13:14:46	00:00:25	3927	4015	88	36	40.7 %	54.2			0			25			2.1			Left	0.7
144	Orbit	13:14:46	13:15:08	00:00:22	4015	4055	39	26	66.7 %	52.2			0			22			1.1			Left	0.6
145	Orbit	13:15:08	13:15:32	00:00:24	4055	4163	108	9	9.1 %	53.9			0			24			2.7			Left	0.7
146	Orbit	13:15:32	13:15:52	00:00:20	4163	4238	75	13	17.4 %	50.6			0			20			2.2			Left	0.5
147	Orbit	13:15:52	13:16:16	00:00:24	4238	4307	68	39	57.1 %	51.4			0			24			1.7			Left	0.6
148	Orbit	13:16:16	13:16:39	00:00:23	4307	4376	68	13	19 %	50.1			0			23			1.8			Left	0.6

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 (70)

Glider 70 Thermal Info (Practice 2 Club)

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