Station HLNM4 - Search and Rescue Data

9087031 - Holland, MI
42.773 N 86.213 W (42°46'24" N 86°12'46" W)

Average surface winds - six hour block.

Date (UTC)	Average Wind Dir (True)	Average Wind Spd (Knots)	Wind Obs	Average Seas (Feet)	Air Temp. (Degrees F.)	Air Temp. Obs	Water Temp. (Degrees F.)	Water Temp. Obs
2023-12-08 1200Z	170	19	49	-	47	51	41	51
2023-12-08 0600Z	152	11	60	-	47	60	42	60
2023-12-08 0000Z	128	7	57	-	44	53	41	60
2023-12-07 1800Z	201	12	60	-	44	60	41	58
2023-12-07 1200Z	221	20	57	-	44	57	40	60
2023-12-07 0600Z	202	25	60	-	42	60	40	60
2023-12-07 0000Z	196	19	53	-	39	38	40	50
2023-12-06 1800Z	262	11	57	-	39	58	40	59
2023-12-06 1200Z	299	16	59	-	40	59	41	59
2023-12-06 0600Z	305	8	57	-	40	50	41	60
2023-12-06 0000Z	14	5	60	-	38	54	42	58
2023-12-05 1800Z	57	4	35	-	37	23	41	46
2023-12-05 1200Z	110	4	29	-	35	24	40	31
2023-12-05 0600Z	91	1	52	-	37	54	40	58
2023-12-05 0000Z	278	9	46	-	39	31	39	48
2023-12-04 1800Z	318	5	60	-	37	56	39	59
2023-12-04 1200Z	23	5	60	-	34	60	39	60
2023-12-04 0600Z	317	10	59	-	39	55	40	57
2023-12-04 0000Z	276	12	49	-	42	32	42	40
2023-12-03 1800Z	64	6	60	-	38	56	41	58

The six-hour averages are calculated as follows: