Madison, AL Weather (MadALwx) - Forecast Accuracy Report

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Updated: Sat, 21-Nov-2009 5:40am CST

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MadALwx's Forecast Accuracy Report on Temperatures vice NWS

National Weather Service (NW), Actual Observed (Act), MadAL WxSim Generated (WS)

I'm running 5 different comparison routines throughout the day to determine the accuracy timeframe of a forecast. Day+"x" are extended forecasts.
I run forecast models at 6am, 9am, 12pm, 3pm, and 6pm.

NWSs forecast for this area is w/in Forecast Goal MadALwx's forecast is w/in Forecast Goal

Morning Comparison (this forecast period is 4 days, 6AM today through Day +3)

Updated: 11-20-09 at 6:27 am

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	High			Low			High			Low			High			Low			High			Low
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
11-20-09	65		63	44		37	58		57	50		46	58		57	50		51	62		62	47		41
11-19-09	59	60.4	66	38	34.6	32	64		62	44		42	62		55	48		47	58		65	44		39
11-18-09	55	48.2	59	37	42.7	28	61	60.4	58	36	34.6	29	61		61	43		38	59		62	47		52
11-17-09	59	58.6	57	39	43.3	36	55	48.2	57	38	42.7	34	61	60.4	59	39	34.6	34	61		59	44		40
11-16-09	71	69.8	70	51	48.9	56	57	58.6	58	36	43.3	40	58	48.2	57	35	42.7	34	61	60.4	58	41	34.6	36
11-15-09	73	73.3	73	44	39.3	40	73	69.8	70	48	48.9	58	59	58.6	68	45	43.3	50	60	48.2	65	44	42.7	45
11-14-09	73	69.7	72	40	38.0	41	73	73.3	72	48	39.3	40	73	69.8	73	51	48.9	47	66	58.6	74	50	43.3	57
11-13-09	69	70.9	71	43	38.2	37	74	69.7	73	46	38.0	39	75	73.3	73	49	39.3	40	74	69.8	72	51	48.9	50
11-12-09	63	62.3	64	39	39.3	33	69	70.9	68	41	38.2	37	73	69.7	72	45	38.0	37	74	73.3	72	51	39.3	42
11-11-09	61	64.1	69	43	41.3	41	64	62.3	65	39	39.3	36	70	70.9	71	46	38.2	47	73	69.7	72	50	38.0	37
11-10-09	63	60.8	58	48	53.9	53	64	64.1	64	44	41.3	42	65	62.3	62	43	39.3	35	70	70.9	66	45	38.2	44
11-09-09	71	70.2	78	53	57.7	53	65	60.8	59	47	53.9	49	64	64.1	64	39	41.3	41	64	62.3	63	41	39.3	37
11-08-09	77	73.5	78	48	51.6	50	70	70.2	79	53	57.7	58	64	60.8	64	47	53.9	48	64	64.1	65	40	41.3	40
11-07-09	72	73.9	77	42	42.0	44	74	73.5	80	49	51.6	52	71	70.2	78	54	57.7	61	66	60.8	70	46	53.9	52
11-06-09	71	68.2	68	40	38.7	35	72	73.9	73	43	42.0	39	74	73.5	76	50	51.6	49	69	70.2	79	54	57.7	62
11-05-09	64	65.5	65	35	33.6	34	68	68.2	67	39	38.7	36	71	73.9	71	44	42.0	36	73	73.5	74	51	51.6	51
11-04-09	65	71.0	66	45	39.2	40	65	65.5	64	35	33.6	37	65	68.2	67	45	38.7	40	45	73.9	71	45	42.0	43
11-03-09	65	66.8	66	37	36.5	38	67	71.0	67	41	39.2	41	64	65.5	66	39	33.6	38	67	68.2	66	40	38.7	42
11-02-09	65	69.1	68	45	41.3	40	65	66.8	63	35	36.5	38	65	71.0	65	45	39.2	39			60			34
11-01-09	65	61.3	60	35	40.5	33	65	69.1	65	45	41.3	39	65	66.8	63	35	36.5	37	65	71.0	63	40	39.2	38
10-31-09	60	59.0	59	40	38.3	36	65	61.3	60	35	40.5	36	65	69.1	65	45	41.3	38	65	66.8	59	40	36.5	35
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	11		11	8		10	12		9	8		8	9		7	4		8	9		4	6		9
% Succ	55.0		55.0	40.0		50.0	63.2		47.4	42.1		42.1	50.0		38.9	22.2		44.4	56.3		25.0	37.5		56.3
Ave Error	2.4		2.7	3.2		3.5	2.2		3.0	3.5		3.1	2.6		3.2	4.6		3.4	4.7		5.4	4.4		2.8
Net Error	0.2		1.4	0.2		-1.9	0.4		0.2	-0.1		-1.1	0.3		1.0	2.0		-0.5	-0.4		1.7	2.7		1.6
Std Dev	1.8		2.8	2.0		3.6	1.9		2.7	2.8		2.7	2.4		3.1	3.0		2.9	4.0		5.5	4.1		3.3

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Afternoon1 Comparison (this forecast period is 4 days, 9AM today through Day +3)

Updated: 11-20-09 at 9:26 am

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	High			Low			High			Low			High			Low			High			Low
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
11-20-09	65		68	44		42	58		58	50		50	58		56	50		45	62		64	47		39
11-19-09	59	60.4	61	38	34.6	29	64		62	44		36	62		59	48		48	58		60	44		51
11-18-09	55	48.2	58	37	41.2	28	61	60.4	59	36	34.6	28	61		60	43		37	59		58	47		46
11-17-09	51	58.6	55	39	43.2	32	55	48.2	57	38	41.2	31	61	60.4	58	39	34.6	33	61		60	44		39
11-16-09	71	69.8	79	51	44.6	59	57	58.6	63	36	43.2	43	58	48.2	63	35	41.2	41	61	60.4	64	41	34.6	40
11-15-09	73	73.3	77	44	39.3	46	73	69.8	73	48	44.6	60	59	58.6	68	45	43.2	47	60	48.2	63	44	41.2	42
11-14-09	73	69.7	77	40	37.9	46	73	73.3	75	48	39.3	44	73	69.8	74	51	44.6	54	66	58.6	72	50	43.2	64
11-13-09	69	70.9	75	43	38.2	40	74	69.7	75	46	37.9	43	75	73.3	75	49	39.3	45	74	69.8	72	51	44.6	55
11-12-09	63	62.3	68	39	39.3	34	69	70.9	69	41	38.2	37	73	69.7	73	45	37.9	39	74	73.3	72	51	39.3	43
11-11-09	61	64.1	69	43	41.3	39	64	62.3	63	39	39.3	36	70	70.9	67	46	38.2	40	73	69.7	73	50	37.9	39
11-10-09	63	60.8	58	48	52.5	49	64	64.1	64	44	41.3	42	65	62.3	66	43	39.3	37	70	70.9	68	45	38.2	49
11-09-09	71	70.2	81	53	56.6	55	65	60.8	60	47	52.5	53	64	64.1	67	39	41.3	42	64	62.3	64	41	39.3	41
11-08-09	77	73.5	83	48	51.6	59	70	70.2	79	53	56.6	60	64	60.8	67	47	52.5	50	64	64.1	61	40	41.3	39
11-07-09	72	73.9	84	42	42.0	49	74	73.5	83	49	51.6	53	71	70.2	79	54	56.6	60	66	60.8	73	46	52.5	46
11-06-09	71	68.2	74	40	38.7	41	72	73.9	75	43	42.0	42	74	73.5	77	50	51.6	49	69	70.2	72	54	56.6	56
11-05-09	64	65.5	70	35	33.6	39	68	68.2	70	39	38.7	38	71	73.9	74	44	42.0	39	73	73.5	75	51	51.6	50
11-04-09	65	71.0	74	45	39.0	44	65	65.5	68	35	33.6	39	65	68.2	69	45	38.7	42	45	73.9	72	45	42.0	44
11-03-09	65	66.8	65	37	36.5	40	67	71.0	70	41	39.0	43	64	65.5	67	39	33.6	39	67	68.2	68	40	38.7	42
11-02-09	68	69.1	73	45	41.4	44	66	66.8	66	37	36.5	40	66	71.0	67	41	39.0	40	65	65.5	61	38	33.6	37
11-01-09	61	61.3	64	37	40.5	36	68	69.1	65	45	41.4	38	67	66.8	59	35	36.5	37	66	71.0	63	41	39.0	35
10-31-09	59	59.0	61	39	38.3	39	63	61.3	60	37	40.5	36	67	69.1	65	43	41.4	38	63	66.8	58	41	36.5	37
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	12		3	7		3	14		11	7		7	9		4	6		7	9		6	5		7
% Succ	60.0		15.0	35.0		15.0	73.7		57.9	36.8		36.8	50.0		22.2	33.3		38.9	52.9		35.3	29.4		41.2
Ave Error	2.4		5.3	3.0		5.6	1.9		3.1	3.3		3.9	2.3		4.6	4.3		2.9	4.5		5.0	4.8		4.6
Net Error	-0.3		4.5	0.6		0.9	0.5		1.9	0.5		0.7	0.6		2.2	2.1		1.1	-0.4		1.4	3.5		2.9
Std Dev	2.1		3.2	1.9		3.8	1.9		3.0	2.7		3.9	2.3		3.9	2.8		2.4	7.0		4.8	3.9		5.4

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Afternoon2 Comparison (this forecast period is 4 days, 12PM today through Day +3)

Updated: 11-20-09 at 12:26 pm

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	High			Low			High			Low			High			Low			High			Low
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
11-20-09	65		64	44		43	58		54	50		47	58		55	50		43	62		64	47		37
11-19-09	59	60.4	60	38	34.6	29	64		60	44		35	62		58	48		47	58		59	44		50
11-18-09	54	48.2	54	37	41.2	26	61	60.4	59	36	34.6	28	61		61	43		38	59		59	47		46
11-17-09	49	58.6	49	39	43.2	30	55	48.2	56	38	41.2	32	61	60.4	57	39	34.6	32	61		59	44		38
11-16-09	71	69.8	72	51	44.6	54	57	58.6	58	36	43.2	39	58	48.2	57	35	41.2	35	61	60.4	62	41	34.6	35
11-15-09	73	73.3	74	44	39.3	41	73	69.8	69	48	44.6	59	59	58.6	67	45	43.2	45	60	48.2	62	44	41.2	41
11-14-09	72	69.7	73	40	37.9	43	73	73.3	73	48	39.3	39	73	69.8	71	51	44.6	48	66	58.6	64	50	43.2	56
11-13-09	69	70.9	72	43	38.2	38	74	69.7	73	46	37.9	42	75	73.3	73	49	39.3	44	74	69.8	72	51	44.6	54
11-12-09	63	62.3	63	39	39.3	31	69	70.9	67	41	38.2	36	73	69.7	72	45	37.9	37	74	73.3	73	51	39.3	39
11-11-09	62	64.1	63	43	41.3	36	64	62.3	60	39	39.3	33	70	70.9	67	46	38.2	39	71	69.7	73	50	37.9	38
11-10-09	63	60.8	58	48	52.5	48	64	64.1	64	44	41.3	41	65	62.3	65	43	39.3	36	70	70.9	68	45	38.2	47
11-09-09	70	70.2	76	53	56.7	54	65	60.8	58	47	52.5	51	64	64.1	65	39	41.3	39	64	62.3	64	41	39.3	39
11-08-09	75	73.5	78	48	51.6	52	70	70.2	77	53	56.7	57	64	60.8	63	47	52.5	51	64	64.1	63	40	41.3	41
11-07-09	73	73.9	71	42	42.1	37	74	73.5	81	49	51.6	50	71	70.2	82	54	56.7	61	66	60.8	72	46	52.5	51
11-06-09	71	68.2	70	40	38.7	38	72	73.9	74	43	42.1	43	74	73.5	78	50	51.6	50	69	70.2	75	54	56.7	56
11-05-09	64	65.5	65	35	33.6	30	68	68.2	66	39	38.7	36	71	73.9	73	44	42.1	37	73	73.5	75	51	51.6	49
11-04-09	69	71.0	71	41	39.0	44	62	65.5	66	36	33.6	39	68	68.2	69	40	38.7	39	72	73.9	72	42	42.1	39
11-03-09	65	66.8	66	37	36.5	36	67	71.0	66	41	39.0	40	64	65.5	66	39	33.6	37	67	68.2	66	40	38.7	40
11-02-09	68	69.1	69	45	41.4	40	66	66.8	63	37	36.5	38	66	71.0	67	41	39.0	39	65	65.5	61	38	33.6	36
11-01-09	61	61.3	63	37	40.5	37	68	69.1	66	45	41.4	40	67	66.8	60	35	36.5	36	66	71.0	63	41	39.0	36
10-31-09	59	59.0	62	39	38.3	39	63	61.3	62	37	40.5	37	67	69.1	66	43	41.4	37	63	66.8	57	41	36.5	34
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	14		11	8		7	13		8	6		9	10		6	7		8	11		6	6		9
% Succ	70.0		55.0	40.0		35.0	68.4		42.1	31.6		47.4	55.6		33.3	38.9		44.4	64.7		35.3	35.3		52.9
Ave Error	2.0		2.4	2.8		4.6	2.0		2.8	3.3		3.5	2.2		3.7	4.1		2.6	2.8		4.5	4.6		2.9
Net Error	-0.3		0.6	0.4		-2.4	0.4		0.0	0.6		-0.6	0.8		1.2	1.9		-0.5	1.0		0.9	3.3		1.2
Std Dev	2.1		2.4	1.8		4.1	1.9		2.5	2.6		3.7	2.3		3.4	2.9		1.9	3.2		4.1	4.0		3.9

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Evening Comparison (this forecast period is 4 days, 3PM today through Day +3)

Updated: 11-20-09 at 3:26 pm

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	High			Low			High			Low			High			Low			High			Low
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
11-20-09	66		64	43		40	59		62	48		48	58		54	47		40	64		65	45		38
11-19-09	61	60.4	61	37	34.6	30	65		59	40		35	61		59	48		50	59		60	44		53
11-18-09	54	48.2	54	35	41.2	26	61	60.4	59	36	34.6	28	64		62	42		38	62		59	44		46
11-17-09	49	58.6	50	39	43.2	29	55	48.2	56	38	41.2	27	61	60.4	58	39	34.6	29	61		59	44		38
11-16-09	71	69.8	70	51	44.6	52	57	58.6	55	36	43.2	36	58	48.2	59	35	41.2	34	61	60.4	61	41	34.6	40
11-15-09	73	73.3	73	41	39.3	40	70	69.8	74	49	44.6	58	58	58.6	60	39	43.2	40	59	48.2	58	39	41.2	35
11-14-09	72	69.7	69	44	37.9	42	71	73.3	73	44	39.3	40	71	69.8	71	50	44.6	57	59	58.6	63	43	43.2	42
11-13-09	69	70.9	73	42	38.2	38	73	69.7	73	46	37.9	41	74	73.3	74	49	39.3	43	73	69.8	72	51	44.6	54
11-12-09	63	62.3	62	38	39.3	34	68	70.9	67	40	38.2	35	73	69.7	72	44	37.9	39	74	73.3	73	47	39.3	40
11-11-09	62	64.1	64	41	41.3	36	64	62.3	60	38	39.3	32	69	70.9	68	45	38.2	38	71	69.7	72	50	37.9	37
11-10-09	63	60.8	57	48	52.5	48	64	64.1	64	44	41.3	42	65	62.3	67	43	39.3	37	70	70.9	68	45	38.2	46
11-09-09	70	70.2	71	54	56.7	54	67	60.8	57	50	52.5	49	65	64.1	68	44	41.3	41	66	62.3	66	41	39.3	41
11-08-09	75	73.5	74	50	51.6	48	71	70.2	73	53	56.7	55	63	60.8	58	47	52.5	51	64	64.1	60	40	41.3	37
11-07-09	74	73.9	74	43	42.1	40	75	73.5	79	50	51.6	51	71	70.2	80	52	56.7	58	66	60.8	67	47	52.5	52
11-06-09	71	68.2	68	41	38.7	41	72	73.9	75	44	42.1	41	74	73.5	76	50	51.6	47	70	70.2	73	54	56.7	53
11-05-09	35	65.5	65	65	33.6	32	45	68.2	67	75	38.7	36	45	73.9	71	75	42.1	38	55	73.5	76	65	51.6	54
11-04-09	69	71.0	71	41	39.0	43	64	65.5	67	37	33.6	38	68	68.2	67	42	38.7	42	71	73.9	73	45	42.1	45
11-03-09	65	66.8	67	37	36.5	35	68	71.0	67	41	39.0	41	63	65.5	65	38	33.6	37	67	68.2	66	40	38.7	38
11-02-09	68	69.1	69	44	41.4	38	64	66.8	64	37	36.5	37	67	71.0	65	43	39.0	40	64	65.5	60	39	33.6	35
11-01-09	61	61.3	62	36	40.5	37	68	69.1	66	44	41.4	39	67	66.8	67	37	36.5	40	66	71.0	67	41	39.0	42
10-31-09	59	59.0	59	43	38.3	42	62	61.3	64	40	40.5	38	68	69.1	67	43	41.4	41	63	66.8	62	41	36.5	35
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	13		16	7		4	11		6	8		7	11		6	3		7	9		3	5		8
% Succ	65.0		80.0	35.0		20.0	57.9		31.6	42.1		36.8	61.1		33.3	16.7		38.9	52.9		17.6	29.4		47.1
Ave Error	3.4		1.3	4.5		4.5	3.3		2.9	4.7		4.1	3.5		3.2	6.0		3.3	3.5		3.5	4.9		3.2
Net Error	-1.6		-0.2	2.0		-2.3	-1.0		0.1	2.6		-1.5	-0.9		0.9	3.5		0.0	-0.5		0.6	3.5		0.9
Std Dev	6.6		2.2	6.5		3.9	5.1		2.0	7.8		4.1	6.6		3.0	7.1		3.1	4.8		2.7	4.2		2.9

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Night Comparison (this forecast period is 4 days, 6PM today through Day +3)

Updated: 11-20-09 at 6:26 pm

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	Low			High			Low			High			Low			High			Low			High
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
11-20-09	43		40	59		62	48		48	58		54	47		41	64		64	45		38	61		65
11-19-09	37	34.6	29	65	60.4	57	40		34	61		59	48		50	59		60	44		53	62		65
11-18-09	35	41.2	28	61	48.2	58	36	34.6	29	64	60.4	60	42		37	62		60	44		40	60		65
11-17-09	39	43.2	30	55	58.6	57	38	41.2	28	61	48.2	59	39	34.6	30	61	60.4	59	44		38	65		60
11-16-09	52	44.6	51	55	69.8	55	39	43.2	36	56	58.6	58	39	41.2	34	62	48.2	61	39	34.6	40	63	60.4	66
11-15-09	41	39.3	38	70	73.3	65	49	44.6	55	58	69.8	56	39	43.2	39	59	58.6	56	39	41.2	34	64	48.2	60
11-14-09	44	37.9	43	71	69.7	69	44	39.3	43	71	73.3	68	50	44.6	51	59	69.8	55	43	43.2	36	58	58.6	56
11-13-09	42	38.2	37	73	70.9	67	46	37.9	40	74	69.7	71	49	39.3	43	73	73.3	71	51	44.6	47	63	69.8	70
11-12-09	38	39.4	36	68	62.3	69	40	38.2	36	73	70.9	72	44	37.9	40	74	69.7	72	47	39.3	40	72	73.3	73
11-11-09	41	41.3	37	64	64.1	60	38	39.4	34	69	62.3	68	45	38.2	39	71	70.9	72	50	37.9	38	73	69.7	73
11-10-09	49	52.5	47	62	60.8	64	40	41.3	39	65	64.1	67	44	39.4	36	70	62.3	68	45	38.2	46	74	70.9	74
11-09-09	54	56.7	54	67	70.2	57	50	52.5	49	65	60.8	68	44	41.3	41	66	64.1	65	41	39.4	41	71	62.3	57
11-08-09	50	51.6	45	71	73.5	70	53	56.7	56	63	70.2	60	47	52.5	52	64	60.8	61	40	41.3	41	65	64.1	60
11-07-09	43	42.1	39	75	73.9	76	50	51.6	45	71	73.5	73	52	56.7	54	66	70.2	63	47	52.5	48	64	60.8	62
11-06-09	41	38.7	39	72	68.2	74	44	42.1	42	74	73.9	76	50	51.6	51	70	73.5	75	54	56.7	58	66	70.2	72
11-05-09	35	33.6	29	69	65.5	66	41	38.7	36	71	68.2	73	44	42.1	39	72	73.9	76	51	51.6	51	68	73.5	66
11-04-09	41	39.0	41	64	71.0	65	37	33.6	37	68	65.5	66	42	38.7	41	71	68.2	72	45	42.1	44	73	73.9	73
11-03-09	37	36.5	32	68	66.8	65	41	39.0	39	63	71.0	64	38	33.6	37	67	65.5	65	40	38.7	38	72	68.2	69
11-02-09	45	41.4	38	65	69.1	62	35	36.5	36	65	66.8	64	45	39.0	39	67	71.0	59	42	33.6	35			62
11-01-09	36	40.5	32	68	61.3	64	44	41.4	33	67	69.1	63	37	36.5	37	66	66.8	65	41	39.0	41	66	71.0	59
10-31-09	43	38.3	40	62	59.0	63	40	40.5	38	68	61.3	66	43	41.4	40	63	69.1	61	41	36.5	35	66	66.8	64
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	8		5	5		4	9		4	3		6	4		7	8		7	6		11	5		6
% Succ	40.0		25.0	25.0		20.0	47.4		21.1	15.8		31.6	22.2		38.9	44.4		38.9	35.3		64.7	31.3		37.5
Ave Error	3.1		4.8	4.3		5.2	2.8		4.2	4.5		4.6	4.2		2.6	3.8		4.5	4.2		2.7	4.2		4.0
Net Error	0.6		-3.3	0.4		-1.7	0.7		-2.2	0.4		-0.3	2.2		-0.5	0.3		-1.1	2.7		0.2	1.0		-0.5
Std Dev	2.0		3.5	3.8		4.0	1.9		3.6	3.6		4.1	2.5		2.1	3.9		4.4	3.5		2.8	4.1		3.4

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

The forecast software I use, WXSIM, has the ability to apply a 'learned bias'. As more forecast models are run, WXSIM will apply this bias, which will then improve forecast accuracy. I run the bias routine once a week.
This will in turn, point to a particular model runtime for the most accurate 4-Day Forecast time to use.
I'm mainly concerned with forecast accuracy of the current timeframe up to Day +2.

The graph depicts how my forecasts compare relative to normal.

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