KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 11/02/2025 1800 UTC
KCVG NAM MOS GUIDANCE 11/02/2025 1200 UTC

Date/Time UTC	11/2 18:00 Sun	11/2 21:00 Sun	11/3 00:00 Mon	11/3 03:00 Mon	11/3 06:00 Mon	11/3 09:00 Mon	11/3 12:00 Mon	11/3 15:00 Mon	11/3 18:00 Mon	11/3 21:00 Mon	11/4 00:00 Tue	11/4 03:00 Tue	11/4 06:00 Tue	11/4 09:00 Tue	11/4 12:00 Tue	11/4 15:00 Tue	11/4 18:00 Tue	11/4 21:00 Tue	11/5 00:00 Wed	11/5 03:00 Wed	11/5 06:00 Wed	11/5 12:00 Wed	11/5 18:00 Wed
Date/Time Local	11/2 13:00 Sun	11/2 16:00 Sun	11/2 19:00 Sun	11/2 22:00 Sun	11/3 01:00 Mon	11/3 04:00 Mon	11/3 07:00 Mon	11/3 10:00 Mon	11/3 13:00 Mon	11/3 16:00 Mon	11/3 19:00 Mon	11/3 22:00 Mon	11/4 01:00 Tue	11/4 04:00 Tue	11/4 07:00 Tue	11/4 10:00 Tue	11/4 13:00 Tue	11/4 16:00 Tue	11/4 19:00 Tue	11/4 22:00 Tue	11/5 01:00 Wed	11/5 07:00 Wed	11/5 13:00 Wed
GFS-N/X	--	--					38				59				39				64			48
NAM-N/X							39				53				36				58	--		46	--
GFS-TMP	--	--	48	44	42	40	40	47	55	57	50	47	45	42	40	51	61	63	56	53	53	50	64
NAM-TMP	49	50	48	46	44	42	40	44	50	52	48	47	44	40	38	45	54	58	51	--	50	51	--
GFS-DPT	--	--	41	39	37	36	35	37	36	35	35	35	35	34	32	33	32	33	36	40	42	43	47
NAM-DPT	39	40	41	41	40	38	37	38	39	39	38	36	33	30	28	32	33	33	33	--	34	40	--
GFS-CLD	--	--	FW	CL	CL	CL	CL	FW	FW	FW	CL	CL	CL	CL	CL	CL	CL	FW	FW	CL	CL	CL	FW
NAM-CLD	OV	OV	OV	OV	BK	SC	FW	SC	BK	FW	CL	CL	CL	CL	CL	FW	SC	CL	SC	--	SC	BK	--
GFS-WDR	--	--	28	22	24	25	23	24	26	27	27	27	28	27	21	19	19	18	17	19	20	22	24
NAM-WDR	09	11	19	23	24	23	23	22	24	25	26	26	27	28	25	20	20	19	16	--	19	21	--
GFS-WSP	--	--	03	04	05	05	06	11	14	11	07	05	05	03	02	06	08	08	07	08	11	13	16
NAM-WSP	04	02	02	03	03	04	06	09	12	11	06	05	05	02	02	02	06	07	06	--	09	12	--
GFS-P06	--	--			1		1		0		0		0		0		0		0		4	1	3
NAM-P06			10		2		0		1		0		0		2		4		4	--	4	6	--
GFS-P12	--	--					3				0				0				0			4
NAM-P12							2				1				2				4	--		6	--
GFS-Q06	--	--			0		0		0		0		0		0		0		0		0	0	0
NAM-Q06			0		0		0		0		0		0		0		0		0	--	0	0	--
GFS-Q12	--	--					0				0				0				0			0
NAM-Q12							0				0				0				0	--		0	--
GFS-T06	--	--			0/ 0		0/ 7		0/ 0		0/ 7		0/12		0/ 4		0/ 0		0/ 5		0/11		0/ 2
NAM-T06			0/ 0		0/ 0		0/ 5		0/ 4		0/ 6		0/10		0/ 2		0/ 0		0/12	--		1/ 4	--
GFS-T12	--	--							0/ 9				1/18				0/ 7				0/17		1/ 3
NAM-T12					0/ 4				0/ 5				0/10				0/ 2			--	1/14		--
GFS-POZ	--	--	0	0	0	0	0	0	0	0	0	0	1	0	1	0	0	0	0	0	0	0	0
NAM-POZ	0	0	0	0	1	0	0	0	1	0	0	2	1	8	7	3	0	0	0	--	0	0	--
GFS-POS	--	--	0	0	0	0	0	0	0	0	0	0	0	10	7	0	0	0	0	0	0	0	0
NAM-POS	0	1	1	2	0	6	0	0	0	0	0	0	4	28	21	9	0	0	0	--	0	2	--
GFS-TYP	--	--	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R
NAM-TYP	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	--	R	R	--
GFS-SNW	--	--													0							0
NAM-SNW							0								0					--		0	--
GFS-CIG	--	--	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
NAM-CIG	5	6	6	6	8	8	8	8	7	8	8	8	8	8	8	8	8	8	8	--	8	8	--
GFS-VIS	--	--	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
NAM-VIS	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	--	7	7	--
GFS-OBV	--	--	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N
NAM-OBV	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	--	N	N	--

Entries of "--" indicate that the current model run does not include forecast data for the time period.

Descriptions of MOS Elements

DT = The day of the month, denoted by the standard three or four letter abbreviation
HR = Hour of the day in UTC time. This is the hour at which the forecast is valid, or if the forecast is valid for a period, the end of the forecast period.
N/X = nighttime minimum/daytime maximum surface temperatures.
TMP = surface temperature valid at that hour.
DPT = surface dewpoint valid at that hour.
CLD = forecast categories of total sky cover valid at that hour.
WDR = forecasts of the 10-meter wind direction at the hour, given in tens of degrees.
WSP = forecasts of the 10-meter wind speed at the hour, given in knots.
P06 = probability of precipitation (PoP) during a 6-h period ending at that time.
P12 = PoP during a 12-h period ending at that time.
Q06 = quantitative precipitation forecast (QPF) category for liquid equivalent precipitation amount during a 6-h period ending at that time.
Q12 = QPF category for liquid equivalent precipitation amount during a 12-h period ending at the indicated time.
T06 = probability of thunderstorms/conditional probability of severe thunderstorms during the 6-hr period ending at the indicated time.
T12 = probability of thunderstorms/conditional probability of severe thunderstorms during the 12-hr period ending at the indicated time.
SNW = snow fall categorical forecasts during a 24-h period ending at the indicated time.
POZ = conditional probability of freezing pcp occurring at the hour.
POS = conditional probability of snow occurring at the hour.
TYP = conditional precipitation type at the hour.
CIG = ceiling height categorical forecasts at the hour.
VIS = visibility categorical forecasts at the hour.
OBV = obstruction to vision categorical forecasts at the hour.

Definitions of Categorical Elements

QPF Categories
0	no precipitation
1	0.01 to 0.09 inches
2	0.10 to 0.24 inches
3	0.25 to 0.49 inches
4	0.50 to 0.99 inches
5	1.00 to 1.99 inches
6	2.00 inches or greater

Snow Fall Amount Categories
0	no snow or a trace expected
1	> a trace to < 2 inches
2	2 to < 4 inches
4	4 to < 6 inches
6	6 to < 8 inches
8	> = 8 inches

Visibility (VIS) Categories
1	< 1/2 miles
2	1/2 - < 1 miles
3	1 - < 2 miles
4	2 - < 3 miles
5	3 - 5 miles
6	6 miles
7	> 6 miles

Ceiling Height (CIG) Categories
1	< 200 feet
2	200 - 400 feet
3	500 - 900 feet
4	1000 - 1900 feet
5	2000 - 3000 feet
6	3100 - 6500 feet
7	6600 - 12,000 feet
8	> 12,000 feet

Cloud (CLD) Categories
CL	clear
FW	> 0 to 2 octas of total sky cover
SC	> 2 to 4 octas of total sky cover
BK	> 4 to < 8 octas of total sky cover
OV	8 octas of total sky cover or totally obscured

Precipitation Type (TYP) Categories
S	pure snow or snow grains
Z	freezing rain/drizzle, ice pellets, or
	anything mixed with freezing precip
R	pure rain/drizzle or rain mixed with snow

MAV Obstruction to Vision (OBV) Categories
N	none of the following
HZ	haze, smoke, dust
BR	mist (fog with visibility >= 5/8 mile)
FG	fog or ground fog (visibility < 5/8 mile)
BL	blowing dust, sand, snow

MOS element descriptions and definitions are adapted from the NWS Meteorological Development Laboratory's web site.

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