KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 4/27/2025 0000 UTC
KCVG NAM MOS GUIDANCE 4/27/2025 0000 UTC

Date/Time UTC	4/27 06:00 Sun	4/27 09:00 Sun	4/27 12:00 Sun	4/27 15:00 Sun	4/27 18:00 Sun	4/27 21:00 Sun	4/28 00:00 Mon	4/28 03:00 Mon	4/28 06:00 Mon	4/28 09:00 Mon	4/28 12:00 Mon	4/28 15:00 Mon	4/28 18:00 Mon	4/28 21:00 Mon	4/29 00:00 Tue	4/29 03:00 Tue	4/29 06:00 Tue	4/29 09:00 Tue	4/29 12:00 Tue	4/29 18:00 Tue	4/30 00:00 Wed
Date/Time Local	4/27 02:00 Sun	4/27 05:00 Sun	4/27 08:00 Sun	4/27 11:00 Sun	4/27 14:00 Sun	4/27 17:00 Sun	4/27 20:00 Sun	4/27 23:00 Sun	4/28 02:00 Mon	4/28 05:00 Mon	4/28 08:00 Mon	4/28 11:00 Mon	4/28 14:00 Mon	4/28 17:00 Mon	4/28 20:00 Mon	4/28 23:00 Mon	4/29 02:00 Tue	4/29 05:00 Tue	4/29 08:00 Tue	4/29 14:00 Tue	4/29 20:00 Tue
GFS-X/N							67				47				77				63		78
NAM-X/N							67				48				74				62		76
GFS-TMP	49	46	45	56	63	66	61	56	54	50	51	64	73	77	75	69	65	64	66	73	69
NAM-TMP	49	46	46	56	63	66	62	57	54	51	51	61	69	73	70	68	66	65	65	73	70
GFS-DPT	38	37	37	36	35	34	34	35	36	37	38	40	44	49	52	55	56	56	57	61	58
NAM-DPT	41	41	41	38	36	36	37	40	40	40	40	43	48	51	53	57	57	57	58	62	61
GFS-CLD	CL	CL	FW	FW	CL	CL	FW	CL	CL	CL	FW	SC	FW	SC	SC	CL	FW	BK	OV	OV	OV
NAM-CLD	CL	CL	SC	SC	CL	CL	FW	CL	CL	FW	SC	FW	SC	BK	BK	SC	SC	OV	OV	OV	OV
GFS-WDR	06	08	08	09	09	10	10	10	10	10	10	13	17	18	16	17	18	19	20	22	25
NAM-WDR	07	09	10	10	09	09	10	10	11	11	09	14	18	17	16	17	18	19	20	22	24
GFS-WSP	06	05	04	10	10	08	06	06	06	05	06	07	08	09	07	07	09	11	13	15	07
NAM-WSP	04	04	04	08	08	07	06	04	05	06	05	06	07	08	07	09	11	11	13	13	09
GFS-P06			1		0		0		1		3		7		0		0		27	40	52
NAM-P06			3		2		0		0		3		2		1		1		16	18	36
GFS-P12							0				4				7				28		69
NAM-P12							3				3				2				16		44
GFS-Q06			0		0		0		0		0		0		0		0		0	1	3
NAM-Q06			0		0		0		0		0		0		0		0		0	0	0
GFS-Q12							0				0				0				0		2
NAM-Q12							0				0				0				0		1
GFS-T06			0/ 0		0/ 0		2/ 0		0/ 0		2/ 0		3/ 4		2/ 0		3/ 0		17/ 3		52/26
NAM-T06			0/ 0		0/ 0		0/ 0		0/ 0		1/ 0		1/ 2		8/ 8		6/ 7		11/ 6		18/28
GFS-T12					0/ 0				2/ 0				5/ 4				3/ 6			38/ 8
NAM-T12					0/ 0				0/ 0				4/ 2				8/ 8			11/ 8
GFS-POZ	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POZ	0	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
GFS-POS	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POS	0	0	0	10	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0
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
GFS-CIG	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	7	6	7
NAM-CIG	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	7	6	4	6
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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