KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 4/25/2024 1200 UTC
KCVG NAM MOS GUIDANCE 4/25/2024 1200 UTC

Date/Time UTC	4/25 18:00 Thu	4/25 21:00 Thu	4/26 00:00 Fri	4/26 03:00 Fri	4/26 06:00 Fri	4/26 09:00 Fri	4/26 12:00 Fri	4/26 15:00 Fri	4/26 18:00 Fri	4/26 21:00 Fri	4/27 00:00 Sat	4/27 03:00 Sat	4/27 06:00 Sat	4/27 09:00 Sat	4/27 12:00 Sat	4/27 15:00 Sat	4/27 18:00 Sat	4/27 21:00 Sat	4/28 00:00 Sun	4/28 06:00 Sun	4/28 12:00 Sun
Date/Time Local	4/25 14:00 Thu	4/25 17:00 Thu	4/25 20:00 Thu	4/25 23:00 Thu	4/26 02:00 Fri	4/26 05:00 Fri	4/26 08:00 Fri	4/26 11:00 Fri	4/26 14:00 Fri	4/26 17:00 Fri	4/26 20:00 Fri	4/26 23:00 Fri	4/27 02:00 Sat	4/27 05:00 Sat	4/27 08:00 Sat	4/27 11:00 Sat	4/27 14:00 Sat	4/27 17:00 Sat	4/27 20:00 Sat	4/28 02:00 Sun	4/28 08:00 Sun
GFS-N/X							42				71				57				75		62
NAM-N/X							42				70				57				79		61
GFS-TMP	54	60	57	51	47	44	45	59	67	69	65	62	59	58	60	63	71	74	71	66	65
NAM-TMP	57	60	58	50	48	45	46	61	67	68	66	61	59	59	60	69	75	76	72	66	64
GFS-DPT	31	30	31	32	32	32	34	39	44	48	51	53	54	54	55	57	59	59	57	57	57
NAM-DPT	33	33	34	34	35	36	38	42	46	49	51	53	53	54	54	59	60	60	60	58	57
GFS-CLD	FW	CL	CL	CL	CL	CL	CL	CL	SC	OV	OV	OV	OV	OV	OV	OV	OV	BK	BK	CL	FW
NAM-CLD	SC	CL	CL	CL	CL	CL	FW	SC	BK	OV	OV	OV	OV	OV	OV	OV	OV	OV	BK	BK	FW
GFS-WDR	06	05	04	06	06	07	08	11	14	17	15	15	15	16	17	18	19	19	18	18	19
NAM-WDR	08	02	06	07	09	07	08	11	14	17	13	14	15	17	17	19	20	20	18	18	18
GFS-WSP	06	07	08	07	08	08	10	10	10	09	09	13	13	13	13	14	17	16	12	10	10
NAM-WSP	05	06	08	05	07	06	08	08	09	08	10	12	12	12	13	13	14	13	11	12	10
GFS-P06			0		1		2		1		23		44		49		31		13	8	3
NAM-P06			1		0		2		2		48		23		21		9		10	5	9
GFS-P12							3				23				71				38		8
NAM-P12							2				49				23				13		9
GFS-Q06			0		0		0		0		0		1		1		0		0	0	0
NAM-Q06			0		0		0		0		1		0		0		0		0	0	0
GFS-Q12							0				0				2				0		0
NAM-Q12							0				1				0				0		0
GFS-T06			0/ 0		1/ 0		0/ 0		1/ 4		6/ 0		19/ 2		20/ 3		9/ 1		4/12		5/ 1
NAM-T06			0/ 1		0/ 0		1/ 0		3/ 0		8/ 8		11/10		8/ 8		7/ 5		9/23		2/ 3
GFS-T12					1/ 0				2/ 4				19/ 5				20/ 6			7/12
NAM-T12					0/ 1				5/ 0				14/10				11/11			11/23
GFS-POZ	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POZ	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
GFS-POS	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POS	0	0	0	1	0	11	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1
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						0
NAM-SNW							0								0						0
GFS-CIG	8	8	8	8	8	8	8	8	8	7	5	6	7	6	6	5	6	7	8	8	8
NAM-CIG	8	8	8	8	8	8	8	8	8	6	6	7	7	6	6	7	7	7	8	8	8
GFS-VIS	7	7	7	7	7	7	7	7	7	7	5	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	HZ	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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