KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 5/16/2022 0000 UTC
KCVG NAM MOS GUIDANCE 5/16/2022 0000 UTC

Date/Time UTC	5/16 06:00 Mon	5/16 09:00 Mon	5/16 12:00 Mon	5/16 15:00 Mon	5/16 18:00 Mon	5/16 21:00 Mon	5/17 00:00 Tue	5/17 03:00 Tue	5/17 06:00 Tue	5/17 09:00 Tue	5/17 12:00 Tue	5/17 15:00 Tue	5/17 18:00 Tue	5/17 21:00 Tue	5/18 00:00 Wed	5/18 03:00 Wed	5/18 06:00 Wed	5/18 09:00 Wed	5/18 12:00 Wed	5/18 18:00 Wed	5/19 00:00 Thu
Date/Time Local	5/16 02:00 Mon	5/16 05:00 Mon	5/16 08:00 Mon	5/16 11:00 Mon	5/16 14:00 Mon	5/16 17:00 Mon	5/16 20:00 Mon	5/16 23:00 Mon	5/17 02:00 Tue	5/17 05:00 Tue	5/17 08:00 Tue	5/17 11:00 Tue	5/17 14:00 Tue	5/17 17:00 Tue	5/17 20:00 Tue	5/17 23:00 Tue	5/18 02:00 Wed	5/18 05:00 Wed	5/18 08:00 Wed	5/18 14:00 Wed	5/18 20:00 Wed
GFS-X/N							75				53				79				58		76
NAM-X/N							75				53				77				55		70
GFS-TMP	67	64	62	67	71	73	69	61	58	56	58	70	76	77	73	65	62	60	61	72	72
NAM-TMP	67	63	61	66	71	72	68	63	59	56	57	68	74	75	71	62	60	57	58	66	64
GFS-DPT	56	55	54	53	49	46	45	47	48	48	50	51	51	50	52	53	54	54	55	61	63
NAM-DPT	57	56	55	54	50	47	46	46	46	46	48	49	48	48	49	51	51	51	53	57	59
GFS-CLD	OV	OV	OV	SC	BK	BK	SC	FW	CL	CL	SC	FW	BK	BK	BK	SC	SC	SC	BK	OV	OV
NAM-CLD	OV	OV	OV	OV	SC	BK	SC	FW	FW	CL	CL	FW	SC	SC	BK	BK	OV	OV	OV	OV	OV
GFS-WDR	33	31	31	31	30	30	28	24	26	27	28	28	27	28	24	17	17	16	16	21	25
NAM-WDR	32	34	33	33	29	30	29	25	26	26	29	31	31	31	29	06	10	09	11	18	16
GFS-WSP	08	05	08	09	12	10	06	03	03	02	02	05	07	08	05	03	03	06	11	13	11
NAM-WSP	07	12	08	09	09	12	08	04	04	03	03	06	10	06	06	04	03	05	07	07	05
GFS-P06			51		4		0		0		0		0		5		1		4	54	47
NAM-P06			65		2		0		0		2		0		0		6		33	46	55
GFS-P12							4				2				5				7		68
NAM-P12							2				2				0				44		64
GFS-Q06			1		0		0		0		0		0		0		0		0	2	1
NAM-Q06			2		0		0		0		0		0		0		0		0	1	2
GFS-Q12							0				0				0				0		2
NAM-Q12							0				0				0				1		2
GFS-T06			16/ 3		3/ 4		6/14		1/ 4		1/ 0		2/ 2		5/ 9		2/ 2		5/ 5		32/20
NAM-T06			28/ 4		1/ 2		6/11		1/ 7		0/ 3		1/ 6		5/13		4/ 7		7/ 7		22/14
GFS-T12					16/ 5				6/14				2/ 6				5/10			28/ 9
NAM-T12					28/ 4				6/11				1/ 6				6/13			7/ 7
GFS-POZ	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POZ	0	0	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	1	0	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POS	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	3	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	7	3	4	8	8	8	8	8	8	8	8	8	7	8	8	8	8	8	8	5	6
NAM-CIG	7	4	3	5	8	7	8	8	8	8	8	8	8	8	8	8	7	6	7	3	4
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	4	3
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	BR	BR

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.

5,107 Page Views