KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 9/25/2021 0000 UTC
KCVG NAM MOS GUIDANCE 9/25/2021 0000 UTC

Date/Time UTC	9/25 06:00 Sat	9/25 09:00 Sat	9/25 12:00 Sat	9/25 15:00 Sat	9/25 18:00 Sat	9/25 21:00 Sat	9/26 00:00 Sun	9/26 03:00 Sun	9/26 06:00 Sun	9/26 09:00 Sun	9/26 12:00 Sun	9/26 15:00 Sun	9/26 18:00 Sun	9/26 21:00 Sun	9/27 00:00 Mon	9/27 03:00 Mon	9/27 06:00 Mon	9/27 09:00 Mon	9/27 12:00 Mon	9/27 18:00 Mon	9/28 00:00 Tue
Date/Time Local	9/25 02:00 Sat	9/25 05:00 Sat	9/25 08:00 Sat	9/25 11:00 Sat	9/25 14:00 Sat	9/25 17:00 Sat	9/25 20:00 Sat	9/25 23:00 Sat	9/26 02:00 Sun	9/26 05:00 Sun	9/26 08:00 Sun	9/26 11:00 Sun	9/26 14:00 Sun	9/26 17:00 Sun	9/26 20:00 Sun	9/26 23:00 Sun	9/27 02:00 Mon	9/27 05:00 Mon	9/27 08:00 Mon	9/27 14:00 Mon	9/27 20:00 Mon
GFS-X/N							67				45				74				56		80
NAM-X/N							69				46				73				55		79
GFS-TMP	56	54	53	59	63	65	59	54	51	48	48	63	71	73	67	62	60	58	58	76	73
NAM-TMP	57	55	53	60	65	67	62	55	52	50	49	63	70	72	67	62	60	58	57	75	73
GFS-DPT	48	49	50	52	49	47	47	46	45	44	45	46	46	46	47	48	49	49	50	57	58
NAM-DPT	50	50	50	53	51	48	46	43	43	42	43	44	43	44	46	49	49	49	50	53	56
GFS-CLD	BK	OV	OV	OV	OV	SC	CL	CL	CL	CL	CL	FW	SC	FW	SC	CL	SC	FW	SC	SC	SC
NAM-CLD	BK	SC	OV	OV	OV	SC	FW	CL	CL	CL	CL	CL	FW	FW	SC	CL	CL	CL	SC	SC	SC
GFS-WDR	19	20	21	25	26	29	29	24	22	22	20	23	22	23	19	19	18	19	17	21	21
NAM-WDR	18	19	22	28	28	30	30	27	23	24	21	24	23	23	22	20	20	20	19	22	21
GFS-WSP	06	06	05	05	08	08	04	02	01	02	03	06	07	07	02	07	07	05	08	11	09
NAM-WSP	04	06	07	07	08	10	06	03	02	02	03	08	09	08	05	05	07	06	05	11	06
GFS-P06			24		31		7		0		2		0		0		0		0	7	0
NAM-P06			9		42		3		0		1		1		1		1		9	11	5
GFS-P12							31				4				0				0		7
NAM-P12							42				1				3				9		11
GFS-Q06			0		0		0		0		0		0		0		0		0	0	0
NAM-Q06			0		1		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			1/ 0		7/ 0		13/ 1		0/ 0		0/ 0		1/ 0		1/ 0		1/ 0		3/ 0		10/ 3
NAM-T06			1/ 0		1/ 4		0/ 2		0/ 0		0/ 0		0/ 0		1/ 0		1/ 0		2/ 0		3/ 4
GFS-T12					7/ 1				13/ 1				1/ 0				2/ 0			4/ 2
NAM-T12					1/ 4				0/ 2				3/ 0				2/ 0			2/ 2
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	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	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
NAM-POS	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	2	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	7	4	5	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
NAM-CIG	8	8	8	4	5	8	8	8	8	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	6	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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