KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 8/11/2022 0000 UTC
KCVG NAM MOS GUIDANCE 8/11/2022 0000 UTC

Date/Time UTC	8/11 06:00 Thu	8/11 09:00 Thu	8/11 12:00 Thu	8/11 15:00 Thu	8/11 18:00 Thu	8/11 21:00 Thu	8/12 00:00 Fri	8/12 03:00 Fri	8/12 06:00 Fri	8/12 09:00 Fri	8/12 12:00 Fri	8/12 15:00 Fri	8/12 18:00 Fri	8/12 21:00 Fri	8/13 00:00 Sat	8/13 03:00 Sat	8/13 06:00 Sat	8/13 09:00 Sat	8/13 12:00 Sat	8/13 18:00 Sat	8/14 00:00 Sun
Date/Time Local	8/11 02:00 Thu	8/11 05:00 Thu	8/11 08:00 Thu	8/11 11:00 Thu	8/11 14:00 Thu	8/11 17:00 Thu	8/11 20:00 Thu	8/11 23:00 Thu	8/12 02:00 Fri	8/12 05:00 Fri	8/12 08:00 Fri	8/12 11:00 Fri	8/12 14:00 Fri	8/12 17:00 Fri	8/12 20:00 Fri	8/12 23:00 Fri	8/13 02:00 Sat	8/13 05:00 Sat	8/13 08:00 Sat	8/13 14:00 Sat	8/13 20:00 Sat
GFS-X/N							83				61				78				57		81
NAM-X/N							83				58				80				58		82
GFS-TMP	70	68	67	75	80	81	77	71	67	64	63	70	74	76	72	66	62	59	60	77	75
NAM-TMP	69	67	67	75	80	81	76	69	65	61	61	70	77	78	72	66	63	60	61	79	74
GFS-DPT	66	65	65	64	64	63	62	62	61	58	57	55	53	52	53	54	53	53	54	54	56
NAM-DPT	62	62	63	63	64	61	58	56	55	52	52	50	48	48	50	54	54	54	55	56	56
GFS-CLD	FW	CL	SC	SC	SC	BK	BK	SC	CL	CL	CL	CL	SC	CL	CL	CL	CL	CL	CL	SC	SC
NAM-CLD	CL	CL	FW	BK	BK	BK	SC	FW	CL	CL	CL	CL	CL	CL	CL	CL	CL	CL	SC	SC	SC
GFS-WDR	35	35	35	36	35	35	01	04	03	03	04	04	02	03	03	04	05	05	07	14	18
NAM-WDR	33	34	02	35	34	34	01	03	03	04	04	05	02	01	03	05	07	06	06	18	17
GFS-WSP	04	03	02	05	06	08	10	07	05	05	04	07	08	07	05	04	04	04	03	04	02
NAM-WSP	02	03	03	05	06	09	11	05	05	05	05	07	07	07	05	04	03	03	02	06	04
GFS-P06			5		0		14		2		3		0		0		0		4	1	0
NAM-P06			4		4		19		1		0		0		1		0		0	0	2
GFS-P12							16				6				0				7		1
NAM-P12							27				5				1				0		4
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			1/ 0		3/ 4		14/ 5		3/ 5		0/ 2		0/ 0		0/ 0		0/ 0		0/ 0		2/ 0
NAM-T06			0/ 0		5/ 4		26/12		2/ 2		0/ 0		0/ 2		0/ 1		0/ 0		0/ 1		1/ 7
GFS-T12					5/ 4				17/ 8				0/ 2				0/ 1			0/ 1
NAM-T12					5/ 4				26/13				0/ 2				0/ 1			0/ 2
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	8	8	8	6	6	6	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
GFS-VIS	7	6	5	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	5	7	7
GFS-OBV	N	BR	BR	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	BR	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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