KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 7/27/2024 0000 UTC
KCVG NAM MOS GUIDANCE 7/27/2024 0000 UTC

Date/Time UTC	7/27 06:00 Sat	7/27 09:00 Sat	7/27 12:00 Sat	7/27 15:00 Sat	7/27 18:00 Sat	7/27 21:00 Sat	7/28 00:00 Sun	7/28 03:00 Sun	7/28 06:00 Sun	7/28 09:00 Sun	7/28 12:00 Sun	7/28 15:00 Sun	7/28 18:00 Sun	7/28 21:00 Sun	7/29 00:00 Mon	7/29 03:00 Mon	7/29 06:00 Mon	7/29 09:00 Mon	7/29 12:00 Mon	7/29 18:00 Mon	7/30 00:00 Tue
Date/Time Local	7/27 02:00 Sat	7/27 05:00 Sat	7/27 08:00 Sat	7/27 11:00 Sat	7/27 14:00 Sat	7/27 17:00 Sat	7/27 20:00 Sat	7/27 23:00 Sat	7/28 02:00 Sun	7/28 05:00 Sun	7/28 08:00 Sun	7/28 11:00 Sun	7/28 14:00 Sun	7/28 17:00 Sun	7/28 20:00 Sun	7/28 23:00 Sun	7/29 02:00 Mon	7/29 05:00 Mon	7/29 08:00 Mon	7/29 14:00 Mon	7/29 20:00 Mon
GFS-X/N							90				65				86				69		85
NAM-X/N							87				64				86				70		85
GFS-TMP	67	64	66	81	87	89	83	74	70	68	71	81	84	83	79	74	72	70	71	80	77
NAM-TMP	67	64	66	79	84	86	81	73	69	67	70	79	84	83	79	73	71	71	71	81	79
GFS-DPT	54	54	56	56	53	51	53	55	55	57	61	62	61	64	67	68	69	68	68	69	67
NAM-DPT	55	56	58	60	58	57	58	60	60	61	63	66	67	67	69	70	70	70	69	70	68
GFS-CLD	CL	CL	CL	CL	FW	CL	SC	CL	CL	FW	BK	BK	OV	OV	OV	OV	OV	OV	OV	OV	OV
NAM-CLD	CL	CL	CL	CL	SC	FW	FW	CL	CL	CL	CL	FW	BK	BK	OV	OV	OV	OV	OV	OV	BK
GFS-WDR	07	07	08	09	06	10	08	11	12	15	15	17	19	22	20	19	19	19	18	22	21
NAM-WDR	06	06	06	13	06	07	10	09	11	10	13	16	18	21	23	24	22	22	20	20	22
GFS-WSP	07	06	04	05	05	05	05	04	03	02	03	06	08	09	06	05	05	04	05	08	05
NAM-WSP	05	05	04	03	03	05	04	03	03	02	03	05	06	07	04	04	04	04	04	06	05
GFS-P06			3		0		0		0		0		18		42		40		46	39	51
NAM-P06			3		2		0		1		3		10		53		52		64	41	16
GFS-P12							0				2				45				63		71
NAM-P12							2				3				54				80		49
GFS-Q06			0		0		0		0		0		0		1		1		2	1	3
NAM-Q06			0		0		0		0		0		0		2		2		3	1	0
GFS-Q12							0				0				1				2		3
NAM-Q12							0				0				1				3		1
GFS-T06			0/ 0		0/ 2		1/ 0		0/ 0		3/ 0		9/ 3		25/13		13/ 2		17/ 3		42/20
NAM-T06			0/ 0		1/ 0		2/ 8		0/ 0		0/ 0		6/ 5		43/15		22/ 7		15/ 2		30/14
GFS-T12					0/ 2				1/ 0				9/ 4				35/13			31/ 8
NAM-T12					1/ 0				2/ 8				6/ 5				50/17			24/ 5
GFS-CIG	8	8	8	8	8	8	8	8	8	8	8	7	6	7	7	6	6	5	3	6	7
NAM-CIG	8	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	6	4	3	5	8
GFS-VIS	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	6	5	5	4	7	7
NAM-VIS	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	5	5	5	7	7
GFS-OBV	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	BR	BR	BR	BR	N	N
NAM-OBV	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	BR	BR	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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