KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 6/29/2017 0000 UTC
KCVG NAM MOS GUIDANCE 6/29/2017 0000 UTC

Date/Time UTC	6/29 06:00 Thu	6/29 09:00 Thu	6/29 12:00 Thu	6/29 15:00 Thu	6/29 18:00 Thu	6/29 21:00 Thu	6/30 00:00 Fri	6/30 03:00 Fri	6/30 06:00 Fri	6/30 09:00 Fri	6/30 12:00 Fri	6/30 15:00 Fri	6/30 18:00 Fri	6/30 21:00 Fri	7/1 00:00 Sat	7/1 03:00 Sat	7/1 06:00 Sat	7/1 09:00 Sat	7/1 12:00 Sat	7/1 18:00 Sat	7/2 00:00 Sun
Date/Time Local	6/29 02:00 Thu	6/29 05:00 Thu	6/29 08:00 Thu	6/29 11:00 Thu	6/29 14:00 Thu	6/29 17:00 Thu	6/29 20:00 Thu	6/29 23:00 Thu	6/30 02:00 Fri	6/30 05:00 Fri	6/30 08:00 Fri	6/30 11:00 Fri	6/30 14:00 Fri	6/30 17:00 Fri	6/30 20:00 Fri	6/30 23:00 Fri	7/1 02:00 Sat	7/1 05:00 Sat	7/1 08:00 Sat	7/1 14:00 Sat	7/1 20:00 Sat
GFS-X/N							88				71				84				70		84
NAM-X/N							87				70				84				70		83
GFS-TMP	68	67	71	79	85	87	84	77	74	73	73	77	80	81	78	74	73	72	73	80	78
NAM-TMP	66	65	70	78	83	85	81	76	74	72	72	75	80	81	79	75	73	72	73	80	76
GFS-DPT	59	60	62	64	65	65	65	66	66	66	67	69	69	69	70	69	69	69	69	68	67
NAM-DPT	54	56	60	65	67	67	68	67	67	66	66	68	70	70	71	70	69	68	69	69	68
GFS-CLD	CL	OV	BK	BK	BK	BK	BK	SC	OV	OV	OV	OV	OV	BK	OV	OV	OV	OV	OV	BK	BK
NAM-CLD	BK	FW	SC	BK	BK	BK	SC	BK	BK	BK	OV	OV	OV	BK	BK	OV	OV	OV	OV	OV	BK
GFS-WDR	18	19	19	22	22	20	20	19	20	19	18	20	20	19	20	20	20	21	24	25	26
NAM-WDR	18	19	19	22	22	21	19	20	20	20	20	21	21	20	18	19	21	21	23	24	27
GFS-WSP	07	08	09	14	13	10	07	10	10	08	09	10	11	10	06	06	07	07	06	07	06
NAM-WSP	06	07	10	12	13	11	07	08	10	09	10	10	10	08	06	07	07	08	08	12	07
GFS-P06			2		0		1		0		25		28		36		22		42	49	33
NAM-P06			4		4		2		3		5		9		16		52		39	30	40
GFS-P12							7				25				53				54		57
NAM-P12							4				19				19				64		56
GFS-Q06			0		0		0		0		0		0		0		0		1	2	0
NAM-Q06			0		0		0		0		0		0		0		3		1	0	2
GFS-Q12							0				0				1				2		2
NAM-Q12							0				0				0				5		2
GFS-T06			0/ 0		6/ 6		19/25		15/18		13/ 3		25/ 7		49/28		29/18		35/ 6		40/22
NAM-T06			0/ 4		4/ 7		14/22		16/18		14/ 4		14/ 9		30/26		48/27		41/ 7		42/28
GFS-T12					6/ 8				25/25				34/ 8				63/30			58/ 9
NAM-T12					4/ 7				23/25				21/ 9				67/36			48/10
GFS-CIG	8	8	8	6	8	8	8	8	8	8	5	6	6	6	8	8	7	4	3	6	8
NAM-CIG	8	8	8	8	7	8	8	8	8	8	4	3	5	6	8	7	2	2	3	6	8
GFS-VIS	7	7	7	7	7	7	7	7	7	7	5	7	7	7	7	7	6	6	5	7	7
NAM-VIS	7	7	7	7	7	7	7	7	7	7	7	5	6	7	7	7	7	5	5	6	7
GFS-OBV	N	N	N	N	N	N	N	N	N	N	BR	N	N	N	N	N	BR	BR	BR	N	N
NAM-OBV	N	N	N	N	N	N	N	N	N	N	N	BR	HZ	N	N	N	N	BR	BR	HZ	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.

1,786 Page Views