KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 1/28/2022 1200 UTC
KCVG NAM MOS GUIDANCE 1/28/2022 1200 UTC

Date/Time UTC	1/28 18:00 Fri	1/28 21:00 Fri	1/29 00:00 Sat	1/29 03:00 Sat	1/29 06:00 Sat	1/29 09:00 Sat	1/29 12:00 Sat	1/29 15:00 Sat	1/29 18:00 Sat	1/29 21:00 Sat	1/30 00:00 Sun	1/30 03:00 Sun	1/30 06:00 Sun	1/30 09:00 Sun	1/30 12:00 Sun	1/30 15:00 Sun	1/30 18:00 Sun	1/30 21:00 Sun	1/31 00:00 Mon	1/31 06:00 Mon	1/31 12:00 Mon
Date/Time Local	1/28 13:00 Fri	1/28 16:00 Fri	1/28 19:00 Fri	1/28 22:00 Fri	1/29 01:00 Sat	1/29 04:00 Sat	1/29 07:00 Sat	1/29 10:00 Sat	1/29 13:00 Sat	1/29 16:00 Sat	1/29 19:00 Sat	1/29 22:00 Sat	1/30 01:00 Sun	1/30 04:00 Sun	1/30 07:00 Sun	1/30 10:00 Sun	1/30 13:00 Sun	1/30 16:00 Sun	1/30 19:00 Sun	1/31 01:00 Mon	1/31 07:00 Mon
GFS-N/X							10				25				19				36		22
NAM-N/X							11				29				17				38		22
GFS-TMP	29	27	23	19	15	13	12	16	21	24	21	20	21	21	22	28	34	35	31	26	24
NAM-TMP	30	28	23	19	17	14	12	18	25	28	24	21	20	20	20	29	35	36	32	26	23
GFS-DPT	22	18	15	10	6	4	3	6	7	7	8	9	11	12	14	17	19	20	21	20	20
NAM-DPT	21	17	13	10	8	7	5	6	5	4	5	8	8	10	11	15	16	16	17	18	18
GFS-CLD	OV	OV	OV	OV	BK	FW	SC	CL	CL	FW	SC	SC	BK	OV	BK	SC	BK	BK	FW	OV	OV
NAM-CLD	OV	OV	BK	BK	SC	BK	SC	FW	CL	CL	SC	SC	OV	OV	BK	BK	BK	CL	CL	SC	SC
GFS-WDR	36	36	36	35	35	34	33	33	27	25	19	18	17	17	17	21	26	29	30	31	23
NAM-WDR	01	01	36	36	36	35	33	32	28	26	22	18	19	17	16	18	27	30	30	24	20
GFS-WSP	10	12	17	13	11	08	05	04	05	06	04	04	06	08	08	07	10	08	06	03	02
NAM-WSP	09	12	13	13	11	08	06	06	05	06	03	04	05	06	06	05	07	06	03	03	03
GFS-P06			48		7		1		0		0		0		1		2		0	0	0
NAM-P06			11		1		0		0		0		0		1		2		0	1	3
GFS-P12							7				0				5				2		0
NAM-P12							1				0				1				2		3
GFS-Q06			1		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			2/ 0		0/ 1		0/ 2		0/ 7		0/ 0		0/ 3		0/ 0		0/ 0		0/ 2		0/ 8
NAM-T06			1/ 1		0/ 4		0/ 4		0/ 4		0/ 1		0/ 2		1/ 3		0/ 2		0/ 7		0/ 7
GFS-T12					2/ 9				0/ 7				0/14				1/ 5			1/13
NAM-T12					1/ 9				0/ 4				0/ 2				1/ 3			0/ 9
GFS-POZ	3	1	0	3	2	1	1	1	3	2	3	0	2	1	1	1	3	1	3	1	1
NAM-POZ	0	3	4	2	3	3	1	1	3	3	2	1	1	1	1	2	2	3	3	3	3
GFS-POS	97	99	00	97	98	99	99	99	97	98	98	99	98	99	99	99	90	88	89	97	97
NAM-POS	00	97	96	98	97	97	99	99	97	98	97	98	98	98	99	98	98	96	97	94	97
GFS-TYP	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
NAM-TYP	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
GFS-SNW							1								0						0
NAM-SNW							0								0						0
GFS-CIG	5	5	6	6	8	8	8	8	8	8	8	8	8	8	8	8	6	6	8	8	7
NAM-CIG	5	6	8	6	6	8	8	8	8	8	8	8	7	7	8	7	7	8	8	8	8
GFS-VIS	4	5	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
NAM-VIS	5	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
GFS-OBV	BR	BR	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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