KD4PYR MOS Compare

GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 6/04/2020 1200 UTC
KCVG NAM MOS GUIDANCE 6/04/2020 1200 UTC

Date/Time UTC	6/4 18:00 Thu	6/4 21:00 Thu	6/5 00:00 Fri	6/5 03:00 Fri	6/5 06:00 Fri	6/5 09:00 Fri	6/5 12:00 Fri	6/5 15:00 Fri	6/5 18:00 Fri	6/5 21:00 Fri	6/6 00:00 Sat	6/6 03:00 Sat	6/6 06:00 Sat	6/6 09:00 Sat	6/6 12:00 Sat	6/6 15:00 Sat	6/6 18:00 Sat	6/6 21:00 Sat	6/7 00:00 Sun	6/7 06:00 Sun	6/7 12:00 Sun
Date/Time Local	6/4 14:00 Thu	6/4 17:00 Thu	6/4 20:00 Thu	6/4 23:00 Thu	6/5 02:00 Fri	6/5 05:00 Fri	6/5 08:00 Fri	6/5 11:00 Fri	6/5 14:00 Fri	6/5 17:00 Fri	6/5 20:00 Fri	6/5 23:00 Fri	6/6 02:00 Sat	6/6 05:00 Sat	6/6 08:00 Sat	6/6 11:00 Sat	6/6 14:00 Sat	6/6 17:00 Sat	6/6 20:00 Sat	6/7 02:00 Sun	6/7 08:00 Sun
GFS-N/X							65				85				68				84		61
NAM-N/X							68				84				67				83		60
GFS-TMP	80	79	75	71	69	67	69	77	81	82	78	74	71	70	71	77	81	82	77	66	64
NAM-TMP	83	81	77	73	71	70	70	76	81	82	79	74	71	69	69	75	80	81	75	65	63
GFS-DPT	67	66	67	65	65	64	66	67	67	67	67	67	67	67	68	67	63	59	57	55	55
NAM-DPT	68	67	68	68	68	68	68	69	68	68	68	68	67	66	66	64	62	60	59	55	55
GFS-CLD	BK	OV	OV	OV	OV	OV	BK	BK	BK	BK	BK	BK	SC	BK	SC	SC	SC	FW	CL	CL	CL
NAM-CLD	BK	OV	OV	OV	OV	OV	OV	OV	BK	BK	FW	SC	SC	BK	BK	SC	FW	FW	CL	CL	FW
GFS-WDR	21	21	20	21	21	20	22	24	24	24	24	24	25	27	31	32	33	33	35	01	05
NAM-WDR	21	21	22	22	18	15	12	15	26	29	27	26	25	28	33	36	34	33	35	01	06
GFS-WSP	10	07	05	04	02	02	02	03	05	06	04	03	04	04	05	08	10	10	10	07	08
NAM-WSP	09	08	06	04	04	02	03	04	03	07	04	04	03	03	06	08	08	11	08	05	07
GFS-P06			71		41		25		4		14		21		4		6		2	0	0
NAM-P06			66		45		35		8		1		0		6		3		4	0	0
GFS-P12							50				20				32				6		2
NAM-P12							52				12				6				6		2
GFS-Q06			3		1		0		0		0		0		0		0		0	0	0
NAM-Q06			2		1		0		0		0		0		0		0		0	0	0
GFS-Q12							1				0				0				0		0
NAM-Q12							1				0				0				0		0
GFS-T06			62/20		22/ 1		14/ 0		3/ 1		28/23		32/13		4/ 2		2/ 4		0/10		0/ 1
NAM-T06			53/25		23/ 5		18/ 1		7/ 3		11/15		16/12		9/ 7		4/ 6		3/10		2/ 3
GFS-T12					68/20				14/ 3				43/23				4/ 7			0/16
NAM-T12					66/25				18/ 3				16/17				12/ 8			3/11
GFS-CIG	8	8	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
NAM-CIG	8	7	7	7	4	2	2	3	6	8	8	8	8	8	8	8	8	8	8	8	8
GFS-VIS	7	7	7	7	7	7	5	7	7	7	7	7	7	7	7	7	7	7	7	7	7
NAM-VIS	7	7	7	6	5	4	4	6	7	7	7	7	7	7	7	7	7	7	7	7	7
GFS-OBV	N	N	N	N	N	N	BR	N	N	N	N	N	N	N	N	N	N	N	N	N	N
NAM-OBV	N	N	N	N	BR	BR	BR	HZ	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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