GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 11/26/2020 1200 UTC
KCVG NAM MOS GUIDANCE 11/26/2020 1200 UTC


Date/Time
UTC
11/26
18:00
Thu
11/26
21:00
Thu
11/27
00:00
Fri
11/27
03:00
Fri
11/27
06:00
Fri
11/27
09:00
Fri
11/27
12:00
Fri
11/27
15:00
Fri
11/27
18:00
Fri
11/27
21:00
Fri
11/28
00:00
Sat
11/28
03:00
Sat
11/28
06:00
Sat
11/28
09:00
Sat
11/28
12:00
Sat
11/28
15:00
Sat
11/28
18:00
Sat
11/28
21:00
Sat
11/29
00:00
Sun
11/29
06:00
Sun
11/29
12:00
Sun
Date/Time
Local
11/26
13:00
Thu
11/26
16:00
Thu
11/26
19:00
Thu
11/26
22:00
Thu
11/27
01:00
Fri
11/27
04:00
Fri
11/27
07:00
Fri
11/27
10:00
Fri
11/27
13:00
Fri
11/27
16:00
Fri
11/27
19:00
Fri
11/27
22:00
Fri
11/28
01:00
Sat
11/28
04:00
Sat
11/28
07:00
Sat
11/28
10:00
Sat
11/28
13:00
Sat
11/28
16:00
Sat
11/28
19:00
Sat
11/29
01:00
Sun
11/29
07:00
Sun
GFS-N/X 40 57 36 50 32
NAM-N/X 41 53 33 48 32
GFS-TMP515148474543424954555046434037414749423734
NAM-TMP505147464544434649504643403735384547423733
GFS-DPT454545433938384141404040393634343129282626
NAM-DPT454342414242424141403937353330313230292928
GFS-CLDOVOVOVOVOVOVOVOVBKOVOVOVOVFWCLCLCLCLCLCLCL
NAM-CLDOVOVOVOVOVOVOVOVBKOVOVOVOVOVBKFWSCFWCLCLSC
GFS-WDR252524232123222121243031313233333027202015
NAM-WDR262525232125252423273234333434343525101112
GFS-WSP080603010202020506050505060605050403010102
NAM-WSP060503020202030505050504070806060403030203
GFS-P06 2 1 0 0 0 12 3 0 0 3 5
NAM-P06 0 0 11 5 4 4 1 0 1 3 7
GFS-P12 1 1 12 1 5
NAM-P12 11 5 4 1 7
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/ 1 0/ 0 0/ 6 0/ 0 1/ 0 0/ 1 0/ 6 0/ 1 0/ 0 0/ 0
NAM-T06 0/ 0 0/ 0 0/ 4 0/ 1 0/ 7 0/ 4 0/ 0 0/ 0 0/ 0 0/ 0
GFS-T12 1/ 4 0/ 6 1/10 0/ 6 0/ 8
NAM-T12 0/ 0 0/ 4 0/ 7 0/ 0 0/ 1
GFS-POZ 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 3 6 813 7
NAM-POZ 0 1 2 1 0 0 0 0 0 0 0 0 0 0 1 3 1 6101812
GFS-POS 0 0 0 0 1 1 0 0 0 0 3 2 6111910 3 2 01517
NAM-POS 0 0 0 0 1 8 1 2 1 1 3 4 3161417 2 6142633
GFS-TYP R R R R R R R R R R R R R R R R R R R R R
NAM-TYP R R R R R R R R R R R R R R R R R R R R R
GFS-SNW 0 0 0
NAM-SNW 0 0 0
GFS-CIG 4 5 5 5 5 5 5 7 8 7 6 6 6 8 8 8 8 8 8 8 8
NAM-CIG 5 5 5 5 5 4 4 5 7 6 6 6 5 5 8 8 8 8 8 8 8
GFS-VIS 7 7 7 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 5 7 7 7 7 7 7 7 7 7 7 7 7 7 7
GFS-OBV N N 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 NBRBR 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

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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