GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 10/18/2017 0000 UTC
KCVG NAM MOS GUIDANCE 10/18/2017 0000 UTC


Date/Time
UTC
10/18
06:00
Wed
10/18
09:00
Wed
10/18
12:00
Wed
10/18
15:00
Wed
10/18
18:00
Wed
10/18
21:00
Wed
10/19
00:00
Thu
10/19
03:00
Thu
10/19
06:00
Thu
10/19
09:00
Thu
10/19
12:00
Thu
10/19
15:00
Thu
10/19
18:00
Thu
10/19
21:00
Thu
10/20
00:00
Fri
10/20
03:00
Fri
10/20
06:00
Fri
10/20
09:00
Fri
10/20
12:00
Fri
10/20
18:00
Fri
10/21
00:00
Sat
Date/Time
Local
10/18
02:00
Wed
10/18
05:00
Wed
10/18
08:00
Wed
10/18
11:00
Wed
10/18
14:00
Wed
10/18
17:00
Wed
10/18
20:00
Wed
10/18
23:00
Wed
10/19
02:00
Thu
10/19
05:00
Thu
10/19
08:00
Thu
10/19
11:00
Thu
10/19
14:00
Thu
10/19
17:00
Thu
10/19
20:00
Thu
10/19
23:00
Thu
10/20
02:00
Fri
10/20
05:00
Fri
10/20
08:00
Fri
10/20
14:00
Fri
10/20
20:00
Fri
GFS-X/N 69 48 70 52 75
NAM-X/N 69 50 70 50 71
GFS-TMP494745576669625652515160676963605654537266
NAM-TMP484644576668625856545459666862585553516764
GFS-DPT434140434242444342434448494950515151515251
NAM-DPT424140444544454444454548495050484848475252
GFS-CLDCLCLFWFWCLCLCLCLCLCLCLCLFWFWCLCLCLCLFWFWCL
NAM-CLDCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLFWCLCL
GFS-WDR181715161919181919202021232322222323201714
NAM-WDR161513171818171819192021222120202020191614
GFS-WSP030202060708050405050509090804020201010403
NAM-WSP020202040606040304040508080803040302030403
GFS-P06 1 0 0 0 0 0 0 2 2 4 6
NAM-P06 2 2 2 1 3 4 5 2 4 8 9
GFS-P12 0 0 0 2 6
NAM-P12 3 6 5 5 9
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 0/ 3 0/ 4 0/ 5 0/ 6 0/ 1 0/ 2 0/ 0 0/ 5 0/ 0 0/ 0
NAM-T06 0/ 1 0/ 3 0/ 2 0/ 3 0/ 0 0/ 2 0/ 0 0/ 4 1/ 1 0/ 1
GFS-T12 0/ 4 0/ 6 0/ 2 1/ 5 1/ 3
NAM-T12 0/ 3 0/ 7 0/ 2 0/ 4 1/ 4
GFS-POZ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POZ 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GFS-POS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POS 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
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
NAM-SNW 0 0
GFS-CIG 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
NAM-CIG 8 8 8 8 8 8 8 8 8 8 8 8 8 8 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 1 7 7
NAM-VIS 7 7 5 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 5 7 7
GFS-OBV N N N N N N N N N N N N N N N N N NFG N N
NAM-OBV N NBR N N N N N N N N N N N N N NBRBR 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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