GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 10/20/2017 0000 UTC
KCVG NAM MOS GUIDANCE 10/20/2017 0000 UTC


Date/Time
UTC
10/20
06:00
Fri
10/20
09:00
Fri
10/20
12:00
Fri
10/20
15:00
Fri
10/20
18:00
Fri
10/20
21:00
Fri
10/21
00:00
Sat
10/21
03:00
Sat
10/21
06:00
Sat
10/21
09:00
Sat
10/21
12:00
Sat
10/21
15:00
Sat
10/21
18:00
Sat
10/21
21:00
Sat
10/22
00:00
Sun
10/22
03:00
Sun
10/22
06:00
Sun
10/22
09:00
Sun
10/22
12:00
Sun
10/22
18:00
Sun
10/23
00:00
Mon
Date/Time
Local
10/20
02:00
Fri
10/20
05:00
Fri
10/20
08:00
Fri
10/20
11:00
Fri
10/20
14:00
Fri
10/20
17:00
Fri
10/20
20:00
Fri
10/20
23:00
Fri
10/21
02:00
Sat
10/21
05:00
Sat
10/21
08:00
Sat
10/21
11:00
Sat
10/21
14:00
Sat
10/21
17:00
Sat
10/21
20:00
Sat
10/21
23:00
Sat
10/22
02:00
Sun
10/22
05:00
Sun
10/22
08:00
Sun
10/22
14:00
Sun
10/22
20:00
Sun
GFS-X/N 76 53 77 54 77
NAM-X/N 74 53 75 55 77
GFS-TMP575554657375686258565565747668635958587469
NAM-TMP575452637173676159575560717465626059597468
GFS-DPT525151535352525250504952504849484747495353
NAM-DPT515048525353545152525152525149474748505352
GFS-CLDCLBKFWFWFWCLCLCLCLCLCLFWCLCLSCCLFWCLCLBKOV
NAM-CLDCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLCLBKBK
GFS-WDR232222191616151515141518191716151516161816
NAM-WDR212017171515141415141418191715151618171815
GFS-WSP020201030405030303030307080705050606071306
NAM-WSP020201020304030303030305060605050505060906
GFS-P06 1 0 1 2 4 6 4 1 6 8 5
NAM-P06 2 2 2 1 3 4 5 8 41313
GFS-P12 1 4 7 6 8
NAM-P12 3 6 5 8 13
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/ 2 0/ 0 0/ 3 0/ 3 0/ 4 0/ 0 0/ 5 0/ 3 0/ 3
NAM-T06 0/ 2 0/ 1 0/ 0 0/ 3 0/ 3 0/ 5 0/ 5 0/16 0/ 1 0/ 5
GFS-T12 0/ 3 0/ 3 0/ 4 0/ 5 0/ 3
NAM-T12 0/ 2 0/ 3 0/ 5 0/16 0/ 5
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 1 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 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POS 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 5 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
NAM-VIS 7 7 5 7 7 7 7 7 7 7 6 7 7 7 7 7 7 7 7 7 7
GFS-OBV N NBR N N N N N N N N N N N N N N N N N N
NAM-OBV NBRBR N N N N N N NBR 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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