GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 5/25/2018 0600 UTC
KCVG NAM MOS GUIDANCE 5/25/2018 1200 UTC


Date/Time
UTC
5/25
12:00
Fri
5/25
15:00
Fri
5/25
18:00
Fri
5/25
21:00
Fri
5/26
00:00
Sat
5/26
03:00
Sat
5/26
06:00
Sat
5/26
09:00
Sat
5/26
12:00
Sat
5/26
15:00
Sat
5/26
18:00
Sat
5/26
21:00
Sat
5/27
00:00
Sun
5/27
03:00
Sun
5/27
06:00
Sun
5/27
09:00
Sun
5/27
12:00
Sun
5/27
15:00
Sun
5/27
18:00
Sun
5/27
21:00
Sun
5/28
00:00
Mon
5/28
06:00
Mon
5/28
12:00
Mon
Date/Time
Local
5/25
08:00
Fri
5/25
11:00
Fri
5/25
14:00
Fri
5/25
17:00
Fri
5/25
20:00
Fri
5/25
23:00
Fri
5/26
02:00
Sat
5/26
05:00
Sat
5/26
08:00
Sat
5/26
11:00
Sat
5/26
14:00
Sat
5/26
17:00
Sat
5/26
20:00
Sat
5/26
23:00
Sat
5/27
02:00
Sun
5/27
05:00
Sun
5/27
08:00
Sun
5/27
11:00
Sun
5/27
14:00
Sun
5/27
17:00
Sun
5/27
20:00
Sun
5/28
02:00
Mon
5/28
08:00
Mon
GFS-X/N 86 65 85 66 --90 --
NAM-N/X---- 68 82 67 88 67
GFS-TMP64778484797269676978828277727068718187--8371--
NAM-TMP----838479737069717679787572706970818585817271
GFS-DPT58595757596162626467686768676665676563--6364--
NAM-DPT----565658626364666969696968676768717069686767
GFS-CLDCLCLFWFWBKOVOVOVOVOVBKBKBKFWBKSCFWSCBK--SCCL--
NAM-CLD----CLCLSCSCBKOVBKOVOVOVOVBKBKBKBKBKBKBKSCFWSC
GFS-WDR00212120191919192022232526242425303001--0916--
NAM-WDR----232120181819192121232424232324262424201826
GFS-WSP00030506040304030607080705030202020304--0501--
NAM-WSP----050604030303050809080504040203040505030101
GFS-P06 0 3 17 31 59 65 22 5 3-- 3 2--
NAM-P06---- 1 6 48 43 55 17 7 4 4 2 3
GFS-P12 3 36 83 36 -- 7 --
NAM-P12---- 48 74 20 5 8
GFS-Q06 0 0 0 0 2 3 0 0 0-- 0 0--
NAM-Q06---- 0 0 1 1 1 0 0 0 0 0 0
GFS-Q12 0 0 3 0 -- 0 --
NAM-Q12---- 1 2 0 0 0
GFS-T06 0/ 0 6/ 1 14/ 3 13/ 1 32/ 3 63/19 28/ 9 3/ 0 4/ 2-- 4/ 5--
NAM-T06---- 0/ 0 3/ 1 23/ 3 23/ 6 50/19 22/10 11/ 2 9/ 5 18/20 10/ 3
GFS-T12 14/ 8 42/ 3 70/20 4/ 5-- 17/13--
NAM-T12---- 7/ 1 45/ 6 58/21 15/ 5 21/22
GFS-POZ 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0-- 1 1--
NAM-POZ---- 0 1 2 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 1 1
GFS-POS 0 0 0 0 0 1 0 0 0 0 0 2 1 0 0 0 0 0 0-- 0 0--
NAM-POS---- 0 0 0 0 1 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 0
GFS-CIG 8 8 8 8 8 8 7 7 8 8 7 8 8 8 8 8 8 8 8-- 8 8--
NAM-CIG---- 8 8 8 8 8 7 8 5 6 6 7 8 8 8 1 8 7 1 8 8 8
GFS-VIS 7 7 7 7 7 7 7 7 5 7 7 7 7 7 7 5 3 7 7-- 7 6--
NAM-VIS---- 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 7 7 7 7 7 4
GFS-OBV N N N N N N N NBR N N N N N NBRBR N N-- NBR--
NAM-OBV---- N N N N N N N N N N N N N NBR N N N N NBR

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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