GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 5/20/2018 0600 UTC
KCVG NAM MOS GUIDANCE 5/20/2018 0000 UTC


Date/Time
UTC
5/20
06:00
Sun
5/20
09:00
Sun
5/20
12:00
Sun
5/20
15:00
Sun
5/20
18:00
Sun
5/20
21:00
Sun
5/21
00:00
Mon
5/21
03:00
Mon
5/21
06:00
Mon
5/21
09:00
Mon
5/21
12:00
Mon
5/21
15:00
Mon
5/21
18:00
Mon
5/21
21:00
Mon
5/22
00:00
Tue
5/22
03:00
Tue
5/22
06:00
Tue
5/22
09:00
Tue
5/22
12:00
Tue
5/22
15:00
Tue
5/22
18:00
Tue
5/23
00:00
Wed
5/23
06:00
Wed
Date/Time
Local
5/20
02:00
Sun
5/20
05:00
Sun
5/20
08:00
Sun
5/20
11:00
Sun
5/20
14:00
Sun
5/20
17:00
Sun
5/20
20:00
Sun
5/20
23:00
Sun
5/21
02:00
Mon
5/21
05:00
Mon
5/21
08:00
Mon
5/21
11:00
Mon
5/21
14:00
Mon
5/21
17:00
Mon
5/21
20:00
Mon
5/21
23:00
Mon
5/22
02:00
Tue
5/22
05:00
Tue
5/22
08:00
Tue
5/22
11:00
Tue
5/22
14:00
Tue
5/22
20:00
Tue
5/23
02:00
Wed
GFS-X/N---- 84 64 82 64 82
NAM-X/N 85 64 81 65-- 81--
GFS-TMP----687680807571696668747878747067666774787467
NAM-TMP68666676818276716967667177787571696768--7774--
GFS-DPT----656665656564636263646464636160606265666462
NAM-DPT66656567686767666564636264646464636364--6664--
GFS-CLD----BKOVBKOVOVOVOVOVOVOVBKOVOVOVOVBKBKBKBKBKBK
NAM-CLDBKOVBKBKBKBKBKOVOVOVOVOVOVOVOVOVOVOVOV--BKBK--
GFS-WDR----252927231914140608121617192020202124252933
NAM-WDR22212325252935010908061311141618202222--2627--
GFS-WSP----040404040402020306050607050505040507080604
NAM-WSP04030303040505050505040405050504040405--0706--
GFS-P06---- 10 31 35 48 58 57 40 25 3133 7
NAM-P06 3 2 7 26 27 8 21 56 44--2010--
GFS-P12---- 38 67 77 52 57
NAM-P12 7 40 22 69-- 34--
GFS-Q06---- 0 0 0 1 2 2 1 0 0 0 0
NAM-Q06 0 0 0 0 0 0 0 2 1-- 0 0--
GFS-Q12---- 0 2 3 1 2
NAM-Q12 0 0 0 2-- 0--
GFS-T06---- 11/ 1 40/24 31/13 25/ 0 37/ 4 45/17 22/ 5 13/ 1 26/ 2 7/ 8
NAM-T06 4/ 2 7/ 4 15/21 19/16 7/ 1 4/ 1 18/20 32/15 18/ 3-- 16/20--
GFS-T12---- 58/24 48/ 4 51/17 31/ 3 46/15
NAM-T12 9/ 4 23/21 9/ 1 42/20 --28/ 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-- 0 0--
GFS-POS---- 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
NAM-POS 0 1 0 0 0 1 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---- 7 7 8 7 8 8 8 7 7 7 8 8 7 8 8 8 8 8 7 8 8
NAM-CIG 8 8 8 8 7 8 8 7 7 7 7 6 6 1 1 7 6 6 5-- 6 8--
GFS-VIS---- 5 7 7 7 7 6 5 4 3 7 6 7 7 7 7 7 5 7 7 7 6
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----BR N N N NHZBRBRBR N N N N N N NBR N N NBR
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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