GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 8/12/2020 0600 UTC
KCVG NAM MOS GUIDANCE 8/12/2020 0000 UTC


Date/Time
UTC
8/12
06:00
Wed
8/12
09:00
Wed
8/12
12:00
Wed
8/12
15:00
Wed
8/12
18:00
Wed
8/12
21:00
Wed
8/13
00:00
Thu
8/13
03:00
Thu
8/13
06:00
Thu
8/13
09:00
Thu
8/13
12:00
Thu
8/13
15:00
Thu
8/13
18:00
Thu
8/13
21:00
Thu
8/14
00:00
Fri
8/14
03:00
Fri
8/14
06:00
Fri
8/14
09:00
Fri
8/14
12:00
Fri
8/14
15:00
Fri
8/14
18:00
Fri
8/15
00:00
Sat
8/15
06:00
Sat
Date/Time
Local
8/12
02:00
Wed
8/12
05:00
Wed
8/12
08:00
Wed
8/12
11:00
Wed
8/12
14:00
Wed
8/12
17:00
Wed
8/12
20:00
Wed
8/12
23:00
Wed
8/13
02:00
Thu
8/13
05:00
Thu
8/13
08:00
Thu
8/13
11:00
Thu
8/13
14:00
Thu
8/13
17:00
Thu
8/13
20:00
Thu
8/13
23:00
Thu
8/14
02:00
Fri
8/14
05:00
Fri
8/14
08:00
Fri
8/14
11:00
Fri
8/14
14:00
Fri
8/14
20:00
Fri
8/15
02:00
Sat
GFS-X/N---- 85 69 83 70 80
NAM-X/N 85 65 87 68-- 81--
GFS-TMP----717781827874727070758081777473727173767469
NAM-TMP72707078828379737068697883848174727071--7874--
GFS-DPT----697071717068676767676869696969696969696968
NAM-DPT70696969676666656564646464636466666667--6969--
GFS-CLD----BKOVBKBKBKBKBKOVBKBKBKBKBKOVBKOVOVOVOVOVOV
NAM-CLDSCBKBKBKBKBKSCSCBKBKBKBKBKBKBKBKOVOVBK--OVOV--
GFS-WDR----040705360405040403040505070607070708070909
NAM-WDR35363506023535030303030505050503050507--1009--
GFS-WSP----040403060706050404060607060604030405050507
NAM-WSP01010203040404040303040507070605050504--0506--
GFS-P06---- 3 13 21 9 12 23 30 46 565449
NAM-P06 3 2 1 2 3 7 1 2 24--3743--
GFS-P12---- 15 25 27 53 76
NAM-P12 4 4 7 24-- 56--
GFS-Q06---- 0 0 0 0 0 0 0 2 3 3 2
NAM-Q06 0 0 0 0 0 0 0 0 0-- 1 1--
GFS-Q12---- 0 0 0 1 4
NAM-Q12 0 0 0 0-- 1--
GFS-T06---- 8/ 5 28/13 23/ 1 2/ 0 4/ 2 24/ 3 18/ 0 18/ 2 21/ 5 21/ 1
NAM-T06 1/ 0 1/ 3 8/ 6 8/ 1 4/ 3 7/ 5 16/12 10/ 5 13/ 2-- 33/11--
GFS-T12---- 39/13 4/ 3 28/ 5 30/ 6 36/ 8
NAM-T12 5/ 3 10/ 6 7/ 5 21/12 --29/ 6 --
GFS-CIG---- 8 6 6 8 8 8 8 8 8 8 8 8 8 8 8 7 7 4 6 6 6
NAM-CIG 8 7 7 6 6 8 8 8 8 8 8 8 8 8 8 8 8 7 8-- 6 7--
GFS-VIS---- 6 7 7 7 7 7 7 6 5 7 7 7 7 7 7 6 3 6 7 7 5
NAM-VIS 5 3 2 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5-- 7 7--
GFS-OBV----BR N N N N N NHZBR N N N N N NBRBR N N NBR
NAM-OBVBRBRFG N N N N N N N N N N N N N N NBR-- 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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