GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 9/26/2023 1800 UTC
KCVG NAM MOS GUIDANCE 9/26/2023 1200 UTC


Date/Time
UTC
9/26
18:00
Tue
9/26
21:00
Tue
9/27
00:00
Wed
9/27
03:00
Wed
9/27
06:00
Wed
9/27
09:00
Wed
9/27
12:00
Wed
9/27
15:00
Wed
9/27
18:00
Wed
9/27
21:00
Wed
9/28
00:00
Thu
9/28
03:00
Thu
9/28
06:00
Thu
9/28
09:00
Thu
9/28
12:00
Thu
9/28
15:00
Thu
9/28
18:00
Thu
9/28
21:00
Thu
9/29
00:00
Fri
9/29
03:00
Fri
9/29
06:00
Fri
9/29
12:00
Fri
9/29
18:00
Fri
Date/Time
Local
9/26
14:00
Tue
9/26
17:00
Tue
9/26
20:00
Tue
9/26
23:00
Tue
9/27
02:00
Wed
9/27
05:00
Wed
9/27
08:00
Wed
9/27
11:00
Wed
9/27
14:00
Wed
9/27
17:00
Wed
9/27
20:00
Wed
9/27
23:00
Wed
9/28
02:00
Thu
9/28
05:00
Thu
9/28
08:00
Thu
9/28
11:00
Thu
9/28
14:00
Thu
9/28
17:00
Thu
9/28
20:00
Thu
9/28
23:00
Thu
9/29
02:00
Fri
9/29
08:00
Fri
9/29
14:00
Fri
GFS-N/X---- 61 79 62 78 60
NAM-N/X 59 73 59 72-- 58--
GFS-TMP----746966636270757670676664636974757067646282
NAM-TMP76777165636260657070666463616064687066--6159--
GFS-DPT----595958585860606061605959596364646362616060
NAM-DPT58595958585857596161626060595860626261--6159--
GFS-CLD----OVOVBKBKOVOVOVBKBKOVOVOVOVOVOVOVSCCLCLFWSC
NAM-CLDBKOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOV--BKBK--
GFS-WDR----090809101217242113151617192223242316171420
NAM-WDR11101010100910131112121314151616151311--1110--
GFS-WSP----080607050506060504040505060808070403030204
NAM-WSP06060806050607050506060607070807070606--0403--
GFS-P06---- 55 45 28 27 54 64 44 33 14 3 0
NAM-P06 1 25 15 59 61 51 57 43 32--2213--
GFS-P12---- 78 41 83 57 19
NAM-P12 30 84 81 53-- 29--
GFS-Q06---- 1 1 0 0 1 2 1 0 0 0 0
NAM-Q06 0 0 0 1 1 1 1 1 0-- 0 0--
GFS-Q12---- 2 0 3 1 0
NAM-Q12 0 2 2 1-- 0--
GFS-T06---- 32/ 3 17/ 0 11/ 1 11/ 3 30/ 3 34/ 1 16/ 2 25/ 0 8/ 0 1/ 2
NAM-T06 1/ 2 13/ 4 6/ 0 13/ 3 28/ 6 23/ 3 24/ 0 13/ 4 20/ 5-- 4/ 0--
GFS-T12---- 25/ 3 43/ 5 36/ 3 30/ 3 2/ 3
NAM-T12 13/ 4 22/ 3 36/ 6 29/ 4 --35/ 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-- 0 3--
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---- 7 8 8 8 7 7 7 7 8 7 7 6 3 4 5 6 8 8 8 8 8
NAM-CIG 7 7 8 8 7 7 7 6 5 5 6 7 6 4 4 3 4 4 5-- 6 3--
GFS-VIS---- 7 7 7 7 7 7 7 7 7 7 7 7 6 7 7 7 7 7 7 1 7
NAM-VIS 7 7 7 7 7 5 4 7 7 6 6 6 7 7 7 3 5 5 5-- 5 1--
GFS-OBV---- N N N N N N N N N N N NBR N N N N N NFG N
NAM-OBV N N N N NBRBR N N N N N N N NBRBRHZHZ--BRFG--

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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