WxSim & NWS Forecast Comparison
National Weather Service (NW), Actual Observed (Act), WxSim Generated (WS)
AM Forecast Comparison
| Updated: 09-04-10 at 7:55 am |
| Goal |
Forecast Day |
Day +1 |
Day +2 |
Day +3 |
| ± 2.0° F |
High |
Low |
High |
Low |
High |
Low |
High |
Low |
| Date |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
| 09-04-10 |
66 |
|
64 |
44 |
|
44 |
73 |
|
73 |
57 |
|
55 |
76 |
|
76 |
57 |
|
54 |
68 |
|
65 |
53 |
|
43 |
| 09-03-10 |
63 |
59.8 |
58 |
44 |
41.6 |
45 |
68 |
|
64 |
47 |
|
48 |
76 |
|
73 |
57 |
|
53 |
80 |
|
75 |
60 |
|
60 |
| 09-01-10 |
80 |
70.9 |
77 |
62 |
53 |
63 |
73 |
59.8 |
68 |
48 |
41.6 |
56 |
69 |
|
67 |
42 |
|
49 |
72 |
|
65 |
52 |
|
47 |
| 08-31-10 |
83 |
87.4 |
79 |
60 |
56.9 |
66 |
79 |
70.9 |
75 |
62 |
53 |
64 |
75 |
59.8 |
75 |
55 |
41.6 |
55 |
72 |
|
64 |
52 |
|
51 |
| 08-30-10 |
88 |
87.4 |
89 |
71 |
68 |
72 |
87 |
87.4 |
79 |
61 |
56.9 |
66 |
79 |
70.9 |
80 |
60 |
53 |
63 |
75 |
59.8 |
75 |
56 |
41.6 |
54 |
| 08-29-10 |
88 |
89.9 |
89 |
72 |
75.2 |
71 |
90 |
87.4 |
91 |
72 |
68 |
70 |
83 |
87.4 |
83 |
62 |
56.9 |
67 |
81 |
70.9 |
79 |
61 |
53 |
66 |
| 08-28-10 |
87 |
85.8 |
85 |
64 |
66 |
63 |
89 |
89.9 |
91 |
69 |
75.2 |
69 |
90 |
87.4 |
90 |
68 |
68 |
68 |
83 |
87.4 |
87 |
61 |
56.9 |
61 |
| 08-27-10 |
85 |
84.0 |
86 |
63 |
62.6 |
62 |
87 |
85.8 |
88 |
63 |
66 |
62 |
88 |
89.9 |
87 |
68 |
75.2 |
68 |
88 |
87.4 |
88 |
67 |
68 |
69 |
| 08-26-10 |
79 |
76.1 |
76 |
60 |
63.2 |
58 |
85 |
84.0 |
86 |
62 |
62.6 |
61 |
86 |
85.8 |
85 |
65 |
66 |
62 |
88 |
89.9 |
87 |
67 |
75.2 |
66 |
| 08-25-10 |
73 |
71.9 |
71 |
48 |
49.7 |
49 |
78 |
76.1 |
78 |
57 |
63.2 |
55 |
85 |
84.0 |
83 |
63 |
62.6 |
61 |
87 |
85.8 |
89 |
65 |
66 |
61 |
| 08-24-10 |
77 |
75.9 |
73 |
52 |
51 |
53 |
73 |
71.9 |
72 |
47 |
49.7 |
49 |
79 |
76.1 |
78 |
58 |
63.2 |
54 |
83 |
84.0 |
82 |
63 |
62.6 |
56 |
| 08-23-10 |
89 |
84.7 |
89 |
64 |
65.5 |
67 |
77 |
75.9 |
74 |
54 |
51 |
55 |
72 |
71.9 |
72 |
50 |
49.7 |
48 |
77 |
76.1 |
78 |
56 |
63.2 |
55 |
| 08-22-10 |
90 |
85.6 |
85 |
67 |
69.8 |
64 |
87 |
84.7 |
87 |
63 |
65.5 |
67 |
77 |
75.9 |
76 |
52 |
51 |
56 |
75 |
71.9 |
70 |
52 |
49.7 |
50 |
| 08-21-10 |
87 |
82.9 |
84 |
64 |
61.3 |
64 |
89 |
85.6 |
87 |
65 |
69.8 |
65 |
86 |
84.7 |
86 |
63 |
65.5 |
66 |
80 |
75.9 |
74 |
55 |
51 |
52 |
| Results |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
| # Succ |
6 |
|
9 |
5 |
|
4 |
7 |
|
6 |
1 |
|
4 |
6 |
|
6 |
5 |
|
4 |
5 |
|
6 |
3 |
|
3 |
| % Succ |
46.2 |
|
69.2 |
38.5 |
|
30.8 |
58.3 |
|
50.0 |
8.3 |
|
33.3 |
54.5 |
|
54.5 |
45.5 |
|
36.4 |
50.0 |
|
60.0 |
30.0 |
|
30.0 |
| Ave Error |
3.0 |
|
2.4 |
2.8 |
|
4.0 |
3.1 |
|
3.1 |
4.4 |
|
5.6 |
3.5 |
|
3.6 |
3.9 |
|
5.7 |
4.3 |
|
3.8 |
5.1 |
|
6.1 |
|
2.1 |
|
-0.1 |
0.6 |
|
1.0 |
2.9 |
|
1.4 |
0.0 |
|
1.4 |
2.4 |
|
1.9 |
1.0 |
|
1.4 |
2.8 |
|
2.0 |
1.6 |
|
0.3 |
| Std Dev |
2.4 |
|
2.4 |
2.1 |
|
3.0 |
3.8 |
|
2.8 |
2.8 |
|
4.5 |
4.4 |
|
4.5 |
4.2 |
|
4.9 |
5.0 |
|
4.8 |
4.9 |
|
5.3 |
|
|
|
PM Forecast Comparison
| Updated: 09-04-10 at 5:55 pm |
| Goal |
Forecast Day |
Day +1 |
Day +2 |
Day +3 |
| ± 2.0° F |
Low |
High |
Low |
High |
Low |
High |
Low |
High |
| Date |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
| 09-04-10 |
44 |
|
48 |
73 |
|
70 |
56 |
|
54 |
76 |
|
73 |
54 |
|
54 |
66 |
|
62 |
47 |
|
42 |
72 |
|
69 |
| 09-03-10 |
44 |
41.6 |
46 |
68 |
68.8 |
64 |
46 |
|
46 |
74 |
|
72 |
57 |
|
54 |
78 |
|
74 |
57 |
|
56 |
71 |
|
62 |
| 09-02-10 |
50 |
53 |
53 |
65 |
59.8 |
61 |
44 |
41.6 |
48 |
68 |
68.8 |
64 |
48 |
|
45 |
77 |
|
72 |
58 |
|
51 |
80 |
|
72 |
| 09-01-10 |
61 |
59 |
61 |
72 |
70.9 |
67 |
51 |
53 |
56 |
67 |
59.8 |
64 |
45 |
41.6 |
48 |
70 |
68.8 |
63 |
52 |
|
44 |
74 |
|
68 |
| 08-31-10 |
59 |
56.9 |
66 |
80 |
73.5 |
75 |
63 |
59 |
66 |
74 |
70.9 |
72 |
53 |
53 |
54 |
68 |
59.8 |
62 |
48 |
41.6 |
49 |
72 |
68.8 |
65 |
| 08-30-10 |
71 |
68 |
73 |
86 |
87.4 |
81 |
60 |
56.9 |
68 |
79 |
73.5 |
78 |
62 |
59 |
66 |
75 |
70.9 |
76 |
55 |
53 |
59 |
72 |
59.8 |
63 |
| 08-29-10 |
71 |
75.2 |
74 |
89 |
87.4 |
92 |
70 |
68 |
72 |
85 |
87.4 |
88 |
62 |
56.9 |
66 |
81 |
73.5 |
80 |
61 |
59 |
66 |
76 |
70.9 |
71 |
| 08-28-10 |
64 |
66 |
65 |
89 |
89.9 |
87 |
67 |
75.2 |
69 |
90 |
87.4 |
87 |
68 |
68 |
67 |
83 |
87.4 |
85 |
61 |
56.9 |
66 |
79 |
73.5 |
82 |
| 08-27-10 |
63 |
62.6 |
63 |
85 |
85.8 |
88 |
63 |
66 |
65 |
88 |
89.9 |
87 |
68 |
75.2 |
67 |
87 |
87.4 |
89 |
67 |
68 |
69 |
82 |
87.4 |
90 |
| 08-26-10 |
60 |
63.2 |
60 |
84 |
84.0 |
85 |
64 |
62.6 |
62 |
86 |
85.8 |
85 |
65 |
66 |
61 |
88 |
89.9 |
87 |
67 |
75.2 |
67 |
87 |
87.4 |
85 |
| 08-25-10 |
46 |
49.7 |
50 |
77 |
76.1 |
77 |
57 |
63.2 |
57 |
82 |
84.0 |
84 |
62 |
62.6 |
61 |
87 |
85.8 |
86 |
64 |
66 |
61 |
86 |
89.9 |
86 |
| 08-24-10 |
50 |
51 |
54 |
72 |
71.9 |
72 |
45 |
49.7 |
49 |
77 |
76.1 |
78 |
58 |
63.2 |
55 |
84 |
84.0 |
83 |
63 |
62.6 |
59 |
87 |
85.8 |
84 |
| 08-23-10 |
64 |
65.5 |
67 |
76 |
75.9 |
77 |
53 |
51 |
56 |
72 |
71.9 |
73 |
48 |
49.7 |
50 |
78 |
76.1 |
77 |
59 |
63.2 |
52 |
83 |
84.0 |
82 |
| 08-22-10 |
68 |
69.8 |
70 |
88 |
84.7 |
88 |
64 |
65.5 |
68 |
77 |
75.9 |
79 |
54 |
51 |
57 |
72 |
71.9 |
68 |
50 |
49.7 |
47 |
77 |
76.1 |
74 |
| Results |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
NW |
Act |
WS |
| # Succ |
6 |
|
8 |
10 |
|
6 |
5 |
|
3 |
7 |
|
7 |
5 |
|
4 |
7 |
|
4 |
6 |
|
1 |
4 |
|
3 |
| % Succ |
46.2 |
|
61.5 |
76.9 |
|
46.2 |
41.7 |
|
25.0 |
58.3 |
|
58.3 |
45.5 |
|
36.4 |
63.6 |
|
36.4 |
60.0 |
|
10.0 |
40.0 |
|
30.0 |
| Ave Error |
2.3 |
|
2.4 |
1.7 |
|
2.6 |
3.4 |
|
4.5 |
2.3 |
|
2.1 |
2.7 |
|
4.9 |
2.8 |
|
3.0 |
3.1 |
|
6.1 |
3.9 |
|
3.0 |
|
-0.8 |
|
1.6 |
1.1 |
|
-0.2 |
-0.9 |
|
2.0 |
1.1 |
|
0.6 |
-0.1 |
|
0.5 |
1.6 |
|
0.0 |
-0.0 |
|
-0.0 |
1.7 |
|
-0.2 |
| Std Dev |
1.2 |
|
2.5 |
2.0 |
|
1.9 |
2.3 |
|
3.5 |
2.1 |
|
1.8 |
2.5 |
|
3.7 |
2.9 |
|
2.4 |
2.9 |
|
4.4 |
3.9 |
|
2.8 |
|
|
|
Advertise your local event here for Free!
