Every instrument close enough to be worth naming, how far away it is, how high it stands, and what kind of measurement it makes.
What the snow tracker reads here
Every instrument in this state
-in
Snow on the ground
Station charts
Ames Report
Rank 748 of 1,060 in Iowa, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.
Ranking Statistics
247 score91.4of 100
Iowa median
94.7the median score of 1,060 stations
Scoring higher
747stations in Iowa
Sharing its score
2ranks 748 to 749
Points deducted
8.66.6 arrival, 1.6 forecast check, 0.4 reports received
Counted at the median
Forecast checknot measured at this station; Iowa median 83.8
AUDI4rank 749; behind on reports received 98.8% against 85.7%
Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.
Reports receivedweight 3598.834.6 of 35 pointsIowa median 99.0166 of 168 scheduled reports received in 7 days
Arrivalweight 1034.23.4 of 10 pointsIowa median 82.9half its reports arrived within 43 min
Continuityweight 10100.010.0 of 10 pointsIowa median 100.0longest silence 2 h, on a schedule of one report every 60 min
Accuracyweight 20100.020.0 of 20 pointsIowa median 100.0its temperature against the airport station KAMW, 5.3 miles away, over 159 readings: typical difference 1.9 °F beyond a steady offset of +0.6 °F
Instrument checksweight 15100.015.0 of 15 pointsIowa median 100.00 of 159 readings failed their check against its reference station
Forecast checkweight 10-8.4 of 10 points, at the medianIowa median 83.8-
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (3 h), none for 72 (72 h)
Accuracy
Full marks within 2.0 °F of its reference, typically, none beyond 8.5 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
+0.7 °Fwarmer than the airport station KAMW, 5.3 miles away, on average over 397 readings; typical difference 2.0 °F; also compared with 1 other reference station
The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 166 of 168 scheduled reports received, 98.8%.
Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.
Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.
The ranking these charts were drawn from, as tables
Share of scheduled reports received
Stations
100%
287
90 to 99%
425
80 to 89%
80
70 to 79%
118
60 to 69%
10
50 to 59%
72
40 to 49%
47
30 to 39%
2
20 to 29%
12
10 to 19%
2
0 to 9%
5
Day
Rank
Stations ranked
Share received
Oct 16, 2026
748
1,060
98.8%
Oct 15, 2026
748
1,038
98.8%
Oct 14, 2026
731
1,036
98.8%
Oct 13, 2026
719
1,035
98.8%
Oct 12, 2026
703
1,040
98.8%
Oct 11, 2026
704
1,048
98.2%
Oct 10, 2026
837
1,051
93.4%
Oct 9, 2026
835
1,051
93.4%
Oct 8, 2026
872
1,054
94.0%
Oct 7, 2026
863
1,096
94.0%
Oct 6, 2026
876
1,100
94.0%
Oct 5, 2026
888
1,089
93.7%
Oct 4, 2026
853
1,027
93.3%
Oct 3, 2026
852
1,017
99.1%
Oct 2, 2026
851
1,017
99.1%
Oct 1, 2026
254
771
98.8%
Sep 30, 2026
275
764
98.4%
Sep 29, 2026
198
758
100.0%
Sep 28, 2026
197
745
100.0%
The readings these charts were drawn from, as a table
Hour
Temperature F
Dew point F
Relative humidity %
Wind mph
Wind direction °
Reports
Thu 15, 11 PM
47.5
41.6
80
-
-
1
Thu 15, 10 PM
49.8
43.5
79
12
314
1
Thu 15, 9 PM
51.6
48.2
88
15
315
1
Thu 15, 8 PM
51.8
49.2
91
12
311
1
Thu 15, 7 PM
50.5
48.3
92
11
312
1
Thu 15, 6 PM
50.2
48.0
92
11
324
1
Thu 15, 5 PM
49.8
48.7
96
12
328
1
Thu 15, 4 PM
51.3
49.9
95
12
336
1
Thu 15, 3 PM
53.4
52.0
95
14
332
1
Thu 15, 2 PM
55.2
54.4
97
13
326
1
Thu 15, 1 PM
56.1
55.8
99
9
327
1
Thu 15, 12 PM
58.1
58.1
100
5
342
1
Thu 15, 11 AM
57.0
57.0
100
3
20
1
Thu 15, 10 AM
55.9
55.9
100
5
13
1
Thu 15, 9 AM
56.3
56.3
100
6
358
1
Thu 15, 8 AM
55.9
55.9
100
4
7
1
Thu 15, 7 AM
55.6
55.3
99
3
35
1
Thu 15, 6 AM
55.2
54.9
99
3
56
1
Thu 15, 5 AM
55.0
54.2
97
3
47
1
Thu 15, 4 AM
55.8
52.6
89
3
51
1
Thu 15, 3 AM
55.0
51.5
88
3
35
1
Thu 15, 2 AM
54.7
50.9
87
3
34
1
Thu 15, 1 AM
54.7
50.6
86
3
18
1
The readings these charts were drawn from, as a table
Hour
Temperature F
Dew point F
Relative humidity %
Wind mph
Wind direction °
Reports
Thu 15, 11 PM
47.5
41.6
80
-
-
1
Thu 15, 10 PM
49.8
43.5
79
12
314
1
Thu 15, 9 PM
51.6
48.2
88
15
315
1
Thu 15, 8 PM
51.8
49.2
91
12
311
1
Thu 15, 7 PM
50.5
48.3
92
11
312
1
Thu 15, 6 PM
50.2
48.0
92
11
324
1
Thu 15, 5 PM
49.8
48.7
96
12
328
1
Thu 15, 4 PM
51.3
49.9
95
12
336
1
Thu 15, 3 PM
53.4
52.0
95
14
332
1
Thu 15, 2 PM
55.2
54.4
97
13
326
1
Thu 15, 1 PM
56.1
55.8
99
9
327
1
Thu 15, 12 PM
58.1
58.1
100
5
342
1
Thu 15, 11 AM
57.0
57.0
100
3
20
1
Thu 15, 10 AM
55.9
55.9
100
5
13
1
Thu 15, 9 AM
56.3
56.3
100
6
358
1
Thu 15, 8 AM
55.9
55.9
100
4
7
1
Thu 15, 7 AM
55.6
55.3
99
3
35
1
Thu 15, 6 AM
55.2
54.9
99
3
56
1
Thu 15, 5 AM
55.0
54.2
97
3
47
1
Thu 15, 4 AM
55.8
52.6
89
3
51
1
Thu 15, 3 AM
55.0
51.5
88
3
35
1
Thu 15, 2 AM
54.7
50.9
87
3
34
1
Thu 15, 1 AM
54.7
50.6
86
3
18
1
Thu 15, 12 AM
54.0
49.3
84
2
24
1
Wed 14, 11 PM
53.8
49.1
84
3
35
1
Wed 14, 10 PM
53.6
48.9
84
2
23
1
Wed 14, 9 PM
52.3
48.2
86
3
37
1
Wed 14, 8 PM
52.9
48.5
85
3
40
1
Wed 14, 7 PM
54.0
48.0
80
2
37
1
Wed 14, 6 PM
57.6
47.9
70
3
47
1
Wed 14, 5 PM
58.6
48.5
69
5
54
1
Wed 14, 4 PM
57.6
48.3
71
5
27
1
Wed 14, 3 PM
57.4
47.7
70
5
25
1
Wed 14, 2 PM
56.8
47.9
72
6
30
1
Wed 14, 1 PM
56.7
47.8
72
6
18
1
Wed 14, 12 PM
55.4
47.2
74
8
16
1
Wed 14, 11 AM
53.8
47.1
78
8
20
1
Wed 14, 10 AM
52.2
46.9
82
9
28
1
Wed 14, 9 AM
50.2
45.9
85
8
21
1
Wed 14, 8 AM
47.7
45.2
91
7
6
1
Wed 14, 7 AM
48.2
45.4
90
6
4
1
Wed 14, 6 AM
49.3
45.9
88
6
2
1
Wed 14, 5 AM
50.5
46.2
85
7
358
1
Wed 14, 4 AM
52.0
45.7
79
6
352
1
Wed 14, 3 AM
53.6
45.9
75
5
8
1
Wed 14, 2 AM
55.9
46.6
71
7
14
1
Wed 14, 1 AM
56.8
47.9
72
7
10
1
Wed 14, 12 AM
59.2
50.5
73
8
1
1
Tue 13, 11 PM
59.9
52.3
76
5
7
1
Tue 13, 10 PM
59.7
54.2
82
4
339
1
Tue 13, 9 PM
61.3
53.7
76
3
336
1
Tue 13, 8 PM
62.6
54.2
74
4
326
1
Tue 13, 7 PM
62.8
53.6
72
3
310
1
Tue 13, 6 PM
64.4
53.6
68
3
320
1
Tue 13, 5 PM
64.4
53.6
68
4
334
1
Tue 13, 4 PM
65.8
55.3
69
4
289
1
Tue 13, 3 PM
67.1
53.6
62
3
286
1
Tue 13, 2 PM
67.1
54.1
63
3
350
1
Tue 13, 1 PM
64.0
53.2
68
3
348
1
Tue 13, 12 PM
62.4
52.9
71
5
328
1
Tue 13, 11 AM
60.1
52.5
76
5
338
1
Tue 13, 10 AM
57.7
52.6
83
5
3
1
Tue 13, 9 AM
56.3
52.5
87
5
359
1
Tue 13, 8 AM
56.1
52.6
88
5
6
1
Tue 13, 7 AM
55.6
52.4
89
5
340
1
Tue 13, 6 AM
55.6
52.1
88
4
351
1
Tue 13, 5 AM
55.8
52.3
88
5
329
1
Tue 13, 4 AM
56.3
52.8
88
7
340
1
Tue 13, 3 AM
56.7
53.5
89
6
329
1
Tue 13, 2 AM
56.5
53.3
89
6
316
1
Tue 13, 1 AM
56.3
53.7
91
6
294
1
Tue 13, 12 AM
57.4
53.9
88
5
296
1
Mon 12, 11 PM
59.0
53.8
83
7
302
1
Mon 12, 10 PM
62.6
55.6
78
10
306
1
Mon 12, 9 PM
67.3
57.6
71
9
303
1
Mon 12, 8 PM
76.1
63.0
64
8
300
1
Mon 12, 7 PM
79.9
65.2
61
6
207
1
Mon 12, 6 PM
84.0
65.5
54
6
207
1
Mon 12, 5 PM
86.0
64.6
49
9
206
1
Mon 12, 4 PM
87.8
65.0
47
13
207
1
Mon 12, 3 PM
87.1
64.4
47
13
198
1
Mon 12, 2 PM
87.3
64.6
47
11
201
1
Mon 12, 1 PM
84.9
63.6
49
11
202
1
Mon 12, 12 PM
81.9
63.6
54
12
207
1
Mon 12, 11 AM
80.2
63.0
56
11
207
1
Mon 12, 10 AM
76.3
63.2
64
11
208
1
Mon 12, 9 AM
72.1
62.6
72
9
200
1
Mon 12, 8 AM
68.5
62.1
80
6
192
1
Mon 12, 7 AM
68.5
62.1
80
6
194
1
Mon 12, 6 AM
69.3
61.8
77
6
193
1
Mon 12, 5 AM
68.7
60.4
75
6
193
1
Mon 12, 4 AM
69.3
59.9
72
5
198
1
Mon 12, 3 AM
69.8
59.2
69
6
196
1
Mon 12, 2 AM
70.3
58.0
65
6
192
1
Mon 12, 1 AM
71.6
57.9
62
6
190
1
Mon 12, 12 AM
72.0
58.3
62
7
186
1
Sun 11, 11 PM
72.1
58.3
62
6
176
1
Sun 11, 10 PM
72.5
58.3
61
5
172
1
Sun 11, 9 PM
73.0
58.3
60
5
169
1
Sun 11, 8 PM
75.9
58.0
54
6
174
1
Sun 11, 7 PM
77.4
58.4
52
6
175
1
Sun 11, 6 PM
82.4
58.3
44
6
176
1
Sun 11, 5 PM
87.3
56.3
35
9
188
1
Sun 11, 4 PM
88.9
56.0
33
11
194
1
Sun 11, 3 PM
87.6
57.3
36
11
189
1
Sun 11, 2 PM
86.7
56.5
36
10
186
1
Sun 11, 1 PM
83.8
56.9
40
9
179
1
Sun 11, 12 PM
82.0
56.6
42
9
181
1
Sun 11, 11 AM
77.5
56.2
48
8
186
1
Sun 11, 10 AM
72.3
57.2
59
8
190
1
Sun 11, 9 AM
65.8
56.1
71
7
178
1
Sun 11, 8 AM
59.9
55.0
84
5
159
1
Sun 11, 7 AM
58.3
54.1
86
4
166
1
Sun 11, 6 AM
60.4
54.5
81
3
155
1
Sun 11, 5 AM
61.9
55.0
78
4
153
1
Sun 11, 4 AM
63.9
55.1
73
5
148
1
Sun 11, 3 AM
64.6
55.4
72
4
151
1
Sun 11, 2 AM
66.0
55.9
70
5
152
1
Sun 11, 1 AM
67.8
56.8
68
6
161
1
Sun 11, 12 AM
67.8
57.2
69
6
159
1
Sat 10, 11 PM
69.6
57.7
66
5
165
1
Sat 10, 10 PM
70.9
58.5
65
6
168
1
Sat 10, 9 PM
72.7
58.9
62
7
163
1
Sat 10, 8 PM
75.2
58.9
57
6
164
1
Sat 10, 7 PM
77.0
58.0
52
8
160
1
Sat 10, 6 PM
81.9
55.9
41
8
161
1
Sat 10, 5 PM
84.9
54.9
36
11
175
1
Sat 10, 4 PM
86.7
54.1
33
12
174
1
Sat 10, 3 PM
86.7
54.9
34
11
180
1
Sat 10, 2 PM
86.2
55.3
35
11
189
1
Sat 10, 1 PM
85.3
56.0
37
12
199
1
Sat 10, 12 PM
82.0
56.0
41
10
192
1
Sat 10, 11 AM
79.2
56.0
45
11
200
1
Sat 10, 10 AM
74.5
56.2
53
11
205
1
Sat 10, 9 AM
68.5
57.1
67
9
196
1
Sat 10, 8 AM
62.2
57.0
83
6
179
1
Sat 10, 7 AM
62.1
56.2
81
5
168
1
Sat 10, 6 AM
64.0
57.0
78
5
189
1
Sat 10, 5 AM
63.1
57.5
82
5
200
1
Sat 10, 4 AM
64.4
57.7
79
5
203
1
Sat 10, 3 AM
66.2
57.7
74
6
196
1
Sat 10, 2 AM
66.0
56.7
72
6
191
1
Sat 10, 1 AM
66.4
56.7
71
5
184
1
Sat 10, 12 AM
68.2
56.4
66
5
173
1
Fri 9, 11 PM
67.5
56.6
68
6
175
1
Fri 9, 10 PM
70.0
56.8
63
5
175
1
Fri 9, 9 PM
70.7
58.8
66
6
175
1
Fri 9, 8 PM
72.0
59.1
64
5
174
1
Fri 9, 7 PM
75.9
59.1
56
4
171
1
Fri 9, 6 PM
82.0
59.2
46
5
167
1
Fri 9, 5 PM
84.6
59.6
43
7
169
1
Fri 9, 4 PM
84.0
59.1
43
8
176
1
Fri 9, 3 PM
82.8
57.3
42
7
179
1
Fri 9, 2 PM
80.2
57.5
46
8
189
1
Fri 9, 1 PM
78.3
56.4
47
9
178
1
Fri 9, 12 PM
76.1
56.1
50
11
168
1
Fri 9, 11 AM
73.0
55.9
55
13
156
1
Fri 9, 10 AM
68.9
58.3
69
11
154
1
Fri 9, 9 AM
63.7
58.4
83
7
146
1
Fri 9, 8 AM
60.3
57.6
91
6
144
1
Fri 9, 7 AM
60.6
57.9
91
6
151
1
Fri 9, 6 AM
61.5
58.5
90
7
135
1
Fri 9, 5 AM
61.5
58.5
90
6
107
1
Fri 9, 4 AM
60.8
59.3
95
7
58
1
Fri 9, 3 AM
60.8
60.2
98
6
124
1
Fri 9, 2 AM
59.2
58.6
98
6
98
1
Fri 9, 1 AM
60.3
57.6
91
5
43
1
The readings these charts were drawn from, as a table
Day
High F
Low F
Highest dew point F
Lowest dew point F
Highest humidity %
Lowest humidity %
Strongest gust mph
Oct 15
58.1
47.5
58.1
41.6
100
79
25
Oct 14
59.2
47.7
50.5
45.2
91
69
16
Oct 13
67.1
55.6
55.3
52.1
91
62
15
Oct 12
87.8
59.0
65.5
53.8
83
47
23
Oct 11
88.9
58.3
58.4
54.1
86
33
21
Oct 10
86.7
62.1
58.9
54.1
83
33
21
Oct 9
84.6
59.2
60.2
55.9
98
42
24
Oct 8
77.2
47.1
56.1
41.9
94
30
14
Oct 7
80.1
53.8
56.8
38.6
98
24
16
Oct 6
83.8
50.9
57.6
46.6
88
37
21
Oct 5
75.7
41.7
49.8
41.0
99
31
14
Oct 4
73.0
48.7
50.0
40.5
94
31
15
Oct 3
73.6
44.6
50.8
42.1
98
36
20
Oct 2
67.5
44.4
45.9
33.2
88
28
14
Oct 1
68.5
50.9
68.5
46.7
100
64
22
Sep 30
71.8
66.0
69.9
65.7
100
93
12
Sep 29
72.7
55.2
66.2
52.9
98
53
15
Sep 28
76.8
61.2
62.1
55.9
100
50
11
Sep 27
65.3
59.0
63.4
57.4
100
92
9
Sep 26
64.2
60.3
61.3
57.3
98
88
17
Sep 25
62.8
58.3
61.2
57.9
100
93
14
Sep 24
67.6
54.3
58.8
53.7
98
65
12
Sep 23
69.6
46.8
54.6
46.8
100
53
16
Sep 22
57.9
53.2
56.5
52.6
99
91
15
Sep 21
61.3
56.3
58.4
54.4
99
78
17
Sep 20
66.4
60.8
62.7
54.4
99
78
21
Sep 19
84.2
63.9
72.4
63.0
100
66
17
Sep 18
72.3
63.9
72.0
63.0
99
89
22
Sep 17
78.3
66.2
69.3
66.1
100
68
17
Station report
Ames, in 4 sheets
Drawn from its report of Oct 15, 2026, 11:00 PM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.
47.5 F with a dew point of 41.6 F, 80 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up.
At 1,073 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.78 inHg and the temperature at 55.2 F; it reports 47.5 F, 7.7 F colder than standard.
On Oct 16 the noon sun stands 39 degrees above the horizon at 42.00 N, and the day is 10 h 54 min long. Level ground there takes 63 per cent of the noon sunlight a surface facing the sun would.
FB-WAT-002, Fig. CHumidity variables
FB-ENG-011, Fig. AWater vapour as a gas
FB-ENG-005, Fig. ALapse rates and stability
