Storm Timing Chart
by KD1LD
| distance across |
10 miles |
20 miles |
30 miles |
40 miles |
50 miles |
60 miles |
70 miles |
80 miles |
90 miles |
100 miles |
110 miles |
120 miles |
130 miles |
140 miles |
150 miles |
|
25 mph |
0:24 |
0:48 |
1:12 |
1:36 |
2:00 |
2:24 |
2:48 |
3:12 |
3:36 |
4:00 |
4:24 |
4:48 |
5:12 |
5:36 |
6:00 |
|
30 mph |
0:20 |
0:40 |
1:00 |
1:20 |
1:40 |
2:00 |
2:20 |
2:40 |
3:00 |
3:20 |
3:40 |
4:00 |
4:20 |
4:40 |
5:00 |
|
35 mph |
0:17 |
0:34 |
0:51 |
1:09 |
1:26 |
1:43 |
2:00 |
2:17 |
2:34 |
2:51 |
3:09 |
3:26 |
3:43 |
4:00 |
4:17 |
|
40 mph |
0:15 |
0:30 |
0:45 |
1:00 |
1:15 |
1:30 |
1:45 |
2:00 |
2:15 |
2:30 |
2:45 |
3:00 |
3:15 |
3:30 |
3:45 |
|
45 mph |
0:13 |
0:26 |
0:39 |
0:52 |
1:06 |
1:19 |
1:33 |
1:46 |
2:00 |
2:13 |
2:26 |
2:40 |
2:53 |
3:06 |
3:19 |
|
50 mph |
0:12 |
0:24 |
0:36 |
0:48 |
1:00 |
1:12 |
1:24 |
1:36 |
1:48 |
2:00 |
2:12 |
2:24 |
2:36 |
2:48 |
3:00 |
|
55 mph |
0:11 |
0:22 |
0:33 |
0:44 |
0:56 |
1:05 |
1:16 |
1:27 |
1:38 |
1:49 |
2:00 |
2:11 |
2:22 |
2:33 |
2:44 |
|
60 mph |
0:10 |
0:20 |
0:30 |
0:40 |
0:50 |
1:00 |
1:10 |
1:20 |
1:30 |
1:40 |
1:50 |
2:00 |
2:10 |
2:20 |
2:30 |
If a storm is moving at 60 mph, it would take 1 minute to go 1 mile.
If a storm is moving at 30 mph, it would take 2 minute to go 1 mile. (one half mile per minute)
If the ch 3 live radar is 10 minute old, and the storm is moving at 30 mph, that would mean the radar map is 5 miles behind the storm.