Sioux Falls, SD
Weather Forecast Office
| Hail Diameter | Description | Hail Diameter | Description |
|---|---|---|---|
| 1/4" | Pea Size | 1 3/4" | Golf Ball Size |
| 1/2" | 2" | Hen Egg or Lime Size | |
| 3/4" | Penny Size | 2 1/2" | Tennis Ball Size |
| 7/8" | Nickel Size | 2 3/4" | Baseball Size |
| 1" (Severe Criteria) |
Quarter Size | 3" | Teacup or Apple Size |
| 1 1/4" | Half Dollar Size | 4" | Grapefruit Size |
| 1 1/2" | Walnut or Ping Pong Ball Size | 4 1/2" | Softball Size |
| Wind Speed Estimate | Description |
|---|---|
| 25-31 mph | Large branches in motion; whistling heard in telephone wires |
| 32-38 mph | Whole trees in motion; inconvenience felt walking against the wind |
| 39-54 mph | Twigs break off trees; wind generally impedes progress |
| 55-72 mph (58 mph=Severe Criteria) |
Damage to chimneys and TV antennas; pushes over shallow rooted trees |
| 73-112 mph | Peels surfaces off roofs; windows broken; light mobile homes pushed or overturned; moving cars pushed off road |
| 113-157 mph | Roofs torn off houses; cars lifted off ground |
 |
For further information concerning our spotter program at National Weather Service Sioux Falls, please contact: Peter Rogers, Warning Coordination Meteorologist. |
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Sioux Falls, SD
26 Weather Lane
Sioux Falls, SD 57104-0198
605-330-4247
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