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Storm Events Database
Event Details:
Event | Tornado |
-- Scale | EF2 |
-- Length | 0.75 Miles |
-- Width | 230 Yards |
State | WISCONSIN |
County/Area | MARATHON |
WFO | GRB |
Report Source | NWS Storm Survey |
NCEI Data Source | CSV |
Begin Date | 2025-05-15 16:27 CST-6 |
Begin Location | 2SSW COLBY |
Begin Lat/Lon | 44.898/-90.315 |
End Date | 2025-05-15 16:28 CST-6 |
End Location | 1S COLBY |
End Lat/Lon | 44.9053/-90.3038 |
Deaths Direct/Indirect | 0/0 (fatality details below, when available...) |
Injuries Direct/Indirect | 0/0 |
Property Damage | 0.00K |
Crop Damage | 0.00K |
Episode Narrative | Showers and thunderstorms developed ahead of an occluded front Thursday afternoon (5/15) across western Wisconsin. Storms tracked through the area during the late afternoon and early evening hours. The strongest storms produced 3 tornadoes, damaging winds, and large hail up to golf ball size across central and north-central Wisconsin. |
Event Narrative | A tornado developed in fields west of Unity in Clark County (NWS La Crosse warning area) at 5:21 pm CDT before tracking northeast toward Colby. The tornado moved through rural areas of northeastern Clark County, damaging multiple farm outbuildings, trees, power poles, and a home before crossing Highway 13 into western Marathon County at 5:27 pm CDT. The tornado tracked through the southeastern edge of Colby damaging another home, multiple outbuildings, power poles, and a car dealership before dissipating at 5:28 pm CDT. Total path length is estimated to be 4.81 miles long, with a width of 230 yards. Peak wind estimated to be around 120 mph. |
Event Map:
Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.All events for this episode:
Location | County/Zone | St. | Date | Time | T.Z. | Type | Mag | Dth | Inj | PrD | CrD |
---|---|---|---|---|---|---|---|---|---|---|---|
Totals: | 0 | 0 | 0.00K | 0.00K | |||||||
KELLNER | PORTAGE CO. | WI | 05/15/2025 | 15:37 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
COLBY | MARATHON CO. | WI | 05/15/2025 | 16:27 | CST-6 | Tornado | EF2 | 0 | 0 | 0.00K | 0.00K |
RIB FALLS | MARATHON CO. | WI | 05/15/2025 | 16:41 | CST-6 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
BANCROFT | PORTAGE CO. | WI | 05/15/2025 | 16:52 | CST-6 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
CODDINGTON | PORTAGE CO. | WI | 05/15/2025 | 17:06 | CST-6 | Hail | 1.50 in. | 0 | 0 | 0.00K | 0.00K |
ROTHSCHILD | MARATHON CO. | WI | 05/15/2025 | 17:10 | CST-6 | Hail | 1.75 in. | 0 | 0 | 0.00K | 0.00K |
SCHOFIELD | MARATHON CO. | WI | 05/15/2025 | 17:15 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
SCHOFIELD | MARATHON CO. | WI | 05/15/2025 | 17:20 | CST-6 | Hail | 1.25 in. | 0 | 0 | 0.00K | 0.00K |
MERRILL MUNI ARPT | LINCOLN CO. | WI | 05/15/2025 | 17:21 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
WAUSAU | MARATHON CO. | WI | 05/15/2025 | 17:45 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
HARSHAW | ONEIDA CO. | WI | 05/15/2025 | 17:49 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
LAKE EMILY | PORTAGE CO. | WI | 05/15/2025 | 17:50 | CST-6 | Hail | 1.50 in. | 0 | 0 | 0.00K | 0.00K |
Totals: | 0 | 0 | 0.00K | 0.00K |