Tornado record · Original Fujita scale

F4 tornado, Webster County, Iowa, May 4, 1977

RatingF4

Deaths0

Injuries14

Length2 mi

Width70 yd

See tornadoes near here

Map

Path

The path

Drawn as a straight line from the recorded start point (42.53, -94.15) to the end point (42.53, -94.15), which is all NOAA's record holds. The real track may have curved.

The record

Date: May 4, 1977, 6:32 PM (as recorded, Central Standard Time)
Rating: F4
States: Iowa
Counties: Webster County
Path: 2 miles long, up to 70 yards wide
Casualties: 0 deaths, 14 injuries

Same day

Other tornadoes on May 4, 1977

Tornadoes, newest first
Date	Rating	State	Path length	Width	Deaths	Injuries
May 4, 1977	F4	Missouri	12 mi	400 yd	0	5
May 4, 1977	F4	Missouri	48.6 mi	880 yd	0	1
May 4, 1977	F3	Missouri	29.8 mi	500 yd	2	15
May 4, 1977	F3	Missouri	26.2 mi	100 yd	1	5
May 4, 1977	F3	Missouri	11.2 mi	700 yd	0	24
May 4, 1977	F3	Nebraska	7.6 mi	200 yd	0	0
May 4, 1977	F3	Kansas	31.6 mi	300 yd	0	1
May 4, 1977	F3	Iowa	17.8 mi	30 yd	0	0
May 4, 1977	F2	Kansas	11.9 mi	50 yd	0	0
May 4, 1977	F2	Iowa	2 mi	60 yd	0	0
May 4, 1977	F2	Iowa	2 mi	10 yd	0	0
May 4, 1977	F2	Iowa	0.1 mi	30 yd	0	1
May 4, 1977	F2	Iowa	1 mi	70 yd	0	4
May 4, 1977	F2	Kansas	7.8 mi	70 yd	0	0
May 4, 1977	F2	Minnesota	0.1 mi	10 yd	0	0
May 4, 1977	F1	Kansas	0.3 mi	50 yd	0	0
May 4, 1977	F1	Missouri	0.1 mi	50 yd	0	0
May 4, 1977	F1	Iowa	4.3 mi	20 yd	0	0
May 4, 1977	F1	Iowa	0.1 mi	20 yd	0	0
May 4, 1977	F1	Nebraska	0.5 mi	20 yd	0	0
May 4, 1977	F1	Minnesota	2 mi	17 yd	0	0
May 4, 1977	F1	Iowa	1 mi	10 yd	0	0
May 4, 1977	F1	Iowa	1 mi	30 yd	0	0
May 4, 1977	F1	Iowa	0.1 mi	10 yd	0	0
May 4, 1977	F1	Iowa	1 mi	20 yd	0	0
May 4, 1977	F1	Indiana	1 mi	50 yd	0	1
May 4, 1977	F1	Indiana	0.5 mi	20 yd	0	0
May 4, 1977	F0	Nebraska	0.2 mi	20 yd	0	0
May 4, 1977	F0	Iowa	1 mi	10 yd	0	0

Nearby

Tornado history nearby

Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.