Tornadoes · United States · Nebraska · 2024
EF2 tornado, Lemoyne to Lake Mc Conaghy, Nebraska, May 23, 2024
From Lemoyne to Lake Mc Conaghy, this EF2 tornado ran 0.3 miles across Keith County on May 23, 2024, touching down at 5:39 PM MDT and reaching 200 yards wide. It killed nobody, and did $3.5 million of property damage.
The rating scale
Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.
EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mphthis tornado
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.
The record
- Rating
- EF2
- Date
- May 23, 2024
- Touchdown
- 5:39 PM MDT (23:39 UTC)
- Lifted
- 5:42 PM MDT (23:42 UTC)
- On the ground
- 3 minutes
- Path length
- 0.3 miles (0.5 km)
- Path width
- 200 yards (183 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $3.5 million
- County
- Keith County
- Touchdown point
- 41.260, -101.780
- Lift-off point
- 41.270, -101.770
- Record number
- 2405231739-01
The damage survey
43 damage points were recorded along this path by NWS LBF, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF2. The highest wind the damage implies is 125 mph.
- Camper 12 foot long slingshot by crossroads, rolled twice.
- Cottonwood tree branches downed.
- Multiple trees downed, either uproot or snapped at trunk. One has visible twisted damage. Cottonwood trees, facing north.
- Approximately 20 foot camper blown over. Tree damage nearby.
Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.
What the Weather Service recorded
Thunderstorms developed over the central Nebraska Panhandle during the mid afternoon hours of May 23rd. As this activity moved east into better moisture and wind shear, storms became severe. Large hail, damaging winds, and tornadoes were reported.
Photo via social media confirms a tornado touchdown over Lake McConaughy approximately 1.4 miles southwest of Belmar. Time estimated by radar evidence.
A tornado developed over the North Shore neighborhood near Lazy Ike Road and traveled to the southeast. On building experienced complete roof loss and several large cottonwood trees were either uprooted or had top branches snapped off. One tree, approximately two feet in diameter, fell on a vehicle.
A tornado developed in open prairie east of North Shore, where a converging pattern of flattened grass was observed. The tornado traveled north across railroad tracks and flattened a fence line.
A brief, but significant, tornado developed in the Lakeview Subdivision and traveled to the northeast. Multiple dwellings suffered damage, including a large pole barn destroyed and single family homes with roof or exterior wall loss. Multiple trees were also downed.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
10 minutes of warning. NWS LBF issued a tornado warning for this county at 23:29 UTC, 10 minutes before the tornado touched down, in force until 00:04 UTC.
The county was under a severe thunderstorm watch, issued at 20:25 UTC and running to 04:00 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 20:25 UTC | 04:00 UTC | Severe Thunderstorm Watch | LBF |
| 22:30 UTC | 23:15 UTC | Severe Thunderstorm Warning | LBF |
| 22:55 UTC | 23:30 UTC | Tornado Warning | LBF |
| 23:26 UTC | 00:15 UTC | Severe Thunderstorm Warning | LBF |
| 23:29 UTC | 00:04 UTC | Tornado Warning | LBF |
| 23:30 UTC | 00:15 UTC | Tornado Warning | LBF |
| 23:51 UTC | 00:15 UTC | Tornado Warning | LBF |
| 23:52 UTC | 00:30 UTC | Tornado Warning | LBF |
| 23:57 UTC | 00:45 UTC | Severe Thunderstorm Warning | LBF |
| 00:07 UTC | 00:30 UTC | Tornado Warning | LBF |
| 00:25 UTC | 01:15 UTC | Tornado Warning | LBF |
| 00:42 UTC | 01:30 UTC | Severe Thunderstorm Warning | LBF |
Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.
The forecast that day
The Storm Prediction Center had this point in a General Thunderstorms Risk. The outlook in force was issued at 19:50 UTC.
SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.
The air that afternoon
The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.
N. Platte/Lee Bi, NE (KLBF), 12:00Z
11.7 hours before the tornado, 99 km from the path. May 23, 2024.
- Mixed-layer CAPE
- 50 J/kg
- Mixed-layer CIN
- -307 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1275 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 312 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
- 0-3 km lapse rate
- 4.8 K/km
N. Platte/Lee Bi, NE (KLBF), 00:00Z
0.3 hours after it, 99 km from the path. May 24, 2024.
- Mixed-layer CAPE
- 1132 J/kg
- Mixed-layer CIN
- -151 J/kg
- Surface CAPE
- 2114 J/kg
- Mixed-layer LCL
- 1257 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
- 0-3 km lapse rate
- 7.4 K/km
The radar
The North Platte radar (KLNX), 126 km away, was scanning. The volume nearest the touchdown began at 23:36 UTC.
Open the radar archive at this moment, over the track
Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.
What was reported nearby
Local storm reports within 60 km of the path, in the three hours either side.
| Time (UTC) | Report | Where | County | Remark |
|---|---|---|---|---|
| 22:44 UTC | HAIL 1.5 | 9 S Oshkosh | Garden, NE | |
| 22:58 UTC | TORNADO | 5 Ese Lewellen | Keith, NE | Tornado reported by NWS employee. |
| 23:35 UTC | TORNADO | 2 Wsw Brule | Keith, NE | Trained spotter reported a tornado. |
| 23:40 UTC | TORNADO | 2 Ese Lemoyne | Keith, NE | North shore of Lake Maconaughy. Fire department reports 22 buildings destroyed, including homes, outbuildings and shops. 39 homes damaged. One camper destroyed at beach access 17. One camper destroyed at beach access 13. |
| 23:46 UTC | HAIL 1.5 | Brule | Keith, NE | Fire department reported ping pong sized hail in Brule. |
| 23:49 UTC | FUNNEL CLOUD | 1 S Ogallala | Keith, NE | |
| 23:53 UTC | HAIL 1 | Ogallala | Keith, NE | |
| 23:54 UTC | TSTM WND GST 65 | Lemoyne | Keith, NE | Fire Dept estimates 65 mph winds. |
| 23:55 UTC | HAIL 1 | Lemoyne | Keith, NE | Quarter sized hail at the fire department. |
| 23:56 UTC | HAIL 1 | 1 S Ogallala | Keith, NE | Report from mPING: Quarter (1.00 in.). |
| 23:56 UTC | HAIL 2.75 | 1 S Ogallala | Keith, NE | Report from mPING: Baseball (2.75 in.). |
| 23:56 UTC | HAIL 2.75 | 1 Sse Ogallala | Keith, NE | Report from mping. |
| 00:18 UTC | TORNADO | 4 Ene Grant | Perkins, NE | Public report of a tornado. |
| 00:28 UTC | TORNADO | 8 S Paxton | Keith, NE | Report via social media. |
| 00:29 UTC | TORNADO | 6 Nne Grainton | Lincoln, NE | Law enforcement reports a tornado 6 NW of Wallace. |
| 00:54 UTC | HAIL 1 | 6 Sse Paxton | Keith, NE | |
| 00:59 UTC | HAIL 3 | 4 E Madrid | Perkins, NE | Report of 3.5 inch measured hail from storm chaser. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2024 tornado in NebraskaEvery tornado in Nebraska since 1950Warnings in force in Nebraska nowThe forecast where you are
The other tornadoes of May 23, 2024
26 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| May 23 | 3:36 PM MDT | EF1 | Keith, NE | 2.0 | 200 | $450,000 | ||
| May 23 | 4:39 PM CDT | Unrated | Bell, TX | 0.0 | 20 | |||
| May 23 | 4:15 PM MDT | Unrated | Garden, NE | 0.0 | 50 | |||
| May 23 | 5:27 PM CDT | EF1 | Falls, TX | 2.8 | 150 | 2 | $275,000 | |
| May 23 | 5:47 PM CDT | EF0 | Falls, TX | 18.5 | 400 | $500 | ||
| May 23 | 5:12 PM MDT | Unrated | Keith, NE | 0.1 | 25 | |||
| May 23 | 6:14 PM CDT | EF0 | Falls, TX | 16.0 | 300 | |||
| May 23 | 6:17 PM CDT | EF0 | Harmon, OK | 0.8 | 20 | |||
| May 23 | 5:28 PM MDT | Unrated | Adams, ND | 0.2 | 50 | |||
| May 23 | 5:29 PM MDT | EF1 | Keith, NE | 5.2 | 430 | $600,000 | ||
| May 23 | 5:36 PM MDT | EF1 | Keith, NE | 0.1 | 25 | $50,000 | ||
| May 23 | 5:37 PM MDT | EF1 | Keith, NE | 0.3 | 50 | $5,000 | ||
| May 23 | 5:44 PM MDT | EF0 | Keith, NE | 0.1 | 25 | $20,000 | ||
| May 23 | 7:04 PM CDT | EF2 | Jackson, OK | 15.1 | 2,000 | $300,000 | ||
| May 23 | 7:06 PM CDT | EF1 | Henderson, TX | 4.3 | 480 | 6 | $300,000 | |
| May 23 | 7:15 PM CDT | EF0 | Robertson, TX | 14.9 | 300 | |||
| May 23 | 6:17 PM MDT | Unrated | Keith, NE | 6.4 | 25 | |||
| May 23 | 7:25 PM CDT | EF0 | Jackson, OK | 0.9 | 40 | $10,000 | ||
| May 23 | 8:25 PM CDT | Unrated | Hayes, NE | 0.0 | 25 | |||
| May 23 | 9:02 PM CDT | EF1 | Hitchcock, NE | 0.3 | 80 | |||
| May 23 | 9:30 PM CDT | EF0 | Red Willow, NE | 0.4 | 28 | $1,000 | ||
| May 23 | 11:30 PM CDT | EF1 | Phelps, NE | 1.7 | 100 | $200,000 | ||
| May 23 | 11:51 PM CDT | EF0 | Kearney, NE | 4.3 | 75 | $75,000 | ||
| May 23 | 12:00 AM CDT | EF0 | Kearney, NE | 8.4 | 60 | $350,000 | ||
| May 23 | 12:08 AM CDT | EF1 | Howard, NE | 7.0 | 95 | $75,000 | ||
| May 23 | 12:26 AM CDT | EF1 | Adams, NE | 2.5 | 80 | $400,000 |
What this means
Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.