Tornadoes · United States · Nebraska · 2005

F0 tornado, Belgrade, Nebraska, May 7, 2005

This F0 tornado ran 0.5 miles across Nance County on May 7, 2005, touching down at 7:35 PM CDT and reaching 30 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. F040 to 72 mphthis tornado

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F173 to 112 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mph

    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.

  4. F3158 to 206 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4207 to 260 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5261 to 318 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.

  7. 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
F0
Date
May 7, 2005
Touchdown
7:35 PM CDT (00:35 UTC)
Path length
0.5 miles (0.8 km)
Path width
30 yards (27 m)
Deaths
0
Injuries
0
County
Nance County
Touchdown point
41.480, -97.980
Lift-off point
41.480, -97.980
Record number
793

What the Weather Service recorded

The initial "big" severe weather event for the 2005 season was quite a deal across south central Nebraska as several tornadoes were sighted. Of all the tornadoes, the most significant one occurred just east of Holdrege. The tornado set down south of Holdrege and bounced its way to the northeast side of town. About 5 miles south of Holdrege, two sheds were destroyed. This tornado damaged a hanger at Brewster Field and hit another farm just northeast of town. Five windows were blown out in the farm house along with other minor house damage. A barn was destroyed. Across the road, a center pivot irrigation system was heavily damaged. As the evening continued, there were numerous other tornado reports from Holdrege to east of Kearney. In Buffalo County, several twisters were sighted. One tornado displaced a barn onto a garage at a farm northwest of Gibbon. Another tornado kicked up quite a large dust cloud, but fortunately was in open county as it passed well north of Shelton. In Hall County, yet another tornado set down north of Wood River, but again causing no damage. The severe thunderstorms brought the usual entourage of hail, some wind and a little rain. Hail to the size of baseballs was reported in Kearney and there was vehicle and home damage scattered throughout the city. Golf ball size hail was reported at Oxford. Moth ball size hail was reported at Loomis and two inch in diameter size hail was reported near Palmer.

A very brief tornado was reported east of Belgrade. The tornado caused no damage.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

33 minutes of warning. NWS GID issued a tornado warning for this county at 00:02 UTC, 33 minutes before the tornado touched down, in force until 00:57 UTC.

Issued (UTC)ExpiredProductOffice
00:02 UTC00:57 UTCTornado WarningGID
00:58 UTC01:26 UTCSevere Thunderstorm WarningGID
03:24 UTC04:32 UTCTornado WarningGID

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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:45 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.

Omaha, NE (KOAX), 00:00Z

0.6 hours before the tornado, 135 km from the path. May 8, 2005.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2005-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 82 joules per kilogram, CIN -172, lifted condensation level 1942 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Omaha, NE at 00:00Z on 2005-05-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 114 square meters per square second, 0 to 6 km bulk shear 33 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
82 J/kg
Mixed-layer CIN
-172 J/kg
Surface CAPE
421 J/kg
Mixed-layer LCL
1942 m above ground
0-6 km bulk shear
33 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2
0-3 km lapse rate
7.4 K/km

Open this sounding in Storm Lab

Omaha, NE (KOAX), 12:00Z

11.4 hours after it, 135 km from the path. May 8, 2005.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2005-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 446 joules per kilogram, CIN -93, lifted condensation level 704 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Omaha, NE at 12:00Z on 2005-05-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 162 square meters per square second, 0 to 6 km bulk shear 34 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
446 J/kg
Mixed-layer CIN
-93 J/kg
Surface CAPE
242 J/kg
Mixed-layer LCL
704 m above ground
0-6 km bulk shear
34 kt
0-1 km bulk shear
29 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.0
0-3 km lapse rate
6.1 K/km

Open this sounding in Storm Lab

The surface observations

Albion (BVN), 28 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
22:50 UTC7755.4180° 17 kt311003
23:10 UTC75.255.4180° 21 kt301003
23:30 UTC75.255.4180° 18 kt261003
23:50 UTC73.455.4180° 20 kt271003
00:10 UTC73.455.4180° 16 kt281003VCTS
00:30 UTC73.457.2220° 12 kt221003.7VCTS
00:50 UTC60.855.4200° 11 kt181004.1TSRA
01:10 UTC60.851.8160° 6 kt1004.1-TSRA
01:30 UTC60.853.6170° 11 kt141004.1-VCTSRA
01:50 UTC5953.6160° 8 kt1002.7-VCTSRA
02:10 UTC60.853.6210° 10 kt171004.7-TSRA
02:30 UTC62.655.4250° 6 kt1004.7-TSRA

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Grand Island radar (KUEX), 135 km away, was scanning. The volume nearest the touchdown began at 00:36 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.

This ground now

The live radar over the trackEvery 2005 tornado in NebraskaEvery tornado in Nebraska since 1950Warnings in force in Nebraska nowThe forecast where you are

The other tornadoes of May 7, 2005

7 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 74:56 PM CDTF0Phelps, NE9.060$250,000
May 75:18 PM CDTF0Kearney, NE0.130
May 75:39 PM CDTF0Buffalo, NE0.130
May 76:00 PM CDTF0Buffalo, NE0.130
May 76:00 PM CDTF0Buffalo, NE1.545$50,000
May 76:15 PM CDTF0Buffalo, NE9.090$30,000
May 76:30 PM CDTF0Hall, NE0.530

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.