Tornadoes · United States · Iowa · 1995

F3 tornado, Stockton to New Liberty, Iowa, May 9, 1995

From Stockton to New Liberty, this F3 tornado ran 10.0 miles across Scott and Muscatine counties on May 9, 1995, touching down at 4:55 PM CDT and reaching 73 yards wide. It killed nobody, and did $500,000 to $5 million of property damage.

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 mph

    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 mphthis tornado

    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
F3
Date
May 9, 1995
Touchdown
4:55 PM CDT (21:55 UTC)
Path length
10.0 miles (16.1 km)
Path width
73 yards (67 m)
Deaths
0
Injuries
0
Property damage
$500,000 to $5 million
Counties
Scott and Muscatine counties
Touchdown point
41.580, -90.870
Lift-off point
41.720, -90.880
Record number
293

What the Weather Service recorded

This tornado destroyed 26 farm buildings, 20 of them with major damage. Nine homes were hit, one destroyed, two with major damage and six with minor damage. Seven of the nine homes were farmhouses. Roxanne Paper, with baby boy Logan in arm, was downstairs when the tornado struck. She reported that it sounded like something big was tearing through the house. The Gary Meincke farm was hit very hard. He and his wife watched the tornado touch down south of their farm at around 1630 CDT. Shortly after that they ran with their children to the basement. Debris from the Leroy Feldhahn farm near Stockton was spread over nearby Interstate 80 causing a two mile long traffic jam. Governor Terry Branstad later proclaimed a Disaster Emergency for Scott County.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
20:18 UTC21:00 UTCTornado WarningDVN
20:51 UTC21:45 UTCTornado WarningDVN
22:00 UTC22:15 UTCTornado WarningDVN

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. The outlook in force was issued at 05:57 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.

Davenport, (KDVN), 12:00Z

9.9 hours before the tornado, 31 km from the path. May 9, 1995.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 1995-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 142 joules per kilogram, CIN -25, lifted condensation level 719 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, Davenport, at 12:00Z on 1995-05-09The 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 19 square meters per square second, 0 to 6 km bulk shear 40 knots.1939587897Sfc1 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
142 J/kg
Mixed-layer CIN
-25 J/kg
Surface CAPE
444 J/kg
Mixed-layer LCL
719 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
9 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4
0-3 km lapse rate
5.6 K/km

Open this sounding in Storm Lab

Davenport, (KDVN), 00:00Z

2.1 hours after it, 31 km from the path. May 10, 1995.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 1995-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 173 joules per kilogram, CIN -31, lifted condensation level 711 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, Davenport, at 00:00Z on 1995-05-10The 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 -133 square meters per square second, 0 to 6 km bulk shear 35 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
173 J/kg
Mixed-layer CIN
-31 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
711 m above ground
0-6 km bulk shear
35 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
-133 m²/s²
0-3 km storm-relative helicity
-75 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4
0-3 km lapse rate
5.5 K/km

Open this sounding in Storm Lab

The surface observations

Moline (MLI), 38 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
20:00 UTC7458110° 13 kt201000
21:00 UTC7259100° 11 kt999
21:17 UTC110° 13 kt19998.6
21:29 UTC100° 8 kt999
21:32 UTC90° 13 kt998.6
22:00 UTC6661100° 8 kt998.3
22:41 UTC250° 22 kt301000.3
23:00 UTC6056290° 13 kt201000.3
23:40 UTC220° 5 kt1000.7

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

This ground now

The live radar over the trackEvery 1995 tornado in IowaEvery tornado in Iowa since 1950Warnings in force in Iowa nowThe forecast where you are

The other tornadoes of May 9, 1995

38 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 910:15 AM CDTF1Jackson, MS1.030
May 911:05 AM CDTF0Mobile, AL0.150$500 to $5,000
May 92:30 PM CDTF0Covington, AL2.0100$5,000 to $50,000
May 93:43 PM CDTF0Muscatine, IA0.540$500 to $5,000
May 94:06 PM CDTF0Muscatine, IA0.223$5,000 to $50,000
May 94:07 PM CDTF0Muscatine, IA0.540$5,000 to $50,000
May 94:11 PM CDTF2Cedar, IA7.0100$50,000 to $500,000
May 94:29 PM CDTF0Muscatine, IA0.230$500 to $5,000
May 94:50 PM CDTF0Scott, IA0.223$500 to $5,000
May 95:01 PM CDTF0Morgan, IL0.110
May 95:05 PM CDTF0Morgan, IL0.110
May 95:17 PM CDTF1Saint Clair, IL3.050$50,000 to $500,000
May 95:17 PM CDTF1Scott, IA3.050$500 to $5,000
May 95:22 PM CDTF3Sangamon, IL50.08806$5 million to $50 million
May 95:25 PM CDTF0Bureau, IL5.073$50,000 to $500,000
May 95:35 PM CDTF0Fulton, IL0.110
May 95:40 PM CDTF0Scott, IA0.230$5,000 to $50,000
May 95:40 PM CDTF0Scott, IA0.230$5,000 to $50,000
May 95:40 PM CDTF0Scott, IA0.230$500 to $5,000
May 95:45 PM CDTF1Scott, IA0.540$5,000 to $50,000
May 95:48 PM CDTF0Fulton, IL3.0220
May 96:00 PM CDTF0Henry, IL0.173$5,000 to $50,000
May 96:01 PM CDTF3Bureau, IL22.0300$500,000 to $5 million
May 96:04 PM CDTF1Tazewell, IL4.02202$500,000 to $5 million
May 96:25 PM CDTF0Lee, IL0.550
May 96:38 PM CDTF0Montgomery, IL0.240
May 96:45 PM CDTF0Whiteside, IL1.073
May 97:00 PM CDTF0Montgomery, IL0.240
May 97:10 PM CDTF1DeWitt, IL13.0220$50,000 to $500,000
May 97:15 PM CDTF1Montgomery, IL0.770$5,000 to $50,000
May 97:40 PM CDTF0Talladega, AL1.02001$5,000 to $50,000
May 97:56 PM CDTF1Shelby, IL0.110
May 98:07 PM CDTF0McLean, IL2.0220
May 98:13 PM CDTF1McLean, IL3.0220$50,000 to $500,000
May 98:30 PM CDTF0Shelby, IL1.0220
May 98:40 PM CDTF1Jackson, MS0.223
May 99:00 PM CDTF1Ford, IL5.040$5,000 to $50,000
May 911:40 PM CDTF0Hancock, MS0.323

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.