Tornadoes · United States · Iowa · 2012
EF1 tornado, Wright to Oskaloosa Muni Arpt, Iowa, April 14, 2012
From Wright to Oskaloosa Muni Arpt, this EF1 tornado ran 1.3 miles across Mahaska County on April 14, 2012, touching down at 9:22 PM CDT and reaching 90 yards wide. It killed nobody, and did $75,000 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 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 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.
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
- EF1
- Date
- April 14, 2012
- Touchdown
- 9:22 PM CDT (02:22 UTC)
- Lifted
- 9:24 PM CDT (02:24 UTC)
- On the ground
- 2 minutes
- Path length
- 1.3 miles (2.0 km)
- Path width
- 90 yards (82 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $75,000
- County
- Mahaska County
- Touchdown point
- 41.250, -92.509
- Lift-off point
- 41.249, -92.485
- Record number
- 1204142022-01
The damage survey
2 damage points were recorded along this path by NWS DMX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 93 mph.
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
The first significant severe weather outbreak of the season took place during the afternoon and evening of the 14th with all modes of severe weather taking place. An upper level low pressure lifted northeast out of the southwest U.S. The upper level center, as well as the surface low, passed northwest of Iowa, across southeast South Dakota into Minnesota. Severe weather developed north of the warm front as it lifted north into Iowa. A cluster of severe storms formed over northeast Kansas and southeast Nebraska. These storms moved east-northeast along the warm front into Iowa, causing a considerable amount of severe weather. Severe weather parameters were fairly strong, however the dynamics of a 100 kt mid level jet and 60 kt low level jet made up the difference. Just prior to the storm development, CAPE values were around 4000 J/kg south of the development. Helicity was high, in the 300 to 500 range. There was a large amount of effective shear with 50 to 65 kts available. CAPE in the -10 to -30 layer of the atmosphere was in the 200 to 400 J/kg range, while downdraft CAPE was 600 to 800 J/kg. Plenty of low level moisture was drawn into the state on the strong low level jet. Precipitable water vales rose to 1.25 inches quite rapidly. The LCL level was relatively high, but given the dynmics was relatively easy to overcome. The LCL was just under 1000 meters at the beginning of the event. There were three tornadoes reported during the event. One was northwest of the Creston area in Union County. The most significant tornado caused high end EF2 damage to the far northwest corner of Creston. This tornado formed southwest of Cromwell at 1752 CST in Adams county and quickly tracked into northwest Creston around 1800 CST. EF2 damage occurred to the Greater Regional Medical Center and the Southwestern Community College campus. The tornado continued tracking to the northeast and damaged several farmsteads northeast of Creston before dissipating about 10 miles northeast of town at approximately 1815 CST. The wind strength was estimated to be 130 MPH. Significant damage occurred with uninsured damage alone near $2,000,000. A tornado touched down in Warren County east of New Virginia. The tornado caused damage to farm buildings and campers with a considerable amount of sheet metal left lying around. The EF1 tornado produced winds around 100 MPH. Many of the thunderstorms brought with them high winds and hail. The final tornado touched down in Mahaska County. The tornado was an EF1 tornado with a broad and intense rear flank downdraft south of the track. The AWOS site at the Oskaloosa airport in Mahaska County recorded a 97 MPH wind gust from the rear flank downdraft of the storm. Reports from the Emergency Manager indicated that damage at the airport was limited to two hangar doors and some damage to airport buildings. There were no planes on the field at the time. Numerous reports of hail larger than quarter size were received. Some of the larger hail included baseball size hail in Clarke County at Murray and numerous reports of golf ball size hail along the track of the severe cluster from Union County to Mahaska County. The same cluster of storms also produced very strong winds along its path. Numerous reports of 60 to 70 MPH winds were received all along the path. Numerous reports of tree and power line damage were received. The Des Moines metro area was hard hit with winds of up to 65 MPH causing considerable tree damage. At one time, 20,000 customers were reported without power. In Marion County a garage was destroyed and a house significantly damaged by the wind east of Knoxville. The storms also produced very heavy rainfall. Rainfall of 2 to 4 inches was reported at several locations. At the Des Moines International Airport, 1.10 inches of rain fell between 1630 and 1637 CST. This amount of rainfall in that short of period of time was a 100 year event. Fortunately it had been quite dry across the state, limiting the flash flood potential. Flash flooding was reported in Polk, Cass, and Madison Counties. Water was reported flowing one to two feet deep. Numerous reports were also received of street flooding and significant ponding.
The tornado was determined to be an EF1 with a broad and intense rear flank downdraft south of the track. Peak wind was around 100 MPH.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The forecast that day
The Storm Prediction Center had this point in a Moderate Risk, with a 0.10 chance of a tornado within 25 miles. The outlook in force was issued at 01:00 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.
What forecasters said that day
The local office's own words before the tornado touched down, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before the tornado touched down at Apr 14, 5:51 PM CDT, 3 hours 31 minutes earlier.
Area forecast discussion, Apr 14, 5:51 PM CDT, 3 hours 31 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 551 PM CDT SAT APR 14 2012 .UPDATE 15/00Z AVIATION DISCUSSION... .SHORT TERM /TONIGHT/... WARM FRONT WILL LIFT NORTH ACROSS CENTRAL IOWA TONIGHT AND IT WILL BE THE FOCUS OF SEVERE THUNDERSTORMS. TORNADOES ARE MOST LIKELY EARLY ON NEAR THE WARM FRONT WHERE THE SEVERE WEATHER PARAMETERS ARE MAXIMIZED. AS STORMS LIFT NORTHEAST...THEY SHOULD REMAIN SEVERE DUE TO VERY HIGH SHEAR VALUES. HIGH POPS TONIGHT WITH SEVERE WORDING. HAVE HAD REPORTS ABOUT HEAVY RAIN FROM THE STORMS OVER EASTERN NEBRASKA. WOULD THINK AS THE DRY SLOT ARRIVES THIS EVENING DRYING THE MID LEVELS WHICH SHOULD REDUCE PWAT AND GIVEN THE RELATIVE QUICK SPEED OF THE CELLS...FLASH FLOODING SHOULD NOT BE A SIGNIFICANT WIDESPREAD THREAT. .LONG TERM /SUNDAY THROUGH SATURDAY/... COMPLEX BEGINNING TO THE EXTENDED PERIOD WITH LINGERING PRECIPITATION AND SEVERE POTENTIAL WITH LOW PRESSURE PUSHING NORTHEAST. MODELS HAVE COME TO A DECENT AGREEMENT WITH THE TRACK OF THE LOW AND THE TIMING...PUSHING LOW INTO NE/SD/MN/IA BORDER REGION BY 18Z SUNDAY. MODELS ALSO CONTINUE TO DEEPEN LOW AS IT PULLS NORTHEASTWARD. WILL SEE PRECIPITATION LINGERING AHEAD OF FRONTAL BOUNDARY SUNDAY...BEFORE DRY SLOT ARRIVES. HOWEVER...HAVE LEFT CHANCES FOR PRECIPITATION ACROSS CWA SUNDAY AFTERNOON WITH POTENTIAL FOR PEAK HEATING TO DEVELOP THUNDERSTORMS. DECENT CAPE AND GOOD SHEER VALUES COULD LEAD TO SOME SEVERE STORMS SUNDAY AFTERNOON. HOWEVER...BEST CHANCES ARE TO THE NORTH AND EAST ACROSS WISCONSIN AND NE IOWA. ANOTHER MAJOR CONCERN FOR SUNDAY IS WITH SOUTH WINDS. WILL SEE GOOD MIXING...NEARLY UP TO 750MB IF FULL MIXING IS REALIZED. WINDS THROUGH THE MIXED LAYER ARE 50KTS-60KTS...AND COULD SEE MIXING REALIZED AT SURFACE. ESPECIALLY WITH DRY SLOT AND LIKELY CLEARING SKIES. IN ADDITION...LAPSE RATES WILL BE HIGH AND FAVORABLE FOR STRONG WINDS. WILL LIKELY NEED TO SEE A WIND ADVISORY...POSSIBLY A HIGH WIND WARNING FOR PORTIONS OF THE AREA SUNDAY AFTERNOON. WITH CONVECTIVE CONCERNS THROUGH THE OVERNIGHT HOURS HAVE NOT ISSUED WIND HEADLINES WITH THIS PACKAGE. FOR MONDAY....MODELS CONTINUE TO PULL LOW NORTH...BUT HAVE SLOWED TIMING AND DISAGREE ON HOW FAR NORTH LOW REACHES BY 06Z MONDAY. HAVE LEFT CHANCES FOR PRECIPITATION ACROSS NORTHERN IOWA SUNDAY NIGHT WITH POTENTIAL FOR SOME WRAP AROUND PRECIPITATION. HAVE DECREASED CHANCES FOR MONDAY AS LOW CONTINUES TO PULL AWAY FROM REGION. BEHIND LOW COLD TEMPERATURES WILL PUSH IN...WITH 850MB TEMPS NEAR -2 DEGREES C FOR MONDAY AFTERNOON. HAVE CONTINUED COOL TREND FOR MONDAY AND MONDAY NIGHT WITH COLD PUSH OF AIR. MAY NEED FROST/FREEZE HEADLINES FOR OVERNIGHT MONDAY NIGHT ESPECIALLY IN THE NORTH. HOWEVER...SOUTHERLY FLOW RETURNS QUICKLY WITH WARMING TEMPERATURES THROUGH THE END OF THE WEEK. ZONAL FLOW WILL DOMINATE THROUGH THE WEEK WITH A SHORTWAVE PUSHING THROUGH MONDAY NIGHT. HAVE TAKEN OUT PRECIP CHANCES AS BEST MOISTURE REMAINS FURTHER SOUTH ACROSS NORTHERN MO BUT COULD SEE SOME LIGHT RAIN. NEXT BIG SYSTEM WILL COME TOWARDS MID WEEK AS ANOTHER AREA OF LOW PRESSURE TRACKS ACROSS THE NORTHERN PLAINS. CURRENT TRACK IS ACROSS DAKOTAS/NORTHERN MINNESOTA WITH ASSOCIATED FRONTAL BOUNDARY PUSHING ACROSS IOWA WEDNESDAY. A BRIEF BREAK IN PRECIP BEFORE YET ANOTHER LOW PRESSURE SYSTEM TRACKS ACROSS SOUTHERN PLAINS AND BRINGS PRECIPITATION CHANCES FOR THE REMAINDER OF THE PERIOD. STILL UNCERTAINTY IN MODELS...AND HAVE LEFT MOSTLY CHANCE AND SLIGHT CHANCE WORDING FOR POPS THROUGH EXTENDED. && .AVIATION...15/00Z NUMEROUS CONCERNS THIS PERIOD...INCLUDING ONGOING TORNADO AND HEAVY RAIN/HAIL THREAT ACROSS THE SOUTH AS LARGE MCS WITH EMBEDDED SUPERCELLS CROSSES SOUTHERN IOWA...MAINLY TIED TO ADVANCING WARM FRONT. AS SYSTEM MOVES NORTH WITH FRONTAL BOUNDARY THIS EVENING... MORE STORMS ARE LIKELY TO FORM ACROSS THE REGION IN THE WARM SECTOR WITH POTENTIAL FOR ADDITIONAL SEVERE WEATHER THROUGH THE NIGHT. ANOTHER LINE OF STORMS SHOULD BEGIN TO DEVELOP TOWARD 12Z AS STRONGER UPPER LEVEL JET MOVES INTO THE REGION. AS THE DRY LINE/FRONT PASS EAST OF THE REGION BY 18Z INTENSE JET WINDS WILL BEGIN TO MIX TO THE SFC SETTING THE STAGE FOR HIGH IMPACT WINDS GUSTING TO NEAR 50KTS ACROSS THE REGION. WITH POTENTIAL SEVERE WEATHER TONIGHT...AIRPORT OPERATIONS CAN EXPECT TO SEE DELAYS AND SIGNIFICANT INTERRUPTIONS AS STORMS PASS THROUGH THE AREA. ALSO... WITH FORECAST WINDS EXPECTED ON SUNDAY...ADDITIONAL PROBLEMS WITH HIGH WIND THREAT WILL BEGIN WEST BY 15Z AND CONTINUE TO ADVANCE TOWARD I35 CORRIDOR BY 17-18Z AND EAST BY 19-20Z. ADDITIONAL DETAILS WILL BE ADDED WITH 06Z PACKAGE AS EVENT UNFOLDS. /REV && .DMX WATCHES/WARNINGS/ADVISORIES...NONE. && SHORT TERM...JOHNSON LONG TERM...AWB AVIATION...REV
Hazardous weather outlook, Apr 14, 3:18 PM CDT, 6 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 318 PM CDT SAT APR 14 2012 IAZ033-044-045-057-058-070-071-081-082-092-093-152030- SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-CASS-ADAIR-ADAMS-UNION-TAYLOR- RINGGOLD- 318 PM CDT SAT APR 14 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TONIGHT THERE IS A MODERATE RISK OF SEVERE WEATHER FOR TONIGHT. LARGE HAIL...DAMAGING WINDS...TORNADOES...AND LOCALLY HEAVY RAINFALL WILL ALL BE POSSIBLE WITH THE THUNDERSTORM ACTIVITY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THERE IS A SLIGHT CHANCE OF NON-SEVERE THUNDERSTORMS LINGERING INTO SUNDAY MORNING. THERE ARE ALSO CHANCES FOR THUNDERSTORMS WEDNESDAY AND THURSDAY. AT THIS TIME THE POTENTIAL FOR SEVERE IS LOW. STRONG AND GUSTY SOUTHWESTERLY WINDS ARE POSSIBLE SUNDAY INTO SUNDAY NIGHT. WINDS SPEEDS AND GUSTS WILL APPROACH ADVISORY CRITERIA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON INTO TONIGHT. IAZ004>007-015>017-023>028-034>039-046>050-059>062-072>075-083>086- 094>097-152030- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER- HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-TAMA- DALLAS-POLK-JASPER-POWESHIEK-MADISON-WARREN-MARION-MAHASKA-CLARKE- LUCAS-MONROE-WAPELLO-DECATUR-WAYNE-APPANOOSE-DAVIS- 318 PM CDT SAT APR 14 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE WEATHER FOR TONIGHT. LARGE HAIL...DAMAGING WINDS...ISOLATED TORNADOES...AND LOCALLY HEAVY RAINFALL WILL ALL BE POSSIBLE WITH THE THUNDERSTORM ACTIVITY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORM CHANCES CONTINUE INTO SUNDAY...AND AGAIN WEDNESDAY AND THURSDAY. AT THIS TIME THE SEVERE POTENTIAL IS LOW. STRONG AND GUSTY SOUTHWESTERLY WINDS ARE POSSIBLE SUNDAY INTO SUNDAY NIGHT. WINDS SPEEDS AND GUSTS WILL APPROACH ADVISORY CRITERIA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE LIKELY THIS AFTERNOON INTO TONIGHT.
In the hours before
Local storm report, Apr 14, 9:04 PM CDT, 18 minutes before
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</html>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), 00:00Z
2.4 hours before the tornado, 171 km from the path. April 15, 2012.
- Mixed-layer CAPE
- 300 J/kg
- Mixed-layer CIN
- -50 J/kg
- Surface CAPE
- 115 J/kg
- Mixed-layer LCL
- 726 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
- 0-3 km lapse rate
- 6.1 K/km
The surface observations
Oskaloosa (OOA), 3 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 00:00 UTC |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Des Moines radar (KDMX), 115 km away, was scanning. The volume nearest the touchdown began at 02:23 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 2012 tornado in IowaEvery tornado in Iowa since 1950Warnings in force in Iowa nowThe forecast where you are
The other tornadoes of April 14, 2012
83 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| April 14 | 11:38 AM CDT | EF1 | Pawnee, KS | 4.1 | 100 | $35,000 | ||
| April 14 | 12:14 PM CDT | EF1 | Rush, KS | 17.2 | 200 | $125,000 | ||
| April 14 | 1:23 PM CDT | EF0 | Russell, KS | 0.5 | 75 | |||
| April 14 | 1:34 PM CDT | EF0 | Russell, KS | 1.8 | 75 | |||
| April 14 | 1:43 PM CDT | EF0 | Russell, KS | 2.9 | 75 | |||
| April 14 | 1:57 PM CDT | EF1 | Ford, KS | 33.7 | 200 | |||
| April 14 | 2:03 PM CDT | EF1 | Mitchell, KS | 4.0 | 300 | $100,000 | ||
| April 14 | 2:10 PM CDT | EF0 | Nuckolls, NE | 3.1 | 40 | |||
| April 14 | 2:24 PM CDT | EF1 | Clark, KS | 6.3 | 150 | |||
| April 14 | 2:28 PM CDT | EF0 | Monona, IA | 0.4 | 25 | |||
| April 14 | 2:30 PM CDT | EF0 | Thayer, NE | 0.0 | 25 | |||
| April 14 | 2:56 PM CDT | EF0 | Thayer, NE | 0.3 | 60 | $350,000 | ||
| April 14 | 3:24 PM CDT | EF1 | Pawnee, KS | 4.7 | 100 | |||
| April 14 | 3:28 PM CDT | EF1 | Edwards, KS | 9.3 | 100 | |||
| April 14 | 3:49 PM CDT | EF0 | Woodward, OK | 4.0 | 30 | |||
| April 14 | 3:59 PM CDT | EF1 | Woodward, OK | 0.5 | 30 | |||
| April 14 | 3:59 PM CDT | EF1 | Comanche, KS | 10.9 | 125 | |||
| April 14 | 4:04 PM CDT | EF0 | Rush, KS | 0.9 | 75 | |||
| April 14 | 4:25 PM CDT | EF1 | Stafford, KS | 9.8 | 150 | |||
| April 14 | 4:26 PM CDT | EF0 | Woodward, OK | 0.2 | 30 | |||
| April 14 | 4:33 PM CDT | EF0 | Woods, OK | 0.3 | 30 | |||
| April 14 | 4:35 PM CDT | EF1 | Stafford, KS | 14.3 | 150 | |||
| April 14 | 4:44 PM CDT | EF0 | Pratt, KS | 2.3 | 100 | |||
| April 14 | 4:50 PM CDT | EF0 | Barton, KS | 0.5 | 50 | |||
| April 14 | 4:50 PM CDT | EF0 | Johnson, NE | 2.8 | 100 | |||
| April 14 | 4:56 PM CDT | EF2 | Johnson, NE | 5.8 | 440 | |||
| April 14 | 5:02 PM CDT | EF0 | Kingman, KS | 0.5 | 50 | |||
| April 14 | 5:07 PM CDT | EF0 | Johnson, NE | 3.8 | 100 | |||
| April 14 | 5:08 PM CDT | EF0 | Pratt, KS | 2.3 | 75 | |||
| April 14 | 5:18 PM CDT | EF0 | Lincoln, NE | 0.1 | 20 | |||
| April 14 | 5:18 PM CDT | EF0 | Woodward, OK | 0.2 | 30 | |||
| April 14 | 5:21 PM CDT | EF1 | Otoe, NE | 2.0 | 200 | |||
| April 14 | 5:24 PM CDT | EF0 | Woodward, OK | 0.2 | 30 | |||
| April 14 | 5:27 PM CDT | EF0 | Lincoln, NE | 0.0 | 10 | |||
| April 14 | 5:28 PM CDT | EF0 | Lincoln, NE | 0.0 | 10 | |||
| April 14 | 5:28 PM CDT | EF0 | Lincoln, NE | 0.0 | 20 | |||
| April 14 | 5:28 PM CDT | EF2 | Fremont, IA | 12.2 | 880 | 4 | ||
| April 14 | 5:32 PM CDT | EF0 | Lincoln, NE | 0.5 | 20 | |||
| April 14 | 5:33 PM CDT | EF4 | Rice, KS | 50.3 | 400 | |||
| April 14 | 5:47 PM CDT | EF0 | Lincoln, NE | 0.0 | 10 | |||
| April 14 | 6:15 PM CDT | EF0 | Woodward, OK | 0.2 | 30 | |||
| April 14 | 6:16 PM CDT | EF0 | Harlan, NE | 0.8 | 40 | $75,000 | ||
| April 14 | 6:30 PM CDT | EF0 | Kingman, KS | 1.3 | 50 | |||
| April 14 | 6:36 PM CDT | EF0 | Lincoln, NE | 15.1 | 20 | |||
| April 14 | 6:50 PM CDT | EF0 | Saline, KS | 0.6 | 50 | |||
| April 14 | 6:50 PM CDT | EF0 | Woodward, OK | 0.1 | 20 | |||
| April 14 | 6:51 PM CDT | EF0 | Woodward, OK | 0.2 | 50 | |||
| April 14 | 6:52 PM CDT | EF2 | Adams, IA | 16.6 | 800 | 2 | $5.0 million | |
| April 14 | 6:55 PM CDT | EF0 | Kingman, KS | 0.2 | 50 | |||
| April 14 | 6:55 PM CDT | EF1 | Saline, KS | 15.8 | 100 | $10,000 | ||
| April 14 | 7:01 PM CDT | EF0 | Major, OK | 0.1 | 30 | |||
| April 14 | 7:06 PM CDT | EF1 | Woods, OK | 7.2 | 150 | |||
| April 14 | 7:10 PM CDT | EF0 | Reno, KS | 0.3 | 50 | |||
| April 14 | 7:19 PM CDT | EF0 | Woods, OK | 1.0 | 75 | |||
| April 14 | 7:30 PM CDT | EF0 | Woods, OK | 9.0 | 400 | |||
| April 14 | 7:31 PM CDT | EF0 | Dickinson, KS | 3.3 | 25 | |||
| April 14 | 7:47 PM CDT | EF1 | Alfalfa, OK | 10.0 | 400 | |||
| April 14 | 7:54 PM CDT | EF1 | Warren, IA | 0.8 | 75 | $200,000 | ||
| April 14 | 7:57 PM CDT | EF0 | Alfalfa, OK | 12.0 | 400 | |||
| April 14 | 8:03 PM CDT | EF0 | McPherson, KS | 0.6 | 100 |
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.