Tornadoes · United States · Kentucky · 2016

EF0 tornado, Pettit to Thurston, Kentucky, April 27, 2016

Name: EF0 tornado, Pettit to Thurston, Kentucky, April 27, 2016
Start: 2016-04-27T23:22:00.000Z
End: 2016-04-27T23:30:00.000Z
Location: Pettit to Thurston, Kentucky

From Pettit to Thurston, this EF0 tornado ran 4.2 miles across Daviess County on April 27, 2016, touching down at 6:22 PM CDT and reaching 125 yards wide. It killed nobody, and did $100,000 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 mphthis tornado
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 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: EF0
Date: April 27, 2016
Touchdown: 6:22 PM CDT (23:22 UTC)
Lifted: 6:30 PM CDT (23:30 UTC)
On the ground: 8 minutes
Path length: 4.2 miles (6.7 km)
Path width: 125 yards (114 m)
Deaths: 0
Injuries: 0
Property damage: $100,000
County: Daviess County
Touchdown point: 37.689, -87.134
Lift-off point: 37.733, -87.083
Record number: 1604271722-01

The damage survey

39 damage points were recorded along this path by NWS PAH, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 90 mph.

More than half of the mobile home was destroyed. 2 residents took shelter in the windowless portion which was not destroyed.
Resident claimed lightning struck this tree also.
Field vegetation blown down in swirling pattern. Approx. 100 yard width.
Car badly damaged due to flying debris, especially from carport.

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

Large clusters of thunderstorms developed northeastward across western Kentucky as the lower atmosphere warmed and moistened during the afternoon hours. A tongue of low-level moisture extended from northern Mississippi northward across far western Kentucky. Thunderstorms within the moist corridor were aided by large-scale ascent associated with an upper-level trough over the Lower Mississippi Valley. Deep-layer wind shear of 30 to 40 knots was sufficient for several supercell structures which produced large hail and a few tornadoes.

This weak tornado touched down on the west side of U.S. Highway 431 near Panther Creek. Dozens of trees or large tree limbs were broken. There was partial shingle loss and other minor damage to several homes. One home had the front porch blown off. A barn had doors blown off. One vehicle was badly damaged. A stand-alone carport was blown about one-tenth of a mile. Several fences were blown over. The damage path ended near the southeast city limits of Owensboro along U.S. Highway 60, near the intersection with U.S. Highway 231. Peak winds were estimated near 80 mph.

One mobile home was destroyed. At least two dozen other mobile homes were damaged. Mainly minor damage was reported to the mobile homes. Dozens of trees or large limbs were broken. A carport and several privacy fences were blown down. Several homes had partial loss of shingles. The damage path was just south of U.S. Highway 60 between Owensboro and the small community of Thruston. Peak winds were estimated near 90 mph.

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

The warnings

12 minutes of warning. NWS PAH issued a tornado warning for this county at 23:10 UTC, 12 minutes before the tornado touched down, in force until 23:30 UTC.

The county was under a tornado watch, issued at 22:14 UTC and running to 00:29 UTC.

Issued (UTC)	Expired	Product	Office
22:14 UTC	00:29 UTC	Tornado Watch	PAH
23:10 UTC	23:30 UTC	Tornado Warning	PAH
23:14 UTC	02:15 UTC	Flash Flood Warning	PAH
23:17 UTC	23:30 UTC	Tornado Warning	PAH
23:33 UTC	23:45 UTC	Tornado Warning	PAH
23:45 UTC	00:15 UTC	Tornado Warning	PAH

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 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 20:04 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 Paducah, KY wrote its last area forecast discussion before the tornado touched down at Apr 27, 2:44 PM CDT, 3 hours 38 minutes earlier.

Area forecast discussion, Apr 27, 2:44 PM CDT, 3 hours 38 minutes before

Area Forecast Discussion
National Weather Service Paducah KY
244 PM CDT WED APR 27 2016

.SHORT TERM...(Tonight through Friday night)
Issued at 244 PM CDT Wed Apr 27 2016

Models still indicate showers and thunderstorms will be developing
by late this afternoon and will continue into this evening as an
area of low pressure surges out ahead of the approaching cold
front. Not sure of how widespread the convective activity will be,
but for now will go with high chance west to likely pops east late
today into this evening, and make some adjustments as things
develop. Showers and storms should be ending along and west of
the Mississippi River by around midnight, and across the rest of
the PAH forecast area by daybreak as the cold front pushes east of
our region Thursday morning. ECMWF is a little slower with the
cold front, but all the models in general have been a little off
in the timing with this system, so will just go dry after 12z
Thursday for now and make adjustments as needed.

We should see a brief break in our unsettled weather pattern
Thursday into Thursday night as a weak upper level ridge slides
across the area. By 12z Friday, models show a surface low over
the Southern Plains and a warm front lifting northward toward our
region. ECMWF and GFS are in good agreement spreading some
showers and storms into southwest portions of the PAH forecast
area by Friday afternoon, with showers and storms spreading
northeast across our entire region Friday night. Went with chance
pops for our southwest on Friday, the likely southwest to good
chance northeast for Friday night.

It will remain warm into tonight, and the air behind the cold
front is not much cooler than our current air mass, so
temperatures will only drop back a few degrees for Thursday into
Friday night.

.LONG TERM...(Saturday through Wednesday)
Issued at 244 PM CDT Wed Apr 27 2016

At the beginning of the period, a complex pattern over the west US
will be characterized by a couple of lows over the Intermountain
West and Plains. A warm front will be in the vicinity. Will maintain
high PoPs for convection Saturday through Saturday night as energy
ejects ENE across the region from the trof to our west. PoPs for
convection will linger into Sunday. For the Monday through Wednesday
time frame, confidence lowers considerably with respect to the
evolution of the mid tropospheric flow pattern. Will leave a slight
chance of showers in for Tuesday/Wednesday as multiple solutions
suggest the chance. Other periods will be dry for now. However,
there will likely be adjustments to minimal PoP chances. Used a
blend of operational and ensemble MOS with our existing numbers for
temperatures.

&&

.AVIATION...
Issued at 244 PM CDT Wed Apr 27 2016

Shra and Tsra are expected to develop through 00z across the TAF
sites, then taper off from west to east from 02z to 06z. Shra and
tsra are still possible after 06z due to a passing cold front,
but chances are too low to include for now. MVFR conditions are
likely with storms, VFR conditions are expected away from showers
and storms. Winds will be from the southeast to south at 8 to 12
kts with some higher gusts possible into this evening, becoming
southwest around 5 kts during the overnight. Gusty winds and hail
will be possible with stronger storms.

&&

.PAH Watches/Warnings/Advisories...
IL...None.
MO...None.
IN...None.
KY...None.
&&

SHORT TERM...RST
LONG TERM...CN
AVIATION...RST

Hazardous weather outlook, Apr 27, 3:02 AM CDT, 15 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
302 AM CDT WED APR 27 2016

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-281000-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION-JOHNSON-POPE-
HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH-
WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES-
LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL-
UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER-
RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID-
302 AM CDT WED APR 27 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST
MISSOURI.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE STORMS TODAY, PARTICULARLY THIS
AFTERNOON AND EVENING, ACROSS THE BULK OF THE QUAD STATE REGION.
DAMAGING WIND AND LARGE HAIL ARE THE PRIMARY SEVERE WEATHER
HAZARDS EXPECTED, BUT ISOLATED TORNADOES ARE ALSO POSSIBLE. HEAVY
RAIN AND LIGHTNING WILL POSE ADDITIONAL HAZARDOUS THREATS WITH
STRONG OR SEVERE STORMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ADDITIONAL THUNDERSTORMS ARE FORECAST THIS WEEKEND AND MAY INCLUDE
HEAVY RAIN AND SEVERE WEATHER HAZARDS AS WELL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS ANTICIPATED LATER TODAY.

In the hours before

Local storm report, Apr 27, 6:02 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
602 PM CDT WED APR 27 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0601 PM     FLASH FLOOD      HENDERSON               37.84N 87.58W
04/27/2016                   HENDERSON          KY   BROADCAST MEDIA

            ALTERNATE 41 AND 425 IS FLOODED.

&&

BP2

Local storm report, Apr 27, 6:03 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
603 PM CDT WED APR 27 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0603 PM     FLASH FLOOD      EVANSVILLE              37.98N 87.54W
04/27/2016                   VANDERBURGH        IN   BROADCAST MEDIA

            TWO VEHICLES IN HIGH WATER AT MAIN AND DIVISION

&&

BP2

Local storm report, Apr 27, 6:11 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
611 PM CDT WED APR 27 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0515 PM     TSTM WND DMG     HAUBSTADT               38.20N 87.57W
04/26/2016                   GIBSON             IN   LAW ENFORCEMENT

            TREE ACROSS THE ROAD AT INTERSECTION OF US 41 AND 68.
            GRAIN BIN DESTROYED.

&&

KELLYH

Local storm report, Apr 27, 6:12 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
612 PM CDT WED APR 27 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0450 PM     TSTM WND DMG     2 N MCLEANSBORO         38.12N 88.53W
04/26/2016                   HAMILTON           IL   LAW ENFORCEMENT

            TREE LIMBS DOWN ON STATE ROAD 242.

&&

KELLYH

Local storm report, Apr 27, 6:14 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
614 PM CDT WED APR 27 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     TSTM WND DMG     2 S FAIRFIELD           38.35N 88.37W
04/26/2016                   WAYNE              IL   LAW ENFORCEMENT

            POWER LINES DOWN FROM FALLING TREES ON US 45. TREES WERE
            ALSO DOWN IN TOWN.

&&

KELLYH

Local storm report, Apr 27, 6:18 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
618 PM CDT WED APR 27 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0616 PM     FLASH FLOOD      EVANSVILLE              37.98N 87.54W
04/27/2016                   VANDERBURGH        IN   LAW ENFORCEMENT

            FLOODING REPORTED ALONG LLOYD EXPRESSWAY. REPORTS OF A
            FEW WATER RESCUES.

&&

BP2

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.

Nashville Metro, TN (KBNA), 12:00Z

11.4 hours before the tornado, 181 km from the path. April 27, 2016.

Skew-T log-p

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.

Hodograph

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: 669 J/kg
Mixed-layer CIN: -79 J/kg
Surface CAPE: 34 J/kg
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 18 kt
0-1 km bulk shear: 27 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5
0-3 km lapse rate: 4.9 K/km

Open this sounding in Storm Lab

Nashville Metro, TN (KBNA), 00:00Z

0.6 hours after it, 181 km from the path. April 28, 2016.

Skew-T log-p

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.

Hodograph

Mixed-layer CAPE: 279 J/kg
Mixed-layer CIN: -35 J/kg
Surface CAPE: 1011 J/kg
Mixed-layer LCL: 1503 m above ground
0-6 km bulk shear: 30 kt
0-1 km bulk shear: 19 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4
0-3 km lapse rate: 7.5 K/km

Open this sounding in Storm Lab

The radar

The Evansville,IN radar (KVWX), 82 km away, was scanning. The volume nearest the touchdown began at 23:20 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
21:15 UTC	FUNNEL CLOUD	1 W Mortons Gap	Hopkins, KY	JUST WEST OF MORTONS GAP
21:33 UTC	TORNADO	Earlington	Hopkins, KY	ON THE GROUND NEAR EARLINGTON
21:47 UTC	FUNNEL CLOUD	3 Nw Greenville	Muhlenberg, KY	CANNOT SEE WHETHER REACHING THE GROUND DUE TO TREES
21:54 UTC	FUNNEL CLOUD	2 N Greenville	Muhlenberg, KY
22:00 UTC	HAIL 1	Bremen	Muhlenberg, KY
22:06 UTC	HAIL 0.88	Bremen	Muhlenberg, KY
22:11 UTC	HAIL 1	2 N Central City	Muhlenberg, KY
22:13 UTC	HAIL 1.75	Bremen	Muhlenberg, KY	GOLFBALL SIZE HAIL ALSO REPORTED IN MOORMAN
22:15 UTC	TORNADO	3 N Slaughters	Webster, KY	BREIF TORNADO TOUCHDOWN.
22:15 UTC	TORNADO	3 N Slaughters	Webster, KY	BRIEF TORNADO TOUCHDOWN.
22:19 UTC	FUNNEL CLOUD	Beech Grove	Mclean, KY	LAW ENFORCEMENT RECEIVED A FEW PHONE CALLS FROM PUBLIC REPORTING A FUNNEL CLOUD IN THE COMMUNITY. LATE REPORT
22:19 UTC	TSTM WND DMG	Beech Grove	Mclean, KY	WIDESPREAD TREE DAMAGE REPORTED THROUGHOUT THE COMMUNITY. LATE REPORT
22:20 UTC	FUNNEL CLOUD	Central City	Muhlenberg, KY	REPORTED AT CENTRAL CITY ELEMENTARY SCHOOL
22:23 UTC	FLOOD	4 Nw Central City	Muhlenberg, KY	WATER OVER BILLY DRAKE ROAD
22:51 UTC	FLASH FLOOD	Dixon	Webster, KY	FLASH FLOODING BEING REPORTED COUNTY-WIDE.
22:52 UTC	FUNNEL CLOUD	Hanson	Hopkins, KY
22:56 UTC	TSTM WND DMG	2 N Hartford	Ohio, KY	TREE AND POWER LINE DOWN
23:01 UTC	FLASH FLOOD	Henderson	Henderson, KY	ALTERNATE 41 AND 425 IS FLOODED.
23:17 UTC	FLASH FLOOD	Henderson	Henderson, KY	SEVERAL CITY STREETS FLOODED...PORTIONS OF INGRAM ROAD IMPASSABLE.
23:22 UTC	TORNADO	5 Ssw Owensboro	Daviess, KY	EF-0 TORNADO. PEAK WIND 80 MPH. PATH WIDTH 125 YARDS. PATH LENGTH 1.5 MILES. DOZENS OF TREES OR LARGE TREE LIMBS BROKEN. PARTIAL SHINGLE LOSS AND OTHER MINOR DAMAGE TO SEVERAL HOMES. ONE HOME HAD FRONT PORTCH BLOWN OFF.
23:25 UTC	TSTM WND DMG	Hartford	Ohio, KY	TREES DOWN
23:30 UTC	LIGHTNING	Hanson	Hopkins, KY	STRUCTURE FIRE
23:35 UTC	TSTM WND DMG	Owensboro	Daviess, KY	TRAILER ROLLED OVER AND DESTROYED ON KEENLAND PARKWAY
23:40 UTC	TSTM WND DMG	Dundee	Ohio, KY	TREES DOWN NEAR DUNDEE.
23:42 UTC	TORNADO	3 E Owensboro	Daviess, KY	EF-1 TORNADO. PEAK WIND 90 MPH. PATH WIDTH 150 YARDS. PATH LENGTH 3 MILES. ONE MOBILE HOME WAS DESTROYED, WITH AT LEAST 2 DOZEN OTHERS RECEIVING MAINLY MINOR DAMAGE. DOZENS OF TREES OR LARGE LIMBS WERE BROKEN. A CARPORT
23:45 UTC	TORNADO	Owensboro	Daviess, KY	KEENLAND PARKWAY IN OWENSBORO
23:45 UTC	TORNADO	Owensboro	Daviess, KY	KINGSLAND ROAD IN OWENSBORO
23:49 UTC	FLASH FLOOD	Owensboro	Daviess, KY	WEST 9TH AND PARRISH STREET IS FLOODED.
23:50 UTC	TSTM WND DMG	Rosine	Ohio, KY	TREES DOWN NEAR ROSINE
23:52 UTC	TSTM WND DMG	Cloverport	Breckinridge, KY	AREAS OF CLOVERPORT ARE WITHOUT POWER.
23:55 UTC	TSTM WND DMG	Fordsville	Ohio, KY	TREES DOWN
23:55 UTC	FLASH FLOOD	Owensboro	Daviess, KY	4TH AND CEDAR TOTALLY UNDER WATER
23:58 UTC	FLASH FLOOD	Corydon	Henderson, KY	WATER SURROUNDING HOMES ON HIGHWAY 136
00:20 UTC	TSTM WND DMG	2 S Hardinsburg	Breckinridge, KY	TREES DOWN
00:20 UTC	FLOOD	Hartford	Ohio, KY	SOME WATER OVER A FEW ROADWAYS. NO ROADS CLOSED.
00:38 UTC	TSTM WND DMG	Cloverport	Breckinridge, KY	AREAS OF CLOVERPORT ARE WITHOUT POWER.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the track Every 2016 tornado in Kentucky Every tornado in Kentucky since 1950 Warnings in force in Kentucky now The forecast where you are

The other tornadoes of April 27, 2016

29 more were confirmed in the United States that day.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Damage
April 27	1:06 AM CDT	EF1	Franklin, AR	3.2	500		$10,000
April 27	1:12 AM CDT	EF1	Madison, AR	6.2	500		$250,000
April 27	1:18 AM CDT	EF0	Franklin, AR	5.9	700		$100,000
April 27	1:49 AM CDT	EF0	Greene, MO	0.2	40		$100,000
April 27	4:43 AM CDT	EF0	Harris, TX	0.4	40	1	$200,000
April 27	5:58 AM CDT	EF1	Tyler, TX	0.7	50		$10,000
April 27	6:22 AM CDT	EF1	Jasper, TX	2.2	50		$7,000
April 27	2:10 PM CDT	EF0	Saunders, NE	0.2	25
April 27	3:14 PM CDT	EF1	Montgomery, IA	1.7	50
April 27	3:43 PM CDT	EF1	Douglas, NE	0.7	50
April 27	3:52 PM CDT	EF0	Douglas, NE	0.0	25
April 27	3:53 PM CDT	EF0	Douglas, NE	0.2	25
April 27	4:33 PM CDT	EF0	Hopkins, KY	0.3	30
April 27	4:40 PM CDT	EF0	Taylor, IA	2.2	200
April 27	4:44 PM CDT	EF0	Taylor, IA	0.9	40
April 27	4:52 PM CDT	EF0	Daviess, MO	4.3	25
April 27	5:12 PM CDT	EF0	Taylor, IA	0.6	50		$25,000
April 27	5:15 PM CDT	EF0	Webster, KY	1.2	30
April 27	3:24 PM PDT	EF0	Napa, CA	0.2	10
April 27	5:40 PM CDT	EF0	Union, IA	4.0	250		$3,000
April 27	6:23 PM CDT	EF0	Montgomery, IL	4.9	25
April 27	4:31 PM PDT	EF0	Stanislaus, CA	0.1	5		$500
April 27	6:36 PM CDT	EF1	Daviess, KY	2.9	150		$75,000
April 27	6:58 PM CDT	EF0	Effingham, IL	0.1	10
April 27	7:47 PM CDT	EF1	Scotland, MO	0.2	40		$100,000
April 27	7:47 PM CDT	EF0	Richland, IL	0.1	10
April 27	8:23 PM CDT	EF0	Shelby, MO	0.8	75
April 27	8:30 PM CDT	EF0	Scotland, MO	0.2	30		$100,000
April 27	9:00 PM CDT	EF1	Lewis, MO	2.0	150

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.