Tornadoes · United States · Missouri · 2009

EF0 tornado, Mc Bride, Missouri, May 8, 2009

Name: EF0 tornado, Mc Bride, Missouri, May 8, 2009
Start: 2009-05-08T16:20:00.000Z
End: 2009-05-08T16:23:00.000Z
Location: Mc Bride, Missouri

This EF0 tornado ran 2.2 miles across Perry County on May 8, 2009, touching down at 11:20 AM CDT and reaching 50 yards wide. It killed nobody, and did $7,000 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: May 8, 2009
Touchdown: 11:20 AM CDT (16:20 UTC)
Lifted: 11:23 AM CDT (16:23 UTC)
On the ground: 3 minutes
Path length: 2.2 miles (3.5 km)
Path width: 50 yards (46 m)
Deaths: 0
Injuries: 0
Property damage: $7,000
County: Perry County
Touchdown point: 37.830, -89.870
Lift-off point: 37.830, -89.830
Record number: 0905081020-01

What the Weather Service recorded

A mature, very intense derecho moved rapidly east along a stationary front across the Mid Mississippi Valley into the Lower Ohio Valley. With a very moist and unstable atmosphere, along with strongly veering winds aloft, embedded tornadic supercells were associated with the derecho. Widespread damaging winds were the primary impact. The bowing portion of the system caused extensive damage from the Poplar Bluff area west. The comma head at the northern end of the bow caused locally catastrophic damage along and north of a Marble Hill to Jackson line. Winds were estimated slightly over 100 mph there.

The tornado was videotaped by a person at the Perryville airport and shown on local media outlets. The path was visible in a wheat field along County Road 934. Dozens of trees were down near the path, apparently due to inflow winds. Eyewitness accounts of the tornado were obtained. Peak winds were estimated near 65 mph.

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.

The county was under a tornado watch, issued at 14:22 UTC and running to 18:49 UTC.

Issued (UTC)	Expired	Product	Office
03:41 UTC	09:44 UTC	Severe Thunderstorm Watch	PAH
06:43 UTC	07:30 UTC	Severe Thunderstorm Warning	PAH
14:22 UTC	18:49 UTC	Tornado Watch	PAH
15:45 UTC	16:30 UTC	Severe Thunderstorm Warning	PAH
16:10 UTC	22:00 UTC	Flash Flood Warning	PAH
17:19 UTC	18:15 UTC	Severe Thunderstorm 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 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 12:10 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 May 8, 7:05 AM CDT, 4 hours 15 minutes earlier.

Area forecast discussion, May 8, 7:05 AM CDT, 4 hours 15 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PADUCAH KY
705 AM CDT FRI MAY 8 2009

.UPDATE...
UPDATED FOR 12Z AVIATION FORECAST DISCUSSION.

&&

.DISCUSSION...
MAIN CONCERNS ARE SEVERE WEATHER AND HEAVY RAINFALL POTENTIAL
TODAY AND TONIGHT.

RUNNING WAY BEHIND SO WILL TRY TO BE BRIEF. AS ONE MCS EXITS THE
SOUTH...ANOTHER IS POISED TO MOVE EAST ACROSS MISSOURI AND INTO
THE WESTERN PARTS OF THE AREA BY MIDDAY. NOT SURE IF THE KANSAS
MCS WILL WEAKEN LATER THIS MORNING AS IT MOVES THROUGH MISSOURI OR
NOT...BUT IT WILL LIKELY RE-INTENSIFY OVER OUR AREA BY
AFTERNOON...ESPECIALLY IF THERE IS SUBSTANTIAL SUNSHINE AHEAD OF
IT.

POTENTIAL EXISTS FOR SIGNIFICANT COVERAGE OF SEVERE WEATHER IN
THE FORM MAINLY OF DAMAGING WINDS...ALTHOUGH LARGE HAIL AND
TORNADOES WILL STILL BE A CONCERN. WIDESPREAD HEAVY RAINS WILL
ALSO BE A PROBLEM...ESPECIALLY AFTER THE RAINS MUCH OF THE AREA
RECEIVED EARLY THIS MORNING. DAY SHIFT WILL HAVE TO MONITOR FOR A
FLOOD WATCH.

EVOLUTION BEYOND TODAYS MCS IS UNCLEAR...BUT THE MODELS ALL HAVE A
STRONG MID/UPPER LEVEL SYSTEM ROTATING EASTWARD THROUGH THE UPPER
MIDWEST TODAY AND INTO THE GREAT LAKES TONIGHT. AS THIS
HAPPENS...THE SURFACE COLD FRONT WILL TAKE SHAPE AND SURGE
THROUGH OUR REGION TONIGHT...ENDING UP SOUTH OF THE AREA BY 12Z
SATURDAY. WILL LIKELY SEE CONTINUED RAINFALL AT LEAST THIS
EVENING...WITH BEST CHANCES IN THE SOUTH. BEST CHANCES SOUTH WILL
BE THE RULE THROUGH THE WEEKEND AS THE FRONT CONTINUES TO PUSH
FARTHER SOUTH TOWARD THE GULF COAST.

THE ECMWF SEEMS TO BE FAVORED FOR POPS LATE SATURDAY NIGHT THROUGH
SUNDAY NIGHT...BUT AM SKEPTICAL OF PRECIPITATION SO FAR NORTH OF
THE SURFACE BOUNDARY. EITHER WAY DRY WEATHER IS STILL FORECAST FOR
MOST OF THE AREA MONDAY AND TUESDAY.

&&

.AVIATION...
MAIN TSRA ACTIVITY NOW OUT OF THE AREA. FOCUS TURNS TO THE MASSIVE
COMPLEX OF STORMS TO OUR WEST. THIS COMPLEX SHOULD ARRIVE AT KCGI
BY LATE MORNING...AND THEN SHIFT EAST WITH TIME DURING THE
AFTERNOON. SOME OF THE STORMS WILL BE INTENSE WITH STRONG WINDS
AND OF COURSE IFR OR LOWER CIGS AND VSBYS. COULD HAVE ISOLD
SHRA/TSRA BEFORE THIS COMPLEX ARRIVES AS WELL. IN ADDITION...LOW
CLOUDS HAVE INVADED THE AREA EARLY THIS MORNING. BEYOND THIS
AFTERNOON...BIGGEST QUESTION IS WHETHER OR NOT ADDITIONAL ACTIVITY
WILL BE ABLE TO FORM ALONG THE COLD FRONT...WHICH IS POISED TO GO
THROUGH THE AREA THIS EVENING.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
MO...NONE.
IL...NONE.
IN...NONE.
&&

Hazardous weather outlook, May 8, 9:44 AM CDT, 1 hour 36 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
944 AM CDT FRI MAY 8 2009

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-091445-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-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-
944 AM CDT FRI MAY 8 2009

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

.DAY ONE...TODAY AND TONIGHT

SIGNIFICANT POTENTIAL FOR SEVERE THUNDERSTORMS EXISTS THROUGHOUT
THE QUAD STATE TODAY. A LARGE COMPLEX OF THUNDERSTORMS WITH THE
POTENTIAL TO PRODUCE DAMAGING WINDS...LARGE HAIL...AND A FEW
TORNADOES...IS EXPECTED TO PUSH EASTWARD INTO WESTERN PORTIONS OF THE
AREA BY 10 AM.

A STATIONARY OUTFLOW BOUNDARY FROM STORMS LAST NIGHT IS LOCATED
FROM NEAR GREENVILLE MISSOURI TO NEAR HICKMAN KENTUCKY. AS THE
THUNDERSTORM COMPLEX INTERACTS WITH THIS
BOUNDARY...INTENSIFICATION IS EXPECTED...WITH AN INCREASED
POTENTIAL FOR TORNADOES.

THE LEADING LINE OF STORMS WILL MOVE EAST SOUTHEAST THROUGH THE
ENTIRE AREA BY 3 PM. HOWEVER...THE POTENTIAL EXISTS FOR STRONG
STRAIGHT-LINE WINDS TO PERSIST FOR AN HOUR OR TWO BEHIND THE LINE
OF STORMS. IN ADDITION...WIDESPREAD HEAVY RAINFALL IS EXPECTED AND
MAY RESULT IN SOME LOCALIZED FLOODING PROBLEMS.

SOME THUNDERSTORMS MAY LINGER ACROSS THE AREA TONIGHT. THESE
STORMS ARE NOT EXPECTED TO BE SEVERE...BUT MAY RESULT IN LOCALLY
HEAVY RAINFALL.

MANY AREA RIVERS WILL CONTINUE TO EXPERIENCE MINOR TO MODERATE
FLOODING. PLEASE REFER TO THE LATEST FLOOD WARNINGS AND STATEMENTS
FOR DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A SMALL CHANCE THUNDERSTORMS IS FORECAST MAINLY IN THE SOUTH
SATURDAY...AND THEN AFTER MIDNIGHT SATURDAY NIGHT THROUGH SUNDAY.
THESE STORMS ARE NOT EXPECTED TO BE SEVERE.

A CHANCE OF THUNDERSTORMS IS ALSO FORECAST FOR TUESDAY NIGHT
THROUGH THURSDAY. AT THIS TIME...SEVERE WEATHER AND LOCALLY HEAVY
RAINFALL CANNOT BE RULED OUT DURING THIS PERIOD.

MANY AREA RIVERS WILL CONTINUE TO EXPERIENCE MINOR TO MODERATE
FLOODING. PLEASE REFER TO THE LATEST FLOOD WARNINGS AND
STATEMENTS FOR DETAILS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED THROUGHOUT THE AREA TODAY.

DRS

In the hours before

Local storm report, May 8, 9:40 AM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
940 AM CDT FRI MAY 08 2009

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

0335 AM     DOWNBURST        CALVERT CITY            37.03N 88.35W
05/08/2009                   MARSHALL           KY   NWS STORM SURVEY

            HUNDREDS OF TREE LIMBS DOWN ALONG WITH NUMEROUS TREES
            DOWN. ROOF PARTIALLY OFF 1 BUSINESS...AND SEVERAL HOMES
            WITH ROOF DAMAGE. NUMEROUS SHEDS AND CARPORTS DESTROYED.

&&

DLL

Local storm report, May 8, 10:31 AM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
1031 AM CDT FRI MAY 08 2009

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

1029 AM     TSTM WND GST     DONIPHAN                36.62N 90.82W
05/08/2009  M79 MPH          RIPLEY             MO   COUNTY OFFICIAL

&&

CW

Local storm report, May 8, 10:51 AM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
1051 AM CDT FRI MAY 08 2009

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

1030 AM     TSTM WND DMG     DONIPHAN                36.62N 90.82W
05/08/2009                   RIPLEY             MO   COUNTY OFFICIAL

            NUMEROUS TREES DOWN IN RIPLEY COUNTY. 2 MAIN BUILDINGS IN
            DOWNTOWN DONIPHAN LOST THEIR ROOFS. TIME ESTIMATED.

&&

CW

Local storm report, May 8, 11:13 AM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
1113 AM CDT FRI MAY 08 2009

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

1025 AM     TSTM WND GST     5 E DONIPHAN            36.62N 90.73W
05/08/2009  E60 MPH          RIPLEY             MO   NWS EMPLOYEE

&&

CW

Local storm report, May 8, 11:18 AM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
1118 AM CDT FRI MAY 08 2009

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

1030 AM     TSTM WND DMG     DONIPHAN                36.62N 90.82W
05/08/2009                   RIPLEY             MO   EMERGENCY MNGR

            A TRAILER HAS A TREE THROUGH IT ON COUNTY HIGHWAY Y.
            NUMEROUS POWER OUTAGES

&&

CW

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.

Lincoln, IL (KILX), 12:00Z

4.3 hours before the tornado, 280 km from the path. May 8, 2009.

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: 185 J/kg
Mixed-layer CIN: -46 J/kg
Surface CAPE: 0 J/kg
Mixed-layer LCL: 627 m above ground
0-6 km bulk shear: 56 kt
0-1 km bulk shear: 7 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.6
0-3 km lapse rate: 3.7 K/km

Open this sounding in Storm Lab

Lincoln, IL (KILX), 00:00Z

7.7 hours after it, 280 km from the path. May 9, 2009.

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: 56 J/kg
Mixed-layer CIN: -3 J/kg
Surface CAPE: 378 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 73 kt
0-1 km bulk shear: 14 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 6.7 K/km

Open this sounding in Storm Lab

The radar

The St Louis radar (KLSX), 121 km away, was scanning. The volume nearest the touchdown began at 16:21 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
15:36 UTC	HAIL 0.7	Bloomsdale	Ste. Genevieve, MO
15:39 UTC	HAIL 1.25	5 W Ste. Genevieve	Ste. Genevieve, MO	REPORTED BY AMATEUR RADIO OPERATOR
16:20 UTC	TORNADO	2 W Mcbride	Perry, MO	PATH VISIBLE IN WHEAT FIELD ALONG COUNTY ROAD 934. DOZENS OF TREES DOWN NEAR THE PATH...APPARENTLY DUE TO INFLOW WINDS. TORNADO CLASSIFIED AS EF0 WITH A PEAK WIND OF 65 MPH. PATH LENGTH WAS 2.2 MILES WITH AN AVERAGE PATH
16:40 UTC	FUNNEL CLOUD	2 W Farmington	St. Francois, MO
16:50 UTC	FUNNEL CLOUD	Farmington	St. Francois, MO
16:50 UTC	TSTM WND GST 87	Fredericktown	Madison, MO	TREES DOWN...POWER OUTAGES ACROSS TOWN
16:55 UTC	TSTM WND DMG	1 E Park Hills	St. Francois, MO	AT INTERSECTION OF HIGHWAY 67 AND ROSENER ROAD ... POWER LINES DOWN.
16:57 UTC	TORNADO	3 W Farmington	St. Francois, MO	TORNADO TOUCHED DOWN ON THE HILLSIDE TO THE WEST OF FARMINGTON ... DISTANCE ESTIMATED.
16:59 UTC	TSTM WND GST 60	4 W Farmington	St. Francois, MO	SEVERAL LARGE TREES DOWN WEST SIDE OF STE FRANCOIS COUNTY MO
17:00 UTC	TSTM WND DMG	2 W Doe Run	St. Francois, MO	TWO POWER POLES SNAPPED ALONG HIGHWAY W.
17:02 UTC	TSTM WND DMG	2 N Farmington	St. Francois, MO	MULTIPLE TREES DOWN ESTIMATED AT 10 INCHES IN DIAMETER AT THE INTERSECTION OF CURRENT ROAD AND OLD HIGHWAY 67
17:04 UTC	TSTM WND DMG	Doe Run	St. Francois, MO	LARGE TREE UPROOTED IN DOE RUN ALONG HIGHWAY W.
17:05 UTC	TSTM WND DMG	Farmington	St. Francois, MO	HALF A ROOF TORN OF A HOUSE AT INTERSECTION OF LIBERTY AND JEFFERSON.
17:07 UTC	TSTM WND GST 60	1 N Park Hills	St. Francois, MO	TRACKOR TRAILER OVERTURNED 1 MILE NORTH OF PARK HILL ON HIGHWAY 67 SOUTHBOUND. HIGHWAY 67 IS BLOCKED SOUTHBOUND
17:10 UTC	TSTM WND DMG	2 N Fredericktown	Madison, MO	VERY HIGH WINDS. ROOF BLOWN OFF OF BUILDING.
17:10 UTC	TSTM WND DMG	Farmington	St. Francois, MO	ROOF TORN OFF OF THE EL TAPATIO RESTAURANT.
17:10 UTC	TSTM WND GST 70	Fredericktown	Madison, MO	NUMEROUS TREES AND POWER LINES DOWN IN AND AROUND THE FREDRICKTOWN AREA. SOME OF THE LARGE TREES FELL ON HOMES.
17:15 UTC	TSTM WND DMG	5 E Fredericktown	Madison, MO	AT THE INTERSECTION OF HIGHWAY 72 AND HIGHWAY F ... SEVERAL HOUSES DAMAGED ALONG WITH TREES DOWN.
17:20 UTC	TSTM WND DMG	3 E Knob Lick	St. Francois, MO	AT THE INTERSECTION OF HIGHWAY OO AND HIGHWAY T ... TREES DOWN CLOSING THE INTERSECTION.
17:30 UTC	TSTM WND DMG	Millheim	Perry, MO	MACHINE SHED DESTROYED
17:35 UTC	TSTM WND DMG	Patton Junction	Bollinger, MO	A LOT OF STRUCTURAL DAMAGE NORTH AND SOUTH ALONG HIGHWAY 72. ALSO...NUMEROUS TREES AND POWER LINES DOWN
17:50 UTC	TSTM WND DMG	Oak Ridge	Cape Girardeau, MO	NUMERUS TREES AND POWER LINES DOWN. EMA DEPUTY DIRECTORS HOME HAS PANELING BLOWN OFF WALL AND WINDOWS ARE BLOWN OUT.
18:00 UTC	HEAVY RAIN 3.55	2 Ne French Village	St. Francois, MO	GRAVEL WASHED OFF DRIVEWAY ALONG WITH DEBRIS ON NUMEROUS COUNTY ROADS DUE TO FLOODING. RAINFALL REPRESENTS THE TOTAL SINCE 10 AM.
18:09 UTC	FLASH FLOOD	Park Hills	St. Francois, MO	WATER RESCUE OCCURRING IN PARK HILLS. TWO HOMES HAD WATER 8 FEET DEEP INTO THE BASEMENT.
18:18 UTC	TSTM WND DMG	2 Se Fredericktown	Madison, MO	LADYS HOUSE WITH 3 OR 4 TREES (2 FT DIAMETER) DOWN AND ALL SHINGLES AND FACIA METAL BLOWN OFF THE ROOF. POWER IS ALSO OUT.
18:49 UTC	FLASH FLOOD	Park Hills	St. Francois, MO	WATER RESCUE OCCURRING ON PRIME ROSE ROAD SOUTHWEST OF PARK HILL MO.
19:14 UTC	FLASH FLOOD	St. Mary	Ste. Genevieve, MO	4 TO 5 FEET OF WATER OVER THE ROAD AT OLD ST. MARY ROAD BY THE RAILROAD CROSSING

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

This ground now

The live radar over the track Every 2009 tornado in Missouri Every tornado in Missouri since 1950 Warnings in force in Missouri now The forecast where you are

The other tornadoes of May 8, 2009

45 more were confirmed in the United States that day.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
May 8	7:53 AM CDT	EF1	Dade, MO	1.9	100			$35,000
May 8	8:05 AM CDT	EF1	Greene, MO	3.9	100			$1.0 million
May 8	8:14 AM CDT	EF1	Greene, MO	1.8	75			$200,000
May 8	8:16 AM CDT	EF1	Polk, MO	8.6	250			$2.0 million
May 8	8:21 AM CDT	EF0	Greene, MO	3.5	100			$100,000
May 8	8:25 AM CDT	EF1	Taney, MO	12.3	880			$2.6 million
May 8	8:38 AM CDT	EF1	Webster, MO	3.8	400			$50,000
May 8	8:39 AM CDT	EF2	Douglas, MO	2.3	1,320			$200,000
May 8	8:39 AM CDT	EF2	Douglas, MO	2.5	880			$20,000
May 8	8:41 AM CDT	EF2	Dallas, MO	4.3	400		2	$2.0 million
May 8	8:48 AM CDT	EF1	Douglas, MO	1.1	200			$50,000
May 8	8:48 AM CDT	EF1	Ozark, MO	1.6	440			$200,000
May 8	9:07 AM CDT	EF1	Wright, MO	3.8	440			$50,000
May 8	9:19 AM CDT	EF0	Texas, MO	6.8	200			$50,000
May 8	9:25 AM CDT	EF2	Laclede, MO	2.0	440			$500,000
May 8	9:28 AM CDT	EF3	Howell, MO	2.2	800			$500,000
May 8	9:35 AM CDT	EF2	Howell, MO	27.9	880		2	$2.5 million
May 8	9:35 AM CDT	EF1	Howell, MO	10.8	880			$500,000
May 8	9:40 AM CDT	EF1	Texas, MO	3.5	440			$25,000
May 8	10:25 AM CDT	EF1	Reynolds, MO	1.8	440
May 8	11:30 AM CDT	EF1	Jackson, IL	3.1	100			$80,000
May 8	11:32 AM CDT	EF0	Jackson, IL	0.4	30
May 8	12:05 PM CDT	EF0	Madison, MO	0.5	50
May 8	12:10 PM CDT	EF1	Madison, MO	0.5	30
May 8	1:12 PM CDT	EF0	Jackson, IL	0.1	40			$10,000
May 8	1:18 PM CDT	EF0	Franklin, IL	0.3	40
May 8	1:40 PM CDT	EF0	Clay, IA	0.3	50
May 8	1:45 PM CDT	EF1	Franklin, IL	5.5	150
May 8	3:04 PM CDT	EF1	Barren, KY	5.8	30			$50,000
May 8	4:55 PM EDT	EF3	Garrard, KY	21.1	150	2	15
May 8	5:02 PM EDT	EF0	McMinn, TN	0.1	20
May 8	4:15 PM CDT	EF1	Fentress, TN	2.6	50			$150,000
May 8	5:18 PM EDT	EF0	Estill, KY	0.3	50			$15,000
May 8	5:58 PM EDT	EF2	Scott, TN	4.5	200			$90,000
May 8	6:40 PM EDT	EF0	Union, TN	0.8	20
May 8	7:15 PM EDT	EF2	Claiborne, TN	2.2	100
May 8	7:36 PM EDT	EF1	Grainger, TN	9.4	100			$15,000
May 8	8:45 PM EDT	EF0	Washington, TN	0.1	20
May 8	9:00 PM EDT	EF0	Dickenson, VA	0.6	100			$5,000
May 8	8:14 PM CDT	EF0	Warren, IL	0.5	25
May 8	9:45 PM EDT	EF2	Wise, VA	1.7	120
May 8	10:25 PM EDT	EF0	Russell, VA	0.1	20
May 8	10:27 PM EDT	EF2	Russell, VA	1.1	250
May 8	11:44 PM EDT	EF2	Alleghany, NC	4.9	200		6	$200,000
May 8	11:46 PM EDT	EF1	Alleghany, NC	0.3	30			$5,000

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.