April 19th Severe Weather Outbreak in central and southeast Illinois
At least six tornadoes were reported in central and eastern Illinois, along with
multiple reports of downburst winds and damage. 
 
An initial round of convection affected parts of central and southeast Illinois Tuesday
morning (4/19).  This activity formed north of a warm front, as a low level jet stream brought
in unstable air a few thousand feet above ground.  Hail from pea size up to the size of
quarters, and locally heavy rain of 1-2" affected much of the area between 4 and 9 AM.
By mid afternoon a strong warm front shifted north to near the I-72 corridor.  Low clouds and
northeast winds north of the front held temperatures in the 40s, while south of the front sunny
skies and southerly winds pushed temperatures into the 70s with dew points in the 60s.  A high
of 46 in Peoria and 80 in Springfield showed the sharp contrast across this front!  Strong low
level wind shear in the vicinity of this boundary provided a key ingredient for a rotating
supercell to form in east central Missouri around 3 PM.  This storm tracked east periodically
dropping up to baseball sized hail and cyclic tornadoes.  This cell skirted the southwest fringe
of the ILX county warning area with hail and damaging winds affecting far southern Scott, Morgan,
and Sangamon counties.  The southern part of this cell produced an EF3 tornado that caused
significant damage in Girard.  Check out the St. Louis NWS storm summary page for details on this
tornado.  Other storms developed during this time north of the warm front and produced copious
amounts of pea to nickel sized hail northeast along the Illinois River valley.  Heavy rain with
these storms also produced localized flash flooding.
 
As the main supercell tracked into Christian county the circulation broadened and a more linear
thunderstorm structure began to form.  The system quickly grew upscale into a QLCS (quasi-linear
convective system) which produced large hail, widespread damaging straight line winds, and
possible brief tornadic spin ups along the leading edge.  Between 7 and 10 PM this line of storms
tracked through eastern Illinois, downing trees and power lines and causing localized structural
damage in the strongest wind gusts.  Very heavy rain rates also produced more localized flash
flooding.

TORNADOES
THE FOLLOWING IS PRELIMINARY INFORMATION FROM DAMAGE SURVEYS
CONDUCTED BY THE NWS LINCOLN OFFICE IN CHRISTIAN COUNTY...AND
EMERGENCY MANAGERS IN EDGAR AND VERMILION COUNTIES FOR SIX TORNADOES WHICH OCCURRED DURING THE EVENING OF TUESDAY APRIL 19. 
 
...CHRISTIAN COUNTY...

TORNADO #1

A TORNADO DEVELOPED AT 617 PM CDT 4 MILES SOUTHWEST OF KINCAID. THE
TORNADO DESTROYED A GRAIN BIN AND BOUNCED IT THROUGH A FIELD...THE
FRONT YARD OF A HOME AND THEN OUT INTO A FIELD ABOUT ONE QUARTER
MILE AWAY. THE TORNADO CONTINUED EAST AND DESTROYED TWO MORE GRAIN
BINS AND A LARGE FARM STORAGE BUILDING. ONE BIN BENT OVER A TREE AND
WAS BLOWN INTO A GARAGE...PUSHING IT OFF ITS FOUNDATION. THE SECOND
GRAIN BIN WAS BLOWN OVER THE GARAGE AND OUT INTO A FIELD ABOUT ONE
QUARTER MILE AWAY TO THE EAST. THE LARGE FARM STORAGE BUILDING AS A
120 FT BY 48 FT BUILDING AND WAS COMPLETELY DESTROYED. THE DEBRIS
FROM THIS BUILDING WAS THROWN INTO A BRICK HOUSE AND CAVED IN THE
NORTHWEST CORNER OF THE UPPER PART OF THE HOUSE. OTHER DEBRIS FROM
THE LARGE BUILDING WAS LODGED IN BETWEEN THE HOUSE AND THE
GARAGE...BROKE OUT WINDOWS ON THE HOUSE...AND DROVE SEVERAL WOOD
PIECES INTO THE HOUSE AND GARAGE. THE TORNADO CONTINUED
EAST-SOUTHEAST...DEPOSITING GRAIN BIN DEBRIS FOR ANOTHER 1.5 MILES
BEFORE DISSIPATING 2.5 MILES SOUTH-SOUTHWEST OF KINCAID AROUND 620
PM CDT.

BEGINNING: 617 PM CDT...4 MILES SOUTHWEST OF KINCAID
ENDING: 620 PM CDT...2.5 MILES SOUTH-SOUTHWEST OF KINCAID
PATH LENGTH: 2 MILES
MAXIMUM WIDTH: 100 YARDS
ESTIMATED MAX WIND: 100 MPH
EF SCALE RATING: EF1
    

TORNADO #2

A TORNADO DEVELOPED AT 632 PM CDT 2 MILES NORTHEAST OF TAYLORVILLE.
THE TORNADO TRAVELED EAST AND KNOCKED OVER 8 EMPTY RAIL CARS. THE
TORNADO CONTINUED ABOUT ANOTHER HALF MILE TO THE EAST AND DISSIPATED
2.5 MILES NORTHEAST OF TAYLORVILLE AROUND 633 PM CDT.

BEGINNING: 632 PM CDT...2 MILES NORTHEAST OF TAYLORVILLE
ENDING: 633 PM CDT...2.5 MILES NORTHEAST OF TAYLORVILLE
PATH LENGTH: 1 MILE
MAXIMUM WIDTH: 100 YARDS
ESTIMATED MAX WIND: 100 MPH
EF SCALE RATING: EF1 

TORNADO #3

A TORNADO DEVELOPED AT 630 PM CDT 4 MILES SOUTHWEST OF
MORRISONVILLE. THE TORNADO KNOCKED DOWN SEVERAL POWER POLES ALONG
RTE 48 AND TRAVELED EAST OUT IN THE COUNTRY. THE TORNADO CONTINUED
EAST FOR ALMOST 3 MILES AND TORE OFF THE ROOF OF A HOG PEN. PART OF
THE ROOF WAS BLOWN INTO A STORAGE BUILDING...MAKING A HOLE IN THE
SIDE OF THE BUILDING. ANOTHER PART OF THE ROOF WAS BLOWN OVER THE
BUILDING AND DRIVEN INTO THE GROUND NEAR THE HOUSE...TO THE EAST.
THE TORNADO ALSO COLLAPSED IN THE NORTH DOORS OF A LARGE METAL FARM
BUILDING AND TORE OFF A SMALL PART OF THE ROOF NEAR THE DOOR. THE
TORNADO ALSO COLLAPSED A SMALL BARN ACROSS THE STREET AND BLEW
ADDITIONAL DEBRIS FROM THE HOG PEN ROOF ONE HALF MILE TO THE
EAST-SOUTHEAST. THE TORNADO DISSIPATED 3 MILES SOUTH OF
MORRISONVILLE AROUND 632 PM CDT.

BEGINNING: 630 PM CDT...4 MILES SOUTHWEST OF MORRISONVILLE
ENDING: 632 PM CDT...3 MILES SOUTH OF MORRISONVILLE
PATH LENGTH: 3.5 MILE
MAXIMUM WIDTH: 100 YARDS
ESTIMATED MAX WIND: 85 MPH
EF SCALE RATING: EF0 



...EDGAR COUNTY... (Courtesy of Edgar County EMA)
TORNADO #4 
AROUND 757 PM CDT...DOWNBURST WINDS CAUSED DAMAGE TO NUMEROUS
POWER POLES, THE ROOF OF A HOUSE AND A POLE BARN...ABOUT 1.5
MILES WEST OF CHRISMAN.
AT 759 PM CDT...A TORNADO DEVELOPED ABOUT 1.7 MILES NORTHEAST 
OF CHRISMAN. THE TORNADO TORE OFF PART OF A HOUSE ROOF,
DESTROYED TWO POLES BARNS AND DAMAGED A GARAGE. THE TORNADO
TRAVELED TO THE NORTHEAST BEFORE DISSIPATING IN AN OPEN FIELD
ABOUT 2.8 MILES NORTHEAST OF CHRISMAN AT 801 PM CDT. 
BEGINNING: 759 PM CDT... 1.7 MILES NORTHEAST OF CHRISMAN
ENDING: 801 PM CDT...2.8 MILES NORTHEAST OF CHRISMAN
PATH LENGTH: 1.1 MILES
MAXIMUM WIDTH: 100 YARDS
ESTIMATED MAX WIND: 100 MPH
EF SCALE RATING: EF1

...VERMILION COUNTY... (Courtesy of Vermilion County EMA)
TORNADO #5
AROUND 802 PM CDT...A TORNADO DEVELOPED NEAR THE TOWN OF HENNING.
THE TORNADO DID DAMAGE TO SEVERAL ROOFS, AWNINGS AND SIDING ON
HOUSES...AS WELL AS TO TREES AND POWER LINES. THE TORNADO CONTINUED
TO THE NORTHEAST IN OPEN FIELDS...BEFORE DOING DAMAGE TO A GROVE OF
TREES. THE TORNADO DISSIPATED ABOUT 3 MILES NORTHEAST OF HENNING.
BEGINNING: 802 PM CDT...HENNING
ENDING: 805 PM CDT... 3 MILES NORTHEAST OF HENNING
PATH LENGTH: 3 MILES
MAXIMUM WIDTH: 25 YARDS
ESTIMATED MAX WIND: 80 MPH
EF SCALE RATING: EF0
TORNADO #6
THE STORM CONTINUED TO MOVE TO THE NORTHEAST, WITH DOWNBURSTS
DOING WIND DAMAGE TO TREES...AND GRAIN BINS AND A LARGE SHED
ON A FARM ABOUT 4 MILES EAST-SOUTHEAST OF ROSSVILLE BETWEEN
805 PM AND 811 PM.
ANOTHER TORNADO DEVELOPED AROUND 811 PM CDT...ABOUT 4.4 MILES
EAST OF ROSSVILLE. THE TORNADO IMPACTED TWO FARMSTEADS...DOING
DAMAGE TO A TOTAL OF SIX GRAIN BINS, TWO LARGE SHEDS, A GARAGE,
A COMBINE, AND SEVERAL VEHICLES. THE TORNADO DISSIPATED IN AN
OPEN FIELD AROUND 814 PM...ABOUT 5.6 MILES EAST-NORTHEAST OF
ROSSVILLE.
BEGINNING: 811 PM CDT...4.4 MILES EAST OF ROSSVILLE
ENDING: 814 PM CDT...5.6 MILES EAST-NORTHEAST OF ROSSVILLE
PATH LENGTH: 2.5 MILES
MAXIMUM WIDTH: 100 YARDS
ESTIMATED MAX WIND: 100 MPH
EF SCALE RATING: EF1

  
Hundreds of reports of wind damage and large hail were received from 
counties in central and southeastern Illinois the evening of April 19th.
 
Downburst winds of 60 to 80 mph with estimated gusts around 90 mph 
caused damage to roofs
of homes, grain bins, outbuildings, trees and
widespread power outages in nearly every
county between I-55 and
the Indiana border.

Below are some of the preliminary storm reports from this event.
Map of today's severe weather reports

SPC - Storm Reports Page

Experimental Google Maps
Display of Storm Reports

 
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
1039 PM CDT TUE APR 19 2011

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

0502 PM     HAIL             WINCHESTER              39.63N 90.46W
04/19/2011  M0.50 INCH       SCOTT              IL   CO-OP OBSERVER

0524 PM     HAIL             LYNNVILLE               39.69N 90.35W
04/19/2011  M0.88 INCH       MORGAN             IL   LAW ENFORCEMENT

0524 PM     HAIL             5 S JACKSONVILLE        39.66N 90.23W
04/19/2011  M0.88 INCH       MORGAN             IL   EMERGENCY MNGR

0540 PM     HAIL             4 S WAVERLY             39.53N 89.95W
04/19/2011  M0.88 INCH       MORGAN             IL   EMERGENCY MNGR

0547 PM     HAIL             1 E CANTON              40.56N 90.02W
04/19/2011  M0.50 INCH       FULTON             IL   TRAINED SPOTTER

0550 PM     HAIL             1 NW KNOXVILLE          40.92N 90.30W
04/19/2011  M0.50 INCH       KNOX               IL   MESONET

0550 PM     HAIL             NEW BERLIN              39.73N 89.91W
04/19/2011  M0.88 INCH       SANGAMON           IL   EMERGENCY MNGR

0555 PM     HAIL             2 S NEW BERLIN          39.70N 89.91W
04/19/2011  M1.00 INCH       SANGAMON           IL   EMERGENCY MNGR

0555 PM     HAIL             KNOXVILLE               40.91N 90.29W
04/19/2011  M0.50 INCH       KNOX               IL   MESONET

0557 PM     HAIL             SHERMAN                 39.89N 89.61W
04/19/2011  M1.25 INCH       SANGAMON           IL   NWS EMPLOYEE

0600 PM     HAIL             1 N SHERMAN             39.90N 89.61W
04/19/2011  M1.00 INCH       SANGAMON           IL   LAW ENFORCEMENT

0602 PM     TSTM WND DMG     1 N AUBURN              39.59N 89.75W
04/19/2011                   SANGAMON           IL   EMERGENCY MNGR

            FARM BUILDINGS DAMAGED

0605 PM     TSTM WND DMG     CHATHAM                 39.67N 89.70W
04/19/2011                   SANGAMON           IL   EMERGENCY MNGR

            ROOF DAMAGE IN CHATHAM

0610 PM     HAIL             WILLIAMSVILLE           39.95N 89.56W
04/19/2011  M1.00 INCH       SANGAMON           IL   TRAINED SPOTTER

            COCORAHS

0611 PM     TSTM WND DMG     CHATHAM                 39.67N 89.70W
04/19/2011                   SANGAMON           IL   LAW ENFORCEMENT

            WIND BLEW ROOF OFF A HOUSE

0620 PM     TORNADO          KINCAID                 39.59N 89.41W
04/19/2011                   CHRISTIAN          IL   EMERGENCY MNGR

            TORNADO ON GROUND BUILDINGS DAMAGED.

0620 PM     HAIL             CUBA                    40.49N 90.19W
04/19/2011  M1.00 INCH       FULTON             IL   EMERGENCY MNGR

0620 PM     TORNADO          KINCAID                 39.59N 89.41W
04/19/2011                   CHRISTIAN          IL   EMERGENCY MNGR

            TORNADO ON GROUND

0621 PM     TSTM WND DMG     TAYLORVILLE             39.52N 89.26W
04/19/2011                   CHRISTIAN          IL   EMERGENCY MNGR

            WIDE SPREAD POWER OUTAGE IN CITY OF TAYLORVILLE

0625 PM     TSTM WND GST     MORRISONVILLE           39.42N 89.46W
04/19/2011  M60.00 MPH       CHRISTIAN          IL   MESONET

0625 PM     TSTM WND GST     KINCAID                 39.59N 89.41W
04/19/2011  M80.00 MPH       CHRISTIAN          IL   MESONET

0630 PM     TSTM WND DMG     TAYLORVILLE             39.52N 89.26W
04/19/2011                   CHRISTIAN          IL   MESONET

            SIDING RIPPED OFF SOME BUILDINGS ON CHEROKEE STREET

0630 PM     TSTM WND DMG     TAYLORVILLE             39.52N 89.26W
04/19/2011                   CHRISTIAN          IL   MESONET

            TREES BLOWN DOWN ON SPENCER STREET

0630 PM     TSTM WND DMG     1 E PAWNEE              39.59N 89.56W
04/19/2011                   SANGAMON           IL   MESONET

            TREES AND POWER POLES SNAPPED DOWN

0634 PM     HAIL             CANTON                  40.56N 90.04W
04/19/2011  M0.88 INCH       FULTON             IL   MESONET

0640 PM     TSTM WND DMG     TAYLORVILLE             39.52N 89.26W
04/19/2011                   CHRISTIAN          IL   EMERGENCY MNGR

            RAIL CARS BLOW OFF TRACKS

0645 PM     TSTM WND GST     2 S LATHAM              39.94N 89.16W
04/19/2011  E65.00 MPH       LOGAN              IL   EMERGENCY MNGR

0650 PM     HAIL             BRIMFIELD               40.84N 89.88W
04/19/2011  M0.75 INCH       PEORIA             IL   EMERGENCY MNGR

0650 PM     TSTM WND GST     MOUNT ZION              39.78N 88.88W
04/19/2011  E65.00 MPH       MACON              IL   MESONET

0650 PM     HAIL             MOUNT ZION              39.78N 88.88W
04/19/2011  M0.88 INCH       MACON              IL   MESONET

0654 PM     HEAVY RAIN       ST. DAVID               40.49N 90.05W
04/19/2011  M1.75 INCH       FULTON             IL   CO-OP OBSERVER

0657 PM     FLASH FLOOD      TAYLORVILLE             39.52N 89.26W
04/19/2011                   CHRISTIAN          IL   MESONET

            FLASH FLOODING IN DOWNTOWN TAYLORVILLE WITH 1 FOOT OF
            WATER ON SOME STREETS.

0711 PM     TSTM WND GST     MONTICELLO              40.03N 88.57W
04/19/2011  M64.00 MPH       PIATT              IL   MESONET

0714 PM     TSTM WND GST     MONTICELLO              40.03N 88.57W
04/19/2011  M66.00 MPH       PIATT              IL   MESONET

0719 PM     FLASH FLOOD      METAMORA                40.79N 89.36W
04/19/2011                   WOODFORD           IL   TRAINED SPOTTER

            2.5 FEET OF WATER ON ROUTE 116 SEVERAL STALLED VEHICLES

0730 PM     TSTM WND GST     2 W MAHOMET             40.19N 88.44W
04/19/2011  E65.00 MPH       CHAMPAIGN          IL   TRAINED SPOTTER

            60-65 MPH ESTIMATED NEAR CHAMPAIGN AND PIATT COUNTY LINE

0730 PM     HAIL             CHAMPAIGN               40.11N 88.26W
04/19/2011  M1.00 INCH       CHAMPAIGN          IL   TRAINED SPOTTER

0735 PM     HAIL             3 SW PESOTUM            39.88N 88.31W
04/19/2011  M1.00 INCH       CHAMPAIGN          IL   EMERGENCY MNGR

0745 PM     HAIL             OGDEN                   40.12N 87.96W
04/19/2011  M0.50 INCH       CHAMPAIGN          IL   CO-OP OBSERVER

0745 PM     TSTM WND GST     2 WNW HUTTON            39.41N 88.10W
04/19/2011  E65.00 MPH       COLES              IL   MESONET

0745 PM     TSTM WND DMG     1 NW CHARLESTON         39.49N 88.19W
04/19/2011                   COLES              IL   EMERGENCY MNGR

            SHINGLES BLOWN OFF HOME AND 8 INCH TREE BLOWN DOWN

0745 PM     TSTM WND GST     ST. JOSEPH              40.11N 88.04W
04/19/2011  M74.00 MPH       CHAMPAIGN          IL   EMERGENCY MNGR

0800 PM     HAIL             JAMAICA                 39.98N 87.80W
04/19/2011  M1.00 INCH       VERMILION          IL   EMERGENCY MNGR

0802 PM     TORNADO          HENNING                 40.31N 87.70W
04/19/2011                   VERMILION          IL   EMERGENCY MNGR

            POWER FLASHES ON GROUND AND SHERIFF REPORTED DAMAGE IN
            TOWN.

0805 PM     TSTM WND DMG     1 W ROSSVILLE           40.38N 87.69W
04/19/2011                   VERMILION          IL   EMERGENCY MNGR

            TREES DOWN

0815 PM     TSTM WND DMG     HOOPESTON               40.47N 87.67W
04/19/2011                   VERMILION          IL   EMERGENCY MNGR

            POWER POLES BLOWN DOWN REPORTED BY SPOTERS AT THE
            INTERSECTION OF ILLINOIS ROUTE 1 AND ILLINOIS ROUTE 9

0851 PM     HAIL             GREENUP                 39.25N 88.16W
04/19/2011  M0.75 INCH       CUMBERLAND         IL   MESONET

0858 PM     HAIL             1 ENE TOVEY             39.59N 89.44W
04/19/2011  M0.75 INCH       CHRISTIAN          IL   MESONET

0901 PM     FLASH FLOOD      1 N COWDEN              39.26N 88.86W
04/19/2011                   SHELBY             IL   LAW ENFORCEMENT

            ABOUT A FOOT OF WATER OVER ILLINOIS ROUTE 128 BETWEEN 300
            AND 400 NORTH ALSO AT 900 NORTH. MOTORISTS STILL DRIVING
            OVER ROAD BUT GOING REAL SLOW.

0910 PM     HAIL             3 SW MARTINSVILLE       39.31N 87.92W
04/19/2011  E1.00 INCH       CLARK              IL   TRAINED SPOTTER

            SPOTTER REPORTED 5 MINUTES OF QUARTER SIZED HAIL.

0913 PM     HAIL             MARTINSVILLE            39.34N 87.88W
04/19/2011  M0.88 INCH       CLARK              IL   TRAINED SPOTTER

0913 PM     HAIL             NEOGA                   39.32N 88.45W
04/19/2011  M1.00 INCH       CUMBERLAND         IL   FIRE DEPT/RESCUE

0920 PM     FLASH FLOOD      2 S MATTOON             39.45N 88.37W
04/19/2011                   COLES              IL   EMERGENCY MNGR

            ROADS FLOODED IN THE LAKE PARADISE AREA

0923 PM     TSTM WND DMG     FLORA                   38.67N 88.48W
04/19/2011                   CLAY               IL   EMERGENCY MNGR

            TREES DOWN

0923 PM     HAIL             2 N MARSHALL            39.43N 87.69W
04/19/2011  M1.25 INCH       CLARK              IL   MESONET

0923 PM     HAIL             FLORA                   38.67N 88.48W
04/19/2011  M0.88 INCH       CLAY               IL   EMERGENCY MNGR

0934 PM     FLASH FLOOD      1 N MARSHALL            39.41N 87.69W
04/19/2011                   CLARK              IL   EMERGENCY MNGR

            ONE FOOT OF WATER OVER COUNTY ROAD 1800 NORTH

0935 PM     FLASH FLOOD      2 SE CHARLESTON         39.46N 88.15W
04/19/2011                   COLES              IL   EMERGENCY MNGR

            WATER CROSSING ILLINOIS ROUTE 216 AND COUNTY ROAD 2250
            EAST

1010 PM     TSTM WND GST     2 E BIRDS               38.84N 87.63W
04/19/2011  M58.00 MPH       LAWRENCE           IL   CO-OP OBSERVER

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