Overview
A nearly stationary front from west central Illinois across southeast Illinois resulted in isolated weak tornadoes. The first tornado developed near Raymond, IL in Montgomery County (NWS St. Louis county warning area). Two additional weak (EF-0) tornadoes developed near the same front, 3 miles south-southwest of Altamont, IL (Effingham County) just before 7:00 pm CDT and 2 miles north of Olney (Richland County) shortly after 7:45 pm CDT. No damage was reported with any of the tornadoes.
The early evening thunderstorms also produced wind damage in Effingham County, along with torrential rainfall in south central and southeast Illinois. Additional severe thunderstorms developed during the late evening, resulting in hail and heavy rain in parts of central and eastern Illinois between 11:00 pm and 1:30 am CDT.
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| SPC Severe Weather Outlook: 4/27/16 | Preliminary Storrm Reports: 4/27/16 | Central & Southeast IL Storm Reports: 4/27/16 Click here for an interactive map |
Tornadoes:
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Tornado - 3.2 SSW of ALTAMONT
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Tornado - 1.7 N of Olney
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The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
| EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
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Radar:
Effingham County Storms: Altamont Tornado & Montrose Wind Damage
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| Evansvile, IN Radar Reflectivity (Precipitation) at the time of the Altamont tornado 6:58 pm CDT 4/27/16 |
Evansville, IN Radar - Storm Relative Velocity at the time of the Altamont tornado 6:58 pm CDT 4/27/16 |
Evansville, IN Radar Reflectivity (Precipitation) at the time of the wind damage in Montrose 8:33 pm CDT 4/27/16 |
Olney Tornado
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| Evansville, IN Radar Reflectivity (Precipitation) near the time of the Olney tornado: 7:47 pm CDT 4/27/16 |
Evansville, IN Radar - Storm Relative Velocity near the time of the Olney Tornado: 7:47 pm CDT 4/27/16 |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE LINCOLN IL 137 AM CDT THU APR 28 2016 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0658 PM TORNADO 2 SW ALTAMONT 39.04N 88.77W 04/27/2016 EFFINGHAM IL LAW ENFORCEMENT BRIEF TORNADO TOUCHDOWN REPORTED BY LOCAL LAW ENFORCEMENT OFFICER 0659 PM FUNNEL CLOUD 3 S ALTAMONT 39.01N 88.75W 04/27/2016 EFFINGHAM IL TRAINED SPOTTER FUNNEL CLOUD AND WALL CLOUD VIEWED BY SPOTTER 0704 PM TSTM WND DMG ALTAMONT 39.06N 88.75W 04/27/2016 EFFINGHAM IL LAW ENFORCEMENT POWER POLE BLOWN DOWN OVER ROADWAY AND SEMI TRUCK BLOWN OVER ON I-70 0735 PM HAIL 3 SW EFFINGHAM 39.09N 88.59W 04/27/2016 E0.75 INCH EFFINGHAM IL FIRE DEPT/RESCUE 0747 PM TORNADO 2 N OLNEY 38.76N 88.09W 04/27/2016 RICHLAND IL LAW ENFORCEMENT BRIEF TORNADO TOUCHDOWN SEEN BY LAW ENFORCEMENT OFFICER 0833 PM TSTM WND DMG MONTROSE 39.17N 88.38W 04/27/2016 EFFINGHAM IL TRAINED SPOTTER AWNING OVER GAS PUMPS AT A GAS STATION BLOWN OVER AND HIT A CAR 1108 PM HAIL 3 E SMITHFIELD 40.47N 90.24W 04/27/2016 E1.00 INCH FULTON IL EMERGENCY MNGR DIME TO QUARTER SIZED HAIL 1115 PM HAIL PAWNEE 39.59N 89.58W 04/27/2016 M1.00 INCH SANGAMON IL EMERGENCY MNGR FROM PAWNEE ESDA 1117 PM HAIL DIVERNON 39.57N 89.65W 04/27/2016 M0.88 INCH SANGAMON IL AMATEUR RADIO 1140 PM HAIL CANTON 40.56N 90.04W 04/27/2016 M1.00 INCH FULTON IL EMERGENCY MNGR 1235 AM TSTM WND GST NEW HOLLAND 40.18N 89.58W 04/28/2016 M58.00 MPH LOGAN IL EMERGENCY MNGR 0130 AM HAIL TUSCOLA 39.80N 88.28W 04/28/2016 M0.75 INCH DOUGLAS IL TRAINED SPOTTER
Rain Reports
PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE LINCOLN IL 856 AM CDT THU APR 28 2016 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0700 AM HEAVY RAIN 4 W EFFINGHAM 39.12N 88.62W 04/28/2016 M3.25 INCH EFFINGHAM IL CO-OP OBSERVER CO-OP OBSERVER STATION EFFINGHAM 3SW /EFHI2/ 0700 AM HEAVY RAIN 2 WNW EFFINGHAM 39.13N 88.59W 04/28/2016 M2.81 INCH EFFINGHAM IL COCORAHS COCORAHS STATION 2 WNW EFFINGHAM /IL-EF-6/ 0800 AM HEAVY RAIN 2 WSW SIGEL 39.22N 88.54W 04/28/2016 M1.49 INCH SHELBY IL COCORAHS COCORAHS STATION 2 WSW SIGEL /IL-EF-13/ 0700 AM HEAVY RAIN 2 SSE URBANA 40.09N 88.20W 04/28/2016 M1.35 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION 1 SSE URBANA /IL-CP-105/ 0730 AM HEAVY RAIN 1 WSW ARTHUR 39.71N 88.49W 04/28/2016 M1.31 INCH MOULTRIE IL CO-OP OBSERVER CO-OP OBSERVER STATION ARTHUR /ARTI2/ 0700 AM HEAVY RAIN 1 WSW TUSCOLA 39.79N 88.29W 04/28/2016 M1.30 INCH DOUGLAS IL CO-OP OBSERVER CO-OP OBSERVER STATION TUSCOLA /TUSI2/ 0700 AM HEAVY RAIN 1 WSW TUSCOLA 39.79N 88.29W 04/28/2016 M1.30 INCH DOUGLAS IL COCORAHS COCORAHS STATION TUSCOLA /IL-DG-4/ 0700 AM HEAVY RAIN 4 ESE URBANA 40.09N 88.13W 04/28/2016 M1.25 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION 4 E URBANA /IL-CP-95/ 0700 AM HEAVY RAIN 2 ENE PHILO 40.01N 88.12W 04/28/2016 M1.25 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION 1 ENE PHILO /IL-CP-29/ 0600 AM HEAVY RAIN OGDEN 40.11N 87.96W 04/28/2016 M1.24 INCH CHAMPAIGN IL CO-OP OBSERVER CO-OP OBSERVER STATION OGDEN /OGDI2/ 0700 AM HEAVY RAIN URBANA 40.11N 88.20W 04/28/2016 M1.22 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION URBANA 0.1 SSE /IL-CP-12/ 0730 AM HEAVY RAIN 1 ESE CASEY 39.30N 87.97W 04/28/2016 M1.16 INCH CLARK IL CO-OP OBSERVER CO-OP OBSERVER STATION CASEY /CASI2/ 0800 AM HEAVY RAIN 1 WNW PEORIA 40.75N 89.62W 04/28/2016 M1.15 INCH PEORIA IL CO-OP OBSERVER CO-OP OBSERVER STATION PEORIA 5NW /PRWI2/ 0700 AM HEAVY RAIN 3 SE URBANA 40.08N 88.16W 04/28/2016 M1.14 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION 3 SE URBANA /IL-CP-35/ 0800 AM HEAVY RAIN 1 SSW SAINT JOSEPH 40.10N 88.05W 04/28/2016 M1.11 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION SAINT JOSEPH /IL-CP-31/ 0600 AM HEAVY RAIN 1 NE SHELBYVILLE 39.41N 88.80W 04/28/2016 M1.11 INCH SHELBY IL COCORAHS COCORAHS STATION SHELBYVILLE /IL-SH-1/ 0654 AM HEAVY RAIN 1 SSW BELLEVUE 40.67N 89.68W 04/28/2016 M1.10 INCH PEORIA IL ASOS ASOS STATION PEORIA INTL AP /PIA/ 0700 AM HEAVY RAIN 3 E MOCCASIN 39.13N 88.69W 04/28/2016 M1.05 INCH EFFINGHAM IL COCORAHS COCORAHS STATION ALTAMONT 5.8 NNE /IL-EF-24/ 0700 AM HEAVY RAIN 2 S RUSHVILLE 40.08N 90.56W 04/28/2016 M1.05 INCH SCHUYLER IL COCORAHS COCORAHS STATION RUSHVILLE 2.4 S /IL-SY-1/ 0700 AM HEAVY RAIN 2 NNE HOMER 40.06N 87.95W 04/28/2016 M1.03 INCH CHAMPAIGN IL COCORAHS COCORAHS STATION HOMER 2.1 NNE /IL-CP-72/ 0700 AM HEAVY RAIN 1 NE ATWOOD 39.81N 88.46W 04/28/2016 M1.00 INCH PIATT IL COCORAHS COCORAHS STATION ATWOOD /IL-PT-11/ 0700 AM HEAVY RAIN 1 S MURDOCK 39.78N 88.09W 04/28/2016 M1.00 INCH DOUGLAS IL COCORAHS COCORAHS STATION 1 S MURDOCK /IL-DG-12/
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