Storm Events Database

Storm Events Database

Event Details:

Event Tornado
-- Scale EF1
-- Length 3.09 Miles
-- Width 200 Yards
State INDIANA
County/Area DUBOIS
WFO LMK
Report Source NWS Storm Survey
NCEI Data Source CSV
Begin Date 2011-04-19 22:22 EST-5
Begin Location 2WNW IRELAND
Begin Lat/Lon 38.43/-87.0397
End Date 2011-04-19 22:25 EST-5
End Location 2NNE IRELAND
End Lat/Lon 38.4533/-86.9911
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage
Crop Damage
Episode Narrative Over the space of about four hours from late on April 19 into the early morning hours of April 20, 2011, a squall line brought a historic number of tornadoes to southern Indiana and central Kentucky. Storm surveys over the subsequent few days uncovered 25 tornadoes -the most ever recorded here in one outbreak. On the 19th, low pressure had organized over southeast Kansas with a stationary front reaching east into the central Appalachians. Plentiful moisture streamed northward from the Gulf of Mexico ahead of the system. The Kansas low moved along the front and swung a cold front eastward. Instability, strong upper level winds, and significant changes in wind speed and direction with height helped cause a large squall line to develop ahead of the low and its cold front. The squall line caused severe weather from the eastern Great Lakes to the Red River Valley. Over two dozen tornadoes spun up along the line as it crossed southern Indiana and central Kentucky. Despite the numerous twisters and the fact that they struck during the overnight hours, there were no fatalities or injuries.
Event Narrative An NWS storm survey confirmed an EF-1 tornado with wind speed estimated at 100-105 mph north of Ireland. A well-constructed 75-foot tall grain silo had the top 40 feet sheared off. A 40ft x 50ft outbuilding in the vicinity of the silo was destroyed, its siding thrown 500 yards downwind. In addition to the tornado, straight-line wind damage was observed. Two hog buildings were destroyed and a grain silo was shifted on its foundation.


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Event Map:

Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.
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Measure
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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 0.00K 0.00K
HUNTINGBURG DUBOIS CO. IN 04/19/2011 22:22 EST-5 Tornado EF0 0 0 0.00K 0.00K
IRELAND DUBOIS CO. IN 04/19/2011 22:22 EST-5 Tornado EF1 0 0 0.00K 0.00K
HAYSVILLE DUBOIS CO. IN 04/19/2011 22:25 EST-5 Tornado EF0 0 0 0.00K 0.00K
JASPER DUBOIS CO. IN 04/19/2011 22:25 EST-5 Thunderstorm Wind 58 kts. MG 0 0 0.00K 0.00K
BRETZVILLE DUBOIS CO. IN 04/19/2011 22:26 EST-5 Tornado EF2 0 0 0.00K 0.00K
ST MARKS DUBOIS CO. IN 04/19/2011 22:26 EST-5 Tornado EF1 0 0 0.00K 0.00K
JASPER DUBOIS CO. IN 04/19/2011 22:34 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
JASPER DUBOIS CO. IN 04/19/2011 22:35 EST-5 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
TASWELL CRAWFORD CO. IN 04/19/2011 22:38 EST-5 Thunderstorm Wind 56 kts. MG 0 0 0.00K 0.00K
ROLAND ORANGE CO. IN 04/19/2011 22:39 EST-5 Tornado EF2 0 0 0.00K 0.00K
GREENBRIER ORANGE CO. IN 04/19/2011 22:40 EST-5 Tornado EF1 0 0 0.00K 0.00K
NEWTON STEWART ORANGE CO. IN 04/19/2011 22:40 EST-5 Tornado EF1 0 0 0.00K 0.00K
TROY PERRY CO. IN 04/19/2011 22:43 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
YOUNGS CREEK ORANGE CO. IN 04/19/2011 22:47 EST-5 Tornado EF0 0 0 0.00K 0.00K
CHAMBERSBURG ORANGE CO. IN 04/19/2011 22:49 EST-5 Thunderstorm Wind 78 kts. EG 0 0 0.00K 0.00K
TELL CITY PERRY CO. IN 04/19/2011 22:49 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
ORLEANS ARPT ORANGE CO. IN 04/19/2011 22:50 EST-5 Thunderstorm Wind 55 kts. MG 0 0 0.00K 0.00K
PAOLI ORANGE CO. IN 04/19/2011 22:50 EST-5 Thunderstorm Wind 52 kts. MG 0 0 0.00K 0.00K
ENGLISH CRAWFORD CO. IN 04/19/2011 22:51 EST-5 Thunderstorm Wind 56 kts. MG 0 0 0.00K 0.00K
LEAVENWORTH CRAWFORD CO. IN 04/19/2011 22:59 EST-5 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
LIVONIA WASHINGTON CO. IN 04/19/2011 22:59 EST-5 Tornado EF1 0 0 0.00K 0.00K
LIVONIA WASHINGTON CO. IN 04/19/2011 23:00 EST-5 Tornado EF0 0 0 0.00K 0.00K
ROME PERRY CO. IN 04/19/2011 23:02 EST-5 Thunderstorm Wind 55 kts. MG 0 0 0.00K 0.00K
VALEENE ORANGE CO. IN 04/19/2011 23:03 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
WHITE CLOUD HARRISON CO. IN 04/19/2011 23:04 EST-5 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
SALEM WASHINGTON CO. IN 04/19/2011 23:07 EST-5 Tornado EF0 0 0 0.00K 0.00K
CORYDON HARRISON CO. IN 04/19/2011 23:09 EST-5 Tornado EF0 0 0 0.00K 0.00K
CORYDON HARRISON CO. IN 04/19/2011 23:09 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
LEAVENWORTH CRAWFORD CO. IN 04/19/2011 23:10 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
CORYDON HARRISON CO. IN 04/19/2011 23:14 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
NEW PHILADELPHIA WASHINGTON CO. IN 04/19/2011 23:14 EST-5 Tornado EF0 0 0 0.00K 0.00K
NEW ALBANY FLOYD CO. IN 04/19/2011 23:15 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
NEW PEKIN WASHINGTON CO. IN 04/19/2011 23:15 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
SCOTTSBURG SCOTT CO. IN 04/19/2011 23:17 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
LEOTA SCOTT CO. IN 04/19/2011 23:18 EST-5 Tornado EF0 0 0 0.00K 0.00K
SCOTTSBURG SCOTT CO. IN 04/19/2011 23:19 EST-5 Tornado EF0 0 0 0.00K 0.00K
GALENA FLOYD CO. IN 04/19/2011 23:20 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
SCOTTSBURG SCOTT CO. IN 04/19/2011 23:20 EST-5 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
NEW ALBANY FLOYD CO. IN 04/19/2011 23:23 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
DEPUTY JEFFERSON CO. IN 04/19/2011 23:25 EST-5 Tornado EF0 0 0 0.00K 0.00K
EDWARDSVILLE FLOYD CO. IN 04/19/2011 23:26 EST-5 Thunderstorm Wind 56 kts. MG 0 0 0.00K 0.00K
DEPUTY JEFFERSON CO. IN 04/19/2011 23:28 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
JEFFERSONVILLE ARPT CLARK CO. IN 04/19/2011 23:28 EST-5 Tornado EF1 0 0 0.00K 0.00K
JEFFERSONVILLE ARPT CLARK CO. IN 04/19/2011 23:28 EST-5 Tornado EF0 0 0 0.00K 0.00K
AUSTIN SCOTT CO. IN 04/19/2011 23:29 EST-5 Thunderstorm Wind 54 kts. MG 0 0 0.00K 0.00K
SCOTTSBURG SCOTT CO. IN 04/19/2011 23:29 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
LANCASTER JEFFERSON CO. IN 04/19/2011 23:36 EST-5 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
CHINA JEFFERSON CO. IN 04/19/2011 23:40 EST-5 Tornado EF1 0 0 0.00K 0.00K
BRYANTSBURG JEFFERSON CO. IN 04/19/2011 23:41 EST-5 Tornado EF0 0 0 0.00K 0.00K
Totals: 0 0 0.00K 0.00K