Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >
Overview
A line of thunderstorms developed in Iowa early in the morning of August 20, 2019, and continued moving southeast through the afternoon hours. The storms brought damaging winds to central Indiana during the early to mid-afternoon time frame. Trees and power lines were downed across the area. The Indianapolis International Airport reported a 73 mph wind gust with the storms. Nearly 40,000 people were without power due to the storms.Radar
Radar Loop of Event
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| Velocity Image at 2:42 PM, showing strong winds impacting the west side of Marion County. A 73 MPH wind gust was reported at the Indianapolis Int'l Airport at 2:43 PM EDT. |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
822 PM EDT TUE AUG 20 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1228 PM HAIL TERRE HAUTE 39.47N 87.38W
08/20/2019 E0.50 INCH VIGO IN AMATEUR RADIO
LOCATED AT 8TH AVENUE AND LAFAYETTE.
0115 PM TSTM WND DMG WEST LEBANON 40.27N 87.38W
08/20/2019 WARREN IN PUBLIC
MULTIPLE TREES REPORTED DOWN NEAR WEST
LEBANON.
0116 PM TSTM WND DMG 5 S ATTICA 40.22N 87.25W
08/20/2019 FOUNTAIN IN PUBLIC
TREE DOWN ON AUTOMOBILE. TIME ESTIMATED FROM
RADAR.
0118 PM TSTM WND DMG 4 NNW COVINGTON 40.20N 87.41W
08/20/2019 WARREN IN LAW ENFORCEMENT
A TREE WAS REPORTED DOWN ALONG STATE ROUTE
263 NEAR COUNTY ROAD 500 WEST. TIME IS
APPROXIMATE BASED ON RADAR.
0135 PM TSTM WND DMG VEEDERSBURG 40.11N 87.26W
08/20/2019 FOUNTAIN IN PUBLIC
MULTIPLE LARGE TREE LIMBS DOWNED. TIME
ESTIMATED FROM RADAR.
0136 PM TSTM WND DMG TERRE HAUTE 39.47N 87.38W
08/20/2019 VIGO IN AMATEUR RADIO
UTILITY LINE DOWN.
0142 PM TSTM WND DMG 4 SW WAYNETOWN 40.05N 87.12W
08/20/2019 FOUNTAIN IN BROADCAST MEDIA
LARGE TREE LIMBS SNAPPED.
0148 PM TSTM WND GST COAL CITY 39.23N 87.05W
08/20/2019 E60 MPH OWEN IN PUBLIC
DIME SIZED HAIL WAS ALSO NOTED.
0150 PM TSTM WND DMG 1 SSW PURDUE UNIVERSITY 40.42N 86.92W
08/20/2019 TIPPECANOE IN NWS EMPLOYEE
TREE SNAPPED AND DOWN.
0150 PM TSTM WND DMG VEEDERSBURG 40.11N 87.26W
08/20/2019 FOUNTAIN IN PUBLIC
UTILITY LINES DOWN.
0151 PM TSTM WND DMG 4 SW WAYNETOWN 40.05N 87.12W
08/20/2019 FOUNTAIN IN BROADCAST MEDIA
LARGE LIMBS REPORTED DOWN.
0201 PM TSTM WND DMG 2 NW GREENCASTLE 39.66N 86.86W
08/20/2019 PUTNAM IN EMERGENCY MNGR
EMERGENCY MANAGER REPORTS TREES AND TREE
LIMBS DOWN ACROSS THE COUNTY WITH SOME ON
CARS.
0201 PM TSTM WND DMG 1 WNW NEW MARKET 39.96N 86.95W
08/20/2019 MONTGOMERY IN EMERGENCY MNGR
LARGE LIMB OF TREE SNAPPED OFF ALONG INDIANA
47S. TIME ESTIMATED FROM RADAR.
0205 PM TSTM WND DMG 1 SE LAFAYETTE 40.40N 86.86W
08/20/2019 TIPPECANOE IN BROADCAST MEDIA
SMALL AND MEDIUM SIZE TREE LIMBS DOWN JUST
WEST OF TEAL AND 52.
0205 PM TSTM WND GST 1 SE LAFAYETTE 40.40N 86.86W
08/20/2019 E60 MPH TIPPECANOE IN BROADCAST MEDIA
LOCATED JUST WEST OF TEAL AND 52. SMALL AND
MEDIUM SIZE LIMBS DOWN.
0206 PM TSTM WND DMG LAFAYETTE 40.41N 86.87W
08/20/2019 TIPPECANOE IN BROADCAST MEDIA
TREE LIMBS DOWN ON THIRD STREET.
0210 PM TSTM WND DMG NEW MARKET 39.95N 86.92W
08/20/2019 MONTGOMERY IN PUBLIC
DOORS BLOWN OFF ONE OR MORE BUILDINGS.
0213 PM TSTM WND DMG NEWTOWN 40.20N 87.15W
08/20/2019 FOUNTAIN IN BROADCAST MEDIA
TREE LIMBS DOWN.
0216 PM TSTM WND DMG WORTHINGTON 39.12N 86.97W
08/20/2019 GREENE IN PUBLIC
MULTIPLE 5 TO 7 INCH TREE LIMBS DOWNED.
0221 PM TSTM WND DMG 1 S LAFAYETTE 40.40N 86.87W
08/20/2019 TIPPECANOE IN BROADCAST MEDIA
UTILITY LINES DOWN ACROSS ROAD AT ELSTON
ROAD AND OLD US 231.
0227 PM TSTM WND DMG KINGMAN 39.97N 87.28W
08/20/2019 FOUNTAIN IN PUBLIC
SEVERAL TREES DOWN.
0235 PM TSTM WND DMG DANVILLE 39.76N 86.53W
08/20/2019 HENDRICKS IN AMATEUR RADIO
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM
DANVILLE. SEVERAL LARGE TREES DOWN ACROSS
DANVILLE.
0240 PM TSTM WND GST NEWBERRY 38.93N 87.02W
08/20/2019 E60 MPH GREENE IN TRAINED SPOTTER
.
0241 PM TSTM WND DMG 1 E DANVILLE 39.77N 86.50W
08/20/2019 HENDRICKS IN PUBLIC
REPORT FROM MPING: TREES UPROOTED OR
SNAPPED; ROOF BLOWN OFF.
0241 PM TSTM WND DMG 4 W PLAINFIELD 39.68N 86.45W
08/20/2019 HENDRICKS IN PUBLIC
REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN;
SHINGLES BLOWN OFF.
0242 PM TSTM WND DMG 2 ENE AVON 39.78N 86.34W
08/20/2019 HENDRICKS IN PUBLIC
TREE DOWN ACROSS 100N.
0243 PM TSTM WND GST INDIANAPOLIS INT`L AIRP 39.72N 86.29W
08/20/2019 M73 MPH MARION IN ASOS
.
0243 PM TSTM WND DMG 3 SSE INDIANAPOLIS INT` 39.69N 86.28W
08/20/2019 MARION IN PUBLIC
*** 1 INJ ***
LARGE TREE SNAPPED AND FELL ON CAR DRIVING
ALONG ROAD. DRIVER SUFFERED MINOR INJURIES.
0245 PM TSTM WND DMG 2 ENE INDIANAPOLIS INT` 39.74N 86.25W
08/20/2019 MARION IN AMATEUR RADIO
LARGE TREE SNAPPED OFF 15 FEET ABOVE GROUND.
0252 PM TSTM WND GST 2 S WYNNEDALE 39.81N 86.19W
08/20/2019 M70 MPH MARION IN PUBLIC
.
0252 PM TSTM WND GST 2 SW BARGERSVILLE 39.50N 86.20W
08/20/2019 E65 MPH JOHNSON IN TRAINED SPOTTER
.
0255 PM TSTM WND GST 9 N NASHVILLE 39.33N 86.24W
08/20/2019 M60 MPH BROWN IN AMATEUR RADIO
0258 PM TSTM WND DMG 2 SW MOSCOW 39.47N 85.59W
08/20/2019 RUSH IN PUBLIC
8 INCH DIAMETER TREE DOWN ACROSS ROAD.
0302 PM TSTM WND DMG 3 NNW SHOALS 38.70N 86.81W
08/20/2019 MARTIN IN LAW ENFORCEMENT
TREE DOWN ACROSS HIGHWAY 450 NEAR BRETT
ROAD.
0305 PM TSTM WND DMG 6 SE BEECH GROVE 39.66N 85.99W
08/20/2019 MARION IN TRAINED SPOTTER
GAZEBO RIPPED OUT OF THE GROUND AND THROWN
AGAINST A HOUSE.
0307 PM TSTM WND DMG 4 ENE WHITELAND 39.57N 86.01W
08/20/2019 JOHNSON IN PUBLIC
LARGE TREE LIMBS DOWN WITH SEVERAL SMALL
TREES SNAPPED AT THE LOCATION. TIME
ESTIMATED FROM RADAR.
0307 PM TSTM WND DMG 4 E WHITELAND 39.55N 86.01W
08/20/2019 JOHNSON IN PUBLIC
SEVERAL LARGE TREE LIMBS DOWNED WITH A
COUPLE SMALL TREES SNAPPED AT THE LOCATION.
TIME ESTIMATED FROM RADAR.
0307 PM TSTM WND DMG 2 E SAINT PAUL 39.42N 85.59W
08/20/2019 DECATUR IN EMERGENCY MNGR
REPORT OF TREES DOWN IN NW DECATUR COUNTY.
0330 PM TSTM WND DMG MITCHELL 38.74N 86.47W
08/20/2019 LAWRENCE IN PUBLIC
2 POWER POLES SNAPPED ALONG ROAD. TIME
ESTIMATED FROM RADAR.
0333 PM TSTM WND DMG 1 WNW PENDLETON 40.01N 85.77W
08/20/2019 MADISON IN EMERGENCY MNGR
TREES AND POWER LINES DOWN ON 525W AND
SR132.
0337 PM TSTM WND DMG WALDRON 39.45N 85.67W
08/20/2019 SHELBY IN LAW ENFORCEMENT
TREES AND POWER LINES WERE REPORTED DOWN
NEAR WALDRON. THE APPROXIMATE TIME OF THIS
EVENT WAS BASED ON RADAR.
0346 PM TSTM WND DMG 3 E SAINT PAUL 39.43N 85.58W
08/20/2019 DECATUR IN EMERGENCY MNGR
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 3
E SAINT PAUL. REPORTS OF TREES DOWN FROM ST.
PAUL TO GREENSBURG. 150+ CURRENTLY WITHOUT
POWER DUE TO STORMS.
Environment
Thunderstorms developed thanks to an upper level wave. The upper wave interacted with the unstable atmosphere to produce the severe thunderstorms.
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| Figure 1: Mixed Layer CAPE at 2:00 PM EDT | Figure 2: Downdraft CAPE at 2:00 PM EDT | Figure 3: Differential Vortcity Advection at 2:00 PM |
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