Overview
A strong fall cyclone crossing the upper midwest combined with an unseasonable surge of moisture into the Ohio valley set the stage for a fall tornado outbreak. Numerous tornadoes were observed across the deep south, Tennessee valley and Ohio valley. Several killer tornadoes were observed including 2 in the Ohio valley. The strongest tornado recorded on this day was the Van Wert F4.
Due to the magnitude of this event, a service assessment team was formed to examine the warning and forecast services provided to emergency managers (EMs), government agencies, and the public. Service assessments provide a valuable contribution to ongoing efforts to improve the quality and timeliness of our products and services. Findings and recommendations from this assessment will help improve techniques, products, services, and the information provided to the American public.
Tornadoes: Ohio valley tornado tracks
Tornado - Hardford City, Indiana
Track Map
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Tornado - Near Petroleum, Indiana
Track Map
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Tornado - Berne, Indiana
Track Map
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Tornado - Van Wert, Ohio
Track Map
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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 |
Photos & Video
Hartford City Indiana
Marsh supermarket heavily damaged | Hotel and car damaged | Mobile home damaged |
Berne Indiana
Ominous view from Pleasant Mills (Patrick Morton) |
Barn destroyed | House damaged (Berne Tri-Weekly News) |
Twisted debris (Berne Tri-Weekly News) |
Van Wert Ohio
Tornado bearing down on Van Wert (Ben Waltz) |
Van Wert industrial park devastated (Aaron Collins) |
Suction vortices scour marks (Casey Nuttle) |
Iconic image of the Van Wert Cinema (Paul Van Dyke) |
Homes obliterated (Paul Van Dyke) |
Unimaginable damage (Paul Van Dyke) |
Home foundation swept clean (Paul Van Dyke) |
Mangled car impaled on a tree (Paul Van Dyke) |
Roselms Ohio
DOT garage destroyed (Jan Dunlop) |
Farmstead heavily damaged, barn destroyed (Jan Dunlop) |
Home swept away (Jan Dunlop) |
Home destroyed (Jan Dunlop) |
Radar
0.5 degree vel/ref feature following loop of the track of this tornadic supercell from 210 - 400 pm EST. | 0.5 degree vel/ref showing very strong rotation in this supercell approaching Van Wert Ohio | 0.5 degree vel/ref showing a very strong mesocyclone southwest of Van Wert Ohio | 0.5 degree vel/ref showing a very strong mesocyclone moving through Van Wert Ohio |
3D velocity. Pink colors denote a very strong tornado cyclone associated with this low topped supercell moving over Van Wert Ohio | 3D reflectivity. Yellow/red colors indicate a shallow, low centroid updraft in this low topped supercell moving over Van Wert Ohio | 3D storm relative velocity. White trajectory line denotes strong storm inflow within the green to aqua colors. Yellow trajectory line denotes strong flow within the updraft. Orange colors within what looks like a tube represent the intense tornado cyclone present in this tornadic supercell storm moving into Van Wert Ohio. |
Storm Reports
PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE NORTHERN INDIANA 1129 PM EST SUN NOV 10 2002 TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS... ....COUNTY LOCATION.... 0230 PM HARTFORD CITY IN TORNADO 11/10/02 BLACKFORD DAMAGE TO MARSH GROCERY STORE. TREE DAMAGE. REPORTED BY LAW ENFORCEMENT OFFICIAL. 0300 PM 1 N DECATUR IN WIND DAMAGE 11/10/02 ADAMS NUMEROUS TREES DOWN. REPORTED BY STORM SPOTTER. 0305 PM 5 NE BERNE IN TORNADO 11/10/02 ADAMS HOUSES AND TRAILER DESTROYED. REPORTED BY EMERGENCY MANAGEMENT. 0305 PM 6 NE BERNE IN TORNADO 11/10/02 ADAMS BARNS DESTROYED. REPORTED BY EMERGENCY MANAGEMENT. 0305 PM 2 NE BERNE IN TORNADO 11/10/02 ADAMS HOUSE DAMAGED. REPORTED BY LAW ENFORCEMENT OFFICIAL. 0317 PM 2 S UPLAND IN .88 INCH HAIL 11/10/02 GRANT REPORTED BY STORM SPOTTER. 0330 PM VAN WERT OH TORNADO 11/10/02 VAN WERT NUMEROUS STRUCTURES DOWN. REPORTED BY EMERGENCY MANAGEMENT. 0340 PM 5 NE VAN WERT OH TORNADO 11/10/02 VAN WERT DAMAGED STRUCTURES. REPORTED BY HAM RADIO OPERATOR. 0345 PM WETSEL OH TORNADO 11/10/02 VAN WERT DAMAGED STRUCTURES. REPORTED BY HAM RADIO OPERATOR. 0353 PM GROVER HILL OH TORNADO 11/10/02 PAULDING NUMEROUS STRUCTURES DOWN. REPORTED BY LAW ENFORCEMENT OFFICIAL. 0355 PM 2 SE GROVER HILL OH TORNADO 11/10/02 PAULDING *** 5 INJ *** HOUSE BLOWN DOWN. REPORTED BY EMERGENCY MANAGEMENT. 0355 PM ROSELMS OH TORNADO 11/10/02 PAULDING CHURCH LEVELED. MULTIPLE STRUCTURES DAMAGED. REPORTED BY EMERGENCY MANAGEMENT. 0400 PM 2 WNW CONTINENTAL OH TORNADO 11/10/02 PUTNAM HOMES DAMAGED. REPORTED BY HAM RADIO OPERATOR. 0400 PM AYERSVILLE OH TORNADO 11/10/02 DEFIANCE BARN AND SILO BLOWN DOWN. TREES DOWN. CAMPER BLOWN OVER. REPORTED BY DISPATCH. 0400 PM 3 W CONTINENTAL OH TORNADO 11/10/02 PUTNAM *** 2 DEAD, 1 INJ *** TRAILER DESTROYED. REPORTED BY EMERGENCY MANAGEMENT. 0420 PM HOLGATE OH WIND DAMAGE 11/10/02 HENRY TREES AND POWER LINES BLOWN DOWN COUNTYWIDE. REPORTED BY DISPATCH. 0434 PM CAIRO OH WIND DAMAGE 11/10/02 ALLEN TREES AND POWER LINES DOWN. REPORTED BY SHERIFF. 0440 PM LIMA OH WIND DAMAGE 11/10/02 ALLEN TREES AND POWER LINES BLOWN DOWN COUNTYWIDE. REPORTED BY SHERIFF. &&
Environment
Strong zonal flow aloft undergoes significant amplification ahead of a potent disturbance ejecting out of the central plains. Deep sfc low pressure across southern Wisconsin the morning of November 10th, lifted northeast into southeast Ontario by evening as a strong cold front swept eastward across the Ohio valley. Strong southerly flow at low levels allowed for a surge of moisture, characterized by dewpoints in the 60s, to spread into the lower Great Lakes by afternoon. As a powerful mid to upper level jet, accentuated by 100kt 500 millibar flow, ejected out into a rapidly destabilizing warm sector during the afternoon, explosive thunderstorm development occurred.
Figure 1: 12Z analysis of 850mb height, wind, temp, dewpoint | Figure 2: 12Z analysis of 700mb height, wind, temp, dewpoint | Figure 3: 12Z analysis of 500mb height, wind, temp | Figure 4: 12Z analysis of 300mb wind, temp |
Ensuing rapid destabilization in the afternoon ahead of enlarging low level hodographs in response to intense mid level jet ejecting out across the warm sector through the Ohio valley set the stage for a regional tornado outbreak. 18Z special sounding from Wilmington Ohio shows the development of a volatile airmass by early afternoon, primed for tornadic supercells.
Figure 5: 18Z ILN special sounding | Figure 6: 18Z ILN derived thermodynamic parameters | Figure 7: 18Z ILN derived kinematic parameters | Figure 8: 18Z Composite Chart |
Surface fronts and observation progression on November 10 2002
Figure 9: 12Z sfc map | Figure 10: 15Z sfc map | Figure 11: 18Z sfc map | Figure 12: 21Z sfc map | Figure 13: 00Z sfc map |
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