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NOAA 200yrs

June 29, 2012

Derecho Sweeps Across
Midwest to Mid-Atlantic

Widespread Damage from
Findlay to Mount Vernon

map of local storm reports - click for larger version

radar summary - click to enlarge

What is a Derecho?

A derecho (pronounced similar to "deh-REY-cho" in English), is a widespread, long-lived wind storm that is associated with a band of rapidly moving showers or thunderstorms. Although a derecho can produce destruction similar to that of tornadoes, the damage typically is directed in one direction along a relatively straight swath. As a result, the term "straight-line wind damage" sometimes is used to describe derecho damage. By definition, if the wind damage swath extends more than 240 miles (about 400 kilometers) and includes wind gusts of at least 58 mph (93 km/h) or greater along most of its length, then the event may be classified as a derecho.

The NWS Storm Prediction Center has an entire web page devoted to Derechos.

See: About Derechos

climatology of Derechos: Ohio averages 1 a year

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CLEVELAND OH
949 PM EDT FRI JUN 29 2012

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

0410 PM     TSTM WND DMG     MCCOMB                  41.11N 83.79W
06/29/2012                   HANCOCK            OH   TRAINED SPOTTER

            8-10 INCH TREE DOWN.


0415 PM     TSTM WND DMG     JENERA                  40.90N 83.73W
06/29/2012                   HANCOCK            OH   PUBLIC

            TREES DOWN.


0415 PM     TSTM WND DMG     FINDLAY                 41.04N 83.64W
06/29/2012                   HANCOCK            OH   TRAINED SPOTTER

            NUMEROUS TREES DOWN.


0415 PM     TSTM WND DMG     FINDLAY                 41.04N 83.64W
06/29/2012                   HANCOCK            OH   EMERGENCY MNGR

            STURCTURES DAMAGED IN FINDLAY WITH ROOFS BLOWN OFF.


0415 PM     TSTM WND GST     FINDLAY                 41.04N 83.64W
06/29/2012  U70.00 MPH       HANCOCK            OH   BROADCAST MEDIA

            PENNY HAIL.


0415 PM     TSTM WND DMG     7 S FINDLAY             40.94N 83.64W
06/29/2012                   HANCOCK            OH   TRAINED SPOTTER

            TREES DOWN. BARN BLOWN OVER.


0420 PM     TSTM WND DMG     FINDLAY                 41.04N 83.64W
06/29/2012                   HANCOCK            OH   BROADCAST MEDIA

            4 OR 5 SEMI TRUCKS BLOWN OVER ON I-75 BETWEEN FINDLAY AND
            BLUFFTON. TREES DOWN.


0425 PM     TSTM WND GST     FINDLAY                 41.04N 83.64W
06/29/2012  M84.00 MPH       HANCOCK            OH   TRAINED SPOTTER


0425 PM     TSTM WND DMG     2 SW KIRBY              40.79N 83.45W
06/29/2012                   WYANDOT            OH   TRAINED SPOTTER

            DAMAGE OCCURRED ACROSS MUCH OF JACKSON TOWNSHIP IN
            SOUTHWEST WYANDOT COUNTY. THE ROOF WAS BLOWN OFF OF A
            COUPLE OF BARNS. ROOF SHINGLES AND SHEET METAL WAS BLOWN
            OFF SEVERAL BARNS AND HOUSES. NUMEROUS TREES WERE DOWNED.
            POWER LINES AND UTILITY POLES WERE DOWNED AS WERE SOME
            FENCES AND SIGNS.

0435 PM     TSTM WND DMG     6 WNW MARION            40.62N 83.23W
06/29/2012                   MARION             OH   TRAINED SPOTTER
            SEVERAL TREES AND LIMBS DOWN.

0437 PM     TSTM WND DMG     VANLUE                  40.98N 83.48W
06/29/2012                   HANCOCK            OH   TRAINED SPOTTER
            TREES DOWN.

0440 PM     TSTM WND DMG     4 N MARION              40.64N 83.13W
06/29/2012                   MARION             OH   TRAINED SPOTTER
            SEMI TRUCK ROLLED OVER.

0442 PM     TSTM WND DMG     2 SW MARION             40.56N 83.15W
06/29/2012                   MARION             OH   TRAINED SPOTTER
            TREES DOWNED. SHEET METAL STRIPPED OFF BARNS AND BARN
            ROOF.

0444 PM     TSTM WND DMG     3 SW NEW RIEGEL         41.02N 83.36W
06/29/2012                   SENECA             OH   TRAINED SPOTTER
            NUMEROUS TREES DOWN, NO POWER.

0445 PM     HAIL             3 ESE MARION            40.57N 83.08W
06/29/2012  E1.00 INCH       MARION             OH   TRAINED SPOTTER

0447 PM     HAIL             1 E MARION              40.58N 83.11W
06/29/2012  E1.75 INCH       MARION             OH   TRAINED SPOTTER

0449 PM     HAIL             6 NE MARION             40.65N 83.05W
06/29/2012  E0.88 INCH       MARION             OH   TRAINED SPOTTER

0454 PM     TSTM WND GST     MARION                  40.58N 83.13W
06/29/2012  M62.00 MPH       MARION             OH   DEPT OF HIGHWAYS
            ODOT GARAGE SENSOR.

0456 PM     TSTM WND GST     MOUNT GILEAD            40.55N 82.84W
06/29/2012  E70.00 MPH       MORROW             OH   TRAINED SPOTTER

0500 PM     TSTM WND GST     3 WNW MOUNT GILEAD      40.57N 82.89W
06/29/2012  E80.00 MPH       MORROW             OH   TRAINED SPOTTER
            70-80 MPH ESTIMATED GUST IN EDISON.

0502 PM     TSTM WND DMG     GALION                  40.73N 82.79W
06/29/2012                   CRAWFORD           OH   EMERGENCY MNGR
            WALL OF ATTACHED GARAGE BLOWN OUT/DAMAGED.

0502 PM     TSTM WND DMG     4 SSE MOUNT GILEAD      40.50N 82.81W
06/29/2012                   MORROW             OH   TRAINED SPOTTER
            UTILITY POLES DOWN.

0505 PM     TSTM WND DMG     8 NE MOUNT GILEAD       40.63N 82.73W
06/29/2012                   MORROW             OH   TRAINED SPOTTER
            SIDING OFF OF TWO HOMES.

0510 PM     TSTM WND GST     3 WNW LEXINGTON         40.69N 82.64W
06/29/2012  E60.00 MPH       MORROW             OH   TRAINED SPOTTER
            AT MID OHIO RACE TRACK.

0510 PM     HAIL             3 WNW LEXINGTON         40.69N 82.64W
06/29/2012  E1.75 INCH       MORROW             OH   TRAINED SPOTTER
            GOLF BALL HAIL AT MID OHIO RACE TRACK.

0517 PM     TSTM WND GST     LEXINGTON               40.68N 82.59W
06/29/2012  E65.00 MPH       RICHLAND           OH   TRAINED SPOTTER

0518 PM     TSTM WND GST     LEXINGTON               40.68N 82.59W
06/29/2012  E60.00 MPH       RICHLAND           OH   TRAINED SPOTTER
            LARGE BRANCHES DOWN.

0520 PM     TSTM WND DMG     MOUNT VERNON            40.39N 82.48W
06/29/2012                   KNOX               OH   TRAINED SPOTTER
            TREES DOWN ON MAIN STREET AND A UTILITY POLE DOWN.

0520 PM     TSTM WND DMG     1 E BUTLER              40.59N 82.40W
06/29/2012                   RICHLAND           OH   TRAINED SPOTTER
            10-12 INCH DIAMETER TREE LIMBS DOWN.

0523 PM     TSTM WND DMG     BELLVILLE               40.62N 82.51W
06/29/2012                   RICHLAND           OH   TRAINED SPOTTER
            TREES DOWN.

0547 PM     TSTM WND DMG     7 S MILLERSBURG         40.45N 81.92W
06/29/2012                   HOLMES             OH   TRAINED SPOTTER
            SEVERAL TREES AND LIMBS DOWN IN CLARK.

0547 PM     TSTM WND DMG     1 W LOUDONVILLE         40.63N 82.25W
06/29/2012                   ASHLAND            OH   TRAINED SPOTTER
            MULTIPLE TREES DOWN IN MOHICAN STATE PARK.
$$

For information across central Ohio, visit NWS Wilmington's event page.

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