Back to the main event page for June 3-4, 2008|
June 3-4, 2008
Event #3 -- Wednesday Morning
The supercell thunderstorms from Tuesday night gradually congealed into a broken area of persistent, training thunderstorms. Flash flooding became an issue overnight, mainly in the Miami and Whitewater Valley regions. One thunderstorm briefly became severe just before 3 AM north of Dayton.
Eventually, another intense squall line developed out of this region of storms over Illinois. It continued east through Indiana, and finally strengthened as it entered Ohio at around 7 AM. The line of storms carved another swath of wind damage across the eastern Cincinnati metro area, and locations east from there. In addition, a brief tornado touched down in Newtown (eastern Hamilton County). There were numerous reports of marginally severe hail as well. Flash flooding also became an issue in the Tri-State region and further east, as heavy rain continued to fall over areas which had already experienced plenty.
Click the image thumbnails to see the images in full-size (960x910).
At 7:48 AM, reflectivity data (left) showed the line of thunderstorms as it lined up roughly across the Interstate 71 corridor. Velocity data (right) indicated a few areas of strong inbound winds (green) associated with the line. The wind shift along the gust front from outbound (red) to inbound is very evident in Greene and Madison Counties.
This frame at 7:44 AM shows the end of the squall line in eastern Hamilton County, just before the Newtown tornado touched down. A "hook" or "notch" is evident in the reflectivity data (left). Storm relative motion data (right) does indicate some weak rotation at the same time, with inbound winds (green) lining up in a couplet with outbound winds (red).
At about 8:05 AM, wind damage occurred near Westboro in southern Clinton County. The damage appeared to be associated with a small break in the squall line, as evident in the reflectivity data (left). Storm relative motion data (right) shows a slight "twist" in the leading edge of the line of storms. This small meso-vortex enhanced the straight line winds in the area, with damage observed near the outward-bowing "wave" in the line. Note that this data does not indicate a strong "gate-to-gate" couplet that one would expect to see as indication of a tornado.
Preliminary Local Storm Report|
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
0627 AM FLOOD 2 NNE OSTRANDER 40.29N 83.20W
06/04/2008 DELAWARE OH PUBLIC
STREAMS WERE COMING OUT OF THEIR BANKS.
0743 AM HAIL 3 SSW BLUE ASH 39.21N 84.40W
06/04/2008 U0.75 INCH HAMILTON OH PUBLIC
0748 AM TORNADO NEWTOWN 39.12N 84.35W
06/04/2008 HAMILTON OH NWS STORM SURVEY
SIGNIFICANT TREE DAMAGE REPORTED IN NEWTOWN...WITH SOME
STRUCTURAL DAMAGE AS WELL TO A NURSERY AND OTHER
BUSINESSES. A BROKEN DAMAGE PATH OF 1.5 MILES EXTENDED
THROUGH THE AREA. THE TORNADO HAS BEEN RATED AN EF0 ON
THE ENHANCED FUJITA SCALE WITH WIND SPEEDS ESTIMATED
BETWEEN 70 AND 75 MPH.
0748 AM TSTM WND DMG 3 S MADEIRA 39.14N 84.37W
06/04/2008 HAMILTON OH TRAINED SPOTTER
NUMEROUS TREE LIMBS DOWNED...UP TO 20-40 FEET IN LENGTH
AND ONE FOOT IN DIAMETER. NUMEROUS SMALL TREES AND POWER
0750 AM HAIL CINCINNATI 39.14N 84.51W
06/04/2008 E0.88 INCH HAMILTON OH PUBLIC
0756 AM HAIL 3 ESE CINCINNATI 39.12N 84.45W
06/04/2008 E0.75 INCH HAMILTON OH NWS EMPLOYEE
0756 AM HAIL 5 WSW FAYETTEVILLE 39.15N 84.01W
06/04/2008 U0.88 INCH CLERMONT OH PUBLIC
0758 AM HAIL 5 SW FAYETTEVILLE 39.14N 84.00W
06/04/2008 E0.88 INCH CLERMONT OH PUBLIC
0801 AM TSTM WND DMG MIDLAND 39.31N 83.91W
06/04/2008 CLINTON OH TRAINED SPOTTER
MANY TREES DOWNED DUE TO HIGH WINDS...WITH SOME FALLING
ON BUILDINGS AND CAUSING STRUCTURAL DAMAGE.
0808 AM TSTM WND DMG WESTBORO 39.28N 83.91W
06/04/2008 CLINTON OH NWS STORM SURVEY
NUMEROUS TREES DOWNED...WITH A FEW HOMES SUSTAINING MINOR
ROOF AND SIDING DAMAGE. STRAIGHT-LINE WINDS WERE SURVEYED
TO BE THE CAUSE...ESTIMATED AT AROUND 60 MPH.
0852 AM TSTM WND DMG CHILLICOTHE 39.34N 82.99W
06/04/2008 ROSS OH LAW ENFORCEMENT
LARGE LIMBS DOWN ACROSS ROADS.
0900 AM FLASH FLOOD BROOKVILLE 39.42N 85.01W
06/04/2008 FRANKLIN IN LAW ENFORCEMENT
AT LEAST 8 ROADS ACROSS THE COUNTY WITH WATER RUNNING
0900 AM FLASH FLOOD MANCHESTER 39.15N 85.01W
06/04/2008 DEARBORN IN LAW ENFORCEMENT
AT LEAST 5 COUNTY ROADS WITH HIGH WATER RUNNING ACROSS
0900 AM FLASH FLOOD CINCINNATI 39.14N 84.51W
06/04/2008 HAMILTON OH LAW ENFORCEMENT
SEVERAL MAJOR INTERCHANGES THROUGH CITY WITH VERY HIGH
0958 AM TSTM WND DMG LOGAN 39.54N 82.40W
06/04/2008 HOCKING OH PUBLIC
TREES WERE BLOWN DOWN.
1000 AM FLASH FLOOD 2 E OXFORD 39.51N 84.71W
06/04/2008 BUTLER OH LAW ENFORCEMENT
NUMEROUS ROADS WITH VERY HIGH WATER. A HANDFUL OF
RESIDENTS EVACUATED NEAR CANAL ROAD IN ST. CLAIR
1000 AM FLASH FLOOD INDEPENDENCE 38.95N 84.55W
06/04/2008 KENTON KY LAW ENFORCEMENT
2 ROADS CLOSED DUE TO HIGH WATER
1050 AM TSTM WND DMG WHEELERSBURG 38.73N 82.85W
06/04/2008 SCIOTO OH EMERGENCY MNGR
TREES WERE BLOWN DOWN.