Alert archive / Ohio / Tornado Watches in 2007
Tornado Watch 196
The Storm Prediction Center issued this tornado watch at Apr 26, 2007, 9:49 PM EDT for Boyd County, Lawrence County, Kentucky; 9 counties in Ohio; 5 counties in West Virginia. It was in force for 72 min.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2007, 9:49 PM EDT (01:49 UTC)
- Expired
- Apr 26, 2007, 11:01 PM EDT
- In force
- 72 min
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
Counties Boyd County, KY, Lawrence County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Cabell County, WV, Jackson County, WV, Mason County, WV, Wayne County, WV, Wood County, WV
The radar
The Charleston,WV radar (KRLX), 96 km from the middle of the area, began a volume at 01:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 9:50 PM EDT | Severe Thunderstorm Warning | RLX | Athens, Morgan, Perry | 55 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.8 hours before the alert went out and 143 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 599 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 829 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 270150
SEL6
SPC WW 270150
KYZ000-OHZ000-WVZ000-270700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 196
NWS STORM PREDICTION CENTER NORMAN OK
950 PM EDT THU APR 26 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME EASTERN KENTUCKY
SOUTHEAST OHIO
WESTERN WEST VIRGINIA
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 950 PM
UNTIL 300 AM EDT.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 25 STATUTE
MILES EITHER SIDE OF A LINE FROM 25 MILES NORTH NORTHWEST OF
PARKERSBURG WEST VIRGINIA TO 25 MILES SOUTHWEST OF HUNTINGTON
WEST VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 191...WW 193...WW
194...WW 195...
DISCUSSION...SMALL CLUSTER OF INTENSE STORMS CONTINUES TO TRACK
NORTHEASTWARD ACROSS EASTERN KY/OH. THESE STORMS HAVE A HISTORY OF
DAMAGING WINDS AND TORNADOES. ACTIVITY WILL LIKELY DIMINISH DURING
THE NEXT FEW HOURS AS DIURNAL COOLING OCCURS. HOWEVER...IN THE
MEANTIME... CONTINUED POTENTIAL FOR DAMAGING WINDS AND ISOLATED
TORNADOES WILL PERSIST ALONG OH RIVER COUNTIES OF OH AND WV.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 24035.
...HARTNearby
Tornado Watches in Ohio, 2007Tornado Watches in West Virginia, 2007Tornado Watches in Kentucky, 2007Every tornado watch in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.