Severe Thunderstorm Watch 607

Issued

Aug 16, 2007, 4:50 PM EDT (20:50 UTC)

Expired

Aug 16, 2007, 10:23 PM EDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Cincinnati radar (KILN), 66 km from the middle of the area, began a volume at 20:51 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.

Two or more tornadoes

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

40%

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

70%

• Mesoscale Discussion 1775Aug 16, 10:04 PM EDT

000
WWUS20 KWNS 162100
SEL7  
SPC WW 162100
INZ000-KYZ000-OHZ000-WVZ000-170300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 607
NWS STORM PREDICTION CENTER NORMAN OK
450 PM EDT THU AUG 16 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       SOUTHEAST INDIANA
       NORTHERN KENTUCKY
       SOUTHERN OHIO
       WEST CENTRAL WEST VIRGINIA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 450 PM UNTIL
1100 PM EDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST
SOUTHWEST OF CINCINNATI OHIO TO 45 MILES EAST NORTHEAST OF
HUNTINGTON WEST VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 603...WW 605...WW 606...

DISCUSSION...THUNDERSTORMS WILL CONTINUE TO DEVELOP EWD ALONG A
STALLED OUTFLOW BOUNDARY NEAR THE OH RIVER.  MODERATE INSTABILITY
WILL SUPPORT MULTICELL CLUSTERS CAPABLE OF PRODUCING DAMAGING WINDS
AND ISOLATED LARGE HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27020.


...THOMPSON

Severe Thunderstorm Watches in Kentucky, 2007Severe Thunderstorm Watches in Ohio, 2007Severe Thunderstorm Watches in West Virginia, 2007Every severe thunderstorm watch in 2007

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.