Tornado Watch 447

Issued

Jul 27, 2014, 1:44 PM EDT (17:44 UTC)

Expired

Jul 27, 2014, 11:00 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Cleveland radar (KCLE), 104 km from the middle of the area, began a volume at 17:47 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1481Jul 27, 12:52 PM EDT
• Mesoscale Discussion 1489Jul 27, 6:09 PM EDT
• Mesoscale Discussion 1492Jul 27, 8:49 PM EDT

840 
WWUS20 KWNS 271744
SEL7  
SPC WW 271744
INZ000-KYZ000-MDZ000-OHZ000-PAZ000-WVZ000-LEZ000-280100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 447
NWS STORM PREDICTION CENTER NORMAN OK
145 PM EDT SUN JUL 27 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EAST CENTRAL INDIANA
  NORTHEAST KENTUCKY
  EXTREME WESTERN MARYLAND
  OHIO
  WESTERN PENNSYLVANIA
  NORTHERN WEST VIRGINIA
  LAKE ERIE

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 145 PM UNTIL
  900 PM EDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
    TO 2 INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTHWEST OF DAYTON
OHIO TO 15 MILES EAST NORTHEAST OF LATROBE PENNSYLVANIA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 445...

DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE TO INTENSIFY
ACROSS MUCH OF OH THIS AFTERNOON AND SPREAD EASTWARD ACROSS THE
WATCH.  STRONG INSTABILITY AND FAVORABLE SHEAR WILL PROMOTE
SUPERCELL STORMS CAPABLE OF LARGE HAIL AND DAMAGING WINDS.  ISOLATED
TORNADOES ARE POSSIBLE IN THE STRONGEST CELLS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 28030.


...HART

Tornado Watches in Ohio, 2014Tornado Watches in West Virginia, 2014Tornado Watches in Pennsylvania, 2014Every tornado watch in 2014

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.