Tornado Watch 880

Issued

Nov 14, 2011, 3:29 PM EST (20:29 UTC)

Expired

Nov 14, 2011, 9:26 PM EST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

60 kt

The Cleveland radar (KCLE), 30 km from the middle of the area, began a volume at 20:29 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

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 2313Nov 14, 12:24 PM EST
• Mesoscale Discussion 2315Nov 14, 2:57 PM EST
• Mesoscale Discussion 2316Nov 14, 4:38 PM EST
• Mesoscale Discussion 2318Nov 14, 6:32 PM EST
• Mesoscale Discussion 2319Nov 14, 8:41 PM EST

738 
WWUS20 KWNS 142027
SEL0
SPC WW 142027
OHZ000-PAZ000-LEZ000-150400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 880
NWS STORM PREDICTION CENTER NORMAN OK
330 PM EST MON NOV 14 2011

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

       NORTHERN AND CENTRAL OHIO
       NORTHWEST PENNSYLVANIA
       LAKE ERIE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1100 PM EST.

TORNADOES...HAIL TO 0.5 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 55 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES SOUTHWEST OF
FINDLAY OHIO TO 15 MILES EAST NORTHEAST OF FRANKLIN PENNSYLVANIA.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 879...

DISCUSSION...LEAD SURFACE LOW NEAR TOL WILL CONTINUE TO DEVELOP
ENEWD ALONG WARM FRONT LIFTING NWD TOWARD THE SHORE OF LAKE ERIE.
WAA AND ISALLOBARIC FORCING IN ADVANCE OF THIS LOW WILL ALIGN WITH A
MARGINALLY UNSTABLE AIR MASS TO SUPPORT THE EWD MOVEMENT/DEVELOPMENT
OF TSTMS ACROSS THE WATCH AREA.  GIVEN THE VERY STRONG WIND FIELD IN
PLACE...THE POTENTIAL WILL EXIST FOR EMBEDDED SUPERCELL AND BOWING
STRUCTURES CAPABLE OF A FEW TORNADOES AND DAMAGING WINDS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 26050.


...MEAD

Tornado Watches in Ohio, 2011Tornado Watches in Pennsylvania, 2011Every tornado watch in 2011

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.