Tornado Watch 218

Issued

May 1, 2012, 3:01 PM EDT (19:01 UTC)

Expired

May 1, 2012, 10:00 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Indianapolis radar (KIND), 104 km from the middle of the area, began a volume at 19:01 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

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 645May 1, 2:44 PM EDT
• Mesoscale Discussion 647May 1, 4:39 PM EDT
• Mesoscale Discussion 651May 1, 6:55 PM EDT
• Mesoscale Discussion 655May 1, 9:33 PM EDT

890 
WWUS20 KWNS 011903
SEL8
SPC WW 011903
INZ000-KYZ000-OHZ000-020200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 218
NWS STORM PREDICTION CENTER NORMAN OK
305 PM EDT TUE MAY 1 2012

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

       CENTRAL AND SOUTHERN INDIANA
       FAR NORTHERN KENTUCKY
       SOUTHWEST OHIO

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1000 PM EDT.

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

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 5 MILES NORTHWEST OF
BLOOMINGTON INDIANA TO 60 MILES SOUTH OF COLUMBUS OHIO.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).

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 217...

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY THIS AFTERNOON ALONG AND S OF WARM FRONT LIFTING NWD
THROUGH THE OH VALLEY.  THE PRESENCE OF A 30-40 KT LLJ /PER REGIONAL
VWP DATA/ IS ENHANCING THE NWD FLUX OF A MOIST/UNSTABLE BOUNDARY
LAYER...AND ENLARGING LOW-LEVEL HODOGRAPHS.  AS SUCH...ENVIRONMENT
IS EXPECTED TO BECOME INCREASINGLY SUPPORTIVE OF SUPERCELLS WITH A
RISK FOR LARGE HAIL...DAMAGING WINDS...AND PERHAPS A FEW TORNADOES.

AVIATION...TORNADOES AND 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
450. MEAN STORM MOTION VECTOR 27030.


...MEAD

Tornado Watches in Indiana, 2012Tornado Watches in Ohio, 2012Tornado Watches in Kentucky, 2012Every tornado watch in 2012

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.