Tornado Watch 164

Issued

May 11, 2015, 1:14 PM EDT (17:14 UTC)

Expired

May 11, 2015, 8:00 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

65 kt

The Northern Indiana radar (KIWX), 91 km from the middle of the area, began a volume at 17:13 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

90%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 606May 11, 12:48 PM EDT
• Mesoscale Discussion 611May 11, 2:58 PM EDT
• Mesoscale Discussion 615May 11, 4:03 PM EDT
• Mesoscale Discussion 618May 11, 4:39 PM EDT
• Mesoscale Discussion 619May 11, 6:23 PM EDT

591 
WWUS20 KWNS 111712
SEL4  
SPC WW 111712
INZ000-KYZ000-MIZ000-OHZ000-LEZ000-LHZ000-120000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 164
NWS STORM PREDICTION CENTER NORMAN OK
110 PM EDT MON MAY 11 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  CENTRAL AND EASTERN INDIANA
  NORTHERN KENTUCKY
  SOUTHEASTERN MICHIGAN
  WESTERN ANDN NORTHERN OHIO
  LAKE ERIE
  LAKE HURON

* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 110 PM UNTIL
  800 PM EDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
    TO 75 MPH POSSIBLE
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY...THUNDERSTORMS...INCLUDING POSSIBLE SUPERCELLS AND STORMS
WITH BOWING STRUCTURES...EXPECTED TO MOVE/DEVELOP FAIRLY RAPIDLY 
NORTHEAST ACROSS WATCH AREA THROUGH EARLY EVENING...WITH A RISK FOR
DAMAGING WIND...A COUPLE TORNADOES...AND SEVERE HAIL.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTH NORTHWEST OF
INDIANAPOLIS INDIANA TO 55 MILES SOUTHEAST OF MOUNT CLEMENS
MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

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.

&&

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 22045.


...CORFIDI

Tornado Watches in Indiana, 2015Tornado Watches in Ohio, 2015Tornado Watches in Michigan, 2015Every tornado watch in 2015

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.