Tornado Watch 395

Issued

May 29, 2011, 1:29 PM EDT (17:29 UTC)

Expired

May 29, 2011, 8:00 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Grand Rapids radar (KGRR), 85 km from the middle of the area, began a volume at 17:30 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

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

95%

One or more gusts of 65 knots or more

70%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1013May 29, 9:39 AM EDT
• Mesoscale Discussion 1014May 29, 12:59 PM EDT
• Mesoscale Discussion 1017May 29, 4:17 PM EDT
• Mesoscale Discussion 1020May 29, 6:51 PM EDT

742 
WWUS20 KWNS 291731
SEL5
SPC WW 291731
INZ000-MIZ000-OHZ000-LEZ000-LHZ000-LMZ000-300000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 395
NWS STORM PREDICTION CENTER NORMAN OK
130 PM EDT SUN MAY 29 2011

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

       NORTHERN INDIANA
       SOUTHERN LOWER MICHIGAN
       NORTHWEST OHIO
       LAKE ERIE
       LAKE HURON
       LAKE MICHIGAN

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 800
PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 10 MILES NORTH NORTHWEST OF
VALPARAISO INDIANA TO 25 MILES EAST SOUTHEAST OF MOUNT CLEMENS
MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 394...

DISCUSSION...A FAST-MOVING BOW ECHO COMPLEX OVER NORTHERN IL WILL
TRACK RAPIDLY EASTWARD AT 45-50 KNOTS ACROSS THE WATCH AREA TODAY.
A WIDESPREAD DAMAGING WIND EVENT /DERECHO/ IS POSSIBLE.  RAPID
DESTABILIZATION HAS OCCURRED AHEAD OF THE BOW AS THE WARM FROM
RETREATS... SUGGESTING BOW MAY MAINTAIN INTENSITY FOR SEVERAL MORE
HOURS.  STRENGTHENING LOW LEVEL WINDS AND PROXIMITY OF WARM FRONT...
COUPLED WITH HIGH LEVEL OF MESOSCALE ORGANIZATION OF BOW SUPPORTS  A
THREAT OF QLCS TORNADOES ALONG THE BOW...AS WELL AS ISOLATED
SUPERCELLS AHEAD OF THE BOW.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25045.


...HART

Tornado Watches in Michigan, 2011Tornado Watches in Indiana, 2011Tornado Watches in Ohio, 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.