Tornado Watch 475

Issued

Jun 6, 2008, 2:18 PM EDT (18:18 UTC)

Expired

Jun 7, 2008, 12:00 AM EDT

In force

10 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Grand Rapids radar (KGRR), 19 km from the middle of the area, began a volume at 18:22 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

40%

One or more gusts of 65 knots or more

40%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1251Jun 6, 1:30 PM EDT
• Mesoscale Discussion 1256Jun 6, 4:27 PM EDT
• Mesoscale Discussion 1257Jun 6, 7:15 PM EDT
• Mesoscale Discussion 1258Jun 6, 9:47 PM EDT

000
WWUS20 KWNS 061823
SEL5  
SPC WW 061823
INZ000-MIZ000-OHZ000-LEZ000-LHZ000-LMZ000-070200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 475
NWS STORM PREDICTION CENTER NORMAN OK
220 PM EDT FRI JUN 6 2008

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

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

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 220 PM UNTIL
1000 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES WEST OF FORT WAYNE
INDIANA TO 25 MILES NORTH OF ALPENA 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 472...WW 473...WW 474...

DISCUSSION...DISCRETE STORMS DEVELOPING OVER LAKE MICHIGAN ARE
EXPECTED TO SPREAD INTO WESTERN LOWER MICHIGAN LATE THIS
AFTERNOON...WITH ADDITIONAL STORMS DEVELOPING NEAR THE LAKE BREEZE
ACROSS WESTERN MICHIGAN...SOUTHWARD INTO NORTHERN INDIANA. 
CONSOLIDATION INTO ORGANIZED FAST MOVING LINES SEGMENTS APPEARS
LIKELY IN STRONG AND HIGHLY SHEARED SOUTHWESTERLY FLOW.  THIS MAY BE
ACCOMPANIED BY STRONG DAMAGING WIND GUSTS...WITH A COUPLE OF
TORNADOES ALSO POSSIBLE THROUGH EARLY EVENING.

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 22045.


...KERR/HART

Tornado Watches in Michigan, 2008Tornado Watches in Indiana, 2008Tornado Watches in Ohio, 2008Every tornado watch in 2008

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.