Tornado Watch 413

Issued

Jun 1, 2011, 2:37 PM EDT (18:37 UTC)

Expired

Jun 1, 2011, 8:00 PM EDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

Counties Aroostook County, ME, Franklin County, ME, Kennebec County, ME, Knox County, ME, Lincoln County, ME, Penobscot County, ME, Piscataquis County, ME, Somerset County, ME, Waldo County, ME

The Caribou radar (KCBW), 122 km from the middle of the area, began a volume at 18:39 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

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1050Jun 1, 2:19 PM EDT
• Mesoscale Discussion 1053Jun 1, 4:17 PM EDT
• Mesoscale Discussion 1058Jun 1, 7:09 PM EDT

276 
WWUS20 KWNS 011836
SEL3
SPC WW 011836
MEZ000-020000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 413
NWS STORM PREDICTION CENTER NORMAN OK
240 PM EDT WED JUN 1 2011

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

       MAINE

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
800 PM EDT.

TORNADOES...HAIL TO 2 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 EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF CARIBOU
MAINE TO 55 MILES WEST SOUTHWEST OF BANGOR MAINE.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU3).

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 410...WW 411...WW 412...

DISCUSSION...THUNDERSTORMS WILL CONTINUE TO INCREASE OVER WESTERN ME
AND NH...AND TRACK EASTWARD ACROSS THE WATCH AREA.  VERY STRONG
WINDS ALOFT AND MODERATE INSTABILITY WILL PROMOTE SUPERCELL STORM
STRUCTURES.  INCREASING LOW LEVEL WINDS THROUGH THE AFTERNOON
SUGGEST A RISK OF A FEW TORNADOES...ALONG WITH LARGE HAIL AND
DAMAGING WINDS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26040.


...HART

Tornado Watches in Maine, 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.