WATCHES: Tornado Watch Number 584

WWUS20 KWNS 072234
SEL4
SPC WW 072234
MNZ000-NDZ000-SDZ000-080600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 584
NWS STORM PREDICTION CENTER NORMAN OK
530 PM CDT SAT AUG 7 2010

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

CENTRAL MINNESOTA
EASTERN NORTH DAKOTA
FAR NORTHEASTERN SOUTH DAKOTA

EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 530 PM
UNTIL 100 AM CDT.

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 75 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST NORTHWEST OF
FARGO NORTH DAKOTA TO 35 MILES NORTH NORTHEAST OF MINNEAPOLIS
MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

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.

DISCUSSION...TSTMS EXPECTED TO FORM IN THE NEXT 1-2 HRS NEAR WNW/ESE
ORIENTED WARM/STNRY FRONT EXTENDING FROM SE ND INTO SE MN...IN
RESPONSE TO CONTINUED SFC HEATING...WAA...AND UPR DIVERGENCE WITH
PASSING UPR IMPULSE. GIVEN DEGREE OF CAPE /AOA 3000 J PER
KG/...MOISTURE-RICH INFLOW...AND DIFFUSE NATURE OF FRONT...POTENTIAL
WILL EXIST FOR DISCRETE SUPERCELLS WITH A RISK FOR VERY LARGE
HAIL...DMGG WINDS...AND TORNADOES. EXPECTED SUSTAINED WAA/ASCENT
SUGGESTS LIKELIHOOD FOR STORMS TO INCREASE IN COVERAGE THROUGH MID
EVE. THIS COULD YIELD AN MCS WITH SIZABLE BOWING SEGMENTS/HIGH
WIND.

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
550. MEAN STORM MOTION VECTOR 29035.

...CORFIDI

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