Severe Thunderstorm Watch in Effect for IA,NE,SD WW 175 SEVERE TSTM IA NE SD 190225Z - 190900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 175
NWS STORM PREDICTION CENTER NORMAN OK
925 PM CDT SAT MAY 18 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN IOWA
EASTERN NEBRASKA
SOUTHEAST SOUTH DAKOTA
* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 925 PM
UNTIL 400 AM CDT.
* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHWEST OF
YANKTON SOUTH DAKOTA TO 10 MILES EAST SOUTHEAST OF FALLS CITY
NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 170...WW 171...WW
172...WW 173...WW 174...
DISCUSSION...E CNTRL/SE NEB SQLN EXPECTED TO CONTINUE MAINLY
NEWD...WITH A CONTINUING THREAT FOR DMGG WIND...MARGINALLY SVR
HAIL... AND POSSIBLY A TORNADO AS MID TROPOSPHERIC SPEED MAX MOVES
NEWD WITH IT. MOIST...LOW-LVL SSELY FLOW AHEAD OF SQLN WILL MAINTAIN
POTENTIAL FOR LOW-LVL MESO CIRCULATIONS AND PERHAPS A BRIEF
TORNADO...BUT GRADUALLY STRENGTHENING CIN SHOULD LIMIT OVERALL
UPDRAFT STRENGTH/LONGEVITY...AND THE POTENTIAL FOR TORNADOES.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 22030.
...CORFIDI
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Watch Initial Counties (WOU) Quick View in Effect for IA,NE,SD WW 175 SEVERE TSTM IA NE SD 190225Z - 190900Z
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 175
NWS STORM PREDICTION CENTER NORMAN OK
925 PM CDT SAT MAY 18 2013
SEVERE THUNDERSTORM WATCH 175 IS IN EFFECT UNTIL 400 AM CDT
FOR THE FOLLOWING LOCATIONS
IAC071-085-119-129-133-137-145-149-155-165-167-193-190900-
/O.NEW.KWNS.SV.A.0175.130519T0225Z-130519T0900Z/
IA
. IOWA COUNTIES INCLUDED ARE
FREMONT HARRISON LYON
MILLS MONONA MONTGOMERY
PAGE PLYMOUTH POTTAWATTAMIE
SHELBY SIOUX WOODBURY
$$
NEC003-021-025-027-037-039-043-051-053-055-097-107-109-119-127-
131-133-139-147-153-155-167-173-177-179-190900-
/O.NEW.KWNS.SV.A.0175.130519T0225Z-130519T0900Z/
NE
. NEBRASKA COUNTIES INCLUDED ARE
ANTELOPE BURT CASS
CEDAR COLFAX CUMING
DAKOTA DIXON DODGE
DOUGLAS JOHNSON KNOX
LANCASTER MADISON NEMAHA
OTOE PAWNEE PIERCE
RICHARDSON SARPY SAUNDERS
STANTON THURSTON WASHINGTON
WAYNE
$$
SDC009-023-027-043-053-067-083-125-127-135-190900-
/O.NEW.KWNS.SV.A.0175.130519T0225Z-130519T0900Z/
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BON HOMME CHARLES MIX CLAY
DOUGLAS GREGORY HUTCHINSON
LINCOLN TURNER UNION
YANKTON
$$
ATTN...WFO...OAX...FSD...
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Tornado Watch in Effect for KS,NE WW 174 TORNADO KS NE 190030Z - 190800Z
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 174
NWS STORM PREDICTION CENTER NORMAN OK
730 PM CDT SAT MAY 18 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
NORTH CENTRAL AND NORTHEAST KANSAS
CENTRAL THROUGH SOUTHEAST NEBRASKA
* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 730 PM
UNTIL 300 AM CDT.
* PRIMARY THREATS INCLUDE...
SEVERAL INTENSE TORNADOES POSSIBLE
NUMEROUS DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS
TO 80 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHEAST OF
AINSWORTH NEBRASKA TO 40 MILES SOUTH SOUTHEAST OF MANHATTAN
KANSAS. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 170...WW 171...WW
172...WW 173...
DISCUSSION...ARC OF STRONG/SVR TSTMS NOW IN S CNTRL NEB THROUGH
CNTRL KS EXPECTED TO MOVE/DEVELOP BOTH NNE THROUGH CNTRL NEB...AND
ENE ACROSS N CNTRL/NE KS THROUGH LATE EVE. AREA VWP AND SFC DATA
TRENDS SUGGEST THAT SOME DEGREE OF UPSCALE DEVELOPMENT INTO BROKEN
LINE SEGMENTS MAY OCCUR...WITH EMBEDDED BOWS/SUPERCELLS/LEWPS POSING
A THREAT FOR DMGG WIND...SVR HAIL...AND POSSIBLY TORNADOES. THE
LATTER POTENTIAL WILL BE FOSTERED BY CONTINUED INFLUX OF RICH
LOW-LVL MOISTURE AS SELY SFC WINDS PERSIST BENEATH A
NOCTURNALLY-STRENGTHENED SSWLY LLJ.
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 22035.
...CORFIDI
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