Tornado Watch 233

Issued

May 28, 2013, 2:23 PM CDT (19:23 UTC)

Expired

May 28, 2013, 10:00 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Topeka radar (KTWX), 122 km from the middle of the area, began a volume at 19:23 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

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 837May 28, 1:37 PM CDT
• Mesoscale Discussion 842May 28, 5:52 PM CDT
• Mesoscale Discussion 849May 28, 9:20 PM CDT

106 
WWUS20 KWNS 281927
SEL3  
SPC WW 281927
IAZ000-KSZ000-MOZ000-NEZ000-290300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 233
NWS STORM PREDICTION CENTER NORMAN OK
225 PM CDT TUE MAY 28 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHERN IOWA
  NORTHEAST KANSAS
  NORTHERN MISSOURI
  FAR SOUTHEAST NEBRASKA

* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 225 PM UNTIL
  1000 PM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES POSSIBLE
  SEVERAL VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER LIKELY
  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF
CONCORDIA KANSAS TO 60 MILES EAST OF KIRKSVILLE MISSOURI.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

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.

&&

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY THIS AFTERNOON ALONG SYNOPTIC FRONT EXTENDING FROM LOW
PRESSURE OVER CNTRL KS NEWD ACROSS SRN IA.  OTHER STORMS ONGOING
ALONG AN OUTFLOW BOUNDARY LIFTING NWD THROUGH THE I-70 CORRIDOR OF
MO SHOULD STRENGTHEN AS WELL.  GIVEN THE COMBINATION OF STRONG
INSTABILITY AND 40-50 KT OF DEEP-LAYER SHEAR THE POTENTIAL WILL
EXIST FOR INTENSE SUPERCELLS CAPABLE OF VERY LARGE HAIL AND DAMAGING
WINDS.  GIVEN THE MODEST LOW-LEVEL SHEAR...TORNADO POTENTIAL WILL BE
MODULATED BY MATURE STORMS INTERACTING WITH THE SYNOPTIC FRONT AND
OUTFLOW BOUNDARY WHERE VORTICITY IS ENHANCED.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26025.


...MEAD

Tornado Watches in Missouri, 2013Tornado Watches in Kansas, 2013Tornado Watches in Iowa, 2013Every tornado watch in 2013

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.