Tornado Watch 53

Issued

Mar 22, 2011, 2:03 PM CDT (19:03 UTC)

Expired

Mar 22, 2011, 9:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Omaha radar (KOAX), 104 km from the middle of the area, began a volume at 19:04 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

30%

Ten or more severe wind reports

30%

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

40%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 246Mar 22, 1:19 PM CDT
• Mesoscale Discussion 250Mar 22, 5:33 PM CDT
• Mesoscale Discussion 251Mar 22, 8:00 PM CDT

746 
WWUS20 KWNS 221906
SEL3
SPC WW 221906
IAZ000-KSZ000-MOZ000-NEZ000-230200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 53
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT TUE MAR 22 2011

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

       WESTERN AND SOUTHERN IOWA
       EASTERN KANSAS
       WESTERN MISSOURI
       EASTERN NEBRASKA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 205 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 2.5 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 5 MILES EAST NORTHEAST OF
STORM LAKE IOWA TO 20 MILES SOUTH SOUTHWEST OF CHANUTE KANSAS.
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.

DISCUSSION...SEVERE TSTMS ARE EXPECTED TO DEVELOP THROUGH MID/LATE
AFTERNOON ACROSS THE REGION. MODERATE INSTABILITY/STEEP LAPSE RATES
COMBINED WITH VERY STRONG VERTICAL SHEAR WILL SUPPORT SUPERCELLS
CAPABLE OF LARGE HAIL AND TORNADOES. WITH INITIAL DEVELOPMENT ACROSS
EASTERN KS AND SOUTHEAST NEB THIS AFTERNOON...THE SEVERE THREAT
SHOULD DEVELOP EASTWARD INTO WESTERN IA/WESTERN MO BY EARLY EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24045.


...GUYER

Tornado Watches in Iowa, 2011Tornado Watches in Kansas, 2011Tornado Watches in Missouri, 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.