Tornado Watch 142

Issued

May 11, 2014, 2:21 PM CDT (19:21 UTC)

Expired

May 11, 2014, 10:00 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Grand Island radar (KUEX), 67 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

80%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 561May 11, 10:47 AM CDT
• Mesoscale Discussion 562May 11, 12:49 PM CDT
• Mesoscale Discussion 564May 11, 1:46 PM CDT
• Mesoscale Discussion 566May 11, 4:46 PM CDT
• Mesoscale Discussion 568May 11, 5:31 PM CDT
• Mesoscale Discussion 570May 11, 6:23 PM CDT
• Mesoscale Discussion 571May 11, 7:04 PM CDT
• Mesoscale Discussion 573May 11, 8:30 PM CDT
• Mesoscale Discussion 575May 11, 9:31 PM CDT

445 
WWUS20 KWNS 111922
SEL2  
SPC WW 111922
IAZ000-KSZ000-MOZ000-NEZ000-120300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 142
NWS STORM PREDICTION CENTER NORMAN OK
220 PM CDT SUN MAY 11 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHWEST IOWA
  NORTH-CENTRAL AND NORTHEAST KANSAS
  FAR NORTHWEST MISSOURI
  SOUTH-CENTRAL AND EASTERN NEBRASKA

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 220 PM UNTIL
  1000 PM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES
    POSSIBLE
  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
    TO 2.5 INCHES IN DIAMETER POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF
KEARNEY NEBRASKA TO 35 MILES NORTHEAST OF SHENANDOAH IOWA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).

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 141...

DISCUSSION...EXPLOSIVE TSTM DEVELOPMENT IS ANTICIPATED FROM JUST
NORTHEAST OF A SURFACE LOW OVER NORTH-CENTRAL KANSAS NORTHEAST ALONG
A WARM FRONT MOVING NORTH THROUGH EASTERN NEBRASKA AND WESTERN IA.
GIVEN THE COMBINATION OF MODERATE TO STRONG INSTABILITY AND STRONG
LOW-LEVEL AND DEEP-LAYER SHEAR...THE ENVIRONMENT WILL BE QUITE
FAVORABLE FOR LONG-LIVED SUPERCELLS CAPABLE OF VERY LARGE HAIL AND
TORNADOES...A COUPLE OF WHICH COULD BE INTENSE.

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
500. MEAN STORM MOTION VECTOR 24030.


...MEAD

Tornado Watches in Nebraska, 2014Tornado Watches in Iowa, 2014Tornado Watches in Kansas, 2014Every tornado watch in 2014

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.