Tornado Watch 313

Issued

Jun 17, 2014, 4:53 PM CDT (21:53 UTC)

Expired

Jun 17, 2014, 10:43 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

Counties Blaine County, NE, Brown County, NE, Cherry County, NE, Grant County, NE, Hooker County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Thomas County, NE, Mellette County, SD, Todd County, SD, Tripp County, SD

The North Platte radar (KLNX), 117 km from the middle of the area, began a volume at 21:53 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

20%

Ten or more severe wind reports

20%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

70%

194 
WWUS20 KWNS 172153
SEL3  
SPC WW 172153
NEZ000-SDZ000-180400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 313
NWS STORM PREDICTION CENTER NORMAN OK
355 PM MDT TUE JUN 17 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  NORTH CENTRAL NEBRASKA
  SOUTH CENTRAL SOUTH DAKOTA

* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
  1000 PM MDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 3
    INCHES IN DIAMETER POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 70 MILES NORTHWEST OF MULLEN
NEBRASKA TO 35 MILES EAST NORTHEAST OF AINSWORTH NEBRASKA.  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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 311...

DISCUSSION...ISOLATED SUPERCELL DEVELOPMENT IS EXPECTED SOON ALONG A
STALLED BOUNDARY NEAR THE SD/NE BORDER W OF VALENTINE.  STEEP LAPSE
RATES AND LARGE CAPE ARE PRESENT IN THE MOIST ELY FLOW ACROSS NRN
NEB...WHERE DEEP-LAYER SHEAR IS SUFFICIENT FOR SUPERCELLS.  EXPECT
SLOW-MOVING SUPERCELLS THIS AFTERNOON/EVENING CAPABLE OF PRODUCING
VERY LARGE HAIL AND A COUPLE TORNADOES.

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 28015.


...THOMPSON

Tornado Watches in Nebraska, 2014Tornado Watches in South Dakota, 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.