Tornado Watch 340

Issued

Jul 6, 2016, 3:21 PM CDT (20:21 UTC)

Expired

Jul 6, 2016, 10:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

3.5 in

Strongest gust expected

70 kt

The Rapid City radar (KUDX), 60 km from the middle of the area, began a volume at 20:21 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

60%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

80%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

70%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1171Jul 6, 2:51 PM CDT
• Mesoscale Discussion 1175Jul 6, 6:48 PM CDT

085 
WWUS20 KWNS 062020
SEL0  
SPC WW 062020
NEZ000-SDZ000-WYZ000-CWZ000-070300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 340
NWS STORM PREDICTION CENTER NORMAN OK
315 PM CDT WED JUL 6 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  NORTHERN NEBRASKA
  WESTERN SOUTH DAKOTA
  FAR NORTHEAST WYOMING

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 315 PM
  UNTIL 1000 PM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE
  WIDESPREAD LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 3.5
    INCHES IN DIAMETER LIKELY
  WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
    TO 80 MPH POSSIBLE

SUMMARY...INTENSE THUNDERSTORMS...INCLUDING A FEW LONGER-LIVED
SUPERCELLS AND SUPERCELL CLUSTERS...EXPECTED TO FORM/INCREASE OVER
WATCH AREA THROUGH THIS EVENING. STORMS WILL BE CAPABLE OF VERY
LARGE HAIL...DAMAGING WIND...AND A FEW TORNADOES.  SOME STORMS MAY
EVOLVE INTO LARGER ESE-MOVING  CLUSTERS AND LINES...EXTENDING THE
THREAT TO THE EASTERN PART OF THE WATCH BY EVENING.INTENSE
THUNDERSTORMS...INCLUDING A FEW LONGER-LIVED
SUPERCELLS AND SUPERCELL CLUSTERS...EXPECTED TO FORM/INCREASE OVER
WATCH AREA THROUGH THIS EVENING. STORMS WILL BE CAPABLE OF VERY
LARGE HAIL...DAMAGING WIND...AND A FEW TORNADOES.  SOME STORMS MAY
EVOLVE INTO LARGER ESE-MOVING  CLUSTERS AND LINES...EXTENDING THE
THREAT TO THE EASTERN PART OF THE WATCH BY EVENING.INTENSE
THUNDERSTORMS...INCLUDING A FEW LONGER-LIVED

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH NORTHEAST OF
RAPID CITY SOUTH DAKOTA TO 20 MILES SOUTH OF MULLEN NEBRASKA. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 335...WW 336...WW
337...WW 338...WW 339...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 29040.


...CORFIDI

Tornado Watches in South Dakota, 2016Tornado Watches in Nebraska, 2016Every tornado watch in 2016

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.