Tornado Watch 314

Issued

Jun 19, 2015, 2:51 PM MDT (20:51 UTC)

Expired

Jun 19, 2015, 10:00 PM MDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Billings radar (KBLX), 222 km from the middle of the area, began a volume at 20:51 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

60%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1073Jun 19, 2:04 PM MDT
• Mesoscale Discussion 1076Jun 19, 4:48 PM MDT
• Mesoscale Discussion 1077Jun 19, 6:38 PM MDT
• Mesoscale Discussion 1079Jun 19, 9:31 PM MDT

766 
WWUS20 KWNS 192052
SEL4  
SPC WW 192052
MTZ000-SDZ000-WYZ000-200400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 314
NWS STORM PREDICTION CENTER NORMAN OK
250 PM MDT FRI JUN 19 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHEAST MONTANA
  WESTERN SOUTH DAKOTA
  NORTHEAST WYOMING

* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 250 PM UNTIL
  1000 PM MDT.

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

SUMMARY...ISOLATED SEVERE THUNDERSTORMS AND SUPERCELLS WILL POSE A
VERY LARGE HAIL AND SOME TORNADO RISK THROUGH THE EARLY EVENING
HOURS...ESPECIALLY ACROSS FAR SOUTHEAST MONTANA AND NORTHEAST
WYOMING INTO FAR WESTERN SOUTH DAKOTA. A SQUALL LINE SHOULD BEGIN TO
EVOLVE BY EARLY/MID-EVENING INTO SOUTH DAKOTA WITH A CONCENTRATED
CORRIDOR OF WIND DAMAGE BECOMING MORE OF A CONCERN.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 10 MILES SOUTH SOUTHWEST OF
BILLINGS MONTANA TO 30 MILES NORTH OF PHILIP SOUTH DAKOTA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU4).

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 313...

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 28025.


...GUYER

Tornado Watches in South Dakota, 2015Tornado Watches in Montana, 2015Tornado Watches in Wyoming, 2015Every tornado watch in 2015

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.