Tornado Watch 328

Issued

Jun 18, 2014, 7:37 PM CDT (00:37 UTC)

Expired

Jun 19, 2014, 1:46 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

Counties Dickey County, ND, LaMoure County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, Roberts County, SD, Spink County, SD

The Aberdeen radar (KABR), 53 km from the middle of the area, began a volume at 00:37 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

30%

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

60%

• Mesoscale Discussion 1068Jun 18, 5:23 PM CDT
• Mesoscale Discussion 1074Jun 18, 8:47 PM CDT

579 
WWUS20 KWNS 190038
SEL8  
SPC WW 190038
NDZ000-SDZ000-190700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 328
NWS STORM PREDICTION CENTER NORMAN OK
740 PM CDT WED JUN 18 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHEASTERN NORTH DAKOTA
  NORTHEASTERN SOUTH DAKOTA

* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 740 PM
  UNTIL 200 AM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL AND 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 55 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF
WATERTOWN SOUTH DAKOTA TO 65 MILES NORTH NORTHEAST OF ABERDEEN
SOUTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

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 322...WW 323...WW
324...WW 326...WW 327...

DISCUSSION...BKN BAND OF SVR TSTMS WITH INTERMITTENT/EMBEDDED
MESOCYCLONES IS EXPECTED TO PROCEED EWD FROM WW 322 INTO THIS WW. 
ENVIRONMENT SHOULD REMAIN FAVORABLE FOR ALL SVR MODES FOR SEVERAL
MORE HOURS GIVEN FAVORABLE STORM-RELATIVE BOUNDARY-LAYER
WINDS...ENLARGED LOW-LEVEL HODOGRAPHS AND LARGE CAPE...EVIDENT IN
00Z ABR RAOB AND FCST SOUNDINGS.

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
600. MEAN STORM MOTION VECTOR 24020.


...EDWARDS

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