Tornado Watch 351

Issued

Aug 26, 2018, 7:37 PM CDT (00:37 UTC)

Expired

Aug 27, 2018, 1:01 AM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Aberdeen radar (KABR), 52 km from the middle of the area, began a volume at 00:38 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

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1365Aug 26, 6:15 PM CDT
• Mesoscale Discussion 1367Aug 26, 10:55 PM CDT

080 
WWUS20 KWNS 270032
SEL1  
SPC WW 270032
MNZ000-NDZ000-SDZ000-270700-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 351
NWS Storm Prediction Center Norman OK
735 PM CDT Sun Aug 26 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Extreme west central Minnesota
  Southeastern North Dakota
  North central and northeastern South Dakota

* Effective this Sunday night and Monday morning from 735 PM
  until 200 AM CDT.

* Primary threats include...
  A couple tornadoes possible
  Scattered large hail and isolated very large hail events to 3
    inches in diameter likely
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Isolated supercells will be possible the next few hours
across north central and northeastern South Dakota into southeastern
North Dakota, with the threat for a couple of tornadoes and very
large hail.  Later this evening into early tonight, storm coverage
should increase into southeastern North Dakota and Minnesota, with
an attendant threat for damaging winds and large hail.

The tornado watch area is approximately along and 65 statute miles
north and south of a line from 85 miles west of Aberdeen SD to 55
miles north of Ortonville MN. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU1).

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 350...

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 600. Mean
storm motion vector 25035.

...Thompson

Tornado Watches in South Dakota, 2018Tornado Watches in North Dakota, 2018Tornado Watches in Minnesota, 2018Every tornado watch in 2018

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.