Tornado Watch 437

Issued

Aug 14, 2020, 2:36 PM CDT (19:36 UTC)

Expired

Aug 14, 2020, 8:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Minneapolis radar (KMPX), 135 km from the middle of the area, began a volume at 19:40 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 1487 Severe potential...watch likelyAug 14, 1:57 PM CDT
• Mesoscale Discussion 1491 Tornado watch 437Aug 14, 4:53 PM CDT
• Mesoscale Discussion 1492 Severe thunderstorm watch 436Aug 14, 5:35 PM CDT

080 
WWUS20 KWNS 141932
SEL7  
SPC WW 141932
MNZ000-SDZ000-150100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 437
NWS Storm Prediction Center Norman OK
235 PM CDT Fri Aug 14 2020

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Western and central Minnesota
  Far northeast South Dakota

* Effective this Friday afternoon and evening from 235 PM until
  800 PM CDT.

* 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
    inches in diameter possible

SUMMARY...Multiple supercells should initiate near the northeast
South Dakota and west-central Minnesota border area, while
additional cells develop south along a cold front. All hazards will
be possible, but damaging winds should be the most likely threat as
storms consolidate into an eastward-moving line across central
Minnesota.

The tornado watch area is approximately along and 60 statute miles
east and west of a line from 25 miles north of Alexandria MN to 10
miles south of Redwood Falls MN. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU7).

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 436...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 28030.

...Grams

Tornado Watches in Minnesota, 2020Every tornado watch in 2020

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.