Tornado Watch 150

Issued

Apr 28, 2020, 3:18 PM CDT (20:18 UTC)

Expired

Apr 28, 2020, 10:49 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

70 kt

The Tulsa radar (KINX), 32 km from the middle of the area, began a volume at 20:17 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

20%

Ten or more severe wind reports

90%

One or more gusts of 65 knots or more

70%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

80%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 484Apr 28, 1:55 PM CDT
• Mesoscale Discussion 489Apr 28, 6:15 PM CDT
• Mesoscale Discussion 490Apr 28, 6:32 PM CDT
• Mesoscale Discussion 497Apr 28, 10:08 PM CDT

290 
WWUS20 KWNS 282016
SEL0  
SPC WW 282016
ARZ000-KSZ000-MOZ000-OKZ000-290400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 150
NWS Storm Prediction Center Norman OK
315 PM CDT Tue Apr 28 2020

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northwest Arkansas
  Southeast Kansas
  Southwest Missouri
  Eastern Oklahoma

* Effective this Tuesday afternoon and evening from 315 PM until
  1100 PM CDT.

* Primary threats include...
  A few tornadoes likely
  Widespread large hail and scattered very large hail events to 3
    inches in diameter likely
  Widespread damaging winds and isolated significant gusts to 80
    mph likely

SUMMARY...Rapid severe storm development is expected soon across
southeast Kansas, and these storms will likely grow upscale quickly
this evening while surging southeastward into northeast Oklahoma,
southwest Missouri, and northwest Arkansas.  The initial storms
could be supercells with the potential for a couple of tornadoes and
very large hail.  Embedded supercells and bowing segments are
expected later this evening with upscale growth of the storms into a
squall line, and an increasing threat for widespread/significant
wind damage.

The tornado watch area is approximately along and 105 statute miles
north and south of a line from 45 miles southwest of Tulsa OK to 10
miles south of Monett MO. 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.

&&

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 600. Mean
storm motion vector 32035.

...Thompson

Tornado Watches in Oklahoma, 2020Tornado Watches in Kansas, 2020Tornado Watches in Missouri, 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.