Tornado Watch 343

Issued

Aug 19, 2018, 4:07 PM CDT (21:07 UTC)

Expired

Aug 19, 2018, 11:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Springfield radar (KSGF), 83 km from the middle of the area, began a volume at 21:08 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

30%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

60%

• Mesoscale Discussion 1323Aug 19, 3:45 PM CDT
• Mesoscale Discussion 1324Aug 19, 5:47 PM CDT

037 
WWUS20 KWNS 192104
SEL3  
SPC WW 192104
ARZ000-KSZ000-MOZ000-OKZ000-200200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 343
NWS Storm Prediction Center Norman OK
405 PM CDT Sun Aug 19 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northwest Arkansas
  Extreme southeast Kansas
  Southern Missouri
  Northeast Oklahoma

* Effective this Sunday afternoon and evening from 405 PM until
  900 PM CDT.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Scattered thunderstorms are developing across northeast
Oklahoma, with a few rotating/supercells forming.  The potential
will exist for isolated tornadoes, as well as locally damaging wind
gusts, through the afternoon and early evening.

The tornado watch area is approximately along and 110 statute miles
east and west of a line from 10 miles northeast of Springfield MO to
40 miles south of Harrison AR. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU3).

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 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25025.

...Hart

Tornado Watches in Missouri, 2018Tornado Watches in Arkansas, 2018Tornado Watches in Oklahoma, 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.