Tornado Watch 243

Issued

May 18, 2017, 10:58 PM CDT (03:58 UTC)

Expired

May 19, 2017, 4:33 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

50%

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

80%

• Mesoscale Discussion 772May 18, 9:41 PM CDT
• Mesoscale Discussion 773May 18, 11:48 PM CDT

529 
WWUS20 KWNS 190355
SEL3  
SPC WW 190355
ARZ000-MOZ000-190800-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 243
NWS Storm Prediction Center Norman OK
1100 PM CDT Thu May 18 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northwest Arkansas
  Southwest Missouri

* Effective this Thursday night and Friday morning from 1100 PM
  until 300 AM CDT.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging winds likely with isolated significant gusts
    to 80 mph possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible

SUMMARY...A fast-moving bow echo over eastern Oklahoma will track
northeastward across the watch area, posing a risk of relatively
widespread damaging wind gusts.  Isolated tornadoes may also occur
along the leading edge of the line.

The tornado watch area is approximately along and 60 statute miles
north and south of a line from 20 miles west of Fayetteville AR to 5
miles east southeast 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 240...WW 241...WW 242...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 24040.

...Hart

Tornado Watches in Arkansas, 2017Tornado Watches in Missouri, 2017Every tornado watch in 2017

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.