Tornado Watch 39

Issued

Apr 13, 2018, 1:20 PM CDT (18:20 UTC)

Expired

Apr 13, 2018, 10:00 PM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Western Arkansas radar (KSRX), 80 km from the middle of the area, began a volume at 18:22 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

50%

One or more EF2 to EF5 tornadoes

30%

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 236Apr 13, 11:04 AM CDT
• Mesoscale Discussion 237Apr 13, 12:39 PM CDT
• Mesoscale Discussion 240Apr 13, 3:43 PM CDT
• Mesoscale Discussion 241Apr 13, 4:49 PM CDT
• Mesoscale Discussion 242Apr 13, 5:08 PM CDT
• Mesoscale Discussion 244Apr 13, 5:53 PM CDT

306 
WWUS20 KWNS 131816
SEL9  
SPC WW 131816
ARZ000-KSZ000-MOZ000-OKZ000-TXZ000-140300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 39
NWS Storm Prediction Center Norman OK
115 PM CDT Fri Apr 13 2018

The NWS Storm Prediction Center has issued a

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

* Effective this Friday afternoon and evening from 115 PM until
  1000 PM CDT.

* Primary threats include...
  A few tornadoes and a couple intense tornadoes possible
  Scattered large hail and isolated very large hail events to 2.5
    inches in diameter likely
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Storms developing along and ahead of the dryline are
expected to intensify and evolve into supercells capable of very
large hail, damaging wind and a few tornadoes.

The tornado watch area is approximately along and 70 statute miles
east and west of a line from 55 miles east northeast of Chanute KS
to 20 miles east southeast of Waco TX. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU9).

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 2.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.

...Dial

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