Tornado Watch 40

Issued

Apr 13, 2018, 1:50 PM CDT (18:50 UTC)

Expired

Apr 13, 2018, 10:00 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Particularly dangerous situation

Yes

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Shreveport radar (KSHV), 103 km from the middle of the area, began a volume at 18:49 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

95%

One or more EF2 to EF5 tornadoes

80%

Ten or more severe wind reports

80%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 238Apr 13, 12:41 PM CDT
• Mesoscale Discussion 244Apr 13, 5:53 PM CDT
• Mesoscale Discussion 245Apr 13, 6:50 PM CDT
• Mesoscale Discussion 246Apr 13, 7:06 PM CDT
• Mesoscale Discussion 247Apr 13, 8:36 PM CDT
• Mesoscale Discussion 249Apr 13, 8:54 PM CDT

136 
WWUS20 KWNS 131847
SEL0  
SPC WW 131847
ARZ000-LAZ000-OKZ000-TXZ000-140300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 40
NWS Storm Prediction Center Norman OK
150 PM CDT Fri Apr 13 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Much of Arkansas
  Northwest Louisiana
  Southeast Oklahoma
  Northeast Texas

* Effective this Friday afternoon and evening from 150 PM until
  1000 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

* Primary threats include...
  Numerous tornadoes expected with a few intense tornadoes likely
  Widespread large hail and isolated very large hail events to 2.5
    inches in diameter likely
  Widespread damaging wind gusts to 70 mph likely

SUMMARY...Intense thunderstorms are expected to track across the
watch area this afternoon and early evening, posing a risk of
tornadoes, large hail and damaging winds.  Strong tornadoes are
possible.  Multiple rounds of severe storms are expected across this
region.

The tornado watch area is approximately along and 70 statute miles
east and west of a line from 70 miles south of Longview TX to 20
miles northeast of Flippin AR. 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 39...

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.

...Hart

Tornado Watches in Arkansas, 2018Tornado Watches in Texas, 2018Tornado Watches in Louisiana, 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.