Tornado Watch 100

Issued

Mar 29, 2017, 4:17 PM CDT (21:17 UTC)

Expired

Mar 30, 2017, 12:00 AM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Western Arkansas radar (KSRX), 61 km from the middle of the area, began a volume at 21:18 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 369Mar 29, 2:51 PM CDT
• Mesoscale Discussion 372Mar 29, 7:34 PM CDT
• Mesoscale Discussion 374Mar 29, 9:44 PM CDT

103 
WWUS20 KWNS 292115
SEL0  
SPC WW 292115
ARZ000-OKZ000-TXZ000-300500-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 100
NWS Storm Prediction Center Norman OK
420 PM CDT Wed Mar 29 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Western and northern Arkansas
  Far eastern Oklahoma
  Far northeast Texas

* Effective this Wednesday afternoon from 420 PM until Midnight
  CDT.

* Primary threats include...
  A couple tornadoes possible
  Isolated very large hail events to 2 inches in diameter possible
  Isolated damaging wind gusts to 70 mph possible

SUMMARY...Increasing convection currently focused across western
Arkansas should continue to intensify through the remainder of the
afternoon into this evening. Some severe hail will initially be
possible, with an early-evening increase of low-level shear
supportive of a tornado/damaging wind risk as well.

The tornado watch area is approximately along and 60 statute miles
east and west of a line from 15 miles north northeast of Harrison AR
to 30 miles south southwest of Texarkana 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 98...WW 99...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23035.

...Guyer

Tornado Watches in Arkansas, 2017Tornado Watches in Oklahoma, 2017Tornado Watches in Texas, 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; radar from the NEXRAD Level II archive.