Tornado Watch 67

Issued

Mar 6, 2017, 9:21 PM CST (03:21 UTC)

Expired

Mar 7, 2017, 4:53 AM CST

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Little Rock radar (KLZK), 106 km from the middle of the area, began a volume at 03:23 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

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

20%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 258Mar 6, 6:02 PM CST
• Mesoscale Discussion 264Mar 6, 8:10 PM CST
• Mesoscale Discussion 266Mar 6, 9:16 PM CST
• Mesoscale Discussion 268Mar 6, 11:13 PM CST
• Mesoscale Discussion 270Mar 7, 2:58 AM CST

089 
WWUS20 KWNS 070319
SEL7  
SPC WW 070319
ARZ000-MOZ000-071100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 67
NWS Storm Prediction Center Norman OK
920 PM CST Mon Mar 6 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northern and central Arkansas
  Southeast Missouri

* Effective this Monday night and Tuesday morning from 920 PM
  until 500 AM CST.

* Primary threats include...
  A few tornadoes possible
  Isolated damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...Semi-discrete supercell storms are expected to develop
initially across the northern half of Arkansas through the late
evening hours. Given extreme low-level shear and increasingly
low-level moisture, any sustained storm could be a capable of
producing a tornado. More numerous storms will move across the
region later tonight as an upstream cold front approaches from the
northwest, with a damaging wind and some tornado risk continuing
overnight.

The tornado watch area is approximately along and 60 statute miles
north and south of a line from 65 miles west northwest of Hot
Springs AR to 40 miles east of Poplar Bluff MO. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).

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 61...WW 62...WW 63...WW
64...WW 65...WW 66...

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 24040.

...Guyer

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; radar from the NEXRAD Level II archive.