Severe Thunderstorm Watch 550

Issued

Dec 5, 2021, 8:54 PM CST (02:54 UTC)

Expired

Dec 6, 2021, 4:00 AM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Little Rock radar (KLZK), 145 km from the middle of the area, began a volume at 02:56 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

20%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1960 Severe potential...watch possibleDec 5, 5:05 PM CST
• Mesoscale Discussion 1961 Severe potential...watch likelyDec 5, 8:06 PM CST
• Mesoscale Discussion 1962 Severe thunderstorm watch 550Dec 5, 11:17 PM CST
• Mesoscale Discussion 1965 Severe thunderstorm watch 550Dec 6, 3:01 AM CST

234 
WWUS20 KWNS 060252
SEL0  
SPC WW 060252
ARZ000-MOZ000-OKZ000-TNZ000-061000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 550
NWS Storm Prediction Center Norman OK
855 PM CST Sun Dec 5 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northern and central Arkansas
  Southern Missouri
  Eastern Oklahoma
  Northwest Tennessee

* Effective this Sunday night and Monday morning from 855 PM
  until 400 AM CST.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible
  A tornado or two possible

SUMMARY...Storms will continue to develop and intensify along and
ahead of a cold front tonight, with a severe storm risk expected to
continue through much of the overnight.

The severe thunderstorm watch area is approximately along and 65
statute miles north and south of a line from 40 miles west northwest
of Fort Smith AR to 50 miles northeast of Dyersburg TN. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

AVIATION...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
26035.

...Guyer

Severe Thunderstorm Watches in Arkansas, 2021Severe Thunderstorm Watches in Missouri, 2021Severe Thunderstorm Watches in Oklahoma, 2021Every severe thunderstorm watch in 2021

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.