Severe Thunderstorm Watch 140

Issued

May 4, 2021, 1:41 AM CDT (06:41 UTC)

Expired

May 4, 2021, 8:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Paducah radar (KPAH), 98 km from the middle of the area, began a volume at 06:42 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

2%

Ten or more severe wind reports

70%

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

90%

• Mesoscale Discussion 516 Severe potential...watch likelyMay 4, 1:06 AM CDT
• Mesoscale Discussion 518 Severe potential...watch unlikelyMay 4, 1:17 AM CDT
• Mesoscale Discussion 519 Severe thunderstorm watch 137May 4, 2:02 AM CDT
• Mesoscale Discussion 520 Severe thunderstorm watch 140May 4, 4:17 AM CDT

942 
WWUS20 KWNS 040637
SEL0  
SPC WW 040637
ARZ000-ILZ000-KYZ000-MOZ000-TNZ000-041300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 140
NWS Storm Prediction Center Norman OK
140 AM CDT Tue May 4 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northeast Arkansas
  Far Southern Illinois
  Western Kentucky
  Southeast Missouri
  Western/Middle Tennessee

* Effective this Tuesday morning from 140 AM until 800 AM CDT.

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

SUMMARY...A cluster of storms will continue to organize and
accelerate east-northeastward overnight across the region. Damaging
winds can be expected through the early morning hours, along some
potential for isolated large hail and/or a brief tornado.

The severe thunderstorm watch area is approximately along and 80
statute miles north and south of a line from 10 miles southwest of
Walnut Ridge AR to 20 miles southeast of Clarksville 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 137...WW 138...WW 139...

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
24035.

...Guyer

Severe Thunderstorm Watches in Tennessee, 2021Severe Thunderstorm Watches in Kentucky, 2021Severe Thunderstorm Watches in Arkansas, 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.