Severe Thunderstorm Watch 217

Issued

May 27, 2021, 5:12 PM CDT (22:12 UTC)

Expired

May 28, 2021, 1:00 AM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Western Arkansas radar (KSRX), 111 km from the middle of the area, began a volume at 22:13 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

5%

Ten or more severe wind reports

60%

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 768 Severe potential...watch possibleMay 27, 2:06 PM CDT
• Mesoscale Discussion 773 Severe potential...severe thunderstorm watch likelyMay 27, 4:52 PM CDT
• Mesoscale Discussion 778 Severe thunderstorm watch 217May 27, 8:17 PM CDT
• Mesoscale Discussion 779 Severe thunderstorm watch 217May 27, 9:27 PM CDT

085 
WWUS20 KWNS 272210
SEL7  
SPC WW 272210
ARZ000-280600-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 217
NWS Storm Prediction Center Norman OK
510 PM CDT Thu May 27 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northern and central Arkansas

* Effective this Thursday afternoon and Friday morning from 510
  PM until 100 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...Am organizing complex of strong-severe thunderstorms over
northeastern Oklahoma will encounter a richly moist/unstable air
mass over Arkansas.  Damaging/severe wind will be the main hazard. 
Isolated large hail also is possible.  A tornado or two cannot be
ruled out, mainly where the complex interacts with outflow from
nonsevere to marginally severe storms now to its east, in northern
Arkansas.

The severe thunderstorm watch area is approximately along and 80
statute miles north and south of a line from 20 miles southwest of
Fort Smith AR to 40 miles east southeast of Batesville AR. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).

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 214...WW 215...WW 216...

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 600. Mean storm motion vector
29035.

...Edwards

Severe 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.