Severe Thunderstorm Watch 566

Issued

Dec 15, 2021, 6:00 PM CST (00:00 UTC)

Expired

Dec 16, 2021, 12:00 AM CST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

65 kt

The Pleasant Hill radar (KEAX), 133 km from the middle of the area, began a volume at 00:06 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

30%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 2028 Severe potential...watch possibleDec 15, 2:29 PM CST
• Mesoscale Discussion 2033 Severe thunderstorm watch 564Dec 15, 5:01 PM CST
• Mesoscale Discussion 2035 Severe potential...watch needed soonDec 15, 5:30 PM CST
• Mesoscale Discussion 2037 Severe thunderstorm watch 566Dec 15, 7:14 PM CST
• Mesoscale Discussion 2039 Severe thunderstorm watch 566Dec 15, 9:48 PM CST

453 
WWUS20 KWNS 152357
SEL6  
SPC WW 152357
ARZ000-ILZ000-KSZ000-MOZ000-OKZ000-160600-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 566
NWS Storm Prediction Center Norman OK
600 PM CST Wed Dec 15 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northwest Arkansas
  West Central Illinois
  Southeast Kansas
  Central and Southwest Missouri
  Northeast Oklahoma

* Effective this Wednesday night from 600 PM until Midnight CST.

* Primary threats include...
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible
  Isolated large hail events to 1 inch in diameter possible
  A tornado or two possible

SUMMARY...A line of thunderstorms over eastern Kansas will track
eastward across the watch area this evening.  The strongest cores
along the line will pose a risk of locally damaging wind gusts.

The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 40 miles north northwest
of Quincy IL to 40 miles southwest of Grove OK. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).

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 563...WW 564...WW 565...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
24040.

...Hart

Severe Thunderstorm Watches in Missouri, 2021Severe Thunderstorm Watches in Illinois, 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.