Severe Thunderstorm Watch 294

Issued

Jun 20, 2021, 4:01 PM CDT (21:01 UTC)

Expired

Jun 20, 2021, 11:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Des Moines radar (KDMX), 130 km from the middle of the area, began a volume at 21:05 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

60%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1033 Severe potential...watch possibleJun 20, 1:10 PM CDT
• Mesoscale Discussion 1035 Severe potential...watch possibleJun 20, 2:02 PM CDT
• Mesoscale Discussion 1037 Severe thunderstorm watch 293Jun 20, 5:22 PM CDT
• Mesoscale Discussion 1039 Severe thunderstorm watch 294Jun 20, 6:56 PM CDT
• Mesoscale Discussion 1042 Severe thunderstorm watch 294Jun 20, 9:56 PM CDT

332 
WWUS20 KWNS 202059
SEL4  
SPC WW 202059
IAZ000-ILZ000-KSZ000-MOZ000-210400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 294
NWS Storm Prediction Center Norman OK
400 PM CDT Sun Jun 20 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southern Iowa
  West Central Illinois
  Northeast Kansas
  Northern Missouri

* Effective this Sunday afternoon and evening from 400 PM until
  1100 PM CDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2
    inches in diameter likely
  Scattered damaging wind gusts to 70 mph likely
  A tornado or two possible

SUMMARY...Thunderstorms will continue to develop along a cold front
extending across western Iowa into northwest Missouri.  These storms
will track eastward across the watch through the evening, posing a
risk of damaging wind gusts and hail.

The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 45 miles north of Cedar
Rapids IA to 25 miles east of Kansas City MO. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU4).

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 293...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28030.

...Hart

Severe Thunderstorm Watches in Iowa, 2021Severe Thunderstorm Watches in Missouri, 2021Severe Thunderstorm Watches in Kansas, 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.