Severe Thunderstorm Watch 414

Issued

Aug 7, 2021, 6:35 PM CDT (23:35 UTC)

Expired

Aug 8, 2021, 1:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Grand Island radar (KUEX), 85 km from the middle of the area, began a volume at 23:36 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

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1436 Severe thunderstorm watch 412Aug 7, 6:11 PM CDT
• Mesoscale Discussion 1439 Severe thunderstorm watch 414Aug 7, 9:35 PM CDT
• Mesoscale Discussion 1440 Severe thunderstorm watch 414Aug 7, 11:19 PM CDT

166 
WWUS20 KWNS 072333
SEL4  
SPC WW 072333
IAZ000-KSZ000-NEZ000-080600-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 414
NWS Storm Prediction Center Norman OK
635 PM CDT Sat Aug 7 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southwest Iowa
  Northern Kansas
  Southeast Nebraska

* Effective this Saturday night and Sunday morning from 635 PM
  until 100 AM CDT.

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

SUMMARY...Thunderstorms will become more numerous this evening
across the watch area, with scattered intense cells expected. 
Damaging wind gusts and hail will be possible in the more organized
clusters.

The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 40 miles south southeast
of Russell KS to 35 miles northwest of Omaha NE. 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 412...WW 413...

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
27030.

...Hart

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