Severe Thunderstorm Watch 307

Issued

Jun 23, 2021, 10:37 PM CDT (03:37 UTC)

Expired

Jun 24, 2021, 5:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

80 kt

The Grand Island radar (KUEX), 172 km from the middle of the area, began a volume at 03:39 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

10%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

60%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1071 Severe thunderstorm watch 306Jun 23, 8:10 PM CDT
• Mesoscale Discussion 1072 Severe thunderstorm watch 306Jun 23, 10:12 PM CDT
• Mesoscale Discussion 1073 Severe thunderstorm watch 307Jun 24, 1:36 AM CDT

193 
WWUS20 KWNS 240335
SEL7  
SPC WW 240335
IAZ000-NEZ000-241000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 307
NWS Storm Prediction Center Norman OK
1035 PM CDT Wed Jun 23 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Far western Iowa
  Central to eastern Nebraska

* Effective this Wednesday night and Thursday morning from 1035
  PM until 500 AM CDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 90
    mph likely
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible

SUMMARY...A forward-propagating cluster will likely develop
east-southeast from ongoing cells across north-central Nebraska,
spreading into eastern Nebraska and far western Iowa overnight.
Intense severe wind gusts are possible.

The severe thunderstorm watch area is approximately along and 65
statute miles north and south of a line from 35 miles northwest of
Broken Bow NE to 20 miles northeast of Omaha NE. 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 306...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 80 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
29040.

...Grams

Severe Thunderstorm Watches in Nebraska, 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.