Severe Thunderstorm Watch 306

Issued

Jun 23, 2021, 3:40 PM MDT (21:40 UTC)

Expired

Jun 23, 2021, 9:45 PM MDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

70 kt

The North Platte radar (KLNX), 38 km from the middle of the area, began a volume at 21:42 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

2%

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 1067 Severe potential...watch possibleJun 23, 2:51 PM MDT
• Mesoscale Discussion 1070 Severe thunderstorm watch 306Jun 23, 5:13 PM MDT
• Mesoscale Discussion 1071 Severe thunderstorm watch 306Jun 23, 7:10 PM MDT
• Mesoscale Discussion 1072 Severe thunderstorm watch 306Jun 23, 9:12 PM MDT

655 
WWUS20 KWNS 232137
SEL6  
SPC WW 232137
NEZ000-240400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 306
NWS Storm Prediction Center Norman OK
440 PM CDT Wed Jun 23 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Western to central Nebraska

* Effective this Wednesday afternoon and evening from 440 PM
  until 1100 PM CDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 80
    mph likely
  Scattered large hail and isolated very large hail events to 2.5
    inches in diameter possible

SUMMARY...A few high-based supercells should initially develop
across the Panhandle into north-central portions of Nebraska. Later
this evening, thunderstorms should increase in coverage and develop
into a forward-propagating cluster across western to central
Nebraska.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 10 miles northeast of
Oneill NE to 80 miles west southwest of Mullen NE. 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.

&&

AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
30030.

...Grams

Severe Thunderstorm Watches in Nebraska, 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.