Severe Thunderstorm Watch 286

Issued

Jun 19, 2021, 1:44 PM MDT (19:44 UTC)

Expired

Jun 19, 2021, 9:00 PM MDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

65 kt

The Denver radar (KFTG), 134 km from the middle of the area, began a volume at 19:44 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

50%

One or more gusts of 65 knots or more

40%

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

80%

• Mesoscale Discussion 1012 Severe potential...severe thunderstorm watch likelyJun 19, 12:46 PM MDT
• Mesoscale Discussion 1016 Severe thunderstorm watch 286Jun 19, 3:24 PM MDT
• Mesoscale Discussion 1018 Severe thunderstorm watch 286Jun 19, 4:00 PM MDT

552 
WWUS20 KWNS 191941
SEL6  
SPC WW 191941
COZ000-NEZ000-200300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 286
NWS Storm Prediction Center Norman OK
140 PM MDT Sat Jun 19 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Eastern Colorado
  Nebraska Panhandle

* Effective this Saturday afternoon and evening from 140 PM until
  900 PM MDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 75
    mph possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible

SUMMARY...Thunderstorms will develop near the Front Range and move
east into the High Plains this afternoon and evening.  Large hail
and severe gusts will be the primary threats with the stronger
storms as a squall line eventually forms by early evening.

The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 15 miles northeast of
Scottsbluff NE to 10 miles south of La Junta CO. 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 285...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
26030.

...Smith

Severe Thunderstorm Watches in Colorado, 2021Severe 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.