Severe Thunderstorm Watch 153

Issued

May 8, 2021, 4:00 PM CDT (21:00 UTC)

Expired

May 8, 2021, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Grand Island radar (KUEX), 148 km from the middle of the area, began a volume at 21:01 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

50%

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

90%

• Mesoscale Discussion 561 Severe potential...watch likelyMay 8, 3:24 PM CDT
• Mesoscale Discussion 563 Severe thunderstorm watch 153May 8, 6:06 PM CDT

974 
WWUS20 KWNS 082058
SEL3  
SPC WW 082058
KSZ000-NEZ000-090200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 153
NWS Storm Prediction Center Norman OK
400 PM CDT Sat May 8 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Parts of central and north central Kansas
  South central Nebraska

* Effective this Saturday afternoon and evening from 400 PM until
  900 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 possible
  A tornado or two possible

SUMMARY...Thunderstorm development is expected by about 5 pm CDT in
Kansas, with additional storms likely to form this evening into
southern Nebraska.  More isolated supercells with large hail and
damaging winds will be the main threat initially, with some
potential for upscale growth into a cluster toward 8-9 pm CDT.  A
tornado cannot be ruled out later this evening with any supercells
that persist near the surface warm front.

The severe thunderstorm watch area is approximately along and 40
statute miles east and west of a line from 50 miles south southwest
of Russell KS to 115 miles north of Russell KS. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).

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 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25025.

...Thompson

Severe Thunderstorm Watches in Kansas, 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.