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Severe Weather Watches Overview

Watch data currently updates every 15 minutes.

EXPIRED Severe Thunderstorm Watch #0410 for Northeast Colorado, Western and Northern Nebraska, Southern South Dakota, Southeast Wyoming

Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible

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EXPIRED Severe Thunderstorm Watch #0410

Locations Affected

Northeast Colorado

Western and Northern Nebraska

Southern South Dakota

Southeast Wyoming

Severe Thunderstorm Watch Summary

Severe thunderstorms are expected to continue to develop regionally mainly near a southwest/northeast-oriented front, with an unstable air mass and moderately strong wind profiles supporting supercells and hail/wind potential, and possibly even a brief tornado.

Severe Weather Threats

Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible

Scattered damaging wind gusts to 70 mph possible

A tornado or two possible

Severe Thunderstorm Watch Details

SEL0

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 410
NWS Storm Prediction Center Norman OK
255 PM MDT Thu Jun 12 2025

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northeast Colorado
  Western and Northern Nebraska
  Southern South Dakota
  Southeast Wyoming

* Effective this Thursday afternoon and evening from 255 PM until
  1100 PM MDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2.5
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Severe thunderstorms are expected to continue to develop
regionally mainly near a southwest/northeast-oriented front, with an
unstable air mass and moderately strong wind profiles supporting
supercells and hail/wind potential, and possibly even a brief
tornado.

The severe thunderstorm watch area is approximately along and 75
statute miles north and south of a line from 40 miles east southeast
of Chamberlain SD to 75 miles south southwest of Torrington WY. For
a complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).

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 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26025.

...Guyer

National Risk Overview

Thursday, June 12: TORNADO: 2%; HAIL: 15%; WIND: 15%
Friday, June 13: TORNADO: 2%; HAIL: 15%; WIND: 15%
Saturday, June 14: ANY SEVERE: 5%
Sunday, June 15: ANY SEVERE: predictability too low
Monday, June 16: ANY SEVERE: predictability too low
Tuesday, June 17: ANY SEVERE: predictability too low
Wednesday, June 18: ANY SEVERE: predictability too low
Thursday, June 19: ANY SEVERE: predictability too low

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