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Ongoing cluster of thunderstorms, including a supercell, is forecast to continue southeastward into south-central South Dakota and far north-central Nebraska tonight. Ample buoyancy exists across this region, suggesting the storms will remain severe as they move through. Primary risk is strong to severe wind gusts, including the potential for gusts to 75 mph. Large hail could occur as well, with an isolated instance or two of very large hail (i.e. 2" in diameter) possible.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 572
NWS Storm Prediction Center Norman OK
1020 PM CDT Tue Aug 11 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Far North-Central Nebraska
South-Central South Dakota
* Effective this Tuesday night and Wednesday morning from 1020 PM
until 600 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
SUMMARY...Ongoing cluster of thunderstorms, including a supercell,
is forecast to continue southeastward into south-central South
Dakota and far north-central Nebraska tonight. Ample buoyancy exists
across this region, suggesting the storms will remain severe as they
move through. Primary risk is strong to severe wind gusts, including
the potential for gusts to 75 mph. Large hail could occur as well,
with an isolated instance or two of very large hail (i.e. 2" in
diameter) possible.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 70 miles northwest of
Valentine NE to 50 miles north northeast of Oneill NE. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).
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 570...
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
28035.
...Mosier
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