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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 58
NWS Storm Prediction Center Norman OK
540 PM CDT Mon Apr 30 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
central and northeast Nebraska
southeast South Dakota
* Effective this Monday afternoon and evening from 540 PM until
1100 PM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A cold front will continue to move eastward across the
central and northern Plains this evening. Enough instability
combined with moderate deep-layer and steep low-level lapse rates
will make damaging wind gusts and hail possible as storms increase
in coverage through early to mid evening.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 15 miles east northeast
of Watertown SD to 30 miles southeast of Broken Bow NE. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU8).
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
OTHER WATCH INFORMATION...CONTINUE...WW 57...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector