503
WWUS20 KWNS 192300
SEL7
SPC WW 192300
COZ000-NEZ000-SDZ000-200500-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 557
NWS Storm Prediction Center Norman OK
500 PM MDT Fri Jul 19 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Far Northeast Colorado
  Western and Central Nebraska
  Southwest South Dakota

* Effective this Friday afternoon and evening from 500 PM until
  1100 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...Ongoing supercells should continue to pose a threat for
large hail up to 1-2 inches in diameter as they move generally
southward this evening. Some threat for damaging winds around 60-75
mph may also exist, especially if a thunderstorm cluster can develop
later this evening.

The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 5 miles east northeast of
Rapid City SD to 35 miles west southwest of North Platte NE. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).

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 555...WW 556...

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
35025.

...Gleason