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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 297
NWS Storm Prediction Center Norman OK
740 PM CDT Sun May 28 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
* Effective this Sunday night and Monday morning from 740 PM
until 300 AM CDT.
* Primary threats include...
Isolated very large hail events to 2.5 inches in diameter
Isolated damaging wind gusts to 70 mph possible
SUMMARY...Isolated severe thunderstorms should continue to increase
especially near the Rio Grande River vicinity this evening, with the
possibility of other storms gradually spreading in from Mexico
and/or south-central Texas. A very moist and unstable environment
will support the possibility of large hail and severe-caliber wind
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 25 miles west southwest
of Laredo TX to 10 miles north of Alice TX. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
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 293...WW 294...WW
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 600. Mean storm motion vector