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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 326
NWS Storm Prediction Center Norman OK
555 PM CDT Tue Jun 13 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern North Dakota
* Effective this Tuesday afternoon and Wednesday morning from 555
PM until 100 AM CDT.
* 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-thunderstorm potential is increasing across the
watch area, north of a surface warm front and northeast of a surface
low, as the air mass at and especially above the surface continues
to destabilize. The main risks will be damaging wind and large hail
from activity emerging out of South Dakota, with an arching band or
complex of storms likely to evolve and sweep northeastward. A
tornado or two cannot be ruled out near the southern end of the
watch, closer to that warm front.
The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 75 miles south southeast
of Jamestown ND to 15 miles west northwest of Warroad MN. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).
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 323...WW 324...WW 325...
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