Storm Prediction Center Tornado Watch 448

Note: 
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.

   SEL8

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 448
   NWS Storm Prediction Center Norman OK
   750 PM CDT Fri Jun 20 2025

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Northwest into West-Central Minnesota
     Central and Eastern North Dakota
     Northern South Dakota

   * Effective this Friday night and Saturday morning from 750 PM
     until 300 AM CDT.

   * Primary threats include...
     A couple tornadoes possible
     Widespread damaging winds expected with isolated significant
       gusts to 105 mph likely
     Scattered large hail and isolated very large hail events to 2
       inches in diameter possible

   SUMMARY...An intense squall line is forecast to rapidly move east
   across the Watch area this evening into the overnight period.  A
   potential supercell tornado risk may develop with any storms that
   develop ahead of the squall line.  A tornado risk may accompany the
   stronger and more persistent embedded circulations within the line. 
   Widespread severe gusts (60-80 mph) are expected.  Swaths of 80-105
   mph gusts are possible with the more intense portions of the
   convective line.

   The tornado watch area is approximately along and 105 statute miles
   north and south of a line from 15 miles north northwest of Bismarck
   ND to 30 miles north northeast of Detroit Lakes MN. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU8).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Tornado Watch means conditions are favorable for
   tornadoes and 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 447...

   AVIATION...Tornadoes and a few severe thunderstorms with hail
   surface and aloft to 2 inches. Extreme turbulence and surface wind
   gusts to 90 knots. A few cumulonimbi with maximum tops to 550. Mean
   storm motion vector 26045.

   ...Smith

Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.

   SAW8 
   WW 448 TORNADO MN ND SD 210050Z - 210800Z
   AXIS..105 STATUTE MILES NORTH AND SOUTH OF LINE..
   15NNW BIS/BISMARCK ND/ - 30NNE DTL/DETROIT LAKES MN/
   ..AVIATION COORDS.. 90NM N/S /15NNW BIS - 33SW BJI/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..90 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26045.

   LAT...LON 48500087 48759564 45719564 45460087

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU8.

Watch 448 Status Report Message has not been issued yet.

Note:
 Click for Complete Product Text.

Tornadoes

Wind

Hail

Combined Severe Hail/Wind

For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The “Low” category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
“Moderate” from 30% to 60%, and “High” from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.