Storm Prediction Center Severe Thunderstorm Watch 599

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

   SEL9

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 599
   NWS Storm Prediction Center Norman OK
   950 AM CDT Wed Aug 19 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Far Southwest Iowa
     Central into Eastern Nebraska

   * Effective this Wednesday morning and afternoon from 950 AM
     until 400 PM CDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph possible
     Scattered large hail events to 1.5 inches in diameter possible

   SUMMARY...A small cluster of severe thunderstorms is forecast to
   continue to move to the southeast through the Watch during the
   morning and into the afternoon.  Some upscale growth may occur
   through the late morning and into the afternoon.  Large hail and
   severe gusts 60 to 70 mph will be the primary hazards with these
   storms.

   The severe thunderstorm watch area is approximately along and 60
   statute miles east and west of a line from 45 miles northeast of
   Burwell NE to 15 miles south southeast of Lincoln NE. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU9).

   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.

   &&

   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 500. Mean storm motion vector
   31025.

   ...Smith

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

   SAW9 
   WW 599 SEVERE TSTM IA NE 191450Z - 192100Z
   AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
   45NE BUB/BURWELL NE/ - 15SSE LNK/LINCOLN NE/
   ..AVIATION COORDS.. 50NM E/W /16SSE ONL - 34NW PWE/
   HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 31025.

   LAT...LON 42239736 40649552 40649780 42239970

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU9.

Watch 599 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.