Storm Prediction Center Severe Thunderstorm Watch 601

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

   SEL1

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 601
   NWS Storm Prediction Center Norman OK
   240 PM MST Wed Aug 19 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southern Arizona

   * Effective this Wednesday afternoon and evening from 240 PM
     until 1100 PM MST.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph possible

   SUMMARY...Strong to severe storms will continue to develop
   especially over the mountains, with some storm organization and
   aggregating outflows expected to reach the desert floor, with
   severe-caliber wind gusts and blowing dust possible through at least
   early/mid-evening.

   The severe thunderstorm watch area is approximately along and 95
   statute miles east and west of a line from 60 miles northeast of
   Phoenix AZ to 35 miles west southwest of Sierra Vista AZ. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU1).

   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 600...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   03020.

   ...Guyer

   SEL1

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 601
   NWS Storm Prediction Center Norman OK
   240 PM MST Wed Aug 19 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southern Arizona

   * Effective this Wednesday afternoon and evening from 240 PM
     until 1100 PM MST.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph possible

   SUMMARY...Strong to severe storms will continue to develop
   especially over the mountains, with some storm organization and
   aggregating outflows expected to reach the desert floor, with
   severe-caliber wind gusts and blowing dust possible through at least
   early/mid-evening.

   The severe thunderstorm watch area is approximately along and 95
   statute miles east and west of a line from 60 miles northeast of
   Phoenix AZ to 35 miles west southwest of Sierra Vista AZ. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU1).

   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 600...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   03020.

   ...Guyer

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

   SAW1 
   WW 601 SEVERE TSTM AZ 192140Z - 200600Z
   AXIS..95 STATUTE MILES EAST AND WEST OF LINE..
   60NE PHX/PHOENIX AZ/ - 35WSW FHU/SIERRA VISTA AZ/
   ..AVIATION COORDS.. 85NM E/W /52NE PHX - 43S TUS/
   HAIL SURFACE AND ALOFT..0.5 INCH. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 03020.

   LAT...LON 34030962 31370927 31371249 34031294

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU1.

Watch 601 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.