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Severe Thunderstorm Warning 0077
Issued by the Phoenix Forecast Office

Action Issued Starts Expiration
New 2026-08-15 19:43:04 2026-08-15 19:42:00 2026-08-15 20:30:00
Continued 2026-08-15 19:55:04 2026-08-15 20:30:00
Cancelled 2026-08-15 20:07:04 2026-08-15 20:30:00


Action: New
Issued At: 2026-08-15 19:43:04

730 
WUUS55 KPSR 160042
SVRPSR
CAC025-160130-
/O.NEW.KPSR.SV.W.0077.260816T0042Z-260816T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
542 PM PDT Sat Aug 15 2026

The National Weather Service in Phoenix has issued a

* Severe Thunderstorm Warning for...
  Southwestern Imperial County in southeastern California...

* Until 630 PM PDT.

* At 542 PM PDT, a severe thunderstorm was located over Mt. Signal,
  or 9 miles west of Calexico, moving north at 15 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  El Centro, Mt. Signal, Dixieland, Seeley, and Heber.

This includes the following highways...
CA Interstate 8 between mile markers 25 and 40.
CA Route 111 between mile markers 5 and 7.
CA Route 86 between mile markers 1 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3281 11579 3277 11548 3266 11553 3266 11555
      3264 11579
TIME...MOT...LOC 0042Z 191DEG 12KT 3266 11567 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

18


Action: Continued
Issued At: 2026-08-15 19:55:04

076 
WWUS55 KPSR 160054
SVSPSR

Severe Weather Statement
National Weather Service Phoenix AZ
554 PM PDT Sat Aug 15 2026

CAC025-160130-
/O.CON.KPSR.SV.W.0077.000000T0000Z-260816T0130Z/
Imperial CA-
554 PM PDT Sat Aug 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM PDT
FOR SOUTHWESTERN IMPERIAL COUNTY...

At 554 PM PDT, a severe thunderstorm was located over Mt. Signal, or
8 miles southwest of El Centro, moving north at 15 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
El Centro, Mt. Signal, Dixieland, Seeley, and Heber.

This includes the following highways...
CA Interstate 8 between mile markers 25 and 40.
CA Route 111 between mile markers 5 and 7.
CA Route 86 between mile markers 1 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3281 11579 3277 11548 3266 11553 3266 11555
      3264 11579
TIME...MOT...LOC 0054Z 191DEG 12KT 3270 11566 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

18


Action: Cancelled
Issued At: 2026-08-15 20:07:04

421 
WWUS55 KPSR 160106
SVSPSR

Severe Weather Statement
National Weather Service Phoenix AZ
606 PM PDT Sat Aug 15 2026

CAC025-160116-
/O.CAN.KPSR.SV.W.0077.000000T0000Z-260816T0130Z/
Imperial CA-
606 PM PDT Sat Aug 15 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN IMPERIAL COUNTY
IS CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

&&

LAT...LON 3281 11579 3277 11548 3266 11553 3266 11555
      3264 11579
TIME...MOT...LOC 0104Z 191DEG 12KT 3274 11565 

$$

18



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