Alert archive / Arizona / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 38, NWS Phoenix, AZ

August 26, 2013La Paz County, Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 26, 2013, 9:11 PM MST for La Paz County, Maricopa County, Arizona. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 26, 2013, 9:11 PM MST (04:11 UTC)
Expired: Aug 26, 2013, 9:45 PM MST
In force: 34 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon

Counties La Paz County, AZ, Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 148 km from the middle of the area, began a volume at 04:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 4.2 hours before the alert went out and 118 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 183 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 2211 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 26, 6:20 PM MST, 2 hours 51 minutes earlier.

Area forecast discussion, Aug 26, 6:20 PM MST, 2 hours 51 minutes before

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Hazardous weather outlook, Aug 26, 4:52 AM MST, 16 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
452 AM MST MON AUG 26 2013

AZZ020-021-025-026-CAZ030>033-271200-
LOWER COLORADO RIVER VALLEY AZ-WEST CENTRAL DESERTS-
YUMA/MARTINEZ LAKE AND VICINITY-SOUTHWEST DESERTS-
JOSHUA TREE NATIONAL PARK-LOWER COLORADO RIVER VALLEY CA-
RIVERSIDE COUNTY/EASTERN DESERTS-IMPERIAL COUNTY-
452 AM MST MON AUG 26 2013 /452 AM PDT MON AUG 26 2013/

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST
ARIZONA...EXTREME WEST-CENTRAL ARIZONA...SOUTHWEST ARIZONA...WEST-
CENTRAL ARIZONA...EXTREME SOUTHEAST CALIFORNIA AND SOUTHEAST
CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.

SHOWERS WITH EMBEDDED ISOLATED THUNDERSTORMS ARE EXPECTED THROUGH THIS
EVENING. THE PRIMARY HAZARD IS VERY HEAVY RAIN LEADING TO LOCALIZED FLASH
FLOODING. A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 8 PM THIS
EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

MOISTURE WILL BE DECREASING SLIGHTLY TUESDAY AND WEDNESDAY...THOUGH A
SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS WILL EXIST.
BETTER CHANCES FOR MORE EXPANSIVE THUNDERSTORM ACTIVITY WILL OCCUR ON
THURSDAY AND FRIDAY. THE PRIMARY WEATHER HAZARDS WILL BE GUSTY WINDS
IN EXCESS OF 40 MPH...DEADLY LIGHTNING...LOCALLY HEAVY RAIN LEADING
TO FLOODING OF WASHES AND LOW LYING AREAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

AZZ022-023-027-028-271200-
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
452 AM MST MON AUG 26 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH-CENTRAL ARIZONA.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND EVENING. THE
PRIMARY HAZARDS ARE VERY HEAVY RAIN LEADING TO FLASH FLOODING...AND
DEADLY LIGHTNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

MOISTURE WILL BE DECREASING SLIGHTLY TUESDAY AND WEDNESDAY...THOUGH A
SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS WILL EXIST.
BETTER CHANCES FOR MORE EXPANSIVE THUNDERSTORM ACTIVITY WILL OCCUR ON
THURSDAY AND FRIDAY. THE PRIMARY WEATHER HAZARDS WILL BE GUSTY WINDS
IN EXCESS OF 40 MPH...DEADLY LIGHTNING...LOCALLY HEAVY RAIN LEADING
TO FLOODING OF WASHES AND LOW LYING AREAS. AREAS OF BLOWING DUST MAY
ALSO BE POSSIBLE WITH THUNDERSTORM OUTFLOWS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

AZZ024-271200-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
452 AM MST MON AUG 26 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST-CENTRAL ARIZONA.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. THE
PRIMARY WEATHER HAZARD IS LOCALLY HEAVY RAIN THAT COULD LEAD TO
LOCALIZED FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

MOISTURE WILL BE DECREASING SLIGHTLY TUESDAY AND WEDNESDAY...THOUGH
REMAIN HIGH ENOUGH TO SUPPORT THE CHANCE FOR AFTERNOON AND EVENING
THUNDERSTORMS THROUGH THE END OF THE WEEK. THE PRIMARY WEATHER
HAZARDS WILL BE GUSTY WINDS IN EXCESS OF 40 MPH...DEADLY
LIGHTNING...LOCALLY HEAVY RAIN LEADING TO FLOODING OF WASHES AND LOW
LYING AREAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

In the hours before

Local storm report, Aug 26, 6:19 PM MST, 2 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
619 PM MST MON AUG 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0618 PM     DUST STORM       1 SE AHWATUKEE          33.31N 111.99W
08/26/2013                   MARICOPA           AZ   TRAINED SPOTTER

            VISIBILITY ONE QUARTER MILE

&&

EVENT NUMBER PSR1300148

MB

Local storm report, Aug 26, 6:28 PM MST, 2 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
628 PM MST MON AUG 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0627 PM     TSTM WND GST     4 SSE TUMBLEWEED PARK   33.22N 111.80W
08/26/2013  M62 MPH          MARICOPA           AZ   TRAINED SPOTTER

&&

EVENT NUMBER PSR1300149

MB

Local storm report, Aug 26, 6:35 PM MST, 2 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
635 PM MST MON AUG 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0634 PM     HAIL             4 SSE TUMBLEWEED PARK   33.22N 111.80W
08/26/2013  E0.25 INCH       MARICOPA           AZ   TRAINED SPOTTER

            HAIL COVERING THE GROUND.

&&

EVENT NUMBER PSR1300150

MB

Local storm report, Aug 26, 7:24 PM MST, 1 hour 47 minutes before

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Local storm report, Aug 26, 8:13 PM MST, 58 minutes before

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Local storm report, Aug 26, 8:44 PM MST, 27 minutes before

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The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 26, 5:01 PM MST	Blowing Dust Advisory	PSR		119 min
Aug 26, 5:10 PM MST	Areal Flood Advisory	PSR	Gila, Maricopa	110 min
Aug 26, 5:12 PM MST	Dust Storm Warning	PSR		2 hr
Aug 26, 5:21 PM MST	Special Weather Statement	PSR	Pinal	39 min
Aug 26, 5:26 PM MST	Severe Thunderstorm Warning	PSR	Pinal	19 min
Aug 26, 5:47 PM MST	Severe Thunderstorm Warning	PSR	Pinal	58 min
Aug 26, 5:54 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	111 min
Aug 26, 6:10 PM MST	Flash Flood Warning	PSR	Pinal	2 hr
Aug 26, 6:21 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	24 min
Aug 26, 6:35 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	25 min
Aug 26, 6:36 PM MST	Flash Flood Warning	PSR	Maricopa	114 min
Aug 26, 6:55 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	110 min
Aug 26, 7:08 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	37 min
Aug 26, 7:31 PM MST	Areal Flood Advisory	PSR	Maricopa	119 min
Aug 26, 8:26 PM MST	Areal Flood Advisory	PSR	Maricopa	109 min
Aug 26, 9:16 PM MST	Areal Flood Advisory	PSR	La Paz, Maricopa	119 min
Aug 26, 10:45 PM MST	Areal Flood Advisory	PSR	Maricopa	2 hr
Aug 27, 1:59 PM MST	Special Weather Statement	PSR		46 min
Aug 27, 2:14 PM MST	Areal Flood Advisory	PSR	Maricopa	2 hr
Aug 27, 2:17 PM MST	Special Weather Statement	PSR	Pinal	43 min
Aug 27, 2:50 PM MST	Special Weather Statement	PSR		40 min
Aug 27, 2:58 PM MST	Special Weather Statement	PSR	Pinal	47 min
Aug 27, 4:18 PM MST	Severe Thunderstorm Warning	PSR	Pinal	57 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2013 Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.