Alert archive / Arizona / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 7, NWS Phoenix, AZ

June 28, 2015Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jun 28, 2015, 5:38 PM MST for Maricopa County, Arizona. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 28, 2015, 5:38 PM MST (00:38 UTC)
Expired
Jun 28, 2015, 6:30 PM MST
In force
52 min
Issued by
NWS Phoenix, AZ
Area
Storm-based polygon

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 124 km from the middle of the area, began a volume at 00:41 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The text

As transmitted, in the capitals the NWS used until 2016.

557 
WUUS55 KPSR 290038
SVRPSR
AZC013-290130-
/O.NEW.KPSR.SV.W.0007.150629T0038Z-150629T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
ISSUED BY NATIONAL WEATHER SERVICE TUCSON AZ
538 PM MST SUN JUN 28 2015

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...

* UNTIL 630 PM MST

* AT 537 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR GILA BEND AUXILIARY
  FIELD...AND MOVING WEST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GILA BEND...SENTINEL AND GILA BEND AUXILIARY FIELD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

LAT...LON 3305 11266 3251 11247 3252 11332 3304 11332
TIME...MOT...LOC 0037Z 074DEG 13KT 3284 11271 

$$

DEWEY
1 follow-up statement
539 
WWUS55 KPSR 290126
SVSPSR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
ISSUED BY NATIONAL WEATHER SERVICE TUCSON AZ
626 PM MST SUN JUN 28 2015

AZC013-290135-
/O.EXP.KPSR.SV.W.0007.000000T0000Z-150629T0130Z/
MARICOPA AZ-
626 PM MST SUN JUN 28 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MARICOPA COUNTY
WILL EXPIRE AT 630 PM MST...
        
THE STORM WHICH PROMPTED THE WARNING ACROSS THE GILA BEND AREA HAS 
MOVED WEST OUT OF THE AREA. THEREFORE THE WARNING WILL BE ALLOWED TO 
EXPIRE. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM AS IT CONTINUES TO MOVE WESTWARD INTO YUMA COUNTY.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR 
YUMA COUNTY INCLUDING DATELAND...MOHAWK...AND LOCATIONS ALONG 
INTERSTATE 8.

LAT...LON 3305 11266 3251 11247 3252 11332 3304 11332
TIME...MOT...LOC 0124Z 074DEG 13KT 3284 11271 

$$

DEWEY

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 Jun 28, 1:51 PM MST, 3 hours 47 minutes earlier.

Area forecast discussion, Jun 28, 1:51 PM MST, 3 hours 47 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
151 PM MST SUN JUN 28 2015

.SYNOPSIS...
THROUGH THIS WEEK...PERIODIC SHOWERS AND THUNDERSTORMS WILL BE
COMMON ACROSS THE MOUNTAINS OF SOUTHERN AND EASTERN ARIZONA. SEVERAL
EVENINGS WILL CARRY A SLIGHT CHANCE FOR THESE STORMS TO MOVE INTO
THE POPULATED LOWER DESERT AREAS. THE MOST LIKELY OUTCOME IN THOSE
AREAS WILL BE GUSTY WINDS AND SOME BLOWING DUST...BUT VERY LOCALIZED
BRIEF HEAVY RAIN WILL ALSO BE POSSIBLE. AFTERNOON TEMPERATURES WILL
REMAIN SLIGHTLY ABOVE NORMAL THOUGH BELOW THE EXCESSIVE LEVELS
EXPERIENCED THE PAST COUPLE WEEKS.

&&

.DISCUSSION...
AFTER A CLEAR MORNING ACROSS ARIZONA...CONVECTION IS QUICKLY
BLOSSOMING EARLY THIS AFTERNOON. THANKS TO THE INCREASED SUNSHINE
TEMPERATURES ARE RUNNING SEVERAL DEGREES ABOVE SAME TIME
YESTERDAY AND DEW POINTS DOWN JUST A LITTLE BIT. 28.12Z KTUS SOUNDING
STILL HAD VERY HIGH PWAT VALUES...ABOUT 1.4 IN AND NEAR RECORD HIGHS
FOR LATE JUNE. SOUTHEAST CALIFORNIA IS CAUGHT IN THE INCREASINGLY
MERIDIONAL FLOW BETWEEN THE GREAT BASIN HIGH AND AN OFF-SHORE LOW AND
THIS HAS HELPED KEEP TEMPERATURES THERE DOWN SEVERAL DEGREES.

FOR THE REST OF TODAY...HI-RES MODELS SHOWED MUCH MORE VARIABILITY IN
THEIR CONVECTIVE DEPICTION THOUGH OVERALL THERE WAS LESS ENTHUSIASM
FOR STRONG OUTFLOW WINDS INTO THE METRO AREA. THIS ISN/T TOO
SURPRISING GIVEN THE EXPECTED SLIGHT DECREASE IN INSTABILITY. THERE
WAS GENERAL AGREEMENT THAT WHAT OUTFLOWS DO FORM WILL MOVE IN
EARLIER...IN THE 3-6PM WINDOW. GIVEN THE QUICKLY THINNING BOUNDARY
LAYER MOISTURE THIS AFTERNOON...IT LOOKS LESS LIKELY THAT THE PHX
METRO AREA WILL SEE CONVECTION OF SUBSTANCE WITH ANY OUTFLOW /NOT TO
SAY A COUPLE OF SHOWERS POPPING OFF WONT HAPPEN/.

THE EASTERLY FLOW DOES SEEM AS IF IT/LL PUSH MORE STORMS ACROSS
SOUTHERN ARIZONA AND ALSO NORTHERN ARIZONA...WHICH MAY CAUSE OUTFLOWS
TO COLLIDE OVER WESTERN MARICOPA...YUMA...AND LA PAZ COUNTIES. THAT
AREA MAY SEE MORE SHOWERS/STORMS THIS EVENING. FURTHER WEST...BEYOND
PERHAPS A FEW SHOWERS EXPECTING IT TO REMAIN DRY UNDER THE MID/UPPER
LEVEL CLOUD CANOPY.

GREAT BASIN HIGH NOW APPEARS IT WILL BIFURCATE...WITH A CHUNK OF
ANOMALOUS TEMPS/HEIGHTS HEADING NORTH TOWARD ALASKA AND THE
REMAINDER SETTLING A BIT FURTHER SOUTH. THAT MEANS OVERALL WHAT WE
SEE TODAY IS GENERALLY WHAT WE/LL GET. REALLY HARD TO PICK OUT ANY
INDIVIDUAL DAY AS BEING MORE ACTIVE AT THIS POINT. CONCEIVABLE THAT
GILA...PINAL AND FAR EASTERN MARICOPA COUNTIES GET DAILY STORMS WHILE
PHOENIX WEST GETS LIMITED ACTIVITY /BESIDES SOME DUSTY WINDS/.
TEMPERATURES WILL NOT MODERATE MUCH AND REMAIN JUST ABOVE SEASONAL
NORMS.

&&

.AVIATION...
SOUTH-CENTRAL ARIZONA INCLUDING KPHX...KIWA...AND KSDL...
THUNDERSTORMS CURRENTLY ACROSS EASTERN ARIZONA WILL GRADUALLY MOVE
WEST THROUGH THE AFTERNOON AND EVENING. WHILE TS IS NOT EXPLICITLY
EXPECTED OVER KPHX...KSDL/KIWA COULD BE CLIPPED. ALL TERMINALS WILL
LIKELY BE IMPACTED BY OUTFLOW WINDS IN THE 22-02Z WINDOW.

SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA INCLUDING KIPL AND KBLH...
MID/UPPER LEVEL CLOUDS WILL NOT MOVE A GREAT DEAL OVER THE NEXT 24
HOURS. A FEW BRIEF SHOWERS WILL BE POSSIBLE BUT THE THREAT FOR TS IS
LOW.

AVIATION DISCUSSION NOT UPDATED FOR AMENDED TAFS.

&&

.FIRE WEATHER...
TUESDAY THROUGH SATURDAY...APPEARS WE ARE GOING TO BE IN A STAGNANT
PATTERN FOR MUCH OF THE WEEK...CHARACTERIZED BY SLIGHTLY ABOVE
NORMAL TEMPERATURES...DAILY MOUNTAIN THUNDERSTORMS MOVING FROM EAST
TO WEST...AND LOW DAYTIME HUMIDITY VALUES WITH GOOD OVERNIGHT
RECOVERY.

&&

.SPOTTER INFORMATION STATEMENT...
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS
ACCORDING TO STANDARD OPERATING PROCEDURES.

&&

.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...BLOWING DUST ADVISORY UNTIL 5 PM THIS AFTERNOON FOR AZZ028.
CA...NONE.

&&

VISIT US ON FACEBOOK...TWITTER...AND AT WEATHER.GOV/PHOENIX

DISCUSSION...INIGUEZ
AVIATION...INIGUEZ
FIRE WEATHER...INIGUEZ

In the hours before

Special weather statement, Jun 28, 4:48 PM MST, 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
ISSUED BY NATIONAL WEATHER SERVICE TUCSON AZ
448 PM MST SUN JUN 28 2015

AZZ027-290030-
SOUTHWEST MARICOPA COUNTY AZ-
448 PM MST SUN JUN 28 2015

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHWESTERN MARICOPA COUNTY

UNTIL 530 PM MST

AT 446 PM MST...DOPPLER RADAR WAS TRACKING A GROUP OF STRONG
THUNDERSTORMS 12 MILES SOUTH OF GILA BEND AUXILIARY FIELD...MOVING
WEST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM AS WELL
AS REDUCED VISIBILITY IN BLOWING DUST.

LOCATIONS IMPACTED INCLUDE...
GILA BEND...ESTRELLA...BIG HORN...GILA BEND AUXILIARY FIELD...
FREEMAN...SENTINEL...BOSQUE AND SONORAN NATIONAL MONUMENT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3303 11221 3251 11221 3252 11331 3304 11332
TIME...MOT...LOC 2346Z 100DEG 22KT 3272 11278

DEWEY
Local storm report, Jun 28, 5:32 PM MST, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
ISSUED BY NATIONAL WEATHER SERVICE TUCSON AZ
532 PM MST SUN JUN 28 2015

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

0518 PM     TSTM WND GST     36 NNE AJO              32.89N 112.72W
06/28/2015  M64 MPH          MARICOPA           AZ   ASOS

            KGXF ASOS GUST TO 64MPH. 3/4 MILE BD

&&

EVENT NUMBER PSR1500013

MP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 6:16 PM MSTSevere Thunderstorm WarningPSRYuma44 min
Jun 28, 7:05 PM MSTBlowing Dust AdvisoryPSR55 min
Jun 28, 7:25 PM MSTSpecial Weather StatementPSRLa Paz50 min
Jun 28, 8:11 PM MSTSpecial Weather StatementPSRPinal49 min
Jun 28, 8:19 PM MSTSpecial Weather StatementPSRLa Paz71 min
Jun 28, 9:29 PM MSTSpecial Weather StatementPSR61 min
Jun 29, 4:10 PM MSTSpecial Weather StatementPSR50 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2015Every severe thunderstorm warning in 2015

Sources

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