Alert archive / Arizona / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 8, NWS Tucson, AZ

June 26, 2015Graham County, Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 26, 2015, 5:34 PM MST for Graham County, Pinal County, Arizona. It was in force for 41 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 26, 2015, 5:34 PM MST (00:34 UTC)
Expired: Jun 26, 2015, 6:15 PM MST
In force: 41 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

Counties Graham County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 118 km from the middle of the area, began a volume at 00:35 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.

What was reported inside it

Time	Report	Where	Remark
Jun 26, 5:50 PM MST	TSTM WND GST 50	Peridot, AZ	SEVERAL E50 MPH WIND GUSTS. POWER OUTAGE.
Jun 26, 5:50 PM MST	NON-TSTM WND GST 50	Peridot, AZ	SEVERAL E50 MPH WIND GUSTS. POWER OUTAGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 nearest sounding before it

Tuscon, AZ (KDMA), launched 00:00Z, 0.6 hours before the alert went out and 134 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: 222 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 3263 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

270 
WUUS55 KTWC 270034
SVRTWC
AZC009-021-270115-
/O.NEW.KTWC.SV.W.0008.150627T0034Z-150627T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
534 PM MST FRI JUN 26 2015

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN PINAL COUNTY IN SOUTHEASTERN ARIZONA...
  WEST CENTRAL GRAHAM COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 615 PM MST

* AT 533 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED NEAR SAN CARLOS...AND MOVING SOUTHWEST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  THE TOWN OF SAN CARLOS AND ADJACENT AREAS INCLUDING SAN CARLOS 
  RESERVOIR AND PERIDOT. 

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3343 11029 3333 11019 3312 11048 3317 11053
      3319 11050 3318 11046 3320 11046 3320 11040
      3324 11044 3329 11046 3333 11044 3336 11045
      3340 11041 3341 11038 3340 11036 3343 11034
TIME...MOT...LOC 0033Z 049DEG 19KT 3339 11036 

$$

HV

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 Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 1:40 PM MST, 3 hours 54 minutes earlier.

Area forecast discussion, Jun 26, 1:40 PM MST, 3 hours 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
140 PM MST FRI JUN 26 2015

.SYNOPSIS...THUNDERSTORM CHANCES WILL CONTINUE INTO NEXT WEEK AS
MOISTURE INCREASES ACROSS THE AREA. HEAVIER RAINFALL SHOULD OCCUR
ACROSS VALLEY LOCATIONS...AND DAYTIME TEMPERATURES WILL TREND CLOSER
TO NORMAL BY EARLY NEXT WEEK.

&&

.DISCUSSION...CONVECTION HAS BEEN A LITTLE BIT SLOWER TO DEVELOP
TODAY COMPARED TO THE PAST COUPLE OF DAYS BUT WE ARE SEEING SHOWERS
AND THUNDERSTORMS DEVELOP INITIALLY ACROSS THE HIGHER TERRAIN OF
SOUTHEAST ARIZONA AND THE WHITE MOUNTAINS OF GRAHAM AND NORTHERN
GREENLEE COUNTY INTO THE GILA MOUNTAINS OF NEW MEXICO. EXPECT
COVERAGE OF SHOWERS AND THUNDERSTORMS TO RAMP UP THIS AFTERNOON AS
THE STORMS PUSH TO THE WEST TO SOUTHWEST AT ABOUT 10 TO 15 MPH.
CONVECTIVE PARAMETERS REMAIN FAVORABLE WITH ABOUT 1000-1500 J/KG OF
MLCAPE AND ABOUT 1.3 INCHES OF PWAT. RESIDUAL VALLEY CIN WILL LIKELY
BE OVERCOME DUE TO OUTFLOW BOUNDARY INTERACTION LATER THIS
AFTERNOON..ESPECIALLY FROM TUCSON EASTWARD. AS MENTIONED IN THE
MORNING DISCUSSION...HAVE INCREASED THE POPS A BIT IN THE TUCSON
AREA FOR LATE THIS AFTERNOON AND EARLY THIS EVENING AS THE STORMS
WILL TRY TO PUSH IN FROM THE EAST. REMAIN CONCERNED ABOUT THE
BLOWING DUST THREAT TO THE NORTH AND WEST OF TUCSON DUE TO OUTFLOW
PUSHING NORTH AND WEST THIS EVENING.

THE UPPER AIR PATTERN FOR THE NEXT WEEK OR SO LOOKS FAIRLY SIMILAR
WITH THE UPPER HIGH PARKED OVER THE GREAT BASIN AND SUSTAINED
EASTERLY FLOW ACROSS SOUTHEAST ARIZONA. THIS IS A FAVORABLE MONSOON
PATTERN FOR US...ESPECIALLY FOR LATE JUNE. FOR SATURDAY...SHOWERS
AND STORMS WILL LIKELY TRY TO PUSH FARTHER WEST INTO THE CENTRAL
DESERTS AND LOOKS TO BE A POTENTIAL GREATER DUST THREAT THAN TODAY.
WE HAVE GONE AHEAD AND ADDED AREAS OF BLOWING DUST NORTH AND WEST OF
TUCSON INTO THE FORECAST SATURDAY EVENING.

WE ARE NOT SEEING ANY WELL DEFINED DISTURBANCES IN THE EXTENDED
FORECAST TO REALLY HANG OUR HAT ONTO. THUS...EXPECT WEAK SMALLER
SCALE DISTURBANCES THAT THE MODELS WILL HAVE A HARD TIME PICKING UP
ON TO LARGELY DRIVE OUR CONVECTIVE ACTIVITY AND DETERMINE WHICH DAYS
ARE MORE ACTIVE.

&&

.AVIATION...VALID THRU 28/00Z.
EXPECT ISOLD-SCTD TSRA/-SHRA MAINLY E AND S OF KTUS THRU 27/06Z WITH
SCT-BKN080 BKN-SCT120.  BRIEF WIND GUSTS OF 40-50 KTS SHOULD
ACCOMPANY THE STRONGER TSRA THIS AFTERNOON.  OTHERWISE...SURFACE
WIND BE LESS THAN 10 KTS.  TSRA/SHRA DIMINISHING AFT 27/06Z AND
BECOMING SCT080 SCT-BKN120.  CONVECTION REDEVELOPING AFTER 27/18Z.
AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...ADEQUATE MOISTURE WILL RESULT IN DAILY THUNDERSTORM
ACTIVITY INTO NEXT WEEK.  INITIAL THUNDERSTORM HAZARDS WILL BE
STRONG GUSTY OUTFLOWS AND DRY LIGHTNING UNTIL MOISTURE BECOMES MORE
ENTRENCHED THIS WEEKEND.  WIND GUSTS OF 35-45 MPH WILL BE FAIRLY
COMMON WITH THE POTENTIAL FOR THE STRONGEST AFTERNOON AND EARLY
EVENING STORMS TO PRODUCE WINDS IN EXCESS OF 50 MPH.  OTHERWISE
SURFACE WINDS WILL BE GENERALLY BE LIGHT.  CERNIGLIA

&&

.TWC WATCHES/WARNINGS/ADVISORIES...NONE.

&&

GL

VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON

In the hours before

Special weather statement, Jun 26, 2:28 PM MST, 3 hours 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
228 PM MST FRI JUN 26 2015

AZZ503-513-262215-
DRAGOON/MULE/HUACHUCA AND SANTA RITA MOUNTAINS INCLUDING
BISBEE/CANELO HILLS/MADERA CANYON AZ-
UPPER SANTA CRUZ RIVER AND ALTAR VALLEYS INCLUDING NOGALES AZ-
228 PM MST FRI JUN 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SANTA CRUZ COUNTY
UNTIL 315 PM MST...

AT 226 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
KINO SPRINGS...MOVING SOUTHWEST AT 5 MPH.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM. A SHORT PERIOD OF VERY HEAVY RAIN MAY BE POSSIBLE AS WELL.

LOCATIONS IMPACTED INCLUDE...
NOGALES...KINO SPRINGS AND LOCHIEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3134 11109 3155 11069 3137 11054 3133 11060
      3133 11108
TIME...MOT...LOC 2126Z 055DEG 5KT 3141 11071

CERNIGLIA

Special weather statement, Jun 26, 3:12 PM MST, 2 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
312 PM MST FRI JUN 26 2015

AZZ508-512-262300-
CHIRICAHUA MOUNTAINS INCLUDING CHIRICAHUA NATIONAL MONUMENT AZ-
EASTERN COCHISE COUNTY BELOW 5000 FEET INCLUDING DOUGLAS/WILLCOX AZ-
312 PM MST FRI JUN 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN COCHISE COUNTY UNTIL
400 PM MST...

AT 311 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES NORTHEAST OF DOUGLAS...MOVING WEST-SOUTHWEST AT 10 TO 15 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DOUGLAS...PIRTLEVILLE AND BISBEE-DOUGLAS AIRPORT.

LAT...LON 3146 10967 3154 10924 3133 10922 3134 10967
TIME...MOT...LOC 2211Z 071DEG 13KT 3142 10938

CERNIGLIA

Special weather statement, Jun 26, 3:55 PM MST, 1 hour 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
355 PM MST FRI JUN 26 2015

AZZ503-262345-
UPPER SANTA CRUZ RIVER AND ALTAR VALLEYS INCLUDING NOGALES-
355 PM MST FRI JUN 26 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN PIMA AND
SOUTHWESTERN SANTA CRUZ COUNTIES...

AT 353 PM MST...A STRONG THUNDERSTORM WAS NEAR PENA BLANCA LAKE...
MOVING WEST AT 10 MPH.

WIND GUSTS UP TO 50 MPH AND HEAVY RAIN ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
RIO RICO NORTHWEST...RIO RICO SOUTHWEST...PENA BLANCA LAKE...
ARIVACA...ARIVACA LAKE AND RUBY.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3152 11102 3134 11107 3145 11143 3164 11132
TIME...MOT...LOC 2253Z 100DEG 10KT 3145 11114

KD

Special weather statement, Jun 26, 4:11 PM MST, 1 hour 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
411 PM MST FRI JUN 26 2015

AZZ506>509-511-270000-
UPPER SAN PEDRO RIVER VALLEY INCLUDING SIERRA VISTA/BENSON AZ-
SOUTHEAST PINAL COUNTY INCLUDING KEARNY/MAMMOTH/ORACLE AZ-
GALIURO AND PINALENO MOUNTAINS INCLUDING MOUNT GRAHAM AZ-
EASTERN COCHISE COUNTY BELOW 5000 FEET INCLUDING DOUGLAS/WILLCOX AZ-
UPPER GILA RIVER AND ARAVAIPA VALLEYS INCLUDING CLIFTON/SAFFORD AZ-
411 PM MST FRI JUN 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COCHISE...
SOUTHEASTERN PINAL...NORTHEASTERN PIMA AND SOUTHWESTERN GRAHAM
COUNTIES UNTIL 500 PM MST...

AT 410 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
BONITA...MOVING SOUTHWEST AT 10 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM ALONG WITH
FREQUENT LIGHTING AND BRIEF HEAVY RAINFALL.

LOCATIONS IMPACTED INCLUDE...
SAN MANUEL...BONITA...REDINGTON...FORT GRANT AND CASCABEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3279 11003 3254 10988 3225 11043 3256 11066
TIME...MOT...LOC 2310Z 055DEG 6KT 3263 11003

CANTIN

Special weather statement, Jun 26, 4:47 PM MST, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
447 PM MST FRI JUN 26 2015

AZZ502-503-515-270030-
UPPER SANTA CRUZ RIVER AND ALTAR VALLEYS INCLUDING NOGALES AZ-
TOHONO O'ODHAM NATION INCLUDING SELLS AZ-
BABOQUIVARI MOUNTAINS INCLUDING KITT PEAK AZ-
447 PM MST FRI JUN 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL PIMA COUNTY UNTIL
530 PM MST...

AT 446 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
SASABE...MOVING WEST AT 25 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM ALONG WITH
BRIEF HEAVY RAINFALL WITH RATES NEAR ONE INCH PER HOUR.

LOCATIONS IMPACTED INCLUDE...
SAN MIGUEL...NEWFIELDS...CHOULIC AND SASABE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3158 11185 3172 11182 3159 11135 3144 11140
TIME...MOT...LOC 2346Z 084DEG 20KT 3149 11150

CARLAW

Special weather statement, Jun 26, 5:00 PM MST, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
500 PM MST FRI JUN 26 2015

AZZ504-506>509-511-513-514-270045-
UPPER SAN PEDRO RIVER VALLEY INCLUDING SIERRA VISTA/BENSON AZ-
DRAGOON/MULE/HUACHUCA AND SANTA RITA MOUNTAINS INCLUDING
BISBEE/CANELO HILLS/MADERA CANYON AZ-
SOUTHEAST PINAL COUNTY INCLUDING KEARNY/MAMMOTH/ORACLE AZ-
SANTA CATALINA AND RINCON MOUNTAINS INCLUDING MOUNT
LEMMON/SUMMERHAVEN AZ-
GALIURO AND PINALENO MOUNTAINS INCLUDING MOUNT GRAHAM AZ-
EASTERN COCHISE COUNTY BELOW 5000 FEET INCLUDING DOUGLAS/WILLCOX AZ-
UPPER GILA RIVER AND ARAVAIPA VALLEYS INCLUDING CLIFTON/SAFFORD AZ-
TUCSON METRO AREA INCLUDING TUCSON/GREEN VALLEY/MARANA/VAIL AZ-
500 PM MST FRI JUN 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COCHISE...
SOUTHEASTERN PINAL...NORTHEASTERN PIMA...SOUTHWESTERN GRAHAM AND
NORTHEASTERN SANTA CRUZ COUNTIES UNTIL 545 PM MST...

AT 459 PM MST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF
REDINGTON TO 7 MILES NORTH OF TOMBSTONE...AND MOVING SOUTHWEST AT 25
MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS ALONG
WITH BRIEF HEAVY RAINFALL WITH RATES APPROACHING ONE INCH PER HOUR.

LOCATIONS IMPACTED INCLUDE...
BENSON...TANQUE VERDE...SAN MANUEL...TOMBSTONE...REDINGTON...MOUNT
LEMMON/SUMMERHAVEN...CASCABEL...I-10 AND TEXAS CANYON...SEVEN
FALLS...SONOITA...ST. DAVID...FAIRBANK...SAINT DAVID...KARTCHNER
CAVERNS STATE PARK...DRAGOON...MULESHOE RANCH PRESERVE...WHETSTONE...
MESCAL...ELGIN AND CATALINA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS 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 3248 11091 3212 11064 3166 11066 3172 10989
      3233 11002 3275 11023
TIME...MOT...LOC 2359Z 061DEG 20KT 3260 11037 3183 11006

CARLAW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 5:00 PM MST	Special Weather Statement	TWC		45 min
Jun 26, 5:44 PM MST	Special Weather Statement	TWC		46 min
Jun 26, 6:32 PM MST	Special Weather Statement	TWC	Santa Cruz	28 min
Jun 27, 4:20 AM MST	Blowing Dust Advisory	TWC	Pima, Pinal	16 hr
Jun 27, 2:03 PM MST	Special Weather Statement	TWC	Greenlee	42 min
Jun 27, 2:07 PM MST	Special Weather Statement	TWC	Cochise	38 min
Jun 27, 2:41 PM MST	Special Weather Statement	TWC		49 min
Jun 27, 3:11 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	49 min
Jun 27, 3:30 PM MST	Special Weather Statement	TWC	Graham	45 min
Jun 27, 3:50 PM MST	Severe Thunderstorm Warning	TWC	Pinal	40 min
Jun 27, 4:49 PM MST	Special Weather Statement	TWC	Pima	26 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2015 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.