Alert archive / Arizona / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 27, NWS Tucson, AZ

June 30, 2015Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 30, 2015, 8:27 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 43 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 30, 2015, 8:27 PM MST (03:27 UTC)
Expired: Jun 30, 2015, 9:10 PM MST
In force: 43 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

Counties Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 106 km from the middle of the area, began a volume at 03:31 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 nearest sounding before it

Tuscon, AZ (KDMA), launched 00:00Z, 3.5 hours before the alert went out and 84 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: 1402 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 2476 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

880 
WUUS55 KTWC 010327
SVRTWC
AZC019-023-010430-
/O.NEW.KTWC.SV.W.0027.150701T0327Z-150701T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
827 PM MST TUE JUN 30 2015

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL PIMA COUNTY IN SOUTHEASTERN ARIZONA...
  WESTERN SANTA CRUZ COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 930 PM MST

* AT 826 PM MST...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
  WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 6 MILES EAST OF KITT PEAK TO 6 MILES EAST OF
  JUNCTION OF HIGHWAY 286 AND ARIVACA ROAD...AND MOVING WEST AT 30
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  SELLS...KITT PEAK...SAN LUIS...SAN MIGUEL...CHOULIC...PAN TAK...SAN
  ISIDRO...COMOBABI...SANTA ROSA RANCH...TOPAWA...JUNCTION OF HIGHWAY
  286 AND ARIVACA ROAD...FRESNAL CANYON...NOLIC...ARTESA...ARIVACA...
  COWLIC...LITTLE TUCSON...BIG FIELDS...VAMORI AND SOUTH KOMELIK.

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.

&&

LAT...LON 3228 11205 3166 11206 3150 11127 3200 11133
TIME...MOT...LOC 0326Z 075DEG 25KT 3194 11148 3168 11139 

$$

MOLLERE

1 follow-up statement

054 
WWUS55 KTWC 010410
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
910 PM MST TUE JUN 30 2015

AZC019-023-010418-
/O.CAN.KTWC.SV.W.0027.000000T0000Z-150701T0430Z/
PIMA AZ-SANTA CRUZ AZ-
910 PM MST TUE JUN 30 2015

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PIMA AND WESTERN SANTA
CRUZ COUNTIES IS CANCELLED...
            
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER SMALL HAIL IS 
STILL POSSIBLE WITH THESE THUNDERSTORMS. A SPECIAL WEATHER STATEMENT 
HAS BEEN ISSUED FOR CENTRAL AND WESTERN PIMA COUNTIES FOR A 
CONTINUED THREAT OF SMALL TO MEDIUM SIZE HAIL BELOW SEVERE LIMITS.  

LAT...LON 3228 11205 3166 11206 3150 11127 3200 11133
TIME...MOT...LOC 0400Z 075DEG 25KT 3188 11175 3162 11166 

$$
MOLLERE

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 30, 2:30 PM MST, 5 hours 57 minutes earlier.

Area forecast discussion, Jun 30, 2:30 PM MST, 5 hours 57 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
230 PM MST TUE JUN 30 2015

.SYNOPSIS...EXPECT SCATTERED MAINLY AFTERNOON AND EVENING
THUNDERSTORMS INTO EARLY NEXT WEEK. SOME STORMS LATER TODAY AND THIS
EVENING WILL GENERATE STRONG WINDS...HAIL AND HEAVY RAIN. DAYTIME
TEMPERATURES WILL REMAIN CLOSE TO SEASONAL NORMALS INTO THIS HOLIDAY
WEEKEND.

&&

.DISCUSSION...STRONG EASTERLY FLOW WITH INVERTED IMPULSE WRAPPING IN
FROM WEST TEXAS KEYING ANOTHER SOLID CHANCE OF STORMS OVER THE NEXT
12 HOURS. 18Z SOUNDING REVEALED A RAPIDLY RECOVERING ATMOSPHERE FROM
THE OVERNIGHT CONVECTION. PRECIPITABLE WATER DOWN TO 1.3 INCHES WITH
A QUICK REWORK OF CONDITIONS BELOW H5. AS EXPECTED WE'VE HAD SOME
CONVECTIVE INHIBITION TO OVERCOME...JUST ENOUGH TO DELAY ONSET OF
CONVECTION AN EXTRA HOUR OR TWO. MODIFYING THE SOUNDING WE'RE
GETTING 1500 J/KG MUCAPE WITH CONTINUED ELEVATED EASTERLY FLOW ABOVE
750MB AND SOLID SHEAR FOR OUR AREA. OUTFLOWS FROM INITIAL MOUNTAIN
DEVELOPMENT SHOULD END UP WITH A FAVORABLE ATMOSPHERE FOR VALLEY
DEVELOPMENT BY LATE AFTERNOON. WET MICROBURST AND ORGANIZED OUTFLOW
CONCERNS WITH ISOLATED SEVERE WIND...HAIL...RELATIVELY BRIEF BUT
VERY HEAVY RAIN FROM 22Z TO 06Z. SPC MESOSCALE DISCUSSION 1251 WITH
WATCH PROBABILITY AT 40 PERCENT.

AFTER ANOTHER ROUND OF DEEP PROPAGATION INTO WESTERN DESERTS
OVERNIGHT...THE ORIENTATION OF LARGE SCALE FLOW STILL FAVORS SOLID
CONVECTION. HOWEVER THE WAKE OF THE EASTERLY IMPULSE SHOULD LEAVE
EASTERN AREAS...SUCH AS COCHISE COUNTY...UNDER SOME MID LEVEL
SUBSIDENCE WEDNESDAY.

FRIDAY THROUGH THE WEEKEND WILL SEE THE REORIENTATION OF THE RIDGE
AXIS FROM CHIHUAHUA THROUGH EASTERN BORDER AREAS AND THEN INTO UTAH.
A LONG SOUTHERLY FETCH INSTEAD OF EASTERLY. THESE PATTERNS TEND TO
EMPHASIZE HEAVIER RAINFALL AS WELL AS MORE WIDESPREAD CONVECTIVE
ORGANIZATION IMMEDIATELY UPSTREAM IN SONORA. A BUSY BUMPY MONSOON.

&&

.AVIATION...VALID THRU 02/00Z.
SCT TSRA/SHRA REDEVELOPING THIS AFTERNOON INTO EVENING HOURS. BRIEF
WIND GUSTS OF 4O-50 KTS WILL BE POSSIBLE WITH THE STRONGEST STORMS.
CLOUD DECKS WILL GENERALLY BE AT OR ABOVE 10K FT AGL AND SURFACE
WIND WILL BE LESS THAN 12 KTS OUTSIDE OF ANY TSRA...WITH BRIEF MVFR
CONDITIONS DIRECTLY ASSOCIATED WITH STORMS. AVIATION DISCUSSION NOT
UPDATED FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...ISOLATED TO SCATTERED THUNDERSTORMS WILL OCCUR
ACROSS SOUTHEAST ARIZONA ONCE AGAIN TODAY. ADEQUATE MOISTURE AND A
FAVORABLE FLOW PATTERN WILL CONTINUE TO PROVIDE A CHANCE OF MAINLY
AFTERNOON AND EVENING THUNDERSTORMS INTO THE UPCOMING HOLIDAY
WEEKEND WITH TEMPERATURES WITHIN A FEW DEGREES OF NORMAL.

&&

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

&&

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

MEYER/LADER

In the hours before

Local storm report, Jun 30, 7:27 PM MST, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
727 PM MST TUE JUN 30 2015

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

0710 PM     HAIL             1 WSW CORONA DE TUCSON  31.94N 110.78W
06/30/2015  M0.75 INCH       PIMA               AZ   TRAINED SPOTTER

            PENNY SIZED HAIL

&&

EVENT NUMBER TWC1500037

CERNIGLIA

Local storm report, Jun 30, 7:44 PM MST, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
744 PM MST TUE JUN 30 2015

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

0743 PM     TSTM WND DMG     SAHUARITA               31.96N 110.95W
06/30/2015                   PIMA               AZ   TWITTER

            POWER OUT TO NEARLY 1000 HOMES EAST OF I-19

&&

EVENT NUMBER TWC1500038

CERNIGLIA

Special weather statement, Jun 30, 7:55 PM MST, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
755 PM MST TUE JUN 30 2015

AZZ502-504>506-010330-
SOUTH CENTRAL PINAL COUNTY INCLUDING ELOY/PICACHO PEAK STATE PARK AZ-
SOUTHEAST PINAL COUNTY INCLUDING KEARNY/MAMMOTH/ORACLE AZ-
TUCSON METRO AREA INCLUDING TUCSON/GREEN VALLEY/MARANA/VAIL AZ-
TOHONO O'ODHAM NATION INCLUDING SELLS AZ-
755 PM MST TUE JUN 30 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL PINAL AND NORTH
CENTRAL PIMA COUNTIES UNTIL 830 PM MST...

AT 755 PM MST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR PICACHO TO 8 MILES
EAST OF RED ROCK TO TORTOLITA...AND MOVING SOUTHWEST AT 35 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
ORO VALLEY...MARANA...CASAS ADOBES...TORTOLITA...AVRA VALLEY...
FRIENDLY CORNERS...SILVER BELL...RED ROCK...PICTURE ROCKS...DOVE
MOUNTAIN...PICACHO PEAK AND SAGUARO NATIONAL PARK WEST.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MST FOR
SOUTHEASTERN ARIZONA.

LAT...LON 3255 11197 3238 11167 3215 11141 3237 11094
      3259 11116 3269 11153
TIME...MOT...LOC 0255Z 065DEG 29KT 3266 11147 3259 11118 3242 11102

CERNIGLIA

Local storm report, Jun 30, 8:07 PM MST, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
807 PM MST TUE JUN 30 2015

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

0555 PM     TSTM WND GST     8 WSW TUCSON            32.19N 111.07W
06/30/2015  M67 MPH          PIMA               AZ   TWITTER

            67 MPH WIND GUST MEASURED ATOP THE CASINO DEL SOL

&&

EVENT NUMBER TWC1500039

CERNIGLIA

Local storm report, Jun 30, 8:17 PM MST, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
817 PM MST TUE JUN 30 2015

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

0816 PM     HAIL             3 SSE SIERRA VISTA      31.51N 110.26W
06/30/2015  E0.75 INCH       COCHISE            AZ   TRAINED SPOTTER

            MARBLE SIZE HAIL

&&

EVENT NUMBER TWC1500040

CERNIGLIA

Local storm report, Jun 30, 8:23 PM MST, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON AZ
823 PM MST TUE JUN 30 2015

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

0822 PM     HAIL             4 SSE SIERRA VISTA      31.51N 110.27W
06/30/2015  M1.00 INCH       COCHISE            AZ   TRAINED SPOTTER

            SPOTER REPORTS QUARTER SIZED HAIL AND HEAVY RAIN

&&

EVENT NUMBER TWC1500041

RH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 5:01 PM MST	Special Weather Statement	TWC		44 min
Jun 30, 5:19 PM MST	Severe Thunderstorm Warning	TWC	Pima	41 min
Jun 30, 5:30 PM MST	Severe Thunderstorm Warning	TWC	Cochise	30 min
Jun 30, 5:54 PM MST	Severe Thunderstorm Warning	TWC	Pima	20 min
Jun 30, 6:02 PM MST	Areal Flood Advisory	TWC	Cochise, Santa Cruz	3 hr
Jun 30, 6:05 PM MST	Special Weather Statement	TWC	Santa Cruz	25 min
Jun 30, 6:17 PM MST	Special Weather Statement	TWC	Santa Cruz	43 min
Jun 30, 6:47 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	43 min
Jun 30, 6:51 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Jun 30, 7:01 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	44 min
Jun 30, 7:09 PM MST	Severe Thunderstorm Warning	TWC	Cochise	36 min
Jun 30, 7:27 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	63 min
Jun 30, 7:34 PM MST	Tornado Warning	TWC	Cochise	11 min
Jun 30, 7:49 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	26 min
Jun 30, 7:55 PM MST	Special Weather Statement	TWC	Pima	35 min
Jun 30, 8:21 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima, Santa Cruz	54 min
Jun 30, 8:44 PM MST	Areal Flood Advisory	TWC	Cochise, Pima, Santa Cruz	3 hr
Jun 30, 9:06 PM MST	Special Weather Statement	TWC		39 min
Jun 30, 9:10 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	35 min
Jun 30, 9:49 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	56 min
Jun 30, 10:44 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	46 min
Jun 30, 11:31 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Jun 30, 11:36 PM MST	Special Weather Statement	TWC	Pima, Santa Cruz	39 min
Jul 1, 2:44 AM MST	Special Weather Statement	TWC		31 min
Jul 1, 12:43 PM MST	Special Weather Statement	TWC	Santa Cruz	47 min
Jul 1, 1:13 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	32 min
Jul 1, 1:53 PM MST	Severe Thunderstorm Warning	TWC	Pima	37 min
Jul 1, 2:41 PM MST	Flash Flood Warning	TWC	Santa Cruz	3 hr
Jul 1, 2:43 PM MST	Special Weather Statement	TWC		47 min
Jul 1, 2:56 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Jul 1, 3:28 PM MST	Special Weather Statement	TWC		47 min
Jul 1, 3:30 PM MST	Special Weather Statement	TWC		45 min
Jul 1, 4:27 PM MST	Areal Flood Advisory	TWC	Pima	108 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.