Alert archive / Arizona / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 13, NWS Tucson, AZ

July 14, 2007Graham County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 14, 2007, 7:13 PM MST for Graham County, Arizona. It was in force for 38 min. 1 report 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
Jul 14, 2007, 7:13 PM MST (02:13 UTC)
Expired
Jul 14, 2007, 7:51 PM MST
In force
38 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Graham County, AZ

The radar

The Tucson radar (KEMX), 143 km from the middle of the area, began a volume at 02:14 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.

What was reported inside it

TimeReportWhereRemark
Jul 14, 7:30 PM MSTTSTM WND DMGSafford, AZ2 POWER POLES DOWNED...1 SNAPPED IN HALF

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

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.2 hours before the alert went out and 142 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-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 2007-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 114 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 2007-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
114 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
2132 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KTWC 150214
SVRTWC
AZC009-150300-
/O.NEW.KTWC.SV.W.0013.070715T0213Z-070715T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
713 PM MST SAT JUL 14 2007

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL GRAHAM COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF SAFFORD...

* UNTIL 800 PM MST

* AT 706 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES EAST OF SAFFORD...AND MOVING WEST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SOLOMON...THATCHER...SWIFT TRAIL JUNCTION AND JUNCTION OF HIGHWAYS
  191 AND 266.

LAT...LON 3281 10938 3302 10955 3300 10972 3299 10982
      3283 10979 3254 10970

$$

WEATHER.GOV/TUCSON
BF
2 follow-up statements
000 
WWUS55 KTWC 150239
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
739 PM MST SAT JUL 14 2007

AZC009-150300-
/O.CON.KTWC.SV.W.0013.000000T0000Z-070715T0300Z/
GRAHAM AZ-
739 PM MST SAT JUL 14 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MST
FOR CENTRAL GRAHAM COUNTY...

AT 731 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR SOLOMON...OR ABOUT NEAR SAFFORD...MOVING WEST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
JUNCTION OF HIGHWAYS 191 AND 266...SWIFT TRAIL JUNCTION AND THATCHER.

LAT...LON 3281 10938 3302 10955 3300 10972 3299 10982
      3283 10979 3254 10970

$$

BF
000 
WWUS55 KTWC 150251
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
750 PM MST SAT JUL 14 2007

AZC009-150300-
/O.CAN.KTWC.SV.W.0013.000000T0000Z-070715T0300Z/
GRAHAM AZ-
750 PM MST SAT JUL 14 2007

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GRAHAM COUNTY IS
CANCELLED...

AT 750 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
WEAKENING THUNDERSTORMS ACROSS CENTRAL GRAHAM COUNTY. THUS THE 
SEVERE THUNDERSTORM WARNING PREVIOUSLY IN EFFECT FOR CENTRAL GRAHAM 
COUNTY INCLUDING THE CITY OF SAFFORD HAS BEEN CANCELLED.

HOWEVER...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM MST 
FOR EAST CENTRAL GRAHAM COUNTY INCLUDING THE CITY OF SAFFORD.

LAT...LON 3281 10938 3302 10955 3300 10972 3299 10982
      3283 10979 3254 10970

$$

BF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 6:29 PM MSTSevere Thunderstorm WarningTWCGraham, Greenlee31 min
Jul 14, 7:20 PM MSTFlash Flood WarningTWCGraham, Greenlee2 hr
Jul 15, 12:36 PM MSTSevere Thunderstorm WarningTWCGreenlee39 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2007Every severe thunderstorm warning in 2007

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.