Alert archive / Arizona / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 13, NWS Phoenix, AZ

July 23, 2007Yuma County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 23, 2007, 6:27 PM MST for Yuma County, Arizona. It was in force for 48 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
Jul 23, 2007, 6:27 PM MST (01:27 UTC)
Expired
Jul 23, 2007, 7:15 PM MST
In force
48 min
Issued by
NWS Phoenix, AZ
Area
Counties, with a storm outline in the text

County Yuma County, AZ

The radar

The Yuma radar (KYUX), 89 km from the middle of the area, began a volume at 01:29 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, 1.5 hours before the alert went out and 184 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, Phoenix, AZ at 00:00Z on 2007-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 596 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 00:00Z on 2007-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
596 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1768 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
48 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 KPSR 240129
SVRPSR
AZC027-240215-
/O.NEW.KPSR.SV.W.0013.070724T0127Z-070724T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
627 PM MST MON JUL 23 2007

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL YUMA COUNTY IN SOUTHWEST ARIZONA...INCLUDING PORTIONS 
  OF INTERSTATE 8 NEAR THE TOWN OF MOHAWK

* UNTIL 715 PM MST

* AT 621 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN 
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR MOHAWK ALONG 
  INTERSTATE 8...OR ABOUT 44 MILES EAST OF FORTUNA FOOTHILLS. THIS 
  STORM WAS MOVING NORTH AT 5 MPH. HEAVY RAIN IS ALSO LIKELY.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

LAT...LON 3259 11382 3265 11353 3284 11360 3276 11388

$$

HV
2 follow-up statements
000 
WWUS55 KPSR 240200
SVSPSR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
658 PM MST MON JUL 23 2007

AZC027-240215-
/O.CON.KPSR.SV.W.0013.000000T0000Z-070724T0215Z/
YUMA AZ-
658 PM MST MON JUL 23 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MST 
FOR CENTRAL YUMA COUNTY INCLUDING THE CITIES TACNA AND MOHAWK...

AT 651 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN 
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED BETWEEN THE CITIES OF 
TACNA AND MOHAWK ALONG INTERSTATE 8...OR ABOUT 50 MILES EAST OF THE 
CITY OF YUMA. 

THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.

LAT...LON 3259 11382 3265 11353 3284 11360 3276 11388

$$
 
HV
000 
WWUS55 KPSR 240217
SVSPSR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
715 PM MST MON JUL 23 2007

AZC027-240225-
/O.EXP.KPSR.SV.W.0013.000000T0000Z-070724T0215Z/
YUMA AZ-
715 PM MST MON JUL 23 2007

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL YUMA COUNTY...IN THE
AREA NEAR TACNA AND MOHAWK ALONG INTERSTATE 8 EXPIRED AT 715 PM 
MST...

VERY LARGE THUNDERSTORMS WITH HEAVY RAIN DEVELOPED NEAR THE TOWNS OF 
TACNA AND MOHAWK BETWEEN 630 PM AND 714 PM...HOWEVER THERE WERE NO 
REPORTS OF DAMAGE OR FLOODING AS OF 715 PM.

AT 715 PM SEVERE THUNDERSTORMS HAD DIMINISHED...HOWEVER A CHANCE OF 
SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH MIDNIGHT.

LAT...LON 3259 11382 3265 11353 3284 11360 3276 11388

$$

HV

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 5:56 PM MSTFlash Flood WarningPSRMaricopa94 min
Jul 23, 6:03 PM MSTSevere Thunderstorm WarningPSRMaricopa64 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.