Alert archive / Arizona / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 9, NWS Tucson, AZ

July 10, 2002Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 10, 2002, 2:26 PM MST for Pinal County, Arizona. It was in force for 34 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 10, 2002, 2:26 PM MST (21:26 UTC)
Expired
Jul 10, 2002, 3:00 PM MST
In force
34 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 64 km from the middle of the area, began a volume at 21:28 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 12:00Z, 9.4 hours before the alert went out and 96 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 12:00Z on 2002-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 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, Phoenix, AZ at 12:00Z on 2002-07-10The 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
67 J/kg
Mixed-layer CIN
-479 J/kg
Mixed-layer LCL
2618 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
45 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.

509 
WUUS55 KTWC 102126
SVRTWC
AZC021-102200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
226 PM MST WED JUL 10 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEAST PINAL COUNTY IN ARIZONA

* UNTIL 300 PM MST

* AT 217 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES WEST OF KEARNY...OR ABOUT 21 MILES EAST
  OF FLORENCE.  THE STORM WAS MOVING WEST AT 5 MPH.

DAMAGING WINDS OF 60 MPH OR GREATER CAN BE EXPECTED. MOTORISTS 
TRAVELLING ALONG HIGHWAY 177 BETWEEN HAYDEN AND KELVIN SHOULD BE 
PREPARED FOR VERY STRONG CROSS WINDS AND REDUCED VISIBILITIES IN 
BLOWING DUST. 

LAT...LON 3291 11102 3309 11086 3327 11107 3304 11125

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 5:05 PM MSTSevere Thunderstorm WarningTWCPima40 min
Jul 9, 5:16 PM MSTSevere Thunderstorm WarningTWCPinal29 min
Jul 9, 7:11 PM MSTSevere Thunderstorm WarningTWCPinal34 min
Jul 10, 2:57 PM MSTSevere Thunderstorm WarningTWCPima48 min
Jul 10, 3:20 PM MSTSevere Thunderstorm WarningTWCPima, Pinal40 min
Jul 10, 4:00 PM MSTSevere Thunderstorm WarningTWCPinal30 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2002Every severe thunderstorm warning in 2002

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.