Alert archive / Arizona / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 7, NWS Tucson, AZ

July 9, 2002Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 9, 2002, 5:16 PM MST for Pinal County, Arizona. It was in force for 29 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 9, 2002, 5:16 PM MST (00:16 UTC)
Expired: Jul 9, 2002, 5:45 PM MST
In force: 29 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), 74 km from the middle of the area, began a volume at 00:17 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 9, 4:30 PM MST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 0.3 hours before the alert went out and 90 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: 404 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 2481 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

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

647 
WUUS55 KTWC 100016
SVRTWC
AZC021-100045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
515 PM MST TUE JUL 9 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 545 PM MST

* AT 512 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTHEAST OF KEARNY...OR ABOUT 19 MILES
  SOUTH OF GLOBE...MOVING SOUTHWEST AT 20 MPH.

THIS IS A DANGEROUS STORM. PREPARE FOR DAMAGING WINDS IN EXCESS OF 55
MPH...INTENSE RAIN AND HAIL IS LIKELY. MOTORISTS TRAVELING ALONG 
HIGHWAY 177 BETWEEN HAYDEN AND KELVIN SHOULD BE PREPARED FOR STRONG 
CROSS WINDS AND SHOULD NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADWAYS 
OF UNKNOWN DEPTH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MST 
TUESDAY EVENING FOR SOUTHEASTERN ARIZONA.

LAT...LON 3283 11098 3293 11068 3325 11095 3304 11123

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 5:05 PM MST	Severe Thunderstorm Warning	TWC	Pima	40 min
Jul 9, 7:11 PM MST	Severe Thunderstorm Warning	TWC	Pinal	34 min
Jul 10, 2:26 PM MST	Severe Thunderstorm Warning	TWC	Pinal	34 min
Jul 10, 2:57 PM MST	Severe Thunderstorm Warning	TWC	Pima	48 min
Jul 10, 3:20 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	40 min
Jul 10, 4:00 PM MST	Severe Thunderstorm Warning	TWC	Pinal	30 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2002 Every 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.