Alert archive / Arizona / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 49, NWS Tucson, AZ

July 28, 2003Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 28, 2003, 4:55 PM MST for Pima County, Arizona. It was in force for 50 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 28, 2003, 4:55 PM MST (23:55 UTC)
Expired
Jul 28, 2003, 5:45 PM MST
In force
50 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Pima County, AZ

The radar

The Tucson radar (KEMX), 35 km from the middle of the area, began a volume at 23:57 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

Tuscon, AZ (KTUS), launched 12:00Z, 11.9 hours before the alert went out and 33 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 12:00Z on 2003-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 371 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 12:00Z on 2003-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.19395878Sfc1 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
371 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1621 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KTWC 282355
SVRTWC
AZC019-290045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
453 PM MST MON JUL 28 2003

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL PIMA COUNTY IN ARIZONA
    THIS INCLUDES THE CITY OF GREEN VALLEY...SAHUARITA

* UNTIL 545 PM MST

* AT 453 PM MST...SEVERE WEATHER SPOTTERS REPORTED 3/4 INCH HAIL     
  IN GREEN VALLEY. THE THUNDERSTORM PRODUCING THIS HAIL WAS MOVING   
  SLOWLY NORTHWEST AT 10 MPH.

GO INSIDE A STRONG BUILDING. DAMAGING WINDS...DEADLY LIGHTNING...AND
HEAVY RAINS ARE LIKELY.

LAT...LON 3175 11122 3176 11063 3209 11069 3207 11125

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 5:55 PM MSTFlash Flood WarningTWCSanta Cruz30 min
Jul 27, 6:30 PM MSTSevere Thunderstorm WarningTWCPima60 min
Jul 27, 7:33 PM MSTSevere Thunderstorm WarningTWCPima42 min
Jul 27, 7:55 PM MSTSevere Thunderstorm WarningTWCPima35 min
Jul 27, 8:31 PM MSTSevere Thunderstorm WarningTWCPima44 min
Jul 28, 3:37 PM MSTSevere Thunderstorm WarningTWCPima23 min
Jul 28, 3:56 PM MSTSevere Thunderstorm WarningTWCSanta Cruz34 min
Jul 28, 4:45 PM MSTFlash Flood WarningTWCPima, Santa Cruz30 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2003Every severe thunderstorm warning in 2003

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.