Alert archive / Arizona / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 21, NWS Phoenix, AZ

July 28, 1995Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 28, 1995, 11:20 PM MST for Maricopa County, Arizona. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jul 28, 1995, 11:20 PM MST (06:20 UTC)
Expired
Jul 29, 1995, 12:00 AM MST
In force
40 min
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 06:24 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 00:00Z, 6.3 hours before the alert went out and 198 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 1995-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 890 joules per kilogram.LCLEL10008507005003002001001 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 1995-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.193958Sfc1 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
890 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
4541 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHX 290623
SVRPHX
AZC013-280700-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING FOR HIGH WINDS
NATIONAL WEATHER SERVICE PHOENIX AZ
1120 PM MST FRI JUL 28 1995

THE NATIONAL WEATHER SERVICE IN PHOENIX AZ HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR HIGH WINDS EFFECTIVE UNTIL 1200 AM MST FOR
PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTH-CENTRAL ARIZONA

  ...SOUTHEASTERN MARICOPA COUNTY
     INCLUDING CHANDLER...MESA...GILBERT..AND QUEEN CREEK

AT 11:15 PM PHOENIX DOPPLER RADAR DETECTED STRONG WINDS MOVING INTO
SOUTHEAST MARICOPA COUNTY. WINDS WITH THIS STORM ARE EXPECTED TO
EXCEED 57 MPH AND COULD CAUSE LOCALIZED DAMAGE. 

WIND DRIVEN DUST OR SAND MAY REDUCE VISIBILITIES TO NEAR ZERO AT
TIMES.

SEEK SHELTER IN A STRONG BUILDING, BUT STAY AWAY FROM WINDOWS.

MITCHELL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 12:12 AM MSTSevere Thunderstorm WarningPSRMaricopa58 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1995Every severe thunderstorm warning in 1995

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.