Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 49, NWS Phoenix, AZ

August 8, 1997Gila County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 8, 1997, 5:03 PM MST for Gila County, Arizona. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 8, 1997, 5:03 PM MST (00:03 UTC)
Expired
Aug 8, 1997, 6:05 PM MST
In force
62 min
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Gila County, AZ

The radar

The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 00:03 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, 0.1 hours before the alert went out and 181 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 1997-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 657 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 00:00Z on 1997-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
657 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1881 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHX 090003 RRA
SVRPHX
AZC007-090105-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
503 PM MST FRI AUG 8 1997

*  SEVERE THUNDERSTORM WARNING FOR
   SOUTHWESTERN GILA COUNTY IN CENTRAL ARIZONA

*  UNTIL 605 PM MST

*  SOME LOCATIONS AFFECTED
   PUNKIN CENTER
   ROOSEVELT LAKE RECREATIONAL AREA
 
*  AT 500 PM MST RADAR INDICATED SEVERE THUNDERSTORMS FROM 15 NORTH
   OF PUNKIN CENTER TO 15 NORTHEAST OF ROOSEVELT. MOVEMENT WAS
   TO THE SOUTHWEST AT 15 TO 20 MPH.

DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL GREATER THAN 3/4 INCH
IN DIAMETER ARE LIKELY WITH THIS STORM.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 5:26 PM MSTSevere Thunderstorm WarningPSRGila34 min
Aug 8, 6:40 PM MSTSevere Thunderstorm WarningPSRMaricopa, Pinal65 min
Aug 8, 7:19 PM MSTSevere Thunderstorm WarningPSRMaricopa61 min
Aug 8, 7:42 PM MSTSevere Thunderstorm WarningPSRMaricopa78 min
Aug 8, 7:46 PM MSTSevere Thunderstorm WarningPSRPinal44 min
Aug 8, 8:15 PM MSTSevere Thunderstorm WarningPSRMaricopa75 min
Aug 8, 9:00 PM MSTSevere Thunderstorm WarningPSRMaricopa60 min
Aug 8, 9:31 PM MSTSevere Thunderstorm WarningPSRLa Paz54 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997

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.