Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 65, NWS Phoenix, AZ

August 26, 1997Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 26, 1997, 8:10 AM MST for Maricopa County, Arizona. It was in force for 45 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 26, 1997, 8:10 AM MST (15:10 UTC)
Expired: Aug 26, 1997, 8:55 AM MST
In force: 45 min
Issued by: NWS Phoenix, AZ
Area: Whole counties

County Maricopa County, AZ

What was reported inside it

Time	Report	Where	Remark
Aug 26, 8:30 AM MST	Thunderstorm Wind 52	Scottsdale, AZ	In the area of Pima Road at McDonald Drive, reports of chaparral trees and fences down, roofs blown off, and plate glass windows blown out.
Aug 26, 8:30 AM MST	Thunderstorm Wind 53	Scottsdale, AZ	Wind gust recorded at Scottsdale Community College.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 3.2 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-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: 718 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 2056 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -2 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.

000 
TTAA00 KPHX 261510 RRA
SVRPHX
AZC013-261555-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
810 AM MST TUE AUG 26 1997

*  SEVERE THUNDERSTORM WARNING FOR
   CENTRAL MARICOPA COUNTY IN CENTRAL ARIZONA

*  UNTIL 855 AM MST

*  SOME LOCATIONS AFFECTED
   TEMPE
   SCOTTSDALE
   WEST MESA
   WEST CHANDLER
   AHWATUKEE
   SOUTH PHOENIX
 
*  AT 805 AM MST RADAR INDICATED A SEVERE THUNDERSTORM
   OVER AHWATUKEE. MOVEMENT WAS TO THE NORTH NEAR 15 MPH.

HAIL GREATER THAN 3/4 INCH IN DIAMETER AND DAMAGING WIND IN EXCESS
OF 57 MPH ARE LIKELY WITH THIS STORM.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 8:54 AM MST	Flash Flood Warning	PSR	Maricopa	66 min
Aug 26, 8:54 AM MST	Severe Thunderstorm Warning	PSR	Maricopa	66 min
Aug 26, 8:55 AM MST	Flash Flood Warning	PSR	Maricopa	65 min
Aug 26, 8:55 AM MST	Severe Thunderstorm Warning	PSR	Maricopa	65 min
Aug 26, 10:18 AM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Aug 26, 1:37 PM MST	Flash Flood Warning	PSR	Maricopa	2 hr
Aug 26, 1:43 PM MST	Severe Thunderstorm Warning	PSR	Pinal	62 min
Aug 26, 4:15 PM MST	Severe Thunderstorm Warning	PSR	Yuma	55 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1997 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.