Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 93, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Sep 8, 1997, 3:23 PM MST for Gila County, Arizona. It was in force for 47 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
- Sep 8, 1997, 3:23 PM MST (22:23 UTC)
- Expired
- Sep 8, 1997, 4:10 PM MST
- In force
- 47 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Gila County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 10.4 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.
- Mixed-layer CAPE
- 634 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1860 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHX 082225 RRA SVRPHX AZC007-082310- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 323 PM MST MON SEP 8 1997 * SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHERN GILA COUNTY IN CENTRAL ARIZONA * UNTIL 410 PM MST * SOME LOCATIONS AFFECTED WINKELMAN CHRISTMAS HAYDEN * AT 320 PM MST RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME SOUTHERN GILA COUNTY ABOUT 4 MILES NORTH OF WINKELMAN.r MOVEMENT WAS SLOWLY TO THE SOUTH AT AROUND 5 MPH. STRONG DAMAGING WINDS ARE LIKELY WITH THIS STORM ALONG WITH HAIL GREATER THAN 3/4 OF AN INCH IN DIAMETER.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Sep 8, 2:42 PM MST, 41 minutes before
AZZ020>025-CAZ030>033-091130- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 245 PM MST/PDT SUN SEP 7 1997 ...A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA THIS AFTERNOON AND TONIGHT... ISOLATED TO SCATTERED THUNDERSTORMS ARE FORECAST ACROSS THE ENTIRE OUTLOOK AREA THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE THUNDERSTORMS COULD BECOME SEVERE. THIS INCLUDES THE FOLLOWING COUNTIES IN ARIZONA AND SOUTHEAST CALIFORNIA...SOUTHERN GILA...MARICOPA...NORTHWEST PINAL...LA PAZ...YUMA...IMPERIAL...AND EASTERN/CENTRAL RIVERSIDE. THE MAIN THREAT WITH THESE STORMS WILL BE LOCALLY HEAVY RAINFALL... STRONG GUSTY WINDS IN EXCESS OF 60 MPH...AND POSSIBLY BLOWING DUST. THE AIRMASS ACROSS THE OUTLOOK AREA REMAINS MOIST AND UNSTABLE TODAY...AND UPPER LEVEL WINDS WOULD TEND TO FAVOR THE DEVELOPMENT OF ISOLATED SEVERE THUNDERSTORMS ACROSS THE RISK AREA. IN ADDITION... ANY STORMS THAT FORM IN THE EASTERN PORTION OF THE OUTLOOK AREA TODAY AND TONIGHT WILL TEND TO BE RATHER SLOW MOVING...AND THIS WILL ENHANCE THE POTENTIAL FOR LOCALLY HEAVY RAINFALL AND FLASH FLOODING. .................................................................... FOR THE PURPOSES OF THIS OUTLOOK...SEVERE WEATHER REFERS TO ANY OF THE FOLLOWING...DAMAGING WINDS IN EXCESS OF 57 MPH...HAIL 3/4 INCH IN DIAMETER OR LARGER...AND LOCALLY HEAVY RAINFALL WHICH RESULTS IN RUNNING WASHES OR FLOODING. THE OUTLOOK AREA INCLUDES THE FOLLOWING COUNTIES... IN ARIZONA IN CALIFORNIA MARICOPA YUMA IMPERIAL NORTHWEST PINAL LA PAZ CENTRAL AND EASTERN RIVERSIDE SOUTHERN GILA ....................................................................
Special weather statement, Sep 8, 3:13 PM MST, 10 minutes before
AZZ020>025-CAZ030>033-091130- SEVERE WEATHER OUTLOOK...CORRECTED DATE NATIONAL WEATHER SERVICE PHOENIX AZ 245 PM MST/PDT MON SEP 8 1997 ...A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA THIS AFTERNOON AND TONIGHT... ISOLATED TO SCATTERED THUNDERSTORMS ARE FORECAST ACROSS THE ENTIRE OUTLOOK AREA THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE THUNDERSTORMS COULD BECOME SEVERE. THIS INCLUDES THE FOLLOWING COUNTIES IN ARIZONA AND SOUTHEAST CALIFORNIA...SOUTHERN GILA...MARICOPA...NORTHWEST PINAL...LA PAZ...YUMA...IMPERIAL...AND EASTERN/CENTRAL RIVERSIDE. THE MAIN THREAT WITH THESE STORMS WILL BE LOCALLY HEAVY RAINFALL... STRONG GUSTY WINDS IN EXCESS OF 60 MPH...AND POSSIBLY BLOWING DUST. THE AIRMASS ACROSS THE OUTLOOK AREA REMAINS MOIST AND UNSTABLE TODAY...AND UPPER LEVEL WINDS WOULD TEND TO FAVOR THE DEVELOPMENT OF ISOLATED SEVERE THUNDERSTORMS ACROSS THE RISK AREA. IN ADDITION... ANY STORMS THAT FORM IN THE EASTERN PORTION OF THE OUTLOOK AREA TODAY AND TONIGHT WILL TEND TO BE RATHER SLOW MOVING...AND THIS WILL ENHANCE THE POTENTIAL FOR LOCALLY HEAVY RAINFALL AND FLASH FLOODING. .................................................................... FOR THE PURPOSES OF THIS OUTLOOK...SEVERE WEATHER REFERS TO ANY OF THE FOLLOWING...DAMAGING WINDS IN EXCESS OF 57 MPH...HAIL 3/4 INCH IN DIAMETER OR LARGER...AND LOCALLY HEAVY RAINFALL WHICH RESULTS IN RUNNING WASHES OR FLOODING. THE OUTLOOK AREA INCLUDES THE FOLLOWING COUNTIES... IN ARIZONA IN CALIFORNIA MARICOPA YUMA IMPERIAL NORTHWEST PINAL LA PAZ CENTRAL AND EASTERN RIVERSIDE SOUTHERN GILA ....................................................................
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.