Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 84, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Sep 2, 1997, 6:07 PM MST for Maricopa County, Arizona. It was in force for 68 min. 1 report 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
- Sep 2, 1997, 6:07 PM MST (01:07 UTC)
- Expired
- Sep 2, 1997, 7:15 PM MST
- In force
- 68 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 2, 6:30 PM MST | Thunderstorm Wind 70 | Tortilla Flat, AZ | The Canyon Lake Marina was relocated 50 feet due to thunderstorm winds estimated near 80 mph. Numerous boats, 360 in all, shifted 50 feet east or north. During the strong winds, the relocated marina and several of the boats sustained damage. |
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 00:00Z, 1.1 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.
- Mixed-layer CAPE
- 1011 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1742 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 243 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHX 030107 RRA SVRPHX AZC013-030205- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 607 PM MST TUE SEP 2 1997 * SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MARICOPA COUNTY IN CENTRAL ARIZONA * UNTIL 715 PM MST * SOME LOCATIONS AFFECTED FT. MCDOWELL INDIAN COMMUNITY APACHE TRAIL SAGUARO-CANYON-APACHE LAKES BEELINE HIGHWAY FOUNTAIN HILLS * AT 605 PM MST RADAR INDICATED A SEVERE THUNDERSTORM EXTENDING FROM THE APACHE TRAIL TO 10 MILES EAST-SOUTHEAST OF FOUNTAIN HILLS. MOVEMENT WAS TO THE NORTHWEST AT 20 MPH. DAMAGING WINDS IN EXCESS OF 60 MPH ARE LIKELY WITH THIS STORM. BOATERS ON SAGUARO...CANYON...AND APACHE LAKES SHOULD EXERCISE EXTREME CAUTION. HEAVY RAIN AND INTENSE LIGHTNING CAN ALSO BE EXPECTED WITH THIS STORM.
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 2, 2:45 PM MST, 3 hours 22 minutes before
AZZ020>025-CAZ030>033-031130- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 215 PM MST/PDT TUE SEPT 2 1997 ...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF SOUTHWEST ARIZONA AND FAR SOUTHEAST CALIFORNIA THROUGH THIS EVENING... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AGAIN TODAY ACROSS PARTS OF SOUTHWEST ARIZONA AND FAR SOUTHEAST CALIFORNIA. THIS INCLUDES THE ARIZONA COUNTIES OF YUMA...LA PAZ...AND MAINLY WESTERN MARICOPA...AND THE SOUTHEAST CALIFORNIA COUNTIES OF IMPERIAL AND EASTERN RIVERSIDE. SHOWERS AND THUNDERSTORMS WILL BE ON THE UPSWING THE REST OF THIS AFTERNOON AND THIS EVENING. SOME OF THE STRONGER THUNDERSTORMS THAT DEVELOP MAY PRODUCE ISOLATED WINDS IN EXCESS OF 57 MPH AND LOCALLY HEAVY DOWNPOURS. MOVEMENT OF THE STORMS WILL BE TOWARD THE NORTH AND NORTHWEST AT 15 MPH. PERSONS IN SOUTHWEST ARIZONA AND FAR SOUTHEAST CALIFORNIA SHOULD BE ALERT FOR DEVELOPING THUNDERSTORMS. LOCALLY HEAVY RAIN AND BLOWING DUST MAY ACCOMPANY SOME OF THE STRONGER STORMS...WHICH COULD BECOME EXTREME HAZARDS FOR MOTORISTS ON SECTIONS OF INTERSTATES 8 AND 10. .................................................................... 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
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 5:45 PM MST | Severe Thunderstorm Warning | PSR | Yuma | 75 min |
| Sep 2, 5:50 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 60 min |
| Sep 2, 6:56 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.