Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 26, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 9, 1997, 7:25 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 45 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
- Jul 9, 1997, 7:25 PM MST (02:25 UTC)
- Expired
- Jul 9, 1997, 8:10 PM MST
- In force
- 45 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
Counties Pima County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 66 km from the middle of the area, began a volume at 02:25 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, 2.4 hours before the alert went out and 56 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
- 93 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 3180 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
027 WUUS1 KTUS 100227 RRA SVRTUS AZC019-023-100310- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 725 PM MST WED JUL 9 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 810 PM MST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHERN ARIZONA ...SOUTHEASTERN PIMA COUNTY ...EXTREME NORTHWESTERN SANTA CRUZ COUNTY AT 723 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES WEST SOUTHWEST OF AMADO MOVING EAST NORTHEAST AT 15 MPH. SOME LOCATIONS IN THE PATH OF THIS STORM ARE... AMADO BY 758 PM MST ARIVACA JUNCTION BY 800 PM MST COLLINS
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.
NWS Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 2:55 PM MST, 4 hours 30 minutes earlier.
Area forecast discussion, Jul 9, 2:55 PM MST, 4 hours 30 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST WED JUL 9 1997 TSTMS POPPING UP WITH A FEW GETTING CLOSE TO SVR...BEST CHANCE OF THIS IS ACROSS CNTRL PIMA WITH BEST HEATING AND A LITTLE MORE MSTR. THE STORMS MAY HAVE A TOUGH TIME ENDING TONIGHT WITH CONTINUED MSTR FEED FROM THE SOUTH ENHANCED BY PVA FROM UPR LOW. MSTR WILL HANG AROUND ON THU AGAINST MODEL GUIDANCE MAKING FOR ANOTHER ACTIVE DAY. SWLY STEERING THO SHOULD KEEP STORMS AWAY FROM DESERT FOR THE MOST PART. THEN WE SHOULD DRY OUT ENUF FRI TO LIMIT TSTM THREAT TO MTNS. TUS 3221. HOLBROOK TUS...NONE
In the hours before
Special weather statement, Jul 9, 3:55 PM MST, 3 hours 30 minutes before
AZZ019-026>030-100700-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ...UPDATED
355 PM MST WED JUL 9 1997
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 20 0 0 0 S10
GRAHAM 20 0 0 0 S10
GREENLEE 10 0 0 0 S10
TUCSON/ERN PIMA 20 20 40 0 SW10
TOHONO O'ODHAM 25 40 70 0 SW15
WESTERN PIMA 25 10 0 0 SW15
SOUTHEAST PINAL 15 30 30 0 SW10
SANTA CRUZ 30 20 20 0 SW10
SYNOPSIS...
THE ATMOSPHERE HAS DESTABILIZED DUE TO A SIGNIFICANT INCREASE IN
LOW LEVEL MOISTURE THROUGH CENTRAL PIMA COUNTY. SEE EARLIER OUTLOOK
FOR MORE DETAILS ON THE DISCUSSION.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION FROM WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12 NOON TO 12 MIDNIGHT OF THE DAY OF ISSUANCE
THIS PRODUCT IS NOT TO BE USED IN PnLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES.
END/DRBSpecial weather statement, Jul 9, 4:04 PM MST, 3 hours 21 minutes before
AZZ019-026>030-100700-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ...UPDATED
355 PM MST WED JUL 9 1997
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 20 0 0 0 S10
GRAHAM 20 0 0 0 S10
GREENLEE 10 0 0 0 S10
TUCSON/ERN PIMA 20 20 40 0 SW10
TOHONO O'ODHAM 25 40 70 0 SW15
WESTERN PIMA 25 10 0 0 SW15
SOUTHEAST PINAL 15 30 30 0 SW10
SANTA CRUZ 30 20 20 0 SW10
SYNOPSIS...
THE ATMOSPHERE HAS DESTABILIZED DUE TO A SIGNIFICANT INCREASE IN
LOW LEVEL MOISTURE THROUGH CENTRAL PIMA COUNTY. SEE EARLIER OUTLOOK
FOR MORE DETAILS ON THE DISCUSSION.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION FROM WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12 NOON TO 12 MIDNIGHT OF THE DAY OF ISSUANCE
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES.
END/DRBThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 6:53 PM MST | Flash Flood Warning | TWC | Pima | 62 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.