Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 62, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 9, 1997, 4:42 PM MST for Pima County, Arizona. It was in force for 48 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 9, 1997, 4:42 PM MST (23:42 UTC)
- Expired
- Aug 9, 1997, 5:30 PM MST
- In force
- 48 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 11.7 hours before the alert went out and 84 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
- 3 J/kg
- Mixed-layer CIN
- -190 J/kg
- Mixed-layer LCL
- 1305 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 30 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.
000 TTAA00 KTUS 092343 RRA SVRTUS AZC019-100030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 442 PM MST SAT AUG 9 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHERN ARIZONA ...EAST CENTRAL PIMA COUNTY AT 439 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH EXTREMELY HEAVY RAINFALL 17 MILES SOUTH OF TUCSON OR IN THE VICINITY OF GREEN VALLEY MOVING SLOWLY NORTHEAST AT 5 TO 10 MPH. GREEN VALLEY...SAHUARITA AND INTERSTATE 19 ARE IN THE PATH OF THIS STORM. DRB
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 Aug 9, 2:30 PM MST, 2 hours 12 minutes earlier.
Area forecast discussion, Aug 9, 2:30 PM MST, 2 hours 12 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST SAT AUG 9 1997 CLDS BROKE LATE MRNG WITH ISOLD TSTMS DVLPG OVR MAINLY HIGHER TERRAIN. ENVIRONMENTAL FLOW MODIFIED BY LAST NGTS COMPLEX WITH SWLY STEERING FLOW MERGING INTO MORE PERMANENT FEATURE AS SHIFTING RDG CONTS THIS TREND. AREAS RECEIVING THE MOST RAINFALL YDA...GENERALLY ZNS026>028...NOT SHOWING MUCH OF ANYTHING. MORE STABLE PROFILE EVIDENT ON 12Z RAOB WITH SFC TEMPS STRUGGLING. ISOLD EVE STORMS (UNORGANIZED ACTIVITY DOING BETTER S OF THE BORDER) THEN DECRG CLDS. TMW SHUD SEE REBOUND IN AFTN HEATING ALONG WITH MORE THAN SUFFICIENT LOW LVL MSTR FOR BETTER COVERAGE AND SUPPORT IN THE VALLEYS. INTERESTING...STG AND DEEP SELY FLOW ON KYUX VWP. SWLY FLOW SETTING UP MAY DECR MID LVL MSTR A LTL...BUT LWR LVLS WILL HANG IN THERE JUST FINE FOR NOW (NGM WRONG). SCT TSTMS WITH TYPICAL DIURNAL MONSOON FCST INTO THE EXTD. FINE TUNING AS DETAILS SHOW THEMSELVES. TUS 0343. MEYER TUS...NONE
In the hours before
Special weather statement, Aug 9, 11:53 AM MST, 4 hours 49 minutes before
AZZ019-026>030-092300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST SAT AUG 9 1997...THIS PRODUCT IS NOT UPDATED
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 20 15 40 10 NE 8
GRAHAM 20 10 30 10 NE 8
GREENLEE 30 10 30 10 N 10
TUCSON/ERN PIMA 10 10 30 5 NE 10
TOHONO OODHAM 20 15 30 10 NE 10
WESTERN PIMA 15 20 30 10 NE 10
SOUTHEAST PINAL 0 0 0 0
SANTA CRUZ 10 10 30 5 NE 8
SYNOPSIS...
COOLER LOWER ATMOSPHERE FROM RAIN OVER THE PAST 24 HRS WITH LESS
AFTERNOON HEATING DUE TO CLOUD COVER WILL PUT A DAMPER ON MOST
THUNDERSTORM ACTIVITY TODAY. ISOLATED STORMS WILL STILL DEVELOP
OVER MAINLY HIGHER TERRAIN...BUT COVERAGE WILL BE FAR LESS THAN
YESTERDAY. LOCALLY HEAVY RAINFALL STILL A CONCERN FOR ANY STORMS
THAT DO FORM.
*****************************************************************
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 TO 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/MEYERThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 5:18 PM MST | Flash Flood Warning | TWC | Pima | 57 min |
| Aug 8, 5:18 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
| Aug 8, 5:22 PM MST | Flash Flood Warning | TWC | Pinal | 63 min |
| Aug 8, 5:22 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 63 min |
| Aug 8, 5:38 PM MST | Flash Flood Warning | TWC | Pinal | 62 min |
| Aug 8, 5:38 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 62 min |
| Aug 8, 6:14 PM MST | Flash Flood Warning | TWC | Pima | 61 min |
| Aug 8, 6:23 PM MST | Severe Thunderstorm Warning | TWC | Pima | 47 min |
| Aug 8, 6:27 PM MST | Flash Flood Warning | TWC | Pinal | 63 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.