Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 81, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 23, 1997, 4:25 PM MST for Cochise 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
- Aug 23, 1997, 4:25 PM MST (23:25 UTC)
- Expired
- Aug 23, 1997, 5:10 PM MST
- In force
- 45 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 23:25 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 12:00Z, 11.4 hours before the alert went out and 113 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
- 474 J/kg
- Mixed-layer CIN
- -193 J/kg
- Mixed-layer LCL
- 2261 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 71 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 232325 RRA SVRTUS AZC003-240010- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 425 PM MST SAT AUG 23 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 510 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN ARIZONA ...NORTHERN COCHISE COUNTY AT 424 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES WEST NORTHWEST OF WILFLCOX MOVING EAST AT 5 MPH. MEYER
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 23, 2:30 PM MST, 1 hour 55 minutes earlier.
Area forecast discussion, Aug 23, 2:30 PM MST, 1 hour 55 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST SAT AUG 23 1997 HI PRES ALF OVR SE AZ THIS AFTN. VRY LITTLE VERTICAL WND SHEAR TO WORK WITH...THEREFORE TS TO BE PULSE TYPE WITH LITTLE MOVMNT. OUTFLOW BNDRIES ARE ALLOWG SOME TS TO PROPOGATE INTO THE LWR VLYS. HI CNTR SHIFTS NEWD TO A MORE FAVORABLE LOCATION IN RESPONSE TO A STG TROF PUSHG INTO THE PAC NW. STGR SELY FLOW TO DVLP SUN AND MON WITH AN UPSWING IN MONSOON ACTIVITY ANTICIPATED. WL GO WITH ONLY A MODEST INCRS IN POPS ON THE COUNT OF TWO COMPETING FACTORS. H5 HGTS LWR OVR THE SIERRA MADRE WHICH SHOULD ALLOW AFTN/EVE MCS DVLPMNT. HWVR THE INFLUX OF MID LVL DRY AIR FM SWLY FLOW ACRS NW AZ DURG THE PD MAY LIMIT THE EXTENT OF DP MSTR NECESSARY FOR A REAL ACTIVE MONSOON PATTERN. A STGR TROF TO MOV INTO THE PAC NW BY MID WEEK. MODELS DIFFER SOMEWHAT ON THE POSTN OF THE HI ALF. ECMWF DEPICTS A DRIER SCENARIO THE MRF. AGREE WITH PHX THAT A STANDARD LOW GRADE MONSOON LOOKS GOOD. TUS 3233. OKULSKI TUS...NONE.
In the hours before
Special weather statement, Aug 23, 11:43 AM MST, 4 hours 42 minutes before
AZZ019-026>030-232300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST SAT AUG 23 1997...THIS PRODUCT IS NOT UPDATED
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 40 30 60 20 S 5
GRAHAM 40 30 60 20 E 5
GREENLEE 40 20 60 20 E 5
TUCSON/ERN PIMA 30 20 40 10 E 5
TOHONO OODHAM 20 10 20 10 S 5
WESTERN PIMA 20 10 20 10 W 5
SOUTHEAST PINAL 20 10 30 10 E 5
SANTA CRUZ 40 30 60 10 S 5
SYNOPSIS...HIGH PRESSURE ALOFT WILL REMAIN OVER SOUTHEAST ARIZONA
THIS AFTERNOON AND EVENING. SHORT DURATION...SLOW MOVING
THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING AND BE MOST
NUMEROUS NEAR THE BORDERS OF NEW MEXICO AND MEXICO. THE LOWER
LEVELS OF THE ATMOSPHERE REMAIN MOIST AND LOCALLY HEAVY RAINFALL
CAN EXPECTED WITH STRONGER STORMS.
*****************************************************************
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/OKULSKIThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 1:48 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 32 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.