Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 50, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 8, 1997, 1:41 PM MST for Cochise County, Santa Cruz County, Arizona. It was in force for 59 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 8, 1997, 1:41 PM MST (20:41 UTC)
- Expired
- Aug 8, 1997, 2:40 PM MST
- In force
- 59 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
Counties Cochise County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 38 km from the middle of the area, began a volume at 20:45 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, 8.7 hours before the alert went out and 77 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
- 842 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 1691 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 10 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 082042 RRA SVRTUS AZC003-023-082140- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 141 PM MST FRI AUG 8 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 240 PM MST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN ARIZONA ...SOUTHWESTERN COCHISE COUNTY IN SOUTHERN ARIZONA ...EASTERN SANTA CRUZ COUNTY AT 137 PM MST...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS OVER PORTIONS OF EASTERN SANTA CRUZ COUNTY AND SOUTHWEST COCHISE COUNTY. ONE STORM WAS LOCATED 5 MILES SOUTH OF SONOITA AND ANOTHER NEAR HUACHUCA CITY. STORMS WILL CONTINUE TO INCREASE IN NUMBER AND INTENSITY AND SPREAD ACROSS THE AREA POTENTIALLY AFFECTING THE LOCATIONS OF PATAGONIA...SONOITA...FORT HUACHUCA AND SIERRA VISTA.
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 8, 11:20 AM MST, 2 hours 21 minutes earlier.
Area forecast discussion, Aug 8, 11:20 AM MST, 2 hours 21 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 925 AM MST FRI AUG 8 1997 68 DEWPT AT TUS...PRETTY HEALTHY. STG LOW LVL FLOW OFF THE GLFCAL CONTS THRU YUM (YUM DEWPT 77)...LOW LVL KEMX VWP SHOWING NICE CIRCULATION BACK OFF THE DESERTS. 12Z TUS RAOB SIMILAR TO YDA WITH MORE MSTR. CI FROM EVE STORMS FLEEING ERYR TDA WITH SOME APPARENT DIFFLUENCE ALF...MORE SUN. COOLER H5 AIR WRAPPING ARND HI TO THE NW MOVG TWD OUR CWFA...FLG AT -08C THIS MRNG. HOW HOT WILL IT GET ONCE AGAIN THE QUESTION OF THE DAY. I FEEL LIKE A RABBIT STARING DOWN A PAIR OF HEADLIGHTS ON THE HIGHWAY. WITH LWR LVL MSTR WE MAY AGN SEE A DELAY IN SOME AREAS...ESPECIALLY HVY PRECIP AREAS FROM YDA...BUT OVERALL I'M THINKING OF A VERY ACTIVE AFTN/EVE. YDA NOT TOO BAD...TDA MAYBE EVEN BETTER. AGN A CONCERN FOR SEVERE WX/HVY PRECIP POTENTIAL. CURRENT FCST HITS THIS PRETTY WELL. TUS 343. MEYER TUS...NONE
In the hours before
Special weather statement, Aug 8, 11:36 AM MST, 2 hours 5 minutes before
AZZ019-026>030-082300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST FRI AUG 8 1997...THIS PRODUCT IS NOT UPDATED
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 40 30 40 20 S 8
GRAHAM 40 25 40 20 S 8
GREENLEE 40 10 40 10 S 8
TUCSON/ERN PIMA 40 40 50 25 SW 10
TOHONO OODHAM 30 40 30 15 SW 10
WESTERN PIMA 25 30 25 5 W 10
SOUTHEAST PINAL 30 30 30 10 SW 10
SANTA CRUZ 60 40 50 25 SW 10
SYNOPSIS...
ATMOSPHERE IS LOADED WITH MOISTURE. ENOUGH HEATING FOR VERY
UNSTABLE AFTERNOON AND EVENING. POTENTIAL FOR A VARIETY OF
ACTIVITY WITH HEAVY RAIN...STRONG WINDS...AND HAIL.
*****************************************************************
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/MEYERSpecial weather statement, Aug 8, 11:59 AM MST, 1 hour 42 minutes before
AZZ019-026>030-082300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST FRI AUG 8 1997...THIS PRODUCT IS NOT UPDATED
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 40 30 40 20 S 8
GRAHAM 40 25 40 20 S 8
GREENLEE 40 10 40 10 S 8
TUCSON/ERN PIMA 40 40 50 25 SW 10
TOHONO OODHAM 30 40 30 15 SW 10
WESTERN PIMA 25 30 25 5 W 10
SOUTHEAST PINAL 30 30 30 10 SW 10
SANTA CRUZ 60 40 50 25 SW 10
SYNOPSIS...
ATMOSPHERE IS LOADED WITH MOISTURE. ENOUGH HEATING FOR VERY
UNSTABLE AFTERNOON AND EVENING. POTENTIAL FOR A VARIETY OF
ACTIVITY WITH HEAVY RAIN...STRONG WINDS...AND HAIL.
*****************************************************************
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 7, 5:44 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
| Aug 7, 6:40 PM MST | Severe Thunderstorm Warning | TWC | Pima | 60 min |
| Aug 7, 7:43 PM MST | Severe Thunderstorm Warning | TWC | Pima | 62 min |
| Aug 7, 8:49 PM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
| Aug 8, 12:38 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 47 min |
| Aug 8, 1:32 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 63 min |
| Aug 8, 2:53 PM MST | Flash Flood Warning | TWC | Greenlee | 62 min |
| Aug 8, 2:53 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 62 min |
| Aug 8, 2:59 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 61 min |
| Aug 8, 3:40 PM MST | Severe Thunderstorm Warning | TWC | Graham | 50 min |
| Aug 8, 3:46 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 min |
| Aug 8, 3:59 PM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
| Aug 8, 4:37 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Aug 8, 4:51 PM MST | Flash Flood Warning | TWC | Pima | 34 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.