Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 40, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 5, 1997, 5:42 PM MST for Cochise County, Graham 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 5, 1997, 5:42 PM MST (00:42 UTC)
- Expired
- Aug 5, 1997, 6:30 PM MST
- In force
- 48 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
Counties Cochise County, AZ, Graham County, AZ
The radar
The Tucson radar (KEMX), 95 km from the middle of the area, began a volume at 00:41 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, 0.7 hours before the alert went out and 105 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
- 306 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 3444 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 17 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 060044 RRA SVRTUS AZC003-009-060130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 542 PM MST TUE AUG 5 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM MST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN ARIZONA ...NORTHWESTERN COCHISE COUNTY ...SOUTHWESTERN GRAHAM COUNTY AT 541 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 37 MILES SOUTHWEST OF SAFFORD OR 15 MILES SOUTHWEST OF BONITA MOVING EAST AT 5 MPH. THIS STORM WILL REMAIN OVER A VERY REMOTE AREA OF COCHISE AND GRAHAM COUNTIES.
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 5, 2:50 PM MST, 2 hours 52 minutes earlier.
Area forecast discussion, Aug 5, 2:50 PM MST, 2 hours 52 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST TUE AUG 5 1997 SOUNDER DATA SHOWS LOW LEVEL MOISTURE INCREASING FROM THE SOUTH AND EXPECT THAT THIS AFTERNOONS CONVECTION MAY BECOME MORE ACTIVE NEAR THE BORDER TOWARD THE EVENING. WILL NEED TO WATCH FOR NOCTURNAL ACTIVITY TO OUR SOUTH AND WEST DEPENDING ON DEPTH OF MOISTURE INCREASE AND OUTFLOW BOUNDARIES FROM THIS AFTERNOONS CONVECTION. EXPECT MORE ACTIVITY TOMORROW AS LAST NIGHTS MCS LIKELY GENERATED ANOTHER SURGE OVER THE GULF...AND MM5 MODEL TURNS LOW LEVEL WINDS TO SOUTHERLY OVER THE ENTIRE GULF. BOTTOM LINE IS LOW LEVEL MOISTURE VALUES SHOULD INCREASE OVER SOUTHERN AZ. SHORT WAVE OVER THE INTERMOUNTAIN AREA THIS MORNING FORECAST TO DROP SOUTHEASTWARD AROUND DEVELOPING HIGH WITH DEFORMATION AXIS FORECAST TO BE OVER SCTRL TO ECTRL AZ TOMORROW. THIS COULD BE A FOCUS FOR CONVECTION...BUT WIND FIELD NOT TERRIBLY WELL ORGANIZED. NEVERTHELESS...LOW LEVEL MOISTURE SHOULD BE UP SO EXPECT MORE ACTIVITY THAN WE'VE SEEN TODAY. REMAINDER OF THE FORECAST LOOKS MONSOONAL WITH FINE LOW LEVEL MOISTURE BUT NO REAL GOOD STEERING FLOW. FOR NOW WILL SIMPLY WORD WITH SCT AFTERNOON THUNDERSTORMS. TEMPS TO REMAIN SEASONAL. TUS 4453. DRB TUS...NONE.
In the hours before
Special weather statement, Aug 5, 11:57 AM MST, 5 hours 45 minutes before
AZZ019-026>030-052300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST TUE AUG 5 1997...THIS PRODUCT IS NOT UPDATED
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 30 30 35 20 W 5
GRAHAM 40 30 35 15 NW 7
GREENLEE 40 20 30 15 NW 8
TUCSON/ERN PIMA 30 35 40 20 NW 8
TOHONO OODHAM 30 35 50 35 W 5
WESTERN PIMA 20 30 30 20 W 7
SOUTHEAST PINAL 25 35 40 25 NW 7
SANTA CRUZ 60 40 60 40 W 5
SYNOPSIS...
MOISTURE INCREASING FROM THE SOUTH DURING THE DAY WILL FURTHER
DESTABILIZE THE ATMOSPHERE. LACK OF AN ORGANIZED WIND FIELD WILL
TEND TO MAKE THE STORMS SLOW MOVERS RESULTING IN WIDELY SCATTERED
AREAS OF HEAVY RAIN...AND PERHAPS ISOLATED SEVERE WIND GUSTS.
THE BEST CHANCE FOR EXCESSIVE PRECIPITATION WILL BE NEAR THE
MEXICAN BORDER IN SOUTHCENTRAL AND SOUTHEAST PIMA COUNTY...SANTA
CRUZ COUNTY...AND SOUTHWEST COCHISE COUNTY.
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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/BRIGHTThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 6:09 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 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.