Alert archive / Arizona / Flash Flood Warnings in 1997
Flash Flood Warning 16, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 8, 1997, 4:51 PM MST for Pima County, Arizona. It was in force for 34 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, 4:51 PM MST (23:51 UTC)
- Expired
- Aug 8, 1997, 5:25 PM MST
- In force
- 34 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The radar
The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 23:55 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, 11.9 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
- 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 082352 FFWTUS AZC019-090025- BULLETIN FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 451 PM MST FRI AUG 8 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 525 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHERN ARIZONA ...NORTHEASTERN PIMA COUNTY AT 450 PM MST...TUCSON DOPPLER RADAR DETECTED SEVERE THUNDERSTORMS NEAR RYAN FIELD AND OLD TUCSON. THESE STORMS WERE PRODUCING RAINFALL RATES OF UP TO TWO AND A HALF INCHES PER HOUR NEAR OLD TUCSON. EXPECT RAPID FLOODING OF LOW WATER CROSSINGS! OKULSKI
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Aug 8, 2:37 PM MST, 2 hours 14 minutes earlier.
Area forecast discussion, Aug 8, 2:37 PM MST, 2 hours 14 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST FRI AUG 8 1997 SCT TSTMS DVLPG THROUGHOUT SE AZ...SEVERAL SEVERE. MAINTAINED STG SFC DEWPTS WELL ABV 60 THRU AFTN WITH VERY LARGE CAPE VALUES. SHOULD SEE DVLPMT CONT THRU AFTN AND EVE. WATCH FOR WELL SUPPORTED OUTFLOWS...ESPECIALLY OFF THE RIM. HEAVY RAINFALL. ENOUGH HVY RAINFALL WITH DEBRIS CLD COULD DEPRESS ACTIVITY SOME LOCATIONS TMW. CURRENT FCST TO REFLECT TSTpMS SUSTAINED INTO THE EVE HRS WITH TEMPS AND TSTM COVERAGE DOWN A LTL FOR TMW. LOW LVL MSTR THRU EXTD. PATTERN MAY SHIFT RDG AXIS TO LESS FAVORABLE POSITION...NOTHING TO POINT AT RIGHT NOW. ANOTHER BUSY TIME. TUS 5233. MEYER TUS...NONE
In the hours before
Special weather statement, Aug 8, 11:36 AM MST, 5 hours 15 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, 4 hours 52 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, 1:41 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Santa Cruz | 59 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 |
Nearby
Flash Flood Warnings in Arizona, 1997Every flash flood 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.