Alert archive / Arizona / Flash Flood Warnings in 1997
Flash Flood Warning 11, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 2, 1997, 3:22 PM MST for Cochise County, Arizona. It was in force for 63 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 2, 1997, 3:22 PM MST (22:22 UTC)
- Expired
- Aug 2, 1997, 4:25 PM MST
- In force
- 63 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 22:22 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, 10.4 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
- 111 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 1554 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 9 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 022225 FFWTUS AZC003-022325- BULLETIN FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 322 PM MST SAT AUG 2 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 425 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN ARIZONA ...NORTHWESTERN COCHISE COUNTY AT 320 PM...THUNDERSTORMS 10 MILES SOUTHEAST OF BENSON HAD PRODUCED UP TO 2 INCHES OF RAIN IN THE PAST HOUR. NORMALLY DRY WASHES IN THE VICINITY OF ST DAVID AND HIGHWAY 80 WILL BE FLOWING AND RISING RAPIDLY WITHIN THE NEXT 30 MINUTES. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! BRYANT
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 2, 2:34 PM MST, 48 minutes earlier.
Area forecast discussion, Aug 2, 2:34 PM MST, 48 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST SAT AUG 2 1997 FIRST TSTM DEVELOP SHORTLY AFTER NOON. SOME ECHO TOPS OVER 50K FT...BUT SLOW TO DEVELOP. AAT 2 PM STILL ONLY 95 AT TUS. 850 MB INVERTED TROUGH OVER SOUTH CENTRAL ARIZONA AND FORECAST TO REMAIN OVER SW AZ. WELL DEFINED WAVE OVER GULF CA MOVING NWD POSSIBLY INTO SWRN AZ TONIGHT. UPPER HIGH TO REMAIN IN FAVORABLE MONSOON POSITION OVER CO AREA. SEE ONLBY MINOR FLUCTUATIONS IN LOW LEVEL MOISTURE...THUS WILL CONTINUE STANDARD MONSOON THROUGH MONDAY. TUS 333. TUS...NONE
In the hours before
Special weather statement, Aug 2, 11:46 AM MST, 3 hours 36 minutes before
AZZ019-026>030-012300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST SAT AUG 2 1997...THIS PRODUCT IS NOT UPDATED.
...FLASH FLOOD WATCH FOR SOUTHEASTERN ARIZONA FROM NOON UNTIL
MIDNIGHT...
AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 50 20 20 10 NW 15
GRAHAM 40 20 20 10 NW 15
GREENLEE 50 10 20 10 NW 15
TUCSON/ERN PIMA 40 20 20 10 NW 15
TOHONO OODHAM 30 10 10 10 NW 15
WESTERN PIMA 30 10 10 10 NW 15
SOUTHEAST PINAL 30 10 15 10 NW 15
SANTA CRUZ 40 20 20 10 NW 15
SYNOPSIS...
THE ATMOSPHERE TODAY IS EVEN MORE MOIST AND UNSTABLE THAN
YESTERDAY. WITH MOSTLY SUNNY SKIES THIS MORNING...THERE WILL BE
PLENTY OF HEATING TO INITIATE MORE STRONG THUNDERSTORMS THIS
AFTERNOON. THE MAIN THREAT WILL BE HEAVY RAINFALL AND LOCAL
FLOODING. SOME STORMS MAY PRODUCE RAINFALL ACCUMULATIONS OVER
1.00 INCH.
*****************************************************************
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/The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:55 PM MST | Flash Flood Warning | TWC | Pima | 35 min |
| Aug 1, 6:33 PM MST | Flash Flood Warning | TWC | Pima | 57 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.