Alert archive / Arizona / Flash Flood Warnings in 1996
Flash Flood Warning 95, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 11, 1996, 1:18 PM MST for Pinal County, Arizona. It was in force for 57 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
- Sep 11, 1996, 1:18 PM MST (20:18 UTC)
- Expired
- Sep 11, 1996, 2:15 PM MST
- In force
- 57 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pinal County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 8.3 hours before the alert went out and 92 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
- 716 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1307 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 15 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 112016 FFWTUS AZC021-112115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 118 PM MST WED SEP 11 1996 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 215 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...SOUTH CENTRAL SOUTHEAST PINAL COUNTY AT 115 PM TUCSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CONTINUES OVER SOUTH CENTRL PINAL COUNTY ALONG HIGHWAY 79 BETWEEN ORACLE JUNCTION AND FLORENCE. THIS STORM IS ALSO PRODUCING VERY HEAVY RAINFALL. THEREFORE THE SEVERE THUNDERSTORM AND FLASH FLOOD WARNING FOR SOUTH CENTRAL PINAL COUNTY HAS BEEN EXTENDED UNTIL 215 PM. THIS STORM IS MOVING VERY SLOWLY NORTHWARD. PERSONS IN THIS AREA CAN EXPECT WIND GUSTS IN EXCESS OF 60 MPH ALONG WITH VERY HEAVY RAIN PRODUCING FLOODING OF WASHES AND LOW SPOTS IN ROADWAYS. COLL:INS
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 Sep 11, 9:18 AM MST, 4 hours earlier.
Area forecast discussion, Sep 11, 9:18 AM MST, 4 hours before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 920 AM MST WED SEP 11 1996 SATELLITE PICTURES INDICATE VORT MAX OVR PINAL COUNTY ATTM MOVG SLOLY EWD. NGM HAD BEST INITIAL ANALYSIS ON THIS FEATURE BUT A TAD TOO FAR WEST. NGM MOVS THIS VORT MAX SEWD TO NEAR DUG AT 00Z THIS AFTN WHICH WOULD BRING PRETTY ACTIVE WX TO OUR SERN SECTIONS. WITH TUS SOUNDING SHOWING SLY WINDS AT ALL LEVELS BELIEVE THIS VORT MAX WILL NOT MOVE SEWD INTO SE AZ PER NGM. HOWEVER WATER VAPOR PICTURES SHOW A LITTLE CYCLONIC CIRCULATION OVR NRN MEX SOUTH OF OLS WHICH COULD MOVE INTO SE AZ LATER TDA AIDING TSTMS DEVELOPMENT. EVEN WITHOUT UPWARD FORCING FROM VORT MAXS THERE IS ENOUGH MSTR AND INSTABILITY AROUND TO GET TSTMS GOING TDA AS GOOD SOLAR HEATING WILL TAKE PLACE UNDER MOSTLY SUNNY SKIES THIS MORNING SPCLY SRN SECTIONS. CANCELLED FLASH FLOOD WATCH FOR SE PINAL AND GRAHAM COUNTIES AT 8 AM THIS MORNING AS RADAR AND SATELLITE PICTURES INDICATED AREA OF SHWRS AND TSMTS HAD MOVED NORTH OF THIS AREA. NEW MODEL RUNS CONTINUE TO INDICATE OUR MONSOON WILL COME TO AN END THIS WEEKEND AS STG PAC UPR TROF PUSHES ONTO WEST COAST BRINGING A DRY WLY FLOW ACROSS SE AZ. NGM STRONGES AND FASTER WITH THIS TROF HENCE BRING DRYING TREND IN FASTER WITH DRIER AIR OVERSPREADING SE AZ AS EARLY AS FRI. THIS MIGHT BE A LITTLE TOO FAST. SOMETHING TO FURTHER EVALUATE FOR AFTERNOON PACKAGE. ALSO HURRICANE FAUSTO JUST OFF THE CENTRAL MEX CST MOVG NWWD BUT MODELS KEEP ANY MOISTURE FROM THIS SYS TO OUR SOUTH AS DEVELOPING UPR TROF MOVG IN TOO FAST TO ALLOW MSTR TO MOVE INTO AZ. CURRENT FORECAST LOOK GOOD AND NO MAJOR UPDATED PLANNED. TUS 433. COLLINS
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 12:10 PM MST | Flash Flood Warning | TWC | Pinal | 65 min |
| Sep 11, 12:10 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 65 min |
| Sep 11, 12:34 PM MST | Flash Flood Warning | TWC | Cochise | 56 min |
| Sep 11, 12:34 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 56 min |
| Sep 11, 1:18 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 57 min |
| Sep 11, 2:08 PM MST | Flash Flood Warning | TWC | Pinal | 67 min |
Nearby
Flash Flood Warnings in Arizona, 1996Every flash flood warning in 1996
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.