Alert archive / Arizona / Flash Flood Warnings in 1996
Flash Flood Warning 46, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 9, 1996, 3:45 PM MST for Pima County, Arizona. It was in force for 2 hr. 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 9, 1996, 3:45 PM MST (22:45 UTC)
- Expired
- Aug 9, 1996, 5:45 PM MST
- In force
- 2 hr
- 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 22:49 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, 10.8 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
- 260 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 227 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 092243 FFWTUS AZC019-100045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 345 PM MST FRI AUG 9 1996 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 545 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...WESTERN PIMA COUNTY AT 340 PM TUCSON DOPPLER RADAR INDICATED OVER 2 1/2 INCHES OF RAIN HAS FALLEN FROM THUNDERSTORMS OVER ORGAN PIPE N.M. THESE STORMS ARE MOVING TOWARDS THE NORTH AT 10-15 MPH AND WILL AFFECT THE TOWN OF AJO AND HIGHWAY 85 BETWEEN 400 PM AND 430 PM. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. COLLINS
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 9, 2:01 PM MST, 1 hour 44 minutes earlier.
Area forecast discussion, Aug 9, 2:01 PM MST, 1 hour 44 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 215 PM MST FRI AUG 9 1996 SCT TSTMS ON THE STG SIDE FORMING UP NICELY...JUST A MATTER OF TIME FOR METRO TUCSON THIS AFTN. VORT THAT PROVIDED NICE CATALYST FOR OVERNIGHT ACTION HAS SHIFTED NWD...PERHAPS LESS OF A FOCUS FOR THE SHORT TERM BUT PLENTY OF MSTR/HEATING/INSTBY AVBL ANYWAY. ELY WAVE ON ITS WAY IN SHUD HELP ENHANCE THINGS A BIT FOR TMW. OTRW...HEY...IT'S AUGUST. PLENTVY OF DEEP MSTR TO HANG ARND THESE PARTS THRU THE EXTD PD. WILL JUST TRY TO ANTICIPATE THE FINE PTS TO REFINE THE DEGREE OF SCT COVERAGE AS NECESSARY. TUS 5443. MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 8:00 PM MST | Flash Flood Warning | TWC | Pinal | 60 min |
| Aug 9, 1:18 PM MST | Severe Thunderstorm Warning | TWC | Pima | 72 min |
| Aug 9, 2:19 PM MST | Severe Thunderstorm Warning | TWC | Pima | 56 min |
| Aug 9, 4:16 PM MST | Flash Flood Warning | TWC | Pima | 119 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; radar from the NEXRAD Level II archive.