Alert archive / Arizona / Flash Flood Warnings in 1996
Flash Flood Warning 5, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 7, 1996, 4:42 PM MST for Pima 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
- Jul 7, 1996, 4:42 PM MST (23:42 UTC)
- Expired
- Jul 7, 1996, 5:30 PM MST
- In force
- 48 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 11.7 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
- 11 J/kg
- Mixed-layer CIN
- -338 J/kg
- Mixed-layer LCL
- 1923 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 20 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 072343 FFWTUS AZC019-080030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 442 PM MST SUN JUL 7 1996 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 530 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...NORTHEASTERN PIMA COUNTY AT 440 PM TUCSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN FAR NORTHEAST PIMA COUNTY JUST WEST OF REDINGTON...ABOUT 20 MILES NORTHEAST OF TUCSON. MOVEMENT WAS TO THE WEST/NORTHWEST AT ABOUT 10 MPH. MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DHIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. MEYER
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 Jul 7, 2:24 PM MST, 2 hours 18 minutes earlier.
Area forecast discussion, Jul 7, 2:24 PM MST, 2 hours 18 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 220 PM MST SUN JUL 7 1996 FINALLY SOME CHGS IN THE BIG SCALE WX PATTERN. MON...UPR HI WKNS AND MOVS TO W TX TURNG FLOW MORE SELY. WK SHRT WV ALONG W CST PRODUCES SWLY WINDS OVR S CA AND FAR SW AZ. NGM INCRG MSTR INTO AREA WITH THETA E MAX OVR ZNS 22-26 AND 70 PCT MEAN RH S OF OLS. NGM FCST SOUNDG FOR TUS SHOWG CAPE OVR 1000...K INDEX AT 39 AND PW 1.37. THESE VALUES SIMILAR TO SAT WHEN FLASH FLOODING WAS REPORTED. WILL KEEP SCT POPS. TEMPS A FUNCTION OF CLDS AND TSTMS. MON NGT...NGM PULLING UP LOTS OF MSTR FROM MEXICO ON SLY WINDS. 70 PCT MEAN RH...MOSTLY CLDY AND MIN TEMPS UP OVR ZNS 23 AND 26. TUE...TUS NGM FCST SOUNDG FOR 12Z TUE IS NRLY SATURATED FROM 650 MB ON UP. MOS GOING BKN-OVC WITH MEASURABLE RAIN. COULD THIS PSBLY BE TOO WET FOR CONVECTIVE ACTVTY. AGREE WITH BLAST UP THAT THIS MAY BE MORE OF A HEAVY RAIN DAY...THAN A SVR WX DAY. MAX TEMPS DOWN SO`ME. TUS 2323.
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 5:03 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 42 min |
| Jul 6, 5:50 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 40 min |
| Jul 6, 5:58 PM MST | Flash Flood Warning | TWC | Cochise | 62 min |
| Jul 6, 6:36 PM MST | Flash Flood Warning | TWC | Pima | 54 min |
| Jul 6, 6:36 PM MST | Severe Thunderstorm Warning | TWC | Pima | 54 min |
| Jul 6, 7:43 PM MST | Flash Flood Warning | TWC | Pima | 92 min |
| Jul 7, 3:30 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 30 min |
| Jul 7, 4:42 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 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.