Alert archive / Arizona / Flash Flood Warnings in 1996
Flash Flood Warning 33, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 25, 1996, 5:00 PM MST for Pima County, Arizona. It was in force for 30 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 25, 1996, 5:00 PM MST (00:00 UTC)
- Expired
- Jul 25, 1996, 5:30 PM MST
- In force
- 30 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 00:02 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 00:00Z, 0.0 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
- 488 J/kg
- Mixed-layer CIN
- -257 J/kg
- Mixed-layer LCL
- 2309 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUS 260000 FFWTUS AZC019-260030- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 500 PM MST THU JUL 25 1996 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 530 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...EASTERN PIMA COUNTY ...FLASH FLOOD WARNING FOR EASTERN PIMA COUNTY INCLUDING FAR WEST AND SOUTHWEST TUCSON METRO EXTENDED UNTIL 530 PM MST... TUCSON DOPPLER RADAR CONTINUES TO SHOW A STRONG THUNDERSTORM WITH HEAVY RAIN OVER OLD TUCSON...AND AN AREA OF MODERATE RAIN OVER PARTS OF THE TUCSON MOUNTAINS. FLASH FLOODING HAS ALREADY BEEN REPORTED IN THE AREA. THUS THE FLASH FLOOD WARNING HAS BEEN EXTENDED UNTIL 530 PM MST. MOST DEATHS IN FLASH FLOODING 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 SM ALL ONE...ON FOOT. THE SEVERE THUNDERSTORM WARNING HAS EXPIRED. SEVERE WEATHER IS NO LONGER EXPECTED...HOWEVER DEADLY LIGHTNING AND GUSTY WINDS CONTINUE. DRB &
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 25, 2:22 PM MST, 2 hours 38 minutes earlier.
Area forecast discussion, Jul 25, 2:22 PM MST, 2 hours 38 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 220 PM MST THU JUL 25 1996 AT 21Z TUS DEW PT STILL HOLDG AT 17C WITH CONVECTION DEVELOPG ALQDS. AS PER MORNING DISCUSSION...STG DOWNBURST WIND AND FLASH FLOODING STILL PSBL OVR ALL OF CWA TGNT. ALL MODELS TENDG TO MOV UPR HI TO 4 CORNERS AREA FRI AND SAT. THIS TO PRODUCE SELY FLOW AT H5. THIS PSBLY TO INCR MSTR FROM MEXICO. NGM FCST SOUNDG FOR FRI SIMILAR TO TDA...XCP WETTER WITH PW MUCH HIER AT 1.8. ALSO FCST CAPE GTR THAN 2000 ALONG MEX BORDER W OF OLS. THUS ANOTHER ROUND OF SVR LIKELY. MIN TEMPS WILL DEPEND ON LOCATION OF TSTMS AND OUTFLOWS. EXPECT MINS IN ZN23 TO DROP ANYWHERE FROM 3-8 DEGREES TGNT.
In the hours before
Special weather statement, Jul 25, 2:29 PM MST, 2 hours 31 minutes before
AZZ026-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 232 PM MST THU JUL 25 1996 ...SEVERE THUNDERSTORM WARNING FOR NORTHWEST COCHISE COUNTY WAS ALLOWED TO EXPIRE AT 230 PM... AT 225 PM TUCSON DOPPLER RADAR INDICATED THAT THE SEVERE THUNDERSTORM NEAR BENSON HAS WEAKENED BELOW SEVERE LIMITS. MOVEMENT OF THE STORMS IS TO THE SOUTH AROUND 10 MPH AND WILL CONTINUE TOWARD ST. DAVID BY 245 PM. A SPOTTER NEAR BENSON REPORTED ONE INCH DIAMETER HAIL FROM THIS STORM. ADDITIONAL SEVERE WEATHER IS POSSIBLE FROM THIS STORM AS IT CONTINUES TO MOVE SOUTN ACROSS WEST-CENTRAL COCHISE COUNTY. GLUECK &
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 8:45 PM MST | Flash Flood Warning | TWC | Pinal | 75 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.