Alert archive / Arizona / Flash Flood Warnings in 1997
Flash Flood Warning 10, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 1, 1997, 6:33 PM MST for Pima 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
- Aug 1, 1997, 6:33 PM MST (01:33 UTC)
- Expired
- Aug 1, 1997, 7:30 PM MST
- In force
- 57 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 01:32 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, 1.6 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
- 115 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 2370 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- -29 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 020134 FFWTUS AZC019-020230- BULLETIN FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 633 PM MST FRI AUG 1 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 730 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHERN ARIZONA ...EASTERN PIMA COUNTY...EXTREME SOUTHEAST TUCSON AT 625 PM MST..TUCSON DOPPLER RADAR CONTINUED TO SHOW MODERATE TO HEAVY RAINFALL ACROSS EXTREME SOUTHEAST TUCSON. STORMS CONTINUE TO DEVELOP SOUTHEAST OF THIS AREA ACROSS THE EMPIRE AND WETSTONE MOUNTAINS. MODERATE TO HEAVY RAINFALL IS POSSIBLE WITH THESE STORMS AND THEY MAY MOVE ACROSS THE FLASH FLOOD AREA AFTER 700 PM. THUS THE FLASH FLOOD WARNING HAS BEEN EXTENDED UNTIL 730 PM MST. EARLIER..THE PANTANO WASH AT HARRISON HAS BEEN REPORTED TO BE FLOODING. GLUECK
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 1, 2:30 PM MST, 4 hours 3 minutes earlier.
Area forecast discussion, Aug 1, 2:30 PM MST, 4 hours 3 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST FRI AUG 1 1997 TSTMS BEGAN SHORTLY BEFORE NOON IN COCHISE COUNTY WHERE THE LOW LEVEL MOISTURE WAS THE GREATEST. DEVELOPMENT WAS MUCH MORE RAPID THAN YESTERDAY WITH ECHO TOPS UP TO 54K FT. HAVE HAD ONE SPOTTER REPORT OF 1.5 INCH OF RAIN. ETA SHOWING POTENTIAL FOR CONVECTIVE COMPLEX OVER NWRN MEXICO TO POSSIBLY ADD MORE LOW LEVEL MOISTURE TONIGHT. MM5 INCREASING PRECIP WATER TO 1.5 INCHES TONIGHT. MODELS CONTINUING TO MOVE UPPER HIGH WESTWARD TO CO BY SUN. WITH SELY FLOW...MOISTURE AT 700 AND 500 MB TO MAINTAIN OR INCREASE. MOVEMENT OF HIGH CENTER MAY PRODUCE WIND PROFILE MORE FAVORABLE TO SEVERE WEATHER...BUT THAT IS TOO FAR AHEAD. ETA KEEPS RELATIVLY DRIER AIR OVER FAR SW AZ FOR A VERY STRONG MOISTURE GRADIENT THAT AREA ON SAT. WILL THIS BE A FOCUSING MECHANISM... TUS 4343 TUS...NONE
In the hours before
Special weather statement, Aug 1, 2:49 PM MST, 3 hours 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 249 PM MST FRI AUG 1 1997 AZZ028-020355- ...DUST DEVILS NEAR GREEN VALLEY... A FEW STRONG DUST DEVILS ARE OCCURING SOUTH OF TUCSON IN THE GREEN VALLEY AREA. DUST DEVILS ARE CAPABLE OF WINDS TO 40 MPH. EXPECT BLOWING DUST AND FLYING DEBRIS NEAR THESE DUST DEVILS.
Special weather statement, Aug 1, 2:50 PM MST, 3 hours 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 249 PM MST FRI AUG 1 1997 AZZ028-020355- ...DUST DEVILS NEAR GREEN VALLEY... A FEW STRONG DUST DEVILS ARE OCCURING SOUTH OF TUCSON IN THDE GREEN VALLEY AREA. DUST DEVILS ARE CAPABLE OF WINDS TO 40 MPH. EXPECT BLOWING DUST AND FLYING DEBRIS NEAR THESE DUST DEVILS.
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 2, 3:22 PM MST | Flash Flood Warning | TWC | Cochise | 63 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.