Alert archive / Arizona / Flash Flood Warnings in 1990
Flash Flood Warning 16, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 3, 1990, 2:18 PM MST for Pima County, Arizona. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Sep 3, 1990, 2:18 PM MST (21:18 UTC)
- Expired
- Sep 3, 1990, 3:15 PM MST
- In force
- 57 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 9.3 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
- 682 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1517 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Sep 3, 1:10 PM MST, 1 hour 8 minutes before
AZZ007>009>010-032200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 105 PM MST MON SEP 3 1990 AT 105 PM WEATHER RADAR SHOWED THUNDERSTORMS DEVELOPING THROUGHOUT SOUTHEASTERN ARIZONA. THE STRONGEST THUNDERSTORMS WERE IN THE AJO AREA IN CENTRAL PIMA COUNTY AND NEAR TUBAC ALONG 1-19 IN SANTA CRUZ COUNTY. THESE STORMS WERE MOVING TOWARD THE WEST AT 10 TO 15 MPH. STRONG POSSIBLY DAMAGING WINDS...HEAVY RAIN WHICH COULD CAUSE FLOODING OF ROADS AND WASHES AND DANGEROUS CLOUD TO GROUND LIGHTNING ARE LIKELY WITH THESE STORMS...SO CAUTION IS ADVISED. IMES
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 1:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 59 min |
| Sep 3, 2:18 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
Nearby
Flash Flood Warnings in Arizona, 1990Every flash flood warning in 1990
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.