Alert archive / Arizona / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 8, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm 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
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KTUS 032118
SVRTUS
AZC019-032215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
218 PM MST MON SEP 3 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND FLASH FLOOD WARNING EFFECTIVE UNTIL 315 PM MST FOR PEOPLE
IN THE FOLLOWING COUNTY
IN THE SOUTH CENTRAL PART OF ARIZONA
WESTERN PIMA
AT 215 PM MST RADAR INDICTED SEVERE THUNDERSTORMS OVER WESTERN PIMA
COUNTY NEAR AJO. THESE THUNDERSTORMS MAY BE PRODUCING LARGE HAIL
AND DAMAGING WINDS IN EXCESS OF 60 MPH. REPORTS FROM AJO INDICATED
WASHES WERE RUNNING FROM EARLIER STORMS...SO FLASH FLOODING IS
LIKELY WITH THESE STORMS.
IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND LIGHTNING.
INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS...
STAY AWAY FROM HIGH OBJECTS. MOVE INDOORS IF POSSIBLE.# WHEN
INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING
TELEPHONES AND ELECTRICAL EQUIPMENT.
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY.
WEBER 032116ZWhat forecasters said that day
The local office's own words before this severe thunderstorm 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 | Flash Flood Warning | TWC | Pima | 57 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1990Every severe thunderstorm 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.