Alert archive / Arizona / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 2, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 14, 1990, 2:30 AM MST for Pima County, Arizona. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 14, 1990, 2:30 AM MST (09:30 UTC)
- Expired
- Jul 14, 1990, 4:30 AM MST
- In force
- 2 hr
- 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 00:00Z, 9.5 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
- 13 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 3090 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 14 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 140953 COR
SVRTUS
AZC019-141130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
230 AM MST SAT JUL 14 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND FLASH FLOOD WARNING EFFECTIVE UNTIL 430 AM MST FOR PEOPLE
IN THE FOLLOWING COUNTY
IN THE SOUTH CENTRAL PART OF ARIZONA
EXTREME SOUTHERN PIMA
AT (220 AM ) A VERY STRONG THUNDERSTORM WAS INDICATED BY TUCSON
WEATHER RADAR MOVING SLOWLY TO THE WEST. THE COMMUNITIES OF
ARRIVACA...SASABE...AND SAM MIGUEL ARE PARTICULARLY THREATENED BY
THIS STORM.
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.
THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF WASHES...SMALL
STREAMS...UNDERPASSES AND HIGHWAY DIPS.
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 THUNDERSTORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 60 MILES AN
HOUR...HAIL 3/4 INCH OR LARGER IN DIAMETER AND VERY HEAVY RAINFALL
THAT CAN CAUSE FLOODING OF DIPS AND WASHES.
BARTOLOMEWhat 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, Jul 13, 11:17 PM MST, 3 hours 13 minutes before
AZZ010-140730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1110 PM MST FRI JUN 13 1990 AT 1105PM THE TUCSON WEATHER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN IN THE SIERRA VISTA AND FORT HUACHUCA AREA AND SOUTHWARD TO THE MEXICAN BORDER. THESE STORMS ARE MOVING TO THE SOUTHWEST AT ABOUT 15 MILES AN HOUR AND WILL ALSO MOVE INTO EASTERN SANTA CRUZ COUNTY. PLEASE USE CAUTION WHILE TRAVELING IN THIS AREA IN THE NEXT COUPLE OF HOURS AS SOME DIPS AND WASHES MAY ALREADY BE FLOODED OR BECOME FLOODED. HANSEN NWS TUS
Special weather statement, Jul 14, 1:11 AM MST, 1 hour 19 minutes before
AZZ009-010-140930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 110 PM MST SAT JUN 14 1990 AT 105PM THE TUCSON WEATHER RADAR INDICATED A VERY HEAVY THUNDERSTORM IN THE VICINITY OF TUBAC AND TUMACACORI...AND I-19. THIS STORM WAS GIVING RADAR RETURNS OF QUITE HIGH INTENSITY...INDICATING THE POSSIBILITY OF VERY HEAVY RAINFALL. OTHER THUNDERSTORMS WERE INDICATED OVER SONOITA...AND NEAR NOGALES AND AMADO. THESE STORMS ARE MOVING SLOWLY TO THE WEST PLEASE USE CAUTION WHILE TRAVELING IN THIS AREA IN THE NEXT COUPLE OF HOURS AS SOME DIPS AND WASHES MAY ALREADY BE FLOODED OR BECOME FLOODED. ALSO THERE IS A LOT OF POTENTIALLY DANGEROUS LIGHTNING WITH THIS STORM. BARTOLOME NW)S TUS
Special weather statement, Jul 14, 1:16 AM MST, 1 hour 14 minutes before
AZZ009-010-140930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 110 PM MST SAT JUL 14 1990 AT 105AM THE TUCSON WEATHER RADAR INDICATED A VERY HEAVY THUNDERSTORM IN THE VICINITY OF TUBAC AND TUMACACORI...AND I-19. THIS STORM WAS GIVING RADAR RETURNS OF QUITE HIGH INTENSITY...INDICATING THE POSSIBILITY OF VERY HEAVY RAINFALL. OTHER THUNDERSTORMS WERE INDICATED OVER SONOITA...AND NEAR NOGALES AND AMADO. THESE STORMS ARE MOVING SLOWLY TO THE WEST PLEASE USE CAUTION WHILE TRAVELING IN THIS AREA IN THE NEXT COUPLE OF HOURS AS SOME DIPS AND WASHES MAY ALREADY BE FLOODED OR BECOME FLOODED. ALSO THERE IS A LOT OF POTENTIALLY DANGEROUS LIGHTNING WITH THIS STORM. BARTOLOM/E NWS TUS
Special weather statement, Jul 14, 1:21 AM MST, 1 hour 9 minutes before
AZZ009-010-140930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 110 AM MST SAT JUL 14 1990 AT 105 AM THE TUCSON WEATHER RADAR INDICATED A VERY HEAVY THUNDERSTORM IN THE VICINITY OF TUBAC AND TUMACACORI...AND I-19. THIS STORM WAS GIVING RADAR RETURNS OF QUITE HIGH INTENSITY...INDICATING THE POSSIBILITY OF VERY HEAVY RAINFALL. OTHER THUNDERSTORMS WERE INDICATED OVER SONOITA...AND NEAR NOGALES AND AMADO. THESE STORMS ARE MOVING SLOWLY TO THE WEST. PLEASE USE CAUTION WHILE TRAVELING IN THIS AREA IN THE NEXT COUPLE OF HOURS AS SOME DIPS AND WASHES MAY ALREADY BE FLOODED OR BECOME FLOODED. ALSO THERE IS A LOT OF POTENTIALLY DANGEROUS LIGHTNING WITH THIS STORM. BARTOL1OME NWS TUS
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 2:30 AM MST | Flash Flood Warning | TWC | Pima | 2 hr |
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.