Alert archive / Arizona / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 9, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Sep 14, 1990, 5:55 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 14, 1990, 5:55 PM MST (00:55 UTC)
- Expired
- Sep 14, 1990, 7:00 PM MST
- In force
- 65 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
Counties Pima County, AZ, Santa Cruz County, AZ
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 14, 6:00 PM MST | Thunderstorm Wind 0 | Pima, AZ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 0.9 hours before the alert went out and 56 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
- 1368 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1990 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KTUS 150055
SVRTUS
AZC019-023-150200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
555 PM MST FRI SEP 14 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND FLASH FLOOD WARNING EFFECTIVE UNTIL 700 PM MST FOR PEOPLE
IN THE FOLLOWING COUNTIES
IN THE SOUTH CENTRAL PART OF ARIZONA
EXTREME SOUTHERN PIMA...
IN THE EXTREME SOUTH PART OF ARIZONA
WESTERN SANTA CRUZ...
AT (545 PM MST SEVERE THUNDERSTORMS WITH FLASH FLOOD PRODUCING
RAINFALL WERE LOCATED OVER WESTERN SANTA CRUZ AND EXTREME SOUTHERN
PIMA COUNTY...FROM INTERSTATE 19 WEST TOWARD ARIVACA AND SASABE.
THESE STORMS HAVE CAUSED FLOODING IN NOGALES AND RIO RICO AND ARE
MOVING TOWARD THE SOUTHWEST AT 20 MPH. STRONG DAMAGING WINDS IN
EXCESS OF 60 MPH AND FLOODING OF WASHES AND HIGHWAY DIPS ALONG
COUNTY ROADS WILL CONTINUE FOR THE NEXT HOUR OR SO.
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
I;NDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING
TELEPHONES AND ELECTRICAL EQUIPMENT.
WEBER 150054ZWhat 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 14, 12:43 PM MST, 5 hours 12 minutes before
AZZ010-142130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1240 PM MST FRI SEP 14 1990 TUCSON WEATHER RADAR INDICATES SEVERAL THUNDERSTORMS ALONG THE NORTHERN BORDER OF MEXICO JUST EAST OF NOGALAS TO JUST NORTH OF DOUGLAS. THESE STORMS ARE MOVING SOUTHWEST AT ABOUT 20 MPH AND ARE LIKELY EFFECTING THE DOUGLAS AREA AT THIS TIME. OTHER COMMUNITIES TO THE WEST AND SOUTHWEST OF DOUGLAS INCLUDING BISBEE AND WARREN COULD BE EFFECTED OVER THE NEXT COUPLE HOURS. AS THE AFTERNOON PROGRESSES NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS THE SOUTHEASTERN COUNTIES IN ARIZONA INCLUDING COCHISE... SANTA CRUZ AND PIMA. SOME OF THE STORMS COULD BE QUITE STRONG AND PERSONS IN THESE AREAS :SHOULD STAY ABREAST OF RAPIDLY CHANGING WEATHER CONDITIONS. NORDQUIST
Special weather statement, Sep 14, 12:49 PM MST, 5 hours 6 minutes before
AZZ010-142130- SPECIAL WEATHER STATEMENT...CORRECTION SPELLING... NATIONAL WEATHER SERVICE TUCSON AZ 1240 PM MST FRI SEP 14 1990 TUCSON WEATHER RADAR INDICATES SEVERAL THUNDERSTORMS ALONG THE NORTHERN BORDER OF MEXICO JUST EAST OF NOGALES TO JUST NORTH OF DOUGLAS. THESE STORMS ARE MOVING SOUTHWEST AT ABOUT 20 MPH AND ARE LIKELY EFFECTING THE DOUGLAS AREA AT THIS TIME. OTHER COMMUNITIES TO THE WEST AND SOUTHWEST OF DOUGLAS INCLUDING BISBEE AND WARREN COULD BE EFFECTED OVER THE NEXT COUPLE HOURS. AS THE AFTERNOON PROGRESSES NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS THE SOUTHEASTERN COUNTIES IN ARIZONA INCLUDING COCHISE... SANTA CRUZ AND PIMA. SOME OF THE STORMS COULD BE QUITE STRONG= AND PERSONS IN THESE AREAS SHOULD STAY ABREAST OF RAPIDLY CHANGING WEATHER CONDITIONS. NORDQUIST
Special weather statement, Sep 14, 3:05 PM MST, 2 hours 50 minutes before
AZZ010-142300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 250 PM MST FRI SEP 14 1990 TUCSON WEATHER RADAR INDICATES SEVERAL THUNDERSTORMS IN CENTRAL AND WESTERN COCHISE COUNTY AND ALONG THE MEXICAN BORDER FROM NOGALES TO BISBEE. A STRONG THUNDERSTORM IS LOCATED 20 MILES NORTHESAST OF TUCSON. THIS STORM IS MOVING SOUTHWEST AT ABOUT 15 MPH BUT HAS WEAKENED SOMEWHAT DURING THE LAST 15 MINUTES. SOME STORMS COULD MOVE IN THE TUCSON METROPOLITAN DURING THE NEXT FEW HOURS. ALL PEOPLE OUT AND ABOUT INCLUDING LATE AFTERNOON RUSH HOUR TRAFFIC ARE URGED TO WATCH FOR ANY APPROACHING STORMS AND USE EXTREME CAUTION. MAZUR
Special weather statement, Sep 14, 5:50 PM MST, 5 minutes before
AZZ010-150145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 545 PM MST FRI SEP 14 1990 AT 545 WEATHER RADAR INDICATES SEVERAL THUNDERSTORMS IN EXTREME EASTERN PIMA COUNTY AND THE WESTERN AREA OF SANTA CRUZ COUNTY. MODERATE TO HEAVY RAIN IS OCCURING IN THE AREA FROM TUMACACORI TO NOGALES AND WESTWARD. HEAVY RAIN HAS BEEN REPORTED IN NOGALES DURING THE LAST HOUR. ANOTHER STRONG THUNDERSTORM IS LOCATED ABOUT 20 MILES NORTHEAST OF6 TUCSON AND IS EXPECTED TO MOVE INTO THE TUCSON METROPOLITAN THRU THE REDDINGTON PASS DURING THE NEXT FEW HOURS. ALL MOTORIST AND OTHER INTERESTS ARE URGED TO WATCH FOR ANY APPROACHING STORMS AND USE EXTREME CAUTION. MAZUR
Special weather statement, Sep 14, 5:54 PM MST, 1 minute before
AZZ010-150145- SPECIAL WEATHER STATEMENT - CORRECTION NATIONAL WEATHER SERVICE TUCSON AZ 545 PM MST FRI SEP 14 1990 AT 545 WEATHER RADAR INDICATES SEVERAL THUNDERSTORMS IN EXTREME EASTERN PIMA COUNTY AND THE WESTERN AREA OF SANTA CRUZ COUNTY. MODERATE TO HEAVY RAIN IS OCCURING IN THE AREA FROM TUMACACORI TO NOGALES AND WESTWARD. HEAVY RAIN HAS BEEN REPORTED IN NOGALES DURING THE LAST HOUR. ANOTHER STRONG THUNDERSTORM IS LOCATED ABOUT 20 MILES 8NORTHEAST OF TUCSON AND IS EXPECTED TO MOVE INTO THE TUCSON METROPOLITAN AREA THRU THE REDDINGTON PASS DURING THE NEXT FEW HOURS. ALL MOTORIST AND OTHER INTERESTS ARE URGED TO WATCH FOR ANY APPROACHING STORMS AND USE EXTREME CAUTION. MAZUR
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 5:55 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 65 min |
| Sep 14, 6:31 PM MST | Flash Flood Warning | TWC | Pima | 59 min |
| Sep 14, 6:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 59 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.