Alert archive / Arizona / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 55, NWS Tucson, AZ

September 27, 1995Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Sep 27, 1995, 11:41 PM MST for Pima County, Arizona. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Sep 27, 1995, 11:41 PM MST (06:41 UTC)
Expired
Sep 28, 1995, 12:30 AM MST
In force
49 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 6.7 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.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 1995-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 923 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 1995-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
923 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
2346 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTUS 280643 RRA
SVRTUS
AZC019-280730-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
1141 PM MST WED SEP 27 1995
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230 AM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...SOUTH CENTRAL AND SOUTHEAST PIMA COUNTY
 
AT 1140 PM TUCSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORMS 10
MILES SOUTH OF SELLS AND NEAR SASABE. THESE THUNDERSTORMS ARE MOVING
NORTH AT 25 TO 30 MPH AND WILL MOVE INTO SELLS...SASABE AND ARIVACA
AREAS WITHIN THE NEXT HALF HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 57
MPH...$DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What 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 27, 5:55 PM MST, 5 hours 46 minutes before
AZZ009-280200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
553 PM MST WED SEP 27 1995

...STRONG THUNDERSTORMS OVER I-10 NORTHWEST OF TUCSON...

AT 552 PM MST TUCSON DOPPLER RADAR AND LIGHTNING DETECTORS
INDICATED A STRONG THUNDERSTORM FORMING OVER I-10 JUST NORTHWEST
OF TUCSON...WITH ANOTHER AREA OF STORMS MOVING OVER I-10 NEAR
THE PIMA/PINAL COUNTY LINE.  STORM MOVEMENT WAS TO THE NORTH
AT ABOUT 15 MPH.

MOTORISTS MOVING THROUGH THESE AREAS OF I-10 MAY EXPERIENCE
REDUCED VISIBILITIES DUE TO HEAVY RAIN ALONG WITH SOME GUSTY
WINDS AND FREQUENT LIGHTNING.

MEYER
Special weather statement, Sep 27, 11:09 PM MST, 32 minutes before
AZZ007-009-010-280810-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1109 PM MST WED SEP 27 1995

...STRONG THUNDERSTORMS DEVELOPING IN NORTHERN MEXICO...

AT 1110 PM MST TUCSON DOPPLER RADAR INDICATES STRONG THUNDERSTORMS
DEVELOPING IN MEXICO FROM THE MEXICAN BORDER JUST SOUTH OF SELLS
EXTENDING SOUTHEAST TO 30 MILES SOUTH OF NOGALES.

THE THUNDERSTORMS ARE MOVING NORTH AT 20 TO 25 MPH AND ARE
INCREASING IN BOTH AREAL COVERAGE AND INTENSITY. THE THUNDERSTORMS
SHOULD MOVE INTO THE SELLS AND NOGALES AREAS WITHIN THE NEXT HOUR.

PERSONS IN SOUTHEAST ARIZONA SHOULD BE ALERT TO THESE THUNDERSTORMS
AS THEY MOVE THROUGH THE AREA TONIGHT. SOME OF THESE STORMS MAY CONTAIN
SMALL HAIL...GUSTY WINDS...DEADLY LIGHTNING AND VERY HEAVY DOWNPOURS OF
RAIN.

HOLBROOK

WTPN32PGTW
Special weather statement, Sep 27, 11:12 PM MST, 29 minutes before
AZZ007-009-010-280810-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1109 PM MST WED SEP 27 1995

...STRONG THUNDERSTORMS DEVELOPING IN NORTHERN MEXICO...

AT 1110 PM MST TUCSON DOPPLER RADAR INDICATES STRONG THUNDERSTORMS
DEVELOPING IN MEXICO FROM THE MEXICAN BORDER JUST SOUTH OF SELLS
EXTENDING SOUTHEAST TO 30 MILES SOUTH OF NOGALES.

THE THUNDERSTORMS ARE MOVING NORTH AT 20 TO 25 MPH AND ARE
INCREASING IN BOTH AREAL COVERAGE AND INTENSITY. THE THUNDERSTORMS
SHOULD MOVE INTO THE SELLS AND NOGALES AREAS WITHIN THE NEXT HOUR.

PERSONS IN SOUTHEAST ARIZONA SHOULD BE ALERT TO THESE THUNDERSTORMS
AS THEY MOVE THROUGH THE AREA TONIGHT. SOME OF THESE STORMS MAY CONTAIN
SMALL HAIL...GUSTY WINDS...DEADLY LIGHTNING AND VERY HEAVY DOWNPOURS OF
RAIN.

HOLBROOK

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 27, 5:10 PM MSTSevere Thunderstorm WarningTWCCochise, Pima65 min
Sep 28, 12:01 AM MSTTornado WarningTWCPima29 min
Sep 28, 12:17 AM MSTSevere Thunderstorm WarningTWCPima43 min
Sep 28, 12:32 AM MSTSevere Thunderstorm WarningTWCPima43 min
Sep 28, 12:52 AM MSTSevere Thunderstorm WarningTWCCochise68 min
Sep 28, 1:00 AM MSTSevere Thunderstorm WarningTWCPima60 min
Sep 28, 1:31 AM MSTFlash Flood WarningTWCPima119 min
Sep 28, 1:55 AM MSTSevere Thunderstorm WarningTWCPima50 min
Sep 28, 2:44 AM MSTSevere Thunderstorm WarningTWCCochise46 min
Sep 28, 3:31 AM MSTFlash Flood WarningTWCPima, Santa Cruz119 min
Sep 28, 4:41 AM MSTSevere Thunderstorm WarningTWCCochise, Pima64 min
Sep 28, 6:15 AM MSTSevere Thunderstorm WarningTWCGraham2 hr
Sep 28, 7:25 AM MSTSevere Thunderstorm WarningTWCGraham50 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1995Every severe thunderstorm warning in 1995

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.