Alert archive / Arizona / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 13, NWS Phoenix, AZ

July 1, 1994Gila County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 1, 1994, 3:48 PM MST for Gila County, Arizona. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jul 1, 1994, 3:48 PM MST (22:48 UTC)
Expired
Jul 1, 1994, 4:30 PM MST
In force
42 min
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Gila County, AZ

The nearest sounding before it

Winslow (Autob), AZ (KINW), launched 12:00Z, 10.8 hours before the alert went out and 136 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, Winslow (Autob), AZ at 12:00Z on 1994-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Winslow (Autob), AZ at 12:00Z on 1994-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3570 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHX 012249
SVRPHX
AZC007-012330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
348 PM MST FRI JUL 1 1994

THE NATIONAL WEATHER SERVICE IN PHOENIX AZ HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM MST FOR PEOPLE IN THE
FOLLOWING LOCATIONS...

IN EAST CENTRAL ARIZONA

  ...NORTHWESTERN GILA COUNTY

AT 347 PM MST, DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM ABOUT 10 MILES
SOUTHEAST OF CAMP VERDE OVER HIGHWAY 260. THIS THUNDERSTORM WAS MOVING
EAST AT 15 MILES AN HOUR. PERSONS LIVING IN THE TOWNS OF STRAWBERRY AND
PINE SHOULD BE PREPARE FOR THIS STORM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 57 MPH
...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

DAVIS

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, Jul 1, 1:00 PM MST, 2 hours 48 minutes before
AZZALL-020430-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
100 PM MST FRI JUL 1 1994

...POSSIBLE SEVERE THUNDERSTORMS...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS NORTHWEST ARIZONA
TODAY AND EARLY TONIGHT.  THE AREA TARGETED FOR SEVERE STORMS IS NORTH
OF A LINE FROM BLYTHE, CA TO 40 MILES WEST-SOUTHWEST OF PRESCOTT TO
FLAGSTAFF TO 45 MILES EAST-SOUTHEAST OF PAGE.

THE MOST LIKELY SEVERE WEATHER THREAT IS STRONG, GUSTY DAMAGING WINDS.
THE DAMAGING WINDS WILL OCCUR AS SMALL INTENSE DOWNBURSTS OR MICROBURSTS
WITH WIND GUSTS IN EXCESS OF 60 MPH.  SMALL HAIL IS POSSIBLE IN THE
DESERT AREAS, WITH PEA SIZE TO MARBLE SIZED HAIL POSSIBLE IN THE HIGHER
MOUNTAIN LOCATIONS.

FREQUENT, INTENSE LIGHTNING WILL ALSO BE ACCOMPANYING THE STORMS, AND
CAUTION IS ADVISED.

PERSONS PLANNING ON BEING OUT AND ABOUT IN ARIZONA TODAY ARE URGED TO BE
ON THE ALERT FOR STRONG THUNDERSTORMS, WHICH MAY BECOME SEVERE IN THE
NORTHWEST PORTION OF THE STATE AS THE DAY WEARS ON.

BENNETT
Special weather statement, Jul 1, 2:22 PM MST, 1 hour 26 minutes before
AZZALL-020000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
230 PM MST FRI JUL 1 1994

...THUNDERSTORMS ARE ON THE INCREASE...

AT 2 PM DOPPLER RADAR AT PHOENIX SHOWED AN INCREASE IN THUNDERSTORM
ACTIVITY ACROSS THE STATE.  THE STRONGEST STORM WAS LOCATED ALONG STATE
ROUTE 69, NEAR MAYER.  THIS THUNDERSTORM APPEARED CAPABLE OF PRODUCING
STRONG GUSTY WINDS, AND BRIEF HEAVY RAIN.  THUS MOTORISTS IN THIS AREA
WILL NEED TO USE CAUTION.

ANOTHER AREA OF RATHER STRONG THUNDERSTORMS WAS LOCATED ALONG THE
MOGOLLON RIM NEAR HEBER.

SCATTERED THUNDERSTORMS WERE ALSO DEVELOPING OVER A GOOD SHARE OF
NORTHWEST ARIZONA, AND FURTHER DEVELOPMENT OF THUNDERSTORMS IS EXPECTED
TO TAKE PLACE.  THERE IS A SLIGHT RISK THUNDERSTORMS IN THIS AREA COULD
BECOME SEVERE LATER THIS AFTERNOON.

PERSONS PLANNING ON BEING OUT AND ABOUT TODAY ARE URGED TO BE ON
THE ALERT FOR STRONG THUNDERSTORMS.

PERFREMENT
Special weather statement, Jul 1, 2:30 PM MST, 1 hour 18 minutes before
AZZALL-020000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
230 PM MST FRI JUL 1 1994

...THUNDERSTORMS ARE ON THE INCREASE...

AT 2 PM DOPPLER RADAR AT PHOENIX SHOWED AN INCREASE IN THUNDERSTORM
ACTIVITY ACROSS THE STATE.  THE STRONGEST STORM WAS LOCATED ALONG STATE
ROUTE 69, NEAR MAYER.  THIS THUNDERSTORM APPEARED CAPABLE OF PRODUCING
STRONG GUSTY WINDS, AND BRIEF HEAVY RAIN.  THUS MOTORISTS IN THIS AREA
WILL NEED TO USE CAUTION.

ANOTHER AREA OF RATHER STRONG THUNDERSTORMS WAS LOCATED ALONG THE
MOGOLLON RIM NEAR HEBER.

SCATTERED THUNDERSTORMS WERE ALSO DEVELOPING OVER A GOOD SHARE OF
NORTHWEST ARIZONA, AND FURTHER DEVELOPMENT OF THUNDERSTORMS IS EXPECTED
TO TAKE PLACE.  THERE IS A SLIGHT RISK THUNDERSTORMS IN THIS AREA COULD
BECOME SEVERE LATER THIS AFTERNOON.

PERSONS PLANNING ON BEING OUT AND ABOUT TODAY ARE URGED TO BE ON
THE ALERT FOR STRONG THUNDERSTORMS.

PERFREMENT
Special weather statement, Jul 1, 3:20 PM MST, 28 minutes before
AZZALL-020000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
330 PM MST FRI JUL 1 1994

AT 315 PM SCATTERED THUNDERSTORMS WERE DEVELOPING OVER MAINLY THE
NORTHERN HALF OF ARIZONA.  DOPPLENR RADAR SHOWED A BRAOD AREA OF RATHER
STRONG THUNDERSTORMS EXTENDING FROM NEAR MAYER EAST THROUGH THE CAMP
Special weather statement, Jul 1, 3:29 PM MST, 19 minutes before
AZZALL-020000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
330 PM MST FRI JUL 1 1994

AT 315 PM SCATTERED THUNDERSTORMS WERE DEVELOPING OVER MAINLY THE
NORTHERN HALF OF ARIZONA.  DOPPLER RADAR SHOWED A BRAOD AREA OF RATHER
STRONG THUNDERSTORMS EXTENDING FROM NEAR MAYER EAST THROUGH THE CAMP
VERDE AREA.  THE STRONGEST CELL IN THIS AREA WAS LOCATED ALONG STATE
ROUTE 260 WEST OF PINE.  MOVEMENT OF THESE THUNDERSTORMS WAS GENERALLY
TOWARD THE EAST OR SOUTHEAST, BETWEEN 15 AND 20 MPH, AND COULD REACH
THE PINE/STRAWBERRY AREA BY AROUND 4 PM MST.

OTHER STRONG THUNDERSTORMS WERE PRESENT ALONG AND NEAR INTERSTATE 40
BETWEEN WILLIAMS AND SELIGMAN, WITH A MAXIMIMUM OF ACTIVITY NEAR
ASH FORK AT 315 PM.

OTHER THUNDERSTORMS OF NOTE WERE LOCATED ALONG THE MOGOLLON RIM, FROM
FLAGSTAFF EAST TO HEBER.

FURTHER DEVELOPMENT AND INTENSIFICATION WILL TAKE PLACE, AND PERSONS
OUT AND ABOUT NORTHERN AND CENTRAL ARIZONA WILL NEED TO USEb CAUTION,
AND FOLLOW CHANGING WEATHER CONDITIONS.

PERFREMENT
Special weather statement, Jul 1, 3:30 PM MST, 18 minutes before
AZZALL-020000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
330 PM MST FRI JUL 1 1994

AT 315 PM SCATTERED THUNDERSTORMS WERE DEVELOPING OVER MAINLY THE
NORTHERN HALF OF ARIZONA.  DOPPLER RADAR SHOWED A BRAOD AREA OF RATHER
STRONG THUNDERSTORMS EXTENDING FROM NEAR MAYER EAST THROUGH THE CAMP
VERDE AREA.  THE STRONGEST CELL IN THIS AREA WAS LOCATED ALONG STATE
ROUTE 260 WEST OF PINE.  MOVEMENT OF THESE THUNDERSTORMS WAS GENERALLY
TOWARD THE EAST OR SOUTHEAST, BETWEEN 15 AND 20 MPH, AND COULD REACH
THE PINE/STRAWBERRY AREA BY AROUND 4 PM MST.

OTHER STRONG THUNDERSTORMS WERE PRESENT ALONG AND NEAR INTERSTATE 40
BETWEEN WILLIAMS AND SELIGMAN, WITH A MAXIMIMUM OF ACTIVITY NEAR
ASH FORK AT 315 PM.

OTHER THUNDERSTORMS OF NOTE WERE LOCATED ALONG THE MOGOLLON RIM, FROM
FLAGSTAFF EAST TO HEBER.

FURTHER DEVELOPMENT AND INTENSIFICATION WILL TAKE PLACE, AND PERSONS
OUT AND ABOUT NORTHERN AND CENTRAL ARIZONA WILL NEED TO USE CAUTION,
AND FOLLOW CHANGING WEATHER CONDITIONS.

PERFREMENT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 4:32 PM MSTSevere Thunderstorm WarningPSRGila63 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1994Every severe thunderstorm warning in 1994

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.