Alert archive / Arizona / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 25, NWS Phoenix, AZ

August 2, 2000Gila County, Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 2, 2000, 5:50 PM MST for Gila County, Maricopa County, Arizona. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Aug 2, 2000, 5:50 PM MST (00:50 UTC)
Expired
Aug 2, 2000, 6:35 PM MST
In force
45 min
Issued by
NWS Phoenix, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Gila County, AZ, Maricopa County, AZ

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 0.8 hours before the alert went out and 87 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, Phoenix, AZ at 00:00Z on 2000-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 122 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, Phoenix, AZ at 00:00Z on 2000-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
122 J/kg
Mixed-layer CIN
-305 J/kg
Mixed-layer LCL
3267 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
48 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 
WUUS55 KPSR 030054
SVRPHX
AZC007-013-030135-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
550 PM MST WED AUG 2 2000

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA
  

* UNTIL 635 PM MST

* AT 547 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES EAST OF PUNKIN CENTER...OR ABOUT 12   
  MILES NORTH OF ROOSEVELT...MOVING WEST AT 20 MPH.  

SEVERE THUNDERSTORMS WILL AFFECT THE PUNKIN CENTER AREA...LAKE 
ROOSEVELT...AND PORTIONS OF HIGHWAY 88 FROM ROOSEVELT LAKE TO
17 MILES NORTHWEST OF GLOBE.   

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.A

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN PHOENIX.

LAT...LON 3350 11085 3395 11114 3390 11141 3345 11111

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.

NWS Phoenix, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 2, 2:45 PM MST, 3 hours 5 minutes earlier.

Area forecast discussion, Aug 2, 2:45 PM MST, 3 hours 5 minutes before
AZZ020>028-CAZ030>033-030545-

SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
245 PM MST WED AUG 2 2000

.SYNOPSIS...
A DISTURBANCE OVER NORTHERN ARIZONA AND NORTHERN BAJA WILL BRING A
CHANCE OF THUNDERSTORMS TO SOUTHWEST AND SOUTH CENTRAL ARIZONA AS
WELL AS SOUTHEAST CALIFORNIA TONIGHT. OTHERWISE...HIGH PRESSURE ALOFT
WILL REMAIN CENTERED OVER THE FOUR CORNERS FOR AT LEAST THE NEXT
COUPLE OF DAYS. THIS WILL BRING PARTLY CLOUDY SKIES TO SOUTHWEST
ARIZONA AND SOUTHEAST CALIFORNIA THE REST OF WEEK...AND MOSTLY CLEAR
SKIES OVER THE WEEKEND AS THE FLOW BECOMES MORE SOUTHWESTERLY. ENOUGH
MOISTURE AND INSTABILITY WILL REMAIN OVER PORTIONS OF SOUTH CENTRAL
ARIZONA...MAINLY THE HIGHER TERRAIN...THROUGH THE WEEKEND FOR A
CONTINUED THREAT OF AFTERNOON AND EVENING THUNDERSTORMS.

.DISCUSSION...
MODELS ALL INDICATE THAT UPPER HIGH TO BECOME LOCATED IN 4 CORNERS OR
NORTHWEST NEW MEXICO AREA BY TONIGHT AND REMAIN IN THAT GENERAL AREA
THROUGH FRIDAY. VORTMAX MOVING THROUGH NORTHERN AZ MAY CAUSE ENOUGH
DYNAMICS TO EXTEND INTO NORTHERN EDGES OF SW AND SOUTH CENTRAL
DESERTS TONIGHT. ALSO VORTMAX MOVING ACROSS NORTHERN GULF WITH A JET
STREAK SHOWING UP ON WATER VAPOR MAY BRING A FEW THUNDERSTORMS TO SW
AZ AND SE CA TONIGHT. EASTERLY WAVE IS NOTED SOUTH OF BAJA BUT MOVING
WEST AND RIGHT NOW DOESNT LOOK LIKE MUCH OF AFFECT ON REGION. MODELS
BRING A LITTLE DRIER AIR INTO 4 CORNERS REGION THURSDAY WITH UPPER
HIGH BUT FAIRLY GOOD MOISTURE REMAINS IN NORTHERN MEXICO. THIS KEEPS
8 DEG 850 MB DEW POINT UP INTO SOUTH CENTRAL AZ...FOR CONTINUED
CHANCE OF AFTERNOON / EVENING THUNDERSTORMS NEXT COUPLE OF DAYS. SOME
DRIER AIR IS ALSO INDICATED TO DROP SOUTH INTO SE CA / SW AZ BY
THURSDAY/FRIDAY. THIS SHOULD BRING MOSTLY SUNNY TO PARTLY CLOUDY
SKIES TO THAT AREA. EXTENDED MRF SHOWS UPPER LOW DROPPING DOWN W
COAST BRINGS SOUTHWEST FLOW TO SE CA / SW AZ BY FRIDAY THROUGH THE
WEEKEND TO KEEP ANY THUNDERSTORMS CONFINED TO HIGHER TERRAIN OF SOUTH
CENTRAL AZ. A BIT MORE SOUTHERLY FLOW RETURNS ON MONDAY TO BRING
CHANCE OF THUNDERSTORMS BACK TO ALL OF SOUTH CENTRAL AZ. DRY FLOW
CONTINUES OVER SW AZ AND SE CA.  DKS

Nearby

Severe Thunderstorm Warnings in Arizona, 2000Every severe thunderstorm warning in 2000

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.