Alert archive / Arizona / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 30, NWS Phoenix, AZ

August 6, 2000Gila County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 6, 2000, 5:07 PM MST for Gila County, Arizona. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 6, 2000, 5:07 PM MST (00:07 UTC)
Expired
Aug 6, 2000, 6:10 PM MST
In force
63 min
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Gila County, AZ

The radar

The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 00:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 0.1 hours before the alert went out and 115 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 2000-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 368 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2000-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
368 J/kg
Mixed-layer CIN
-214 J/kg
Mixed-layer LCL
2681 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
30 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 070007
SVRPHX
AZC007-070110-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
507 PM MST SUN AUG 6 2000

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL GILA COUNTY IN CENTRAL ARIZONA...

* UNTIL 610 PM MST

* AT 505 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  SEVERE THUNDERSTORMS 6 MILES NORTHEAST OF GLOBE...MOVING SOUTHWEST
  10 TO 15 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT THE CITIES OF...
   GLOBE
   MIAMI
   AND VICINITY

THESE ARE DANGEROUS THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS...LARGE HAIL...AND VERY HEAVY RAIN.  THESE STORMS
HAVE A HISTORY OF PRODUCING GOLF BALL SIZED HAILSTONES NEAR
SAN CARLOS.  GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS!

HV

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 6, 2:50 PM MST, 2 hours 17 minutes earlier.

Area forecast discussion, Aug 6, 2:50 PM MST, 2 hours 17 minutes before
AZZ020>028-CAZ030>033-070545-

SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
250 PM MST SUN AUG 6 2000

.SYNOPSIS...
THE CHANCE FOR MAINLY LATE AFTERNOON AND NIGHTTIME STORMS WILL
CONTINUE OVER SOUTH CENTRAL ARIZONA INTO AT LEAST THE MIDDLE OF NEXT
WEEK AS A MORE TYPICAL MONSOON FLOW BECOMES ESTABLISHED. IN
ADDITION...SOUTHWEST ARIZONA WILL SEE A SLIGHT CHANCE FOR STORMS
THROUGH MID WEEK. DAYTIME HIGH TEMPERATURES WILL RANGE FROM A BIT
BELOW TO SLIGHTLY ABOVE SEASONAL NORMALS.

.DISCUSSION...
CONVECTION NOW BREAKING OUT NICELY ALONG THE MOGOLLON RIM TO THE N
AND E OF THE CWA...AND THE STEERING FLOW ALOFT IS WEAKLY FROM THE
NE...WHICH IS SOMEWHAT FAVORABLE FOR HELPING STEER THE STORMS DOWN
OFF THE HIGHER TRRN INTO THE SCNTRL DESERTS. MOISTURE REMAINS HIGH
OVER THE DESERTS...WITH DEWPOINTS IN THE 60S...SO STORMS COMING OFF
THE MOUNTAINS ARE MOVING INTO A MORE FAVORABLE ENVIRONMENT AND SHOULD
BE ABLE TO SUSTAIN THEMSELVES. ALSO..OUTFLOWS FROM THESE STORMS
SHOULD BE ABLE TO TRIGGER NEW CONVECTION OVER THE DESERTS. ONLY FLY
IN THE OINTMENT IS THAT THE BOUNDARY LAYER IS 5 TO 10 DEGREES COOLER
COMPARED TO YESTERDAY...THE RESULT OF PREVIOUS CONVECTION. AS AS
RESULT...STORMS HAVE YET TO GET GOING OVER THE SE OR SCNTRL..AND THIS
LACK OF HEATING MAY CAUSE THE NIGHT TO BE A DUD. STILL...CALLING FOR
A CHANCE FOR NIGHTTIME STORMS OVER SCNTRL AZ...WITH A SLIGHT CHANCE
TO THE CO RIVER. PROGS GRADUALLY SHIFT THE  HIGH EWD TOMORROW...WITH
THE FLOW ALOFT BECOMING WEAKER...BUT THE DEFORMATION ZONE STAYS MORE
OR LESS IN PLACE WITH CONSIDERABLE MOISTURE SLATED TO BE OVER THE
SERN PART OF THE STATE...AND OVER THE ERN CWA. MESOETA BRINGS
IMPRESSIVE VORT MAX FROM NM INTO SERN AND SCNTRL AZ MON AND THIS
COULD LEAD TO AN UNSETTLED...SHOWERY DAY MON. TROFFING STILL FORECAST
TO SET UP ALONG THE WEST COAST BY TUE...WHICH WILL SHIFT THE HIGH
BACK NEAR THE FOUR CORNERS...AND KEEP THE FAR WRN PARTS OF THE CWA
DRY AND STABLE ENOUGH TO PRECLUDE ANY STORM DEVELOPMENT...WITH THE
CHANCES FOR STORMS CONFINED TO THE WRN DESERTS AND THE SCNTRL. WITH A
MORE TYPICAL MONSOON FLOW PATTERN IN PLACE...IN THE WED THRU FRI TIME
PERIOD...WILL CALL FOR THE STANDARD MONSOON FORECAST WHICH IS A
CHANCE FOR AFTN AND EVE SHOWERS AND THUNDERSTORMS...MAINLY FOR THE
SCNTRL. 11

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 5:45 PM MSTFlash Flood WarningPSRGila60 min
Aug 6, 6:43 PM MSTSevere Thunderstorm WarningPSRMaricopa47 min
Aug 7, 4:26 PM MSTSevere Thunderstorm WarningPSRGila74 min

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; radar from the NEXRAD Level II archive.