Alert archive / Arizona / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 29, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 30, 2003, 5:01 PM MST for Gila County, Arizona. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 30, 2003, 5:01 PM MST (00:01 UTC)
- Expired
- Jul 30, 2003, 5:45 PM MST
- In force
- 44 min
- Issued by
- NWS Phoenix, AZ
- Area
- Counties, with a storm outline in the text
County Gila County, AZ
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 0.0 hours before the alert went out and 111 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
- 39 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 2529 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS55 KPSR 310001
SVRPSR
AZC007-310045-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
459 PM MST WED JUL 30 2003
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME SOUTH CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA
* UNTIL 545 PM MST
* AT 458 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM OVER SOUTH CENTRAL GILA COUNTY...ABOUT
7 MILES SOUTH OF GLOBE OVER ROUTE 77...MOVING TOWARD
THE SOUTH-SOUTHWEST AT 10 MPH.
DAMAGING MICROBURST WINDS AND LOCALLY HEAVY RAIN ARE LIKELY WITH
THIS STORM. HAIL IS ALSO POSSIBLE. TAKE COVER IN A SUBSTANTIAL
SHELTER UNTIL THE STORM PASSES. IF YOU ARE IN THE PATH OF THE
STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.
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 3336 11086 3328 11066 3309 11068 3302 11078
3312 11087 3325 11093
$$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 Jul 30, 2:38 PM MST, 2 hours 23 minutes earlier.
Area forecast discussion, Jul 30, 2:38 PM MST, 2 hours 23 minutes before
AZZ020>028-CAZ030>033-310545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 238 PM MST WED JUL 30 2003 .SYNOPSIS... HIGH PRESSURE WILL CONTINUE TO MIGRATE TOWARDS THE FOUR CORNERS REGION THE NEXT COUPLE OF DAYS...AND OVER NEW MEXICO BY THE WEEKEND. MEANWHILE...A CLOSED LOW PRESSURE SYSTEM WILL MOVE NORTHWEST TOWARDS SOUTHERN CALIFORNIA BY FRIDAY. THERE WILL BE A CONTINUED CHANCE OF MAINLY AFTERNOON SHOWERS AND THUNDERSTORMS EACH DAY THROUGH FRIDAY. DRYING IS POSSIBLE OVER SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA BY THE WEEKEND...WITH A CONTINUING DAILY THREAT OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS OVER SOUTH-CENTRAL ARIZONA... MAINLY THE HIGHER TERRAIN. .DISCUSSION... CURRENT RADAR PICS THIS AFTERNOON SHOWS THUNDERSTORMS FIRING OFF OVER MUCH OF NRN AZ...INCLUDING THE MOGOLLON RIM AND THE WHITE MTS. STORMS ARE JUST NOW STARTING TO POP OVER SOUTHEAST AZ. NOT A LOT TO ADD TO THIS MORNINGS THOUGHTS REGARDING TONIGHTS WEATHER. THE ATMOSPHERE REMAINS PLENTY MOIST AND BECOMING MORE UNSTABLE BY THE MINUTE AS SKIES HAVE CLEARED RATHER RAPIDLY TODAY FOR SUFFICIENT SURFACE HEATING. AGAIN...FLOW ALOFT IS OUT OF THE EAST/SOUTHEAST... WHICH IS FAVORABLE FOR BRINGING CONVECTION FROM SOUTHEAST AZ INTO THE SOUTH-CENTRAL AND SOUTHWEST AZ. AS FOR UPPER LEVEL SUPPORT...AVN CONTINUES TO SHOW A WEAK VORT LOBE OVER NRN MEX ROTATING AROUND THE CLOSED LOW OFF THE BAJA PENINSULA. THE AVN HAS THIS FEATURE ROTATING THROUGH SRN AZ THIS AFTERNOON/EVENING...WHICH SHOULD HELP TRIGGER STORMS. WILL GO FOR A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS OVER SOUTHEAST CALIFORNIA...AND A CHANCE OF SHOWERS AND THUNDERSTORMS OVER SOUTHWEST AND SOUTH-CENTRAL ARIZONA. ANY STORMS THAT DO DEVELOP AND MAKE THEIR WAY INTO OUR CWA WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL...GUSTY WINDS...AND FREQUENT LIGHTNING. WILL HOLD OFF ANOTHER HOUR OR SO BEFORE DECIDING WHETHER TO GO CATEGORICAL (SCATTERED) FOR MARICOPA COUNTY...NORTHWEST PINAL COUNTY...AND SOUTHERN GILA COUNTY. BEYOND TONIGHT...MODELS CONTINUE TO AGREE ON THE MID TROPOSPHERIC HIGH THAT HAS BEEN OVER NRN CA THE PAST COUPLE OF DAYS MOVING EAST AND SOUTH OVER NEW MEXICO AND POSSIBLY INTO WRN TEXAS. MEANWHILE THE CLOSED LOW OFF THE BAJA PENINSULA WILL CONTINUE TO MOVE NORTHWARD WHERE IT GETS CAUGHT UP IN THE WESTERLIES AND HEADS BACK TOWARD CA. DURING THIS TRANSITION...THE FLOW OVER AZ AND SRN CA WILL BECOME SOUTHERLY. THE GFS HAS A COUPLE OF UPPER LEVEL DIVERGENCE AREAS MOVING NORTHWARD INTO ARIZONA DURING THIS TIME FRAME. THUS...WILL HOLD ONTO THE SLIGHT CHANCE/CHANCE FOR MAINLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS THU/FRI. THE MRF CONTINUES SUGGEST SIGNIFICANT DRYING FOR THIS WEEKEND...AS THE FLOW BECOMES SOUTHWESTERLY OVER OUR WRN CWA UNDER THE INFLUENCE OF THE UPPER LOW. NOT SURE JUST HOW DRY IT WILL GET...BUT WILL SHOW A DECREASING TREND IN ACTIVITY SAT THROUGH EARLY NEXT WEEK. THAT SAID...WILL ALSO HAVE TEMPS WARMING A FEW DEG OVER THAT TIME PERIOD. NOT COMFORTABLE COMPLETELY REMOVING POPS FROM THE EXTENDED...AND WILL HOLD ONTO A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE ERN CWA...MAINLY OVER THE HIGHER TERRAIN OF SOUTH-CENTRAL ARIZONA. OVERALL...NOT A LOT OF CHANGES MADE TO THE FORECAST WEVE BEEN CARRYING FOR THE PAST COUPLE OF DAYS. LW .PSR...NONE.
Hazardous weather outlook, Jul 30, 6:00 AM MST, 11 hours 1 minute before
AZZ020>028-CAZ030>033-310100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 600 AM MST WED JUL 30 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST AND SOUTH-CENTRAL ARIZONA...AND SOUTHEAST CALIFORNIA. .DAY ONE...TODAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.
In the hours before
Local storm report, Jul 30, 3:07 PM MST, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT...ADDITIONAL REPORTS...
NATIONAL WEATHER SERVICE PHOENIX, AZ
307 PM MST WED JUL 30 2003
TIME(MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0830 PM PHOENIX AZ WIND DAMAGE
07/29/03 MARICOPA TREES AND POWER LINES
DOWN. POWER OUTAGE AFFECTED
21000 PEOPLE. REPORTED BY
ARIZONA PUBLIC SERVICE
0920 PM BUCKEYE AZ WIND DAMAGE
07/29/03 MARICOPA POWER LINES DOWN. REPORTED
BY ARIZONA PUBLIC SERVICE.Nearby
Severe Thunderstorm Warnings in Arizona, 2003Every severe thunderstorm warning in 2003
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.