Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 57, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Sep 10, 2000, 6:46 PM MST for Maricopa County, Arizona. It was in force for 24 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
- Sep 10, 2000, 6:46 PM MST (01:46 UTC)
- Expired
- Sep 10, 2000, 7:10 PM MST
- In force
- 24 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 1.8 hours before the alert went out and 198 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
- 31 J/kg
- Mixed-layer CIN
- -281 J/kg
- Mixed-layer LCL
- 2399 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 139 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 110146 SVRPHX AZC013-110210- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 646 PM MST SUN SEP 10 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...INCLUDING PORTIONS OF THE PHOENIX METRO AREA. * UNTIL 710 PM MST * AT 640 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR FIREBIRD LAKE MOVING EAST NORTHEAST AT 10 MPH. AREAS LIKELY TO BE AFFECTED INCLUDE AHWATUKEE...CHANDLER...SOUTH TEMPE...GILBERT. A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS OF 55 MPH... LARGE HA;IL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN PHOENIX. $$
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 Sep 10, 2:44 PM MST, 4 hours 2 minutes earlier.
Area forecast discussion, Sep 10, 2:44 PM MST, 4 hours 2 minutes before
AZZ020>028-CAZ030>033-110545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 244 PM MST SUN SEP 10 2000 .SYNOPSIS... A GENERAL WESTERLY WIND FLOW OVER SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA WILL BUCKLE AS A STRONG HIGH PRESSURE SYSTEM BUILDS OVER THE REGION FROM NORTHERN MEXICO THE NEXT SEVERAL DAYS. MEANWHILE...SOME MOISTURE STREAMING NORTHWARD FROM THE GULF OF CALIFORNIA...AND SOME FROM WEAKENING HURRICANE LANE...WILL BRING PARTLY CLOUDY CONDITIONS TO THE REGION AT TIMES THE NEXT COUPLE OF DAYS...ALONG WITH ISOLATED SHOWERS AND THUNDERSTORMS IN SOUTH-CENTRAL ARIZONA BOTH TONIGHT AND MONDAY. AS THE HIGH BUILDS...LOOK FOR HIGHER AFTERNOON TEMPERATURES. .DISCUSSION... THE ONGOING GULF SURGE IS STILL AROUND 6K FT DEEP...BUT THE KYUX VWP HAS SHOWN THE WIND TO BE WEAKENING A BIT IN THE SURGE LAYER...AFTER PEAKING AROUND 16Z OR SO. ISOLATED SHOWERS AND THUNDERSTORMS HAVE DEVELOPED ON OUR COUNTY WARNING AREA BORDER SE OF GILA BEND AND E OF GLOBE. LOOK FOR A FEW MORE TO DEVELOP THIS AFTERNOON AND EVENING... AND WILL KEEP 10-20 PCT POPS IN AZZ023-027-028 AND AZZ024 FOR THIS EVENING. IN AZZ023...LOOK FOR THE E VALLEY TO HAVE THE BEST CHANCE OF ANY SHOWERS OR THUNDERSTORMS. THE SURFACE DEWPOINTS CONTINUE TO BE UP SIGNIFICANTLY ACROSS THE ENTIRE CWA...WITH DESERT READINGS IN THE 60S TO LOW 70S. AS MENTIONED EARLIER...WITH CLOUDS AND SHOWERS ASSOCIATED WITH HURRICANE LANE STILL IN PLACE OVER THE SRN GULF OF CA...KEEPING IT RELATIVELY COOL...THE SURGE IS LIKELY TO CONTINUE FOR AWHILE...AT LEAST THIS EVENING. EXPECT AXIS OF DEFORMATION BETWEEN HURRICANE LANE AND SHORT-WAVE TROUGH IN THE WLYS TO CONTINUE TO BE PULLED NWWD OVER OUR FAR ERN CWA THIS EVENING BY THE WWD-MOVING HURRICANE. THIS SHOULD PROVIDE ENOUGH FORCING TO PRODUCE ISOLATED CONVECTION THIS EVENING... AND AGAIN OVER AZZ024 TOMORROW. AS THE HURRICANE MOVES AWAY...OVERALL AVAILABLE MOISTURE WILL DECREASE...RESULTING IN MOSTLY SUNNY DAYS AND MOSTLY CLEAR NIGHTS AS THE HIGH OVER NRN MEXICO BUILDS MWWD OVER THE REGION. IT ALSO MEANS HOTTER TEMPERATURES IN THE AFTERNOONS. HOWEVER ...LOOK FOR SURFACE RH TO STAY UP A BIT...KEEPING TEMPS IN HAND...BUT LEAVING THINGS A BIT UNCOMFORTABLE OVERALL. WE STILL NEED TO KEEP A WATCHFUL EYE ON HURRICANE LANE...MAKING SURE IT STAYS ON TRACK AND DOES NOT TURN NWD SOONER THAN IS EXPECTED. WILT
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 6:13 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 27 min |
| Sep 10, 7:31 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 29 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.