Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 35, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 7, 2000, 9:21 PM MST for Maricopa County, Arizona. It was in force for 59 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 7, 2000, 9:21 PM MST (04:21 UTC)
- Expired
- Aug 7, 2000, 10:20 PM MST
- In force
- 59 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 4.4 hours before the alert went out and 49 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
- 379 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 2421 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 24 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 080420 SVRPHX AZC013-080520- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 921 PM MST MON AUG 7 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL MARICOPA COUNTY IN CENTRAL ARIZONA * UNTIL 1020 PM MST * AT 905 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN NORTHWEST PHOENIX...MOVING WEST AT 10 MPH. A ROOF WAS REPORTED DAMAGED AND POWER LINES WERE DOWN NEAR 35TH AVE AND BELL. * THE SEVERE THUNDERSTORM WILL AFFECT... WEST PHOENIX AND LAVEEN AT 920 PM BUCKEYE AND SUN CITY AT 930 PM SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. $$ SAS
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 7, 9:15 PM MST, 6 minutes earlier.
Area forecast discussion, Aug 7, 9:15 PM MST, 6 minutes before
AZZ020>028-CAZ030>033-081045- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 915 PM MST MON AUG 7 2000 .SYNOPSIS... THE CHANCE FOR MAINLY LATE AFTERNOON AND NIGHTTIME STORMS WILL CONTINUE OVER SOUTH CENTRAL ARIZONA THIS WEEK AS A MORE TYPICAL MONSOON FLOW PREVAILS. SOUTHWEST ARIZONA WILL HAVE A SLIGHT CHANCE FOR STORMS AS WELL. DAYTIME HIGH TEMPERATURES WILL BE NEAR TO SLIGHTLY ABOVE SEASONAL NORMALS. .DISCUSSION... IT LOOKS LIKE ITS OUR TURN TONIGHT. MORE ABOUT THIS LATER. SEVERAL NOTICEABLE FEATURES GLEANED FROM THE PLOT DATA WILL LEAD TO A VERY ACTIVE NEXT 6 HOURS OVER THE SOUTH CENTRAL AZ DESERTS...THROUGH 10Z. FIRST...THE MONSOON MOISTURE BOUNDARY IS DEEP...WITH THE MOISTURE AXIS EXTENDING FROM JUST EAST OF PRESCOTT...TO JUST WEST OF PHOENIX...SOUTH TO GUAYMAS MEXICO. LOTS OF LOW LEVEL MOISTURE. SECOND...A WEAK UPPER LEVEL TROF (300/250 MB) WAS CURRENTLY MOVING THROUGH CENTRAL AZ IN THE WESTERLIES (SEE VAPOR PICTURES)...WITH A VERY NOTICEABLE DIFLUENT SIGNITURE IN THE PLOT DATA OVER CENTRAL ARIZONA...INCLUDING PHOENIX. WEAK DYNAMICS LED TO SEVERAL 50 THOUSAND FOOT THUNDERSTORMS OVER THE MOGOLLON RIM AND WHITE MOUNTAINS MONDAY AFTERNOON... AND THEIR OUTFLOWS...WHICH MOVED ONTO THE CENTRAL DESERTS...INITIATED LARGE CONVECTION BETWEEN PHOENIX AND TUCSON AFTER 03Z. AT 0345Z.. THUNDERSTORMS BETWEEN BETWEEN PHOENIX AND CASA GRANDE WERE FEEDING ON THE DEEP MOISTURE BOUNDARY...AND WILL BACKBUILD THROUGH 10Z TOWARD GILA BEND AND AJO. FLOOD ADVISORIES HAVE ALREADY BEEN ISSUED... AND WE CONTINUE TO MONITOR FOR SEVERE WEATHER. MODELS CONTINUE TO FORECAST WEAKNESS ALOFT TUESDAY AFTERNOON WITH VERY DEEP MONSOON MOISTURE PROFILES CONTINUING. CURRENT FORECASTS FOR AN ACTIVE MONSOON DAY TUESDAY LOOK OK. NO UPDATES PLANNED. VASQUEZ
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 5:42 PM MST | Severe Thunderstorm Warning | PSR | Gila | 48 min |
| Aug 7, 6:50 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 65 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.