Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 28, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 5, 2000, 5:54 PM MST for Pinal County, Arizona. It was in force for 61 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 5, 2000, 5:54 PM MST (00:54 UTC)
- Expired
- Aug 5, 2000, 6:55 PM MST
- In force
- 61 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Pinal County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 6:00 PM MST | Thunderstorm Wind 60 E | Coolidge, AZ | WInds damaged at least one roof in Coolidge and resulted in dense blowing dust near Casa Grande. Visibility was estimated to be less than 50 feet at about 6:10 pm. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 0.9 hours before the alert went out and 92 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
- 336 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 2718 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
373 WUUS55 KPSR 060054 SVRPHX AZC021-060155- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 554 PM MST SAT AUG 5 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN AND NORTH CENTRAL PINAL COUNTY IN CENTRAL ARIZONA * UNTIL 655 PM MST * AT 550 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS NEAR COOLIDGE AND SACATON...MOVING SOUTH AT 10 MPH. * THE SEVERE THUNDERSTORMS WILL AFFECT... COOLIDGE SACATON CASA GRANDE DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS MB
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 5, 2:45 PM MST, 3 hours 9 minutes earlier.
Area forecast discussion, Aug 5, 2:45 PM MST, 3 hours 9 minutes before
AZZ020>028-CAZ030>033-060545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 245 PM MST SAT AUG 5 2000 .SYNOPSIS... AN UPPER-LEVEL DISTURBANCE WILL MOVE SLOWLY ACROSS NORTHERN MEXICO THIS WEEKEND. AS A RESULT...AN INCREASE IN THUNDERSTORM ACTIVITY IS EXPECTED OVER MAINLY SOUTH-CENTRAL ARIZONA TONIGHT. 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. TEMPERATURES WILL LOWER SOMEWHAT DURING THE NEXT FIVE DAYS...BUT REMAIN ABOVE NORMAL. .DISCUSSION... STILL APPEARS THAT TONIGHT COULD BE AN ACTIVE NIGHT OVER THE ERN CWA. ELY WAVE FROM NW MEX TO FAR W TEXAS CONTS TO PUSH WWD AND IS NOW MOVING INTO ERN AZ. VERY IMPRESSIVE APPEARING FEATURE BASED ON IR AND WATER VAPOR IMAGERY...AND IT IS ALREADY KICKING OFF IMPRESSIVE STORMS ALONG THE CNTRL AND ERN RIM...WITH ADDITIONAL ONES FIRING OVER SERN AZ. AS THIS WAVE MOVES WWD...UPPER HIGH HAS SHIFTED WEST WITH THE MEAN WIND IN THE 700-300MB LAYER NOW FROM THE NNE. THIS IS ALLOWING THE STORMS ALONG THE RIM TO MOVE DOWN INTO THE CNTRL DESERTS. DEWPOINTS OVER THE CENTRAL DESERTS ARE STILL A LITTLE ON THE LOW SIDE...GENLY IN THE MID 50S...BUT WITH THE DYNAMICS AND UPPER DIFLUENCE ASSOCD WITH THE ELY WAVE...STILL FEEL THERE IS A CHANCE FOR STORMS TO GET INTO THE ERN CWA...INCLUDING THE PHX METRO...TONIGHT. AMS TOO DRY AND STABLE OVER THE WRN DESERTS...SHOULD SEE MOSTLY CLEAR TO PARTLY CLOUDY SKIES THERE OVERNIGHT. NOT MUCH CHANGE FOR SUNDAY...AS ADDITIONAL INVERTED TROFS/VORT MAXES ARE FORECAST TO AFFECT SERN AZ AND THE ERN CWA...THE STEERING FLOW SHOULD STILL BE NELY...AND THERE SHOULD BE SUFFICIENT MOISTURE AND INSTBY FOR ANOTHER ROUND OF AFTN AND EVE THUNDERSTORMS. WILL CALL FOR A CHANCE FOR EVE TSTMS OVER SCNTRL AZ SUN NIGHT...WITH A SLIGHT CHANCE FOR LATE AFTN STORMS ON MON. FOR THE EXTENDED...TROFFING STARTS TO DEVELOP ALONG THE W COAST...HELPING TO PUSH THE UPPER HIGH BACK TO NEAR THE FOUR CORNERS...AND THEN A BIT E OF THAT POSITION...IN THE TUE THRU THU TIME FRAME. AS THIS HAPPENS THE WRN CWA COMES UNDER THE INFLUENCE OF A SWLY FLOW...WHICH ACTS TO DRY THE AMS SOMEWHAT. AS THIS HAPPENS THE MOISTURE AND INSTABILITY WILL FOCUS OVER THE ERN CWA...AND WE WILL RETURN TO A RATHER LOW GRADE STANDARD MONSOON FORECAST. THAT IS...A CHANCE FOR MAINLY AFTN AND EVE STORMS OVER SCNTRL AZ...WITH MOSTLY CLEAR TO PARTLY CLOUDY SKIES ELSEWHERE. 11
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 4:31 PM MST | Severe Thunderstorm Warning | PSR | Gila | 49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.