Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 23, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 30, 2000, 7:20 PM MST for Maricopa County, Arizona. It was in force for 45 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
- Jul 30, 2000, 7:20 PM MST (02:20 UTC)
- Expired
- Jul 30, 2000, 8:05 PM MST
- In force
- 45 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 2.3 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
- 184 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 3378 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- 19 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 310218 SVRPHX AZC013-310305- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 720 PM MST SUN JUL 30 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN MARICOPA COUNTY IN CENTRAL ARIZONA...MAINLY FOR THE SALT RIVER RECREATIONAL LAKES. * UNTIL 805 PM MST * AT 715 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED SEVERE THUNDERSTORMS NEAR ROOSEVELT DAM... MOVING WEST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT...MAINLY APACHE LAKE WITH LARGE HAIL AND POWERFUL WINDS TO NEAR 60 MPH. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING ANxD STAY AWAY FROM WINDOWS! BOATERS ON THE LAKE TAKE COVER AND HEAD FOR SHORE IMMEDIATELY. 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 Jul 30, 2:45 PM MST, 4 hours 35 minutes earlier.
Area forecast discussion, Jul 30, 2:45 PM MST, 4 hours 35 minutes before
AZZ020>028-CAZ030>033-310545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 245 PM MST SUN JUL 30 2000 .SYNOPSIS... UPPER LEVEL HIGH PRESSURE OVER THE GREAT BASIN REGION WILL GIVE AN EAST NORTHEAST FLOW TO THE ENTIRE FORECAST AREA THIS WEEK. MOISTURE LEVELS ARE EXPECTED TO INCREASE DURING THE NEXT COUPLE OF DAYS...AND REMAIN HIGH ENOUGH TO HELP FEED LATE AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. THIS THUNDERSTORM THREAT WILL EVENTUALLY REACH ALL THE WAY INTO SOUTHEAST CALIFORNIA BY MONDAY NIGHT AND THEREAFTER. MEANWHILE...AFTERNOON TEMPERATURES WILL CONTINUE TO BE NEAR LATE JULY NORMALS. .DISCUSSION... AFTERNOON CONVECTION HAS BEEN QUITE SLOW TO FORM AND SO FAR HAS BEEN PRETTY WIMPY. SATELLITE PIX SHOW WEAK CBS FORMING ALONG MOGOLLON RIM THEN DISSIPATING QUICKLY WITH ANVIL TOPS SCOOTING SWWD. MOISTURE...OR RELATIVE LACK THEREOF...CONTINUES TO BE THE ONLY NEGATIVE FACTOR TO WHAT OTHERWISE SHOULD BE A VERY ACTIVE...POSSIBLY SEVERE...DAY. 12Z MODELS HINTED THAT SOME BRIEF MID LEVEL DRYING HAS OCCURED OVER ERN AZ TODAY...AND WITH THE WIMPY CONVECTION...THIS MAY BE THE CASE. HOWEVER...APPROACHING IMPULSE OVER NM...ALONG WITH OTHER POSSIBLE RIPPLES EMBEDDED IN THE NELY FLOW...HAS US STILL HOPING FOR SOME EVENING DESERT CONVECTION. ISSUED AN HAZARDOUS WEATHER OUTLOOK EARLIER...DUE TO THE SEVERE MICROBURST POTENTIAL WITH ANY STORMS THAT DO PROPOGATE OFF THE RIM OUR DIRECTION THIS EVENING. RAINFALL WITH ANY STORMS TONIGHT WILL BE LIGHT AND SPOTTY DUE TO RELATIVELY DRY LOWER LEVELS. THEREFORE...CUT POPS TO SLIGHT CHANCE VALUES...WITH THE THREAT OF STORMS OCCURING SOMEWHAT HIGHER. RAISED POPS UP TO CHANCE CATEGORIES MONDAY NIGHT AS WE SHOULD BE A LITTLE WETTER BY THEN. ALSO...STARTED TO INTRODUCE SOME MINOR POPS INTO SE CA BY TOMORROW NIGHT AS DEEP E/NELY FLOW COULD TAKE SOME ACTION THAT FAR WEST. THE EXTENDED WILL BE LEFT AzS IS...WITH A CHANCE OF STORMS GOING EACH DAY AS UPPER HIGH TO OUR N STAYS PUT. ESTLE
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 6:36 PM MST | Severe Thunderstorm Warning | PSR | Gila | 39 min |
| Jul 30, 8:03 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 42 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.