Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 60, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Oct 21, 2000, 3:46 PM MST for Yuma 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
- Oct 21, 2000, 3:46 PM MST (22:46 UTC)
- Expired
- Oct 21, 2000, 4:45 PM MST
- In force
- 59 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Yuma County, AZ
The radar
The Yuma radar (KYUX), 77 km from the middle of the area, began a volume at 22:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Yuma Prvg Ground, AZ (K1Y7), launched 12:00Z, 10.8 hours before the alert went out and 55 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
- 18 J/kg
- Mixed-layer CIN
- -255 J/kg
- Mixed-layer LCL
- 1662 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 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 212246 SVRPHX AZC027-212345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 346 PM MST SAT OCT 21 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN YUMA COUNTY IN SOUTHWESTERN ARIZONA * UNTIL 445 PM MST * AT 335 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR YUMA...MOVING NORTHEAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... NORTH YUMA AND MARTINEZ LAKE BETWEEN 350 PM AND 4 PM. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! 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 Oct 21, 3:15 PM MST, 31 minutes earlier.
Area forecast discussion, Oct 21, 3:15 PM MST, 31 minutes before
AZZ020>028-CAZ030>033-220545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 315 PM MST SAT OCT 21 2000 .SYNOPSIS... A STRONG PACIFIC WEATHER SYSTEM IS FORECAST TO MOVE INTO SOUTHERN CALIFORNIA AND SOUTHWEST ARIZONA BY TONIGHT. IT WILL REMAIN NEARLY STATIONARY THROUGH SUNDAY AND SUNDAY NIGHT. IT WILL BRING A WIDE AREA OF RAIN ALONG WITH SCATTERED THUNDERSTORMS TO SOUTHWEST ARIZONA AND SOUTHEAST CALIFORNIA THROUGH SUNDAY NIGHT AND MONDAY. RAINFALL AMOUNTS COULD BE QUITE HEAVY DURING THAT PERIOD WITH FROM 1 TO 2 INCHES POSSIBLE IN SOME AREAS BY MONDAY MORNING. IT WILL BECOME MORE SHOWERY LATE MONDAY AND TUESDAY...WITH SHOWERS MAINLY OVER CENTRAL ARIZONA EARLY TUESDAY. PARLTY CLOUDY AND WARMER WEATHER IS FORECAST FOR WEDNESDAY AND THURSDAY. .DISCUSSION... THUNDERSTORMS ON THE INCREASE OVER ARIZONA AND FAR EASTERN SOUTHERN CALIFORNIA THIS AFTERNOON. THIS A RELECTION OF STRONG VERTICAL LIFTING AHEAD OF THE DEEPENING TROUGH DIGGING SOUTHWARD OVER THE FAR WESTERN STATES. ALL MODELS PREDICT SOME SIGNIFICANT RAINFALL AMOUNTS OVER THE NEXT 24 TO 36 HOURS. THE HEAVIEST RAINFALL IS FORECAST TO OCCUR AFTER MIDNIGHT IN OUR CWA...ALTHOUGH THE POSSIBILITY OF SOME HEAVY RAIN WITH THUNDERSTORMS THE REMAINDER OF THIS AFTERNOON IS THERE. THE MAIN PROBLEM WITH THUNDERSTORMS THIS AFTERNOON HAS BEEN THE HAIL. THE LOW IS FORECAST TO START LIFTING NORTHWARD OVER WESTERN ARIZONA ON MONDAY...BEFORE PUSHING EASTWARD TUESDAY. SHOWERS SHOULD DIMINISH EASTERN PORTION OF OUR CWA EARLY TUESDAY...WITH PARTLY CLOUDY CONDITIONS ELSEWHERE. BY MIDWEEK...HIGHER PRESSURE SHOULD BRING SOME DRYING...ALTHOUGH MEDIUM RANGE MODELS DIG ANOTHER TROUGH SOUTHWARD BY THURSDAY. WILL LUMP WEDNESDAY AND THURSDAY TOGETHER...ALTHOUGH WILL HAVE TO WAIT AND SEE WHAT LATER MODELS. BERKOVITZ
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; radar from the NEXRAD Level II archive.