Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 10, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jun 20, 2000, 4:05 PM MST for La Paz County, Arizona. It was in force for 75 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
- Jun 20, 2000, 4:05 PM MST (23:05 UTC)
- Expired
- Jun 20, 2000, 5:20 PM MST
- In force
- 75 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County La Paz County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 4:30 PM MST | Thunderstorm Wind 50 E | Salome, AZ | Winds brought down trees and power lines,along with blowing dust and sand. |
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
Yuma Intl Airpor, AZ (KYUM), launched 12:00Z, 11.1 hours before the alert went out and 133 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
- 33 J/kg
- Mixed-layer CIN
- -408 J/kg
- Mixed-layer LCL
- 2180 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- -37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
764 WUUS55 KPSR 202303 SVRPHX AZC012-210020- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 405 PM MST TUE JUN 20 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL LA PAZ COUNTY IN WEST CENTRAL ARIZONA * UNTIL 520 PM MST * AT 4 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED SEVERE THUNDERSTORMS NEAR THE TOWNS OF WENDEN...SALOME...AND VICKSBURG JCT...MOVING WEST AT 8 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT THE TOWNS WENDEN...SALOME... VICKSBURG JUNCTION...BRENDA...AND SURROUNDING AREAS. DAMAGING WINDS TO 60 MPH AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS 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 Jun 20, 3:25 PM MST, 40 minutes earlier.
Area forecast discussion, Jun 20, 3:25 PM MST, 40 minutes before
AZZ020>028-CAZ030>033-210545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 325 PM MST TUE JUN 20 2000 .SYNOPSIS... MOISTURE-LADEN AIR FROM THE GULF OF CALIFORNIA AND FROM MEXICO HAS SPREAD OVER ALL OF SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA. THIS WILL CONTINUE TO LEAD TO A CHANCE FOR SHOWERS AND THUNDERSTORMS ACROSS THE AREA THROUGH WEDNESDAY NIGHT. LOCALLY HEAVY RAINFALL IS POSSIBLE ESPECIALLY ON WEDNESDAY AS AN UPPER-AIR DISTURBANCE APPROACHES THE AREA. THUNDERSTORMS ARE STILL POSSIBLE OVER SOUTH CENTRAL ARIZONA THURSDAY...BUT MOST STORMS ARE EXPECTED TO REMAIN OVER HIGHER TERRAIN OF SOUTH CENTRAL ARIZONA FRIDAY THROUGH SUNDAY. .DISCUSSION... VERY ACTIVE CONVECTIVE DAY OVER SOUTH-CENTRAL ARIZONA...WITH LOCALLY HEAVY RAINFALL...HAIL...AND GUSTY WINDS ALL OBSERVED WITH STORMS. MOISTURE AND INSTABILITY CONTINUES TO INCREASE OVER WESTERN HALF OF CWA AS UPPER DISTURBANCE SLOWLY APPROACHES AREA...AND OUTFLOW FROM STORMS CURRENTLY PUSHING INTO FAR WESTERN ARIZONA. THIS IS REFLECTED IN ZONE TRENDS OVER SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA NEXT 24-30 HOURS. LOCALLY HEAVY RAINS WILL CONTINUE TO BE A GREAT CONCERN AS CWA REMAINS UNDER WEAK TROUGH AT MID LEVELS WEDNESDAY AND WEDNESDAY NIGHT. NO CLEARCUT DIURNAL TREND TO ACTIVITY...SO FORECAST IS BROADBRUSHED A BIT MORE THAN I WOULD LIKE. WILL KEEP A CHANCE FOR STORMS OVER SOUTHCENTRAL AZ THURSDAY AS TROUGH AND ABUNDANT MOISTURE LINGER OVER AREA...BUT BEST UPPER SUPPORT MAY MOVE JUST NORTH OF OUR CWA BY THEN. IN EXTENDED...AM HESITANT TO REMOVE STORMS FROM SOUTH CENTRAL AZ...ESPECIALLY HIGHER TERRAIN LOCATIONS...AS IT IS DOUBTFUL THAT LOW LEVEL MOISTURE WILL DISPLACED BY DRIER AIR. HOWEVER...UPPER RIDGE FORECAST TO STRENGTHEN OVERHEAD AND TO OUR SOUTHEAST AS CARLOTTA MOVES NORTHWESTWARD...AND THIS WOULD TEND TO REMOVE THREAT FOR STORMS OVER LOWER DESERT BY THIS WEEKEND. DG
In the hours before
Special weather statement, Jun 20, 11:01 AM MST, 5 hours 4 minutes before
AZZ021>024-026>028-210000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 1101 AM MST TUE JUN 20 2000 SLIGHT RISK FOR HAZARDOUS WEATHER OVER MARICOPA...NORTHERN PINAL ...SOUTHERN GILA...EASTERN LA PAZ...AND EASTERN YUMA COUNTIES TODAY AND TONIGHT... CITIES INCLUDED IN THE SLIGHT RISK AREA INCLUDE THE GREATER PHOENIX METROPOLITAN AREA...GILA BEND...WICKENBURG...CASA GRANDE... SUPERIOR...FLORENCE...COOLIDGE...APACHE JUNCTION...GLOBE...MIAMI... WENDEN...AND DATELAND. THE MOST LIKELY FORM OF HAZARDOUS WEATHER...OTHER THAN INTENSE CLOUD TO GROUND LIGHTNING...WILL BE LOCALLY HEAVY RAINFALL. STRONG... POSSIBLY DAMAGING...STRAIGHT LINE WINDS ARE ALSO POSSIBLE WITH THE MOST INTENSE STORMS. BLOWING DUST COULD BE A PROBLEM ESPECIALLY OVER DESERT LOCATIONS. THE ATMOSPHERE OVER SOUTHWEST AND SOUTH CENTRAL ARIZONA REMAINS VERY MOIST AND UNSTABLE. A WEAK UPPER DISTURBANCE WILL MOVE SLOWLY NORTH AND PROVIDE THE DYNAMIC SUPPORT FOR SCATTERED THUNDERSTORM DEVELOPMENT OVER THE SLIGHT RISK AREA. STORMS WILL BE SLOW MOVING SINCE STEERING FLOW IS LIGHT...BUT WILL GENERALLY MOVE FROM SOUTH TO NORTH. THE HAZARDOUS WEATHER OUTLOOK GIVES PRELIMINARY INFORMATION FOR THE POSSIBILITY OF WEATHER THAT COULD BECOME SEVERE...DAMAGING WINDS IN EXCESS OF 57 MPH...DENSE BLOWING DUST WITH VISIBILITY LESS THAN 1/4 MILE...HAIL 3/4 INCH IN DIAMETER OR LARGER...AND HEAVY RAINFALL THAT COULD CAUSE FLOODING OR RUNNING WASHES. WHEN SEVERE WEATHER OR FLOODING BEGINS...IMPORTANT LIFE SAVING INFORMATION WILL BE PROVIDED IN SHORT TERM FORECASTS...SEVERE WEATHER AND FLOOD WARNINGS...AND IN FOLLOW-UP STATEMENTS. STORM SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY. DG
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 9:44 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 36 min |
| Jun 20, 12:34 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 61 min |
| Jun 20, 1:14 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 61 min |
| Jun 20, 1:33 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 67 min |
| Jun 20, 3:09 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 61 min |
| Jun 20, 3:45 PM MST | Flash Flood Warning | PSR | Maricopa | 20 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.