Alert archive / California / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 47, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 22, 2000, 3:06 PM PDT for Imperial County, Riverside County, California. It was in force for 49 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 22, 2000, 3:06 PM PDT (22:06 UTC)
- Expired
- Aug 22, 2000, 3:55 PM PDT
- In force
- 49 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
Counties Imperial County, CA, Riverside County, CA
The radar
The San Diego radar (KNKX), 137 km from the middle of the area, began a volume at 22:11 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 Intl Airpor, AZ (KYUM), launched 12:00Z, 10.1 hours before the alert went out and 130 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3004 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 44 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 222206 SVRPHX CAC025-065-222255- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 306 PM MST (306 PM PDT) TUE AUG 22 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN IMPERIAL COUNTY IN SOUTHEASTERN CALIFORNIA SOUTHEASTERN RIVERSIDE COUNTY IN SOUTHEASTERN CALIFORNIA * UNTIL 355 PM PDT (355 PM MST) * AT 3 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED SEVERE THUNDERSTORMS NEAR BLYTHE... MOVING NORTHWEST 10 MPH. SEVERE STORMS WILL ALSO AFFECT THE COMMUNITIES OF PALO VERDE... AND RIPLEY. DAMAGING WINDS 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 Aug 22, 2:35 PM PDT, 31 minutes earlier.
Area forecast discussion, Aug 22, 2:35 PM PDT, 31 minutes before
AZZ020>028-CAZ030>033-230545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 235 PM MST TUE AUG 22 2000 .SYNOPSIS... HIGH PRESSURE CENTERED OVER OKLAHOMA AND COLORADO WITH A FLOW ALOFT FROM THE SOUTHEAST OVER ARIZONA WILL CONTINUE TO BRING MOISTURE OVER ARIZONA AND ACROSS SOUTHEAST CALIFORNIA THROUGH THE WEEKEND. THIS MEANS SCATTERED SHOWERS AND THUNDERSTORMS AT TIMES FOR SOUTHEAST CALIFORNIA AND ARIZONA THE REST OF THE WEEK AND THIS WEEKEND... ALONG WITH BLOWING DESERT DUST. .DISCUSSION... FLOW ALOFT FROM THE SOUTHEAST CONTINUES TO BRING MOISTURE FROM MEXICO OVER ARIZONA WITH PATTERN SPREADING RAPIDLY WEST OVER SOUTHEAST CALIFORNIA. THE LOW LEVELS OF THE ATMOSPHERE REMAIN RELATIVELY DRY...SO EXPECT MORE WIND AND DUST IN THE DESERT AREAS THAN RAIN. HOWEVER...THERE IS ENOUGH MOISTURE FOR LOCALLY HEAVY RAIN WITH FLOODING OF NORMALLY DRY CREEKS AND WASHES. THIS IS COVERED IN THE HAZARDOUS WEATHER OUTLOOK...IN ADDITION TO STRONG WIND GUSTS... BLOWING DUST AND REDUCED VISIBILITY. BROADBRUSH FORECAST WITH CHANCE OF SHOWERS AND THUNDERSTORMS FOR ALL OF ARIZONA AND SOUTHEAST CALIFORNIA PORTION OF FORECAST AREA COVERED THROUGH THE WEEKEND. ELLIS
In the hours before
Special weather statement, Aug 22, 1:04 PM PDT, 2 hours 2 minutes before
AZZ021>024-026>028-222355- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 104 PM MST TUE AUG 22 2000 ...SLIGHT RISK OF HAZARDOUS WEATHER OVER SOUTH CENTRAL AND SOUTHWEST ARIZONA LATE THIS AFTERNOON AND TONIGHT... A STRONG SOUTHEAST FLOW OF INCREASINGLY MOIST AIR...WILL RESULT IN AN UPSWING IN THUNDERSTORM ACTIVITY LATE THIS AFTERNOON AND TONIGHT. AS A RESULT...THERE IS A SLIGHT RISK OF HAZARDOUS WEATHER OVER SOUTH CENTRAL AND SOUTHWEST ARIZONA. STORMS THIS AFTERNOON AND TONIGHT WILL HAVE THE POTENTIAL TO PRODUCE WIND GUSTS IN EXCESS OF 60 MPH...BLOWING DUST THAT COULD REDUCE VISIBILITY TO LESS THAN ONE QUARTER MILE...AND LOCALLY HEAVY RAIN...WHICH COULD RESULT IN FLOODING OF NORMALLY DRY CREEKS AND WASHES. STORM SPOTTER ACTIVATION MAY BE NECESSARY BY LATE THIS AFTERNOON. MB
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 3:46 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 49 min |
Nearby
Severe Thunderstorm Warnings in California, 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.