Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 50, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 23, 2000, 3:50 PM MST for Yuma County, Arizona. It was in force for 60 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 23, 2000, 3:50 PM MST (22:50 UTC)
- Expired
- Aug 23, 2000, 4:50 PM MST
- In force
- 60 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Yuma County, AZ
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
- 8 J/kg
- Mixed-layer CIN
- -320 J/kg
- Mixed-layer LCL
- 2255 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 82 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 232251 SVRPHX AZC027-232350- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 350 PM MST WED AUG 23 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME SOUTHWEST YUMA COUNTY IN SOUTHWEST ARIZONA * UNTIL 450 PM MST * AT 350 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR GADSDEN...MOVING NORTHEAST AT 20 MPH. * COMMUNITIES THAT WILL BE AFFECTED INCLUDE SAN LUIS, GADSDEN, AND SOMERTON. IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN PHOENIX. $$ LW LAT...LON 3255 11494 3247 11470 3274 11452 3283 11481
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 23, 2:20 PM MST, 1 hour 30 minutes earlier.
Area forecast discussion, Aug 23, 2:20 PM MST, 1 hour 30 minutes before
AZZ020>028-CAZ030>033-240545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 220 PM MST WED AUG 23 2000 .SYNOPSIS... HIGH PRESSURE...NOW OVER OKLAHOMA...IS EXPECTED TO BUILD OVER THE SOUTHERN ROCKIES BY FRIDAY. AT THE SAME TIME A WEAK SYSTEM IN NORTHERN MEXICO WILL INTENSIFY AND DRIFT TO THE NORTHWEST...AND BRING ADDITIONAL MOISTURE INTO THE REGION FOR FRIDAY AND INTO THE UPCOMING WEEKEND. TEMPERATURES WILL NOT CHANGE MUCH...ALTHOUGH A SLIGHT WARMUP SHOULD SET IN DURING THE WEEKEND AND CONTINUE INTO MONDAY. .DISCUSSION... BEST MID AND HIGH LEVEL MOISTURE REMAINS ORIENTED N-S THROUGH THE STATE THIS AFTERNOON...NOT ALL THAT MUCH DIFFERENT FROM 24HRS AGO. SFC TEMPS SLOWER TO GET GOING TODAY...PHX ABOUT 2DEG BELOW THE TEMP CURVE OF YESTERDAY. WATER VAPOR LOOP SHOWS CONTINUED SE FLOW ALOFT...AND RUC AND OTHER MODELS PICK UP A LITTLE SYSTEM IN THE FLOW NEAR SE AZ THIS AFTN. THIS MAY BE A BIT OF A TEASER IN ADVANCE OF THE INTENSIFYING UPPER LEVEL TROF THAT MOVES INTO AZ ON FRIDAY. MUCH MORE AMPLITUDE ON THIS SYSTEM...AND LARGE SCALE UVV AND PCPN PSBL. EARLY AFTERNOON 88D AND LIGHTNING DATA SHOW A SLOWER DEVELOPMENT IN THE STATE...BUT SNDGS SHOULD DESTBLZ FOR ANOTHER OUTBREAK A BIT LATER IN THE DAY. HAVE ISSUED HWO TO COVER THE SLGHT RISK OF SEVERE WEATHER ...BUT VERY HARD TO PINPOINT LOCATIONS AT THIS TIME. STAY TUNED. IN THE LONGER TERM...AVN AND MRF BUILD THE SRN ROCKIES HIGH AND THEN MOVE IT BACK TO THE KS/OK AREA BY MONDAY. THIS IN RESPONSE TO NEW PAC TROF THAT WILL LIKELY TURN OUR FLOW BACK TO THE SOUTH ONCE AGAIN. TOO EARLY TO CALL FOR ANY SORT OF DECREASE IN MEAN RH AND WILL THUS RETAIN MENTION OF SCT SHOWERS/TSTMS THRU THE WEEKEND. GOOD NEWS IS MAX TEMPS TO STAY NEAR OR LTL BELOW NORMALS FOR MID AND LATE AUGUST. SAS
In the hours before
Special weather statement, Aug 23, 12:26 PM MST, 3 hours 24 minutes before
AZZ020>028-CAZ030>033-240130- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 1226 PM MST (1226 PM PDT) WED AUG 23 2000 ...SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS ALL OF SOUTHWEST AND SOUTH CENTRAL ARIZONA AS WELL AS SOUTHEAST CALIFORNIA LATE THIS AFTERNOON INTO TONIGHT... THE SLIGHT RISK AREA INCLUDES THE FOLLOWING ARIZONA COUNTIES... MARICOPA...SOUTHERN GILA...NORTHWEST PINAL...LA PAZ AND YUMA... AS WELL AS EASTERN RIVERSIDE AND IMPERIAL COUNTIES IN SOUTHEAST CALIFORNIA. SOME CITIES AT RISK OF EXPERIENCING STRONG STORMS INCLUDE THE GREATER PHOENIX AREA...YUMA...GILA BEND...PARKER AND GLOBE...AS WELL AS BLYTHE AND IMPERIAL IN SOUTHEAST CALIFORNIA. SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THROUGHOUT THE AFTERNOON AND CONTINUE INTO THIS EVENING AS THEY MOVE FROM THE SOUTHEAST TO THE NORTHWEST. THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING WINDS IN EXCESS OF 50 MPH...DENSE BLOWING DgUST AND BRIEF HEAVY RAINFALL. STORM SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY.
Special weather statement, Aug 23, 12:30 PM MST, 3 hours 20 minutes before
AZZ020>028-CAZ030>033-240129- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 1226 PM MST (1226 PM PDT) WED AUG 23 2000 ...SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS ALL OF SOUTHWEST AND SOUTH CENTRAL ARIZONA AS WELL AS SOUTHEAST CALIFORNIA LATE THIS AFTERNOON INTO TONIGHT... THE SLIGHT RISK AREA INCLUDES THE FOLLOWING ARIZONA COUNTIES... MARICOPA...SOUTHERN GILA...NORTHWEST PINAL...LA PAZ AND YUMA... AS WELL AS EASTERN RIVERSIDE AND IMPERIAL COUNTIES IN SOUTHEAST CALIFORNIA. SOME CITIES AT RISK OF EXPERIENCING STRONG STORMS INCLUDE THE GREATER PHOENIX AREA...YUMA...GILA BEND...PARKER AND GLOBE...AS WELL AS BLYTHE AND IMPERIAL IN SOUTHEAST CALIFORNIA. SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THROUGHOUT THE AFTERNOON AND CONTINUE INTO THIS EVENING AS THEY MOVE FROM THE SOUTHEAST TO THE NORTHWEST. THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING WINDS IN EXCESS OF 50 MPH...DENSE BLOWING DUST AND BRIEF HEAVY RAINFALL. STORM SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY.
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:00 PM MST | Severe Thunderstorm Warning | PSR | Gila | 45 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.