Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 25, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 5, 2000, 5:15 PM MST for Pima 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 5, 2000, 5:15 PM MST (00:15 UTC)
- Expired
- Aug 5, 2000, 6:00 PM MST
- In force
- 45 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pima County, AZ
The radar
The Tucson radar (KEMX), 73 km from the middle of the area, began a volume at 00:15 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
Tuscon, AZ (KTUS), launched 00:00Z, 0.3 hours before the alert went out and 33 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
- 336 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 2718 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
627 WUUS55 KTWC 060015 SVRTUS AZC019-060100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 515 PM MST SAT AUG 5 2000 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN PIMA COUNTY IN ARIZONA THIS INCLUDES THE CITY OF ORO VALLEY...CATALINA AND MARANA * UNTIL 600 PM MST * AT 515 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER ORO VALLEY AND CATALINA...MOVING SOUTHWEST AT 15 MPH. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TUCSON. LAT...LON 3250 11100 3244 11086 3228 11109 3250 11129
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 Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 5, 2:30 PM MST, 2 hours 45 minutes earlier.
Area forecast discussion, Aug 5, 2:30 PM MST, 2 hours 45 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST SAT AUG 5 2000 SYNOPSIS...HIGH PRESSURE ALOFT WILL REMAIN TO THE NORTH INTO NEXT WEEK. MOISTURE IS EXPECTED TO INCREASE INTO EARLY NEXT WEEK AND KEEP A DAILY THREAT OF AFTERNOON AND EVENING THUNDERSTORMS. THERE WILL BE A CHANCE OF STRONG STORMS AND HEAVY RAINFALL. DISCUSSION...TSTMS HAVE BEEN ISOLATED AND MOUNTAIN HUGGERS UP TIL NOW BUT EXPECT MORE ACTION IN THE EVENING WITH FURTHER DESERT HEATING AND TSTMS COMING OFF THE HIGHER TERRAIN NORTHEAST. UPPER TROF STILL VERY IMPRESSIVE WITH STRONG CIRCULATION NOW INTO SE AZ. MOISTURE HAS OVERALL CONTINUED TO INCREASE AND MODELS ARE SHOWING MORE OF A SURGE POTENTIAL TONIGHT IN THE LOW LEVELS AS A VORTICITY MOVES ACROSS THE GULF OF CA. TROF SLOWS DOWN SUN/MON WITH CONTINUED GOOD UPPER DIVERGENCE AND VORTICITY INTO SE AZ. THIS DYNAMIC SUPPORT WILL CONTINUE INTO MONDAY FOR SCATTERED TSTMS EACH DAY. IN THE EXTENDED UPPER HIGH SHIFTS NORTHWARD AND WILL ALLOW EASTERLY WAVES FURTHER NORTH TO IMPACT THE AREA. WILL KEEP TSTMS AREA WIDE THRU THURSDAY. .TWC...NONE.
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 6:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 30 min |
| Aug 5, 6:25 PM MST | Flash Flood Warning | TWC | Pima | 5 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; radar from the NEXRAD Level II archive.