Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 24, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 3, 2000, 11:47 PM MST for Pima County, Arizona. It was in force for 43 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Aug 3, 2000, 11:47 PM MST (06:47 UTC)
- Expired
- Aug 4, 2000, 12:30 AM MST
- In force
- 43 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pima County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 3, 11:56 PM MST | Hail 1 | Tucson Intl Arpt, AZ |
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
Tuscon, AZ (KTUS), launched 00:00Z, 6.8 hours before the alert went out and 17 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
- 233 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 3635 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KTWC 040650 SVRTUS AZC019-040730- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1147 PM MST THU AUG 3 2000 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN PIMA COUNTY IN ARIZONA THIS INCLUDES THE ENTIRE TUCSON METRO AREA * UNTIL 1230 AM MST * AT 1140 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM THE FAR NORTHEAST SIDE OF TUCSON TO 10 MILES SOUTH OF VAIL...MOVING WEST AT 15 MPH. * SEVERE THUNDERSTORMS WILL BE OVER... CENTRAL TUCSON BY 1205 AM...AND ORO VALLEY AND GREEN VALLEY BY 1225 AM MST WIND GUSTS TO 60 MPH...DIME SIZED HAIL...AND NUMEROUS CLOUD TO GROUND LIGHTNING STRIKES ARE LIKELY. PYTLAK LAT...LON 3178 11056 3246 11058 3251 11105 3178 11109
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 3, 9:10 PM MST, 2 hours 37 minutes earlier.
Area forecast discussion, Aug 3, 9:10 PM MST, 2 hours 37 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 910 PM MST THU AUG 3 2000 SYNOPSIS...HIGH PRESSURE ALOFT NEAR THE FOUR CORNERS REGION WILL GRADUALLY EXPAND INTO THE SOUTHERN PLAINS THIS WEEKEND. LOW PRESSURE DEVELOPING OFF THE WEST COAST AND SHOULD SWITCH LOW LEVEL FLOW OUT OF THE GULF OF CALIFORNIA AND NORTHWEST MEXICO. AS THIS OCCURS...SOUTHEAST ARIZONA WILL SEE AN UPSWING IN MONSOON ACTIVITY OVER THE WEEKEND. DISCUSSION...SHOWERS AND THUNDERSTORMS WERE REDEVELOPING ACROSS PORTIONS OF GRAHAM AND COCHISE AFTER SUNSET THIS EVENING. AIR MASS STILL APPEARS TO BE UNSTABLE ENOUGH TO SUPPORT NOCTURNAL STORMS. THUS...WILL KEEP THE MENTION OF ISOLATED THUNDERSTORMS GOING IN MOST ZONES FOR TONIGHT. OTHERWISE...NEXT FEW DAYS APPEAR TO BE BETTER FOR THUNDERSTORM CHANCES ESPECIALLY AROUND SATURDAY WITH AN INCREASE IN MOISTURE AND A POSSIBLE DISTURBANCE MOVING THROUGH. .TWC...NONE. M
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.