Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 23, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 3, 2000, 4:25 PM MST for Pima County, Arizona. It was in force for 35 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 3, 2000, 4:25 PM MST (23:25 UTC)
- Expired
- Aug 3, 2000, 5:00 PM MST
- In force
- 35 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 11.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2912 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 56 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 KTWC 032327 SVRTUS AZC019-040000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 425 PM MST THU AUG 3 2000 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PIMA COUNTY IN ARIZONA * UNTIL 500 PM MST * AT 425 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME EAST CENTRAL PIMA COUNTY...ALONG I-10 NEAR THE COCHISE AND PIMA COUNTY LINE...MOVING WEST AT 20 MPH. * THIS STORM WILL BE NEAR VAIL BY 440 PM MST. LAT...LON 3175 11077 3175 11048 3229 11046 3229 11075
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, 2:05 PM MST, 2 hours 20 minutes earlier.
Area forecast discussion, Aug 3, 2:05 PM MST, 2 hours 20 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 205 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...MID LEVEL HIGH PRESSURE MOVING SLOWLY SOUTHEAST AND BRINGING SOME RECYCLED MOISTURE WITH IT. CONVECTION GOING PRETTY GOOD ALONG THE RIM...WITH SCATTERED BUILDUPS AND ISOLATED STORMS IN COCHISE AND SANTA CRUZ COUNTIES. DESPITE THE HIGH CENTER PUSHING A LITTLE FARTHER TO THE SOUTH...SOUTHEAST ARIZONA REMAINS IN EASTERLY FLOW THROUGH THE FORECAST PERIOD. BASED ON EVOLUTION OF THE SYNOPTIC PATTERN EXPECT A GRADUAL MOISTURE INCREASE OVER THE WEEKEND. BOTH CANADIAN AND MRF ENSEMBLES INDICATE EARLY NEXT WEEK SHOULD APPROACH NORMAL MONSOON ACTIVITY...BUT ANY DRAMATIC INCREASES IN MOISTURE WILL DEPEND ON SURGE ACTIVITY WHICH REQUIRES A WAIT AND SEE APPROACH. DRB .TWC...NONE.
In the hours before
Special weather statement, Aug 3, 10:45 AM MST, 5 hours 40 minutes before
AZZ019-029>035-040600-
HAZARDOUS WEATHER OUTLOOK...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1045 AM MST THU AUG 3 2000
*CONDITIONAL* *CONDITIONAL*
COUNTY AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 10 10 5 0 NW 12
GRAHAM 5 5 5 0 W 15
GREENLEE 30 10 10 0 W 15
TUCSON/ERN PIMA 5 5 0 0 NW 12
TOHONO OODHAM 5 5 5 0 NW 12
SOUTHEAST PINAL 5 0 0 0 NW 12
WESTERN PIMA 0 0 0 0
SANTA CRUZ 5 5 5 0 NW 10
SYNOPSIS...MOISTURE CONTINUES TO BE LIMITED ACROSS SOUTHEAST ARIZONA
WITH LOW-LEVELS ON THE DRY SIDE. THUNDERSTORMS WILL BE ISOLATED IN
NATURE LATER THIS AFTERNOON AND EARLY THIS EVENING AND BE CONFINED TO
THE HIGHER TERRAIN OF SOUTHEAST ARIZONA. THE BEST AREAL COVERAGE OF
STORMS WILL BE IN THE WHITE MOUNTAINS WHERE THERE IS DEEPER MOISTURE.
STRONG DOWNBURST WINDS AND BLOWING DUST REMAIN THE PRIMARY CONCERNS.
*****************************************************************
KEY...AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL
EXPERIENCE THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION TO WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...PRODUCT IS NOT UPDATED.
VALID TIME IS FROM 10:45 AM TO 12 MIDNIGHT OF THE DAY OF ISSUANCE.
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES. CORRESPONDING GRAPHICS MAY BE FOUND ON THE NWS
TUCSON INTERNET PAGE AT
HTTP://WWW.WRH.NOAA.GOV/TUCSON/THUNDER/SWO.SHTML
END/
NNNNThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 3:26 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 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.