Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 11, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jun 20, 2000, 11:48 AM MST for Pinal County, Arizona. It was in force for 42 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
- Jun 20, 2000, 11:48 AM MST (18:48 UTC)
- Expired
- Jun 20, 2000, 12:30 PM MST
- In force
- 42 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pinal County, AZ
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 6.8 hours before the alert went out and 96 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
- 2346 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1314 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
297 WUUS55 KTWC 201848 SVRTUS AZC021-201930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1148 AM MST TUE JUN 20 2000 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PINAL COUNTY IN ARIZONA * UNTIL 1230 PM MST * AT 1136 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EAST CENTRAL PINAL COUNTY...OR ABOUT 20 MILES EAST OF FLORENCE...MOVING NORTH AT 18 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... KELVIN AT NOON MST SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN. LAT...LON 3291 11113 3292 11091 3322 11094 3318 11120
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 Jun 20, 9:15 AM MST, 2 hours 33 minutes earlier.
Area forecast discussion, Jun 20, 9:15 AM MST, 2 hours 33 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 915 AM MST TUE JUN 20 2000 SYNOPSIS...DEEP MOISTURE FROM THE GULF OF CALIFORNIA AND NORTHERN MEXICO WILL CONTINUE ACROSS SOUTHEAST ARIZONA THIS WEEK FOR A DAILY THREAT OF SHOWERS AND THUNDERSTORMS. LOCALLY HEAVY RAINFALL CAN BE EXPECTED WITH SOME OF THESE STORMS. DISCUSSION...IMPULSE MOVING FROM NORTHERN MEXICO INTO SOUTHERN ARIZONA THIS MORNING WITH CONVECTIVE ACTIVITY FILLING IN ACROSS PIMA COUNTY AND SANTA CRUZ COUNTIES. NICE LITTLE CATALYST TAPPING INTO OUR MORNING POTENTIAL AND CLOUDING US UP WITH SHOWERS ALREADY KICKING IN...NOT SURE HOW WARM WE ARE ACTUALLY GOING TO GET TODAY...BUT I SUSPECT OUR CURRENT FORECAST IS TOO HIGH. WE'LL PROBABLY END UP WITH MORE CLOUDINESS THAN EXPECTED AS WELL. FAR EASTERN AREAS HAVE THE BEST CHANCE FOR A TYPICAL THUNDERSTORM DAY...MORNING AND EARLY AFTERNOON HEATING WITH AFTERNOON AND EVENING THUNDERSTORMS. FROM TUCSON WEST MORE LIKE LOTS OF CLOUDS AND PERIODS OF SHOWERS...ISOLATED TO SCATTERED THUNDERSTORMS. MEYER .TWC...NONE.
In the hours before
Special weather statement, Jun 20, 10:45 AM MST, 1 hour 3 minutes before
AZZ019-029>035-210600-
HAZARDOUS WEATHER OUTLOOK...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1045 AM MST TUE JUN 20 2000
*CONDITIONAL* *CONDITIONAL*
COUNTY AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 40 25 60 10 N 10
GRAHAM 40 25 60 10 N 10
GREENLEE 50 25 70 10 N 10
TUCSON/ERN PIMA 45 25 65 10 N 10
TOHONO OODHAM 40 25 60 10 N 10
SOUTHEAST PINAL 35 25 60 10 N 10
WESTERN PIMA 30 10 60 10 N 10
SANTA CRUZ 40 25 65 10 N 10
SYNOPSIS...DEEP MOISTURE FROM THE GULF OF CALIFORNIA AND NORTHERN
MEXICO WILL CONTINUE TO FUEL THUNDERSTORMS ACROSS SOUTHEAST TODAY
AND TONIGHT. LOCALLY HEAVY RAINFALL CAN BE EXPECTED WITH SOME OF
THESE STORMS.
*****************************************************************
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 |
|---|---|---|---|---|
| Jun 20, 10:32 AM MST | Severe Thunderstorm Warning | TWC | Pinal | 43 min |
| Jun 20, 4:35 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 40 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.