Alert archive / Arizona / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 12, NWS Tucson, AZ

June 20, 2000Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 20, 2000, 4:35 PM MST for Cochise County, Arizona. It was in force for 40 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, 4:35 PM MST (23:35 UTC)
Expired
Jun 20, 2000, 5:15 PM MST
In force
40 min
Issued by
NWS Tucson, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 40 km from the middle of the area, began a volume at 23:34 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 12:00Z, 11.6 hours before the alert went out and 80 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.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 12:00Z on 2000-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 178 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2000-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
178 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
1762 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

333 
WUUS55 KTWC 202335
SVRTUS
AZC003-210015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
435 PM MST TUE JUN 20 2000

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN COCHISE COUNTY IN ARIZONA
  THIS INCLUDES SIERRA VISTA

* UNTIL 515 PM MST

* AT 427 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM NEAR FT HUACHUCA...OR ABOUT 2 MILES NORTHWEST OF 
  SIERRA VISTA...MOVING NORTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HUACHUCA CITY AT 450 PM MST

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN.

LAT...LON 3146 11045 3147 11026 3182 11027 3180 11044

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, 2:10 PM MST, 2 hours 25 minutes earlier.

Area forecast discussion, Jun 20, 2:10 PM MST, 2 hours 25 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
210 PM 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 WITH CONVECTIVE ACTIVITY FILLING IN ACROSS PIMA COUNTY
AND SANTA CRUZ COUNTIES. NICE LITTLE CATALYST TAPPING INTO OUR
MORNING POTENTIAL HAS KEPT US CLOUDY ALL DAY WITH PERIODS OF
SHOWERS...AND ABOUT 7 TO 9 DEGREES COOLER. FAR EASTERN AREAS HAVE
HAD A MORE TYPICAL DEVELOPMENT...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. AS THAT IMPULSE SHIFTS OVERHEAD THIS
AFTERNOON AND EVENING WE ARE SEEING A LITTLE MORE ORGANIZATION
CROSSING THE BORDER AND COULD VERY WELL SUSTAIN ACTIVITY OVERNIGHT.

OTHERWISE IT DOESNT LOOK LIKE THE MOISTURE IS GOING AWAY ANYTIME
SOON. WITH SUCH AN EARLY START PRECIPITATED BY BUD...ONE MIGHT
EXPECT A DRY SPELL BEFORE WE REALLY GET STARTED. THE MOISTURE
CONTINUES TO HANG ON AND COULD BE REINFORCED BY INDIRECT INFLUENCE
FROM HURRICANE CARLOTTA DOWN AROUND 15N. MEYER

.TWC...NONE.

In the hours before

Special weather statement, Jun 20, 10:45 AM MST, 5 hours 50 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/

NNNN

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 10:32 AM MSTSevere Thunderstorm WarningTWCPinal43 min
Jun 20, 11:48 AM MSTSevere Thunderstorm WarningTWCPinal42 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.