Alert archive / Arizona / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 22, NWS Tucson, AZ

August 3, 2000Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 3, 2000, 3:26 PM MST for Cochise County, Arizona. It was in force for 49 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, 3:26 PM MST (22:26 UTC)
Expired: Aug 3, 2000, 4:15 PM MST
In force: 49 min
Issued by: NWS Tucson, AZ
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cochise County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 10.4 hours before the alert went out and 68 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 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

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KTWC 032227
SVRTUS
AZC003-032315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
326 PM MST THU AUG 3 2000

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL COCHISE COUNTY IN ARIZONA

* UNTIL 415 PM MST

* AT 326 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 22 MILES SOUTH OF BENSON TO 14   d
  MILES NORTHEAST OF BENSON...MOVING WEST AT 10 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BENSON BY 345 PM MST

LAT...LON 3165 11043 3168 11009 3193 11000 3221 11016
          3223 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 Aug 3, 2:05 PM MST, 1 hour 21 minutes earlier.

Area forecast discussion, Aug 3, 2:05 PM MST, 1 hour 21 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, 4 hours 41 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/

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 4:25 PM MST	Severe Thunderstorm Warning	TWC	Pima	35 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2000 Every 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.