Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 17, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jun 29, 2000, 12:24 PM MST for Cochise County, Arizona. It was in force for 36 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 29, 2000, 12:24 PM MST (19:24 UTC)
- Expired
- Jun 29, 2000, 1:00 PM MST
- In force
- 36 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), 70 km from the middle of the area, began a volume at 19:23 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, 7.4 hours before the alert went out and 100 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
- 60 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1316 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 20 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 291924 SVRTUS AZC003-292000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1224 PM MST THU JUN 29 2000 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL COCHISE COUNTY IN ARIZONA * UNTIL 100 PM MST * AT 1221 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER CENTRAL COCHISE COUNTY...ABOUT 5 MILES NORTH OF TOMBSTONE...OR ABOUT 22 MILES NORTHEAST OF SIERRA VISTA...MOVING NORTHEAST AT 10 MPH. * THE SEVERE THUNDERSTORM IS EXPECTED TO STAY OVER RURAL CENTRAL COCHISE COUNTY THROUGH 100 PM MST REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TUCSON. LAT...LON 3182 11018 3169 11003 3194 10941 3222 10967
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 29, 9:30 AM MST, 2 hours 54 minutes earlier.
Area forecast discussion, Jun 29, 9:30 AM MST, 2 hours 54 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 930 AM MST THU JUN 29 2000 SYNOPSIS...DEEP MONSOON MOISTURE WILL REMAIN OVER SOUTHEAST ARIZONA INTO THE UPCOMING WEEKEND. THIS WILL ALLOW SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP EACH DAY...MAINLY IN THE AFTERNOON AND EVENING. HEAVY RAIN WILL OCCUR WITH THE STRONGER STORMS. DISCUSSION...THE DEBRIS CLOUD SHIELD IS NOT AS DENSE AS PREVIOUS DAYS...THEREFORE EXPECT MORE SOLAR INSOLATION AND AN EARLIER START TO DAYTIME CONVECTION. A MODIFIED 5 AM TUCSON SOUNDING YIELDS 900 J/KG OF CAPE FOR THE AFTERNOON HOURS. PW VALUES IN EXCESS OF 1.5 INCHES AND A LIGHT FLOW ALOFT WILL LEAD TO CONTINUED THREAT OF HEAVY RAIN AND FLASH FLOODING. THE ADDITIONAL DAYTIME HEATING MENTIONED ABOVE AND A SHEAR AXIS OVERHEAD SHOULD MAKE FOR AN ACTIVE AFTERNOON AND EVENING. THE ZONES HAVE ALREADY BEEN UPDATED...THEREFORE NO FURTHER UPDATES PLANNED. OKULSKI .TWC...NONE.
In the hours before
Special weather statement, Jun 29, 10:45 AM MST, 1 hour 39 minutes before
AZZ019-029>035-300600-
HAZARDOUS WEATHER OUTLOOK...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1045 AM MST THU JUN 29 2000
*CONDITIONAL* *CONDITIONAL*
COUNTY AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 42 21 32 12 SW 5
GRAHAM 43 22 33 13 SW 5
GREENLEE 49 26 42 21 SW 5
TUCSON/ERN PIMA 41 21 31 11 S 5
TOHONO OODHAM 33 13 24 4 E 5
SOUTHEAST PINAL 35 14 26 7 SE 5
WESTERN PIMA 30 10 20 0 NE 5
SANTA CRUZ 43 21 33 13 S 5
SYNOPSIS...LESS MORNING CLOUDINESS HAS LED TO AN EARLIER START
FOR THUNDERSTORMS. A LIGHT WIND FLOW ALOFT AND A RATHER MOIST
ATMOSPHERE WILL MAKE HEAVY RAIN AND FLASH FLOODING THE PRIMARY
CONCERNS THROUGH THE EVENING HOURS.
*****************************************************************
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/OKULSKI
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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.