Alert archive / Arizona / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 5, NWS Tucson, AZ

June 25, 2001Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 25, 2001, 6:14 PM MST for Cochise County, Arizona. It was in force for 31 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 25, 2001, 6:14 PM MST (01:14 UTC)
Expired
Jun 25, 2001, 6:45 PM MST
In force
31 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), 116 km from the middle of the area, began a volume at 01:15 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 00:00Z, 1.2 hours before the alert went out and 153 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 00:00Z on 2001-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 2001-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 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
16 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
1405 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
116 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.

098 
WUUS55 KTWC 260115
SVRTUS
AZC003-260145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
614 PM MST MON JUN 25 2001

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEAST COCHISE COUNTY IN ARIZONA
  THIS INCLUDES THE CITY OF DOUGLAS

* UNTIL 645 PM MST

* AT 605 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM NEAR DOUGLAS...MOVING NORTH AT 25 MPH.

WIND GUSTS TO 65 MPH AND HAIL UP TO ONE INCH IN DIAMETER IS LIKELY. 

LAT...LON 3133 10963 3133 10941 3165 10932 3168 10959

PYTLAK

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 25, 2:15 PM MST, 3 hours 59 minutes earlier.

Area forecast discussion, Jun 25, 2:15 PM MST, 3 hours 59 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
215 PM MST MON JUN 25 2001

SYNOPSIS...A SUBTROPICAL DISTURBANCE WEST OF THE BAJA PENINSULA WILL
LIFT NORTH ACROSS ARIZONA TONIGHT...BRINGING OCCASIONAL SHOWERS AND
A FEW THUNDERSTORMS TO THE AREA TONIGHT.   A DRIER SOUTHWEST FLOW
ALOFT WILL DEVELOP BEHIND THIS DISTURBANCE BY MIDWEEK...WHICH WILL
LIMIT THE THUNDERSTORMS TO THE MOUNTAINS EAST OF TUCSON WEDNESDAY
THROUGH FRIDAY.

DISCUSSION...AN AREA OF SHOWERS WITH EMBEDDED THUNDERSTORMS HAS
DEVELOPED IN DEFORMATION ZONE AHEAD OF BAJA LOW AND MOVING INTO
TUCSON METRO AT THIS TIME.  SATELLITE PICTURES SHOW CLEARING IN
NORTHERN MEXICO WHICH SHOULD CONVECT AGAIN LATER THIS AFTERNOON...
FEEDING MOISTURE INTO DEFORMATION AREA AHEAD OF UPPER LOW.
THUS...EXPECT OCCASIONAL SHOWERS AND A FEW EMBEDDED THUNDERSTORMS TO
REDEVELOP TONIGHT FOLLOWING THIS FIRST INITIAL BAND.  AFTER THE
TROUGH PASSAGE EARLY TUESDAY MORNING...COULD SEE A FEW STORMS IN THE
AFTERNOON AS MOISTURE LINGERS AND ATMOSPHERE DESTABILIZES DUE TO
DIURNAL HEATING.

THE AVN AND ETA SHOW CONSIDERABLE DIFFERENCES IN THE AMOUNT OF LOW
LEVEL MOISTURE THAT REMAINS OVER THE AREA MID WEEK.  SINCE THE ETA
HAD A BETTER INITIALIZATION BASED ON THE GOES PWATER IMAGES...WILL
LEAN TOWARD THE ETA SOLUTION TUESDAY AFTERNOON AND AGAIN WEDNESDAY.
MRF SHOWS A SLIGHT INCREASE IN MOISTURE FOR THE WEEKEND...SO WILL
KEEP ISOLATED/CHANCE POPS THROUGH THE EXTENDED FORECAST.  DRB

.TWC...NONE.

In the hours before

Special weather statement, Jun 25, 12:45 PM MST, 5 hours 29 minutes before
AZZ019-029>035-250500-

SOUTHEAST ARIZONA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1245 PM MST MON JUN 25 2001

.SYNOPSIS...SHOWER AND THUNDERSTORM ACTIVITY IS PRIMARILY IN
PIMA...PINAL...AND SANTA CRUZ COUNTIES RIGHT NOW BUT WILL BECOME
MORE WIDESPREAD TO INCLUDE COCHISE...GRAHAM...AND GREENLEE COUNTIES
THROUGH THE EARLY AFTERNOON.  THE EXTENSIVE CLOUD COVER WILL REDUCE
THE MAXIMUM HEATING POTENTIAL THIS AFTERNOON...THUS THE SEVERE
THUNDERSTORM THREAT REMAINS LOW. THE FLASH FLOOD THREAT INCREASES
SLIGHTLY THROUGH THE AFTERNOON AS AN INFLUX OF MOISTURE CONTINUES
ACROSS SOUTHEAST ARIZONA.

.DISCUSSION...THE UPPER LEVEL LOW IS LOCATED OVER NORTHERN BAJA AND
WILL BE MOVING NORTHEASTWARD OVER ARIZONA THROUGH TUESDAY MORNING.
THE INFLUX OF MID LEVEL MOISTURE FROM MEXICO AND THE DEFORMATION
ZONE HAS LEAD TO THE WIDESPREAD SHOWER ACTIVITY THROUGH THE WESTERN
PORTIONS OF ARIZONA. THE SHOWER AND THUNDERSTORM ACTIVITY IS
BEGINNING TO DEVELOP AND MOVE INTO COCHISE COUNTY AS THE
DEFORMATION AXIS BEGINS TO TILT. SEVERE THUNDERSTORM THREATS WILL BE
NEAR OR SLIGHTLY BELOW CLIMATOLOGY DUE TO THE EXTENSIVE CLOUD COVER
OVER PIMA...PINAL...AND SANTA CRUZ COUNTIES. THE THREAT WILL BE NEAR
CLIMATOLOGY OR SLIGHLY HIGHER IN COCHISE AND GRAHAM COUNTIES SINCE
THE CLOUD COVER WAS NOT AS EXTENSIVE.  FLASH FLOOD THREATS WILL BE
SLIGHTLY ABOVE CLIMATOLOGY IN THE MOUNTAINOUS TERRAIN AND NEAR
CLIMATOLOGY IN THE WESTERN DESERTS.

STORM MOVEMENT TODAY WILL BE TO THE NORTHEAST AT 10 TO 15 MPH.
Local storm report, Jun 25, 4:19 PM MST, 1 hour 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
0419 PM MST MON JUN 25 2001

TIME (MST) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0248 PM    SAFFORD ARPT              AZ   59 MPH TSTM GUST
06/25/01   GRAHAM                         BLOWING DUST ALSO REDUCED
                                          VISIBILITY BRIEFLY BELOW 1/2 MILE.
                                          NO DAMAGE REPORTED.

Nearby

Severe Thunderstorm Warnings in Arizona, 2001Every severe thunderstorm warning in 2001

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.