Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 1, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jun 21, 2001, 4:15 PM MST for Gila County, Arizona. It was in force for 30 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 21, 2001, 4:15 PM MST (23:15 UTC)
- Expired
- Jun 21, 2001, 4:45 PM MST
- In force
- 30 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Gila County, AZ
The radar
The Phoenix radar (KIWA), 103 km from the middle of the area, began a volume at 23:19 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, 11.3 hours before the alert went out and 131 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
- 59 J/kg
- Mixed-layer CIN
- -455 J/kg
- Mixed-layer LCL
- 2060 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 21 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 KPSR 212318 SVRPHX AZC007-212345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 415 PM MST THU JUN 21 2001 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA... * UNTIL 445 PM MST. * AT 415 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES WEST OF SAN CARLOS...OR ABOUT 15 MILES EAST OF GLOBE...MOVING NORTHEAST AT 10 MPH. THIS STORM WILL AFFFECT THE SAN CARLOS INDIAN RESERVATION INCLUDING THE TOWNS OF SAN CARLOS AND PERIDOT...ALONG WITH HIGHWAY 70 EAST OF GLOBE. IT WILL PRODUCE STRONG DAMAGING WINDS. LARGE HAIL CAN ALSO BE EXPECTED. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN PHOENIX. LAT...LON 3333 11069 3320 11055 3330 11037 3341 11050 AJ
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 Phoenix, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 3:00 PM MST, 1 hour 15 minutes earlier.
Area forecast discussion, Jun 21, 3:00 PM MST, 1 hour 15 minutes before
AZZ020>028-CAZ030>033-220545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 300 PM MST THU JUN 21 2001 .SYNOPSIS... HIGH PRESSURE WILL REMAIN IN PLACE OVER EASTERN ARIZONA THE NEXT FEW DAYS. THIS WILL KEEP THE RATHER MOIST SOUTHEAST FLOW IN PLACE ACROSS SOUTH-CENTRAL AND SOUTHWEST ARIZONA INTO THE UPCOMING WEEKEND. THERE WILL BE ENOUGH MOISTURE TO FEED MAINLY LATE AFTERNOON AND EVENING THUNDERSTORMS ACROSS SOUTH-CENTRAL ARIZONA...ESPECIALLY THE HIGHER TERRAIN. FURTHER WEST...THE FLOW ALOFT WILL BE MORE FROM THE SOUTHWEST THE NEXT FEW DAYS...RESULTING IN A SOMEWHAT DRIER AIR MASS WITH LITTLE THREAT OF THUNDERSTORMS. TEMPERATURES DURING THE NEXT FEW DAYS WILL GENERALLY BE CLOSE TO MID JUNE NORMALS. .DISCUSSION... AFTERNOON CONVECTION SIMILAR TO THAT OF 24 HOURS AGO...EXCEPT THAT THERE IS MORE TODAY OVER THE WESTERN RIM COUNTRY. ACTIVITY TO THE NORTHEAST THROUGH SOUTHEAST OF PHX...SO INTERSECTING BOUNDARIES AND FAVORABLE STEERING FLOWS WILL MAKE FOR ANOTHER THREAT FOR EVENING DUST STORMS AND MAYBE EVEN A FEW THUNDERSTORMS OVER MUCH OF THE CWFA. FAVORABLE THETA-E RIDGE AXIS AND NEGATIVE LIS STILL APPEAR TO BE IN PLACE OVER FAR WRN CWFA...SO DECIDED TO LEAVE A SLIGHT RISK THESE AREAS...EXCEPT JTNP...THIS EVENING AS CONVECTIVE TEMPS ARE JUST NOW BEING REALIZED. STILL APPEARS THAT SOMEWHAT DRIER MID LEVEL AIR WILL BE PULLED INTO FAR WRN CWFA NEXT COUPLE OF DAYS...SO WILL NOT MENTION STORMS OUT THERE AFTER TONIGHT. NOT MUCH IN THE WAY OF ANY APPRECIABLE DYNAMICAL FORCING MECHANISMS NEXT FEW DAYS...WILL PROBABLY JUST HAVE TO RELY ON HIGHER TERRAIN...INTERSECTING TSTM BOUNDARIES AND FAVORABLE STEERING FLOWS FOR DAILY DOSE OF CONVECTION EASTERN CWFA. SOUNDINGS AND THICKNESSES WOULD ARGUE FOR LITTLE DAY TO DAY CHANGE IN TEMPS INTO THE WEEKEND. THE EXTENDED WILL BE LEFT IN A PERSISTENCE MODE...ALTHOUGH LONGER RANGE MRF WOULD ARGUE FOR SOME DRYING AND PERHAPS COOLING AFTER DAY 5. WILL NOT BUY OFF ON THAT FOR NOW. ESTLE
In the hours before
Special weather statement, Jun 21, 12:33 PM MST, 3 hours 42 minutes before
AZZ020>028-CAZ030>033-220600-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
1233 PM MST THU JUN 21 2001
...ISOLATED STRONG THUNDERSTORMS ARE POSSIBLE OVER SOUTHWEST AND
SOUTH-CENTRAL ARIZONA AS WELL AS FAR SOUTHEAST CALIFORNIA LATE THIS
AFTERNOON AND THIS EVENING...
COUNTIES IN THE RISK AREA INCLUDE...
IN ARIZONA...MARICOPA...NORTHWEST PINAL...LA PAZ...YUMA
AND SOUTHERN GILA
IN CALIFORNIA...EASTERN RIVERSIDE...IMPERIAL
THE PRIMARY HAZARDOUS WEATHER RISKS INCLUDE: LOW VISIBILITIES DUE TO
BLOWING DUST AND GUSTY WINDS UP TO 45 MPH.
STORM SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY.
ESTLENearby
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.