Severe Thunderstorm Warning 16, NWS Phoenix, AZ

Issued

Jul 11, 2002, 8:26 PM MST (03:26 UTC)

Expired

Jul 11, 2002, 9:15 PM MST

In force

49 min

Issued by

NWS Phoenix, AZ

Area

Counties, with a storm outline in the text

County Yuma County, AZ

The Yuma radar (KYUX), 112 km from the middle of the area, began a volume at 03:25 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS55 KPSR 120326
SVRPSR
AZC027-120415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
824 PM MST THU JUL 11 2002

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL YUMA COUNTY IN SOUTHWEST ARIZONA...

* UNTIL 915 PM MST.

THE AFFECTED AREA INCLUDES AZTEC...DATELAND...MOHAWK...AND TACNA.

* AT 820 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER DATELAND...OR ABOUT 47 MILES WEST OF GILA
  BEND...MOVING SOUTHWEST AT 35 MPH.


DAMAGING MICROBURST WINDS ARE LIKELY WITH THIS STORM. TAKE COVER IN A
STURDY STRUCTURE UNTIL THE STORM PASSES.


LAT...LON 3271 11335 3313 11347 3268 11397 3252 11335

AJ

NWS Phoenix, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 11, 2:55 PM MST, 5 hours 31 minutes earlier.

AZZ020>028-CAZ030>033-120545-

SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
255 PM MST THU JUL 11 2002

.SYNOPSIS...
STRONG HIGH PRESSURE ALOFT WILL REMAIN CENTERED IN THE VICINITY OF
IDAHO...UTAH...AND WYOMING AT LEAST THROUGH EARLY NEXT WEEK. THIS
MEANS A CONTINUATION OF HUMID AND UNSTABLE AIR FROM THE EAST IN THE
CLOCKWISE FLOW AROUND THE HIGH PRESSURE CENTER. THIS WILL RESULT IN
SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS...AND BLOWING
DESERT DUST.

.DISCUSSION...
A HUMID AND UNSTABLE AIRMASS CONTINUES WITH TODAY EXPECTED TO BE THE
THIRD DAY IN A ROW WITH THE AVERAGE SURFACE DEW POINT TEMPERATURE AT
PHOENIX SKY HARBOR EXPECTED TO BE ABOVE 55 DEGREES. STRONG HIGH
PRESSURE ALOFT WILL REMAIN CENTERED NORTH OF ARIZONA THE REST OF THE
WEEK AND AT LEAST THROUGH EARLY NEXT WEEK. THIS MEANS A CONTINUATION
OF HUMID AND UNSTABLE AIR FROM THE EAST IN THE CLOCKWISE FLOW AROUND
THE HIGH PRESSURE CENTER. FORECAST AT THIS TIME OF YEAR IS MORE THAN
THE USUAL CHALLENGE. IT LOOKS AS IF THERE IS A WEAK LOW PRESSURE
SYSTEM IN THE FLOW FROM THE EAST THAT WILL MOVE WEST ACROSS CENTRAL
AND SOUTHERN ARIZONA TONIGHT WHICH WILL HELP TO TRIGGER THE
DEVELOPMENT OF THUNDERSTORMS IN SOUTH-CENTRAL ARIZONA TONIGHT WITH A
POSSIBILITY OF SOME STORMS CONTINUING OR REDEVELOPING DURING THE
NIGHT. THE LOWEST LEVELS OF THE ATMOSPHERE ARE STILL RELATIVELY DRY.
SO IT LOOKS AS IF THE MAIN THING TO WATCH FOR IS GUSTY WIND WITH
BLOWING DUST...AND OF COURSE LIGHTNING.

.PSR...NONE.

ELLIS

Severe Thunderstorm Warnings in Arizona, 2002Every severe thunderstorm warning in 2002

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.