Alert archive / Arizona / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 35, NWS Phoenix, AZ

July 24, 2009Yuma County, Arizona; Imperial County, California

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 24, 2009, 2:49 PM MST for Yuma County, Arizona; Imperial County, California. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 24, 2009, 2:49 PM MST (21:49 UTC)
Expired
Jul 24, 2009, 3:30 PM MST
In force
41 min
Issued by
NWS Phoenix, AZ
Area
Storm-based polygon

Counties Yuma County, AZ, Imperial County, CA

The radar

The Yuma radar (KYUX), 46 km from the middle of the area, began a volume at 21:50 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.

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 Jul 24, 11:13 AM MST, 3 hours 36 minutes earlier.

Area forecast discussion, Jul 24, 11:13 AM MST, 3 hours 36 minutes before
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Hazardous weather outlook, Jul 24, 5:23 AM MST, 9 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
523 AM MST FRI JUL 24 2009

AZZ022-023-027-028-251230-
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
523 AM MST FRI JUL 24 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH-CENTRAL
ARIZONA.

.DAY ONE...TODAY AND TONIGHT

A CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS...SOME BECOMING
SEVERE. STRONGEST STORMS HAVE THE POTENTIAL TO PRODUCE GUSTY WINDS IN
EXCESS OF 50 MPH...DENSE BLOWING DUST...AND LOCALLY HEAVY RAINFALL
THAT COULD QUICKLY LEAD TO FLOODING OF AREA ROADWAYS...WASHES AND
OTHER LOW LYING AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...THE ATMOSPHERE DRIES OUT BUT THERE IS STILL A SLIGHT
CHANCE FOR MAINLY AFTERNOON AND EVENING THUNDERSTORMS AND ASSOCIATED
WEATHER HAZARDS.

SUNDAY AND MONDAY...HOT DAYTIME TEMPERATURES RANGING FROM 109-112
DEGREES ACROSS MARICOPA COUNTY BOTH DAYS. IT IS A POSSIBILITY THAT
THRESHOLDS FOR EXCESSIVE HEAT MAY BE REACHED SUNDAY AND MONDAY.
TEMPERATURE FORECASTS SHOULD BE CLOSELY MONITORED.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AZZ024-251230-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
523 AM MST FRI JUL 24 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST-CENTRAL
ARIZONA.

.DAY ONE...TODAY AND TONIGHT

A CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS...SOME BECOMING
SEVERE. STRONGEST STORMS HAVE THE POTENTIAL TO PRODUCE GUSTY WINDS IN
EXCESS OF 45 MPH...AND LOCALLY HEAVY RAINFALL THAT COULD LEAD TO
FLOODING OF ROADWAYS...WASHES AND OTHER LOW LYING AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...THE ATMOSPHERE DRIES OUT BUT THERE IS STILL A SLIGHT
CHANCE FOR MAINLY AFTERNOON AND EVENING THUNDERSTORMS AND ASSOCIATED
WEATHER HAZARDS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AZZ020-021-025-026-CAZ030>033-251230-
LOWER COLORADO RIVER VALLEY AZ-WEST CENTRAL DESERTS-
YUMA/MARTINEZ LAKE AND VICINITY-SOUTHWEST DESERTS-
JOSHUA TREE NATIONAL PARK-LOWER COLORADO RIVER VALLEY CA-
RIVERSIDE COUNTY/EASTERN DESERTS-IMPERIAL COUNTY-
523 AM MST FRI JUL 24 2009 /523 AM PDT FRI JUL 24 2009/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWEST
ARIZONA...EXTREME WEST-CENTRAL ARIZONA...SOUTHWEST ARIZONA...WEST-
CENTRAL ARIZONA...EXTREME SOUTHEAST CALIFORNIA AND SOUTHEAST
CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT

A CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS...SOME BECOMING
SEVERE. THE STRONGEST STORMS HAVE THE POTENTIAL TO PRODUCE GUSTY
WINDS IN EXCESS OF 50 MPH...AREAS OF DENSE BLOWING DUST AND
SAND...AND LOCALLY HEAVY RAINFALL THAT COULD QUICKLY LEAD TO FLOODING
OF ROADWAYS...WASHES AND OTHER LOW LYING AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...THE ATMOSPHERE DRIES OUT BUT THERE IS STILL A SLIGHT
CHANCE FOR MAINLY AFTERNOON AND EVENING THUNDERSTORMS AND ASSOCIATED
WEATHER HAZARDS.

SUNDAY AND MONDAY...HOT DAYTIME TEMPERATURES RANGING FROM 110-114
DEGREES ALONG PORTIONS OF THE LOWER COLORADO RIVER VALLEY AND
SOUTHEAST CALIFORNIA. IT IS A POSSIBILITY THAT THRESHOLDS FOR
EXCESSIVE HEAT MAY BE REACHED SUNDAY AND MONDAY. TEMPERATURE
FORECASTS SHOULD BE CLOSELY MONITORED.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:05 PM MSTSpecial Weather StatementPSR55 min
Jul 23, 9:08 PM MSTSpecial Weather StatementPSRGila52 min
Jul 23, 9:36 PM MSTAreal Flood AdvisoryPSRGila114 min
Jul 23, 9:47 PM MSTSpecial Weather StatementPSRPinal58 min
Jul 23, 10:06 PM MSTSpecial Weather StatementPSRPinal54 min
Jul 23, 11:31 PM MSTSpecial Weather StatementPSR44 min
Jul 24, 1:12 PM MSTAreal Flood AdvisoryPSRLa Paz, Yuma108 min
Jul 24, 2:44 PM MSTAreal Flood AdvisoryPSRYuma2 hr
Jul 24, 3:27 PM MSTSpecial Weather StatementPSR48 min
Jul 24, 3:46 PM MSTAreal Flood AdvisoryPSRYuma119 min
Jul 24, 3:03 PM MSTSevere Thunderstorm WarningPSRRiverside42 min
Jul 24, 4:00 PM MSTAreal Flood AdvisoryPSRRiverside2 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2009Severe Thunderstorm Warnings in California, 2009Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.