Alert archive / Arizona / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 137, NWS Phoenix, AZ

October 11, 2008Maricopa County, Pinal County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Oct 11, 2008, 5:15 AM MST for Maricopa County, Pinal County, Arizona. It was in force for 45 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
Oct 11, 2008, 5:15 AM MST (12:15 UTC)
Expired
Oct 11, 2008, 6:00 AM MST
In force
45 min
Issued by
NWS Phoenix, AZ
Area
Storm-based polygon

Counties Maricopa County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 29 km from the middle of the area, began a volume at 11:57 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 Oct 11, 4:35 AM MST, 40 minutes earlier.

Area forecast discussion, Oct 11, 4:35 AM MST, 40 minutes before
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Hazardous weather outlook, Oct 10, 3:18 PM MST, 13 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
318 PM MST FRI OCT 10 2008

AZZ022>024-027-028-111030-
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
318 PM MST FRI OCT 10 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

A STRONG LOW PRESSURE SYSTEM MOVING INTO THE REGION WILL MEAN WINDS
WILL CONTINUE TO INCREASE ACROSS THE AREA TONIGHT. WINDS THROUGH
TONIGHT WILL BE STRONGEST NEAR ISOLATED MOUNTAIN TOP LOCATIONS WHERE
WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE. ACROSS THE LOWER ELEVATIONS
WIND GUSTS UP TO 35 MPH WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...A COLD FRONT ASSOCIATED WITH THE LOW PRESSURE SYSTEM WILL
MOVE INTO CENTRAL ARIZONA LATE SATURDAY MORNING. WINDS WILL INCREASE
AHEAD AND BEHIND THE FRONT ACROSS MARICOPA...NORTHWEST PINAL...AND
SOUTHERN GILA COUNTIES. A WIND ADVISORY IS IN EFFECT FOR THESE AREAS
FROM 10 AM THROUGH 6 PM SATURDAY. SUSTAINED WINDS OF 25 TO 35 MPH
WITH GUSTS UP TO 45 MPH WILL BE LIKELY. WIND GUSTS OVER 50 MPH CAN BE
EXPECTED AT MOUNTAIN TOP LOCATIONS.

IN ADDITION...MUCH DRIER AIR WILL BE MOVING IN BEHIND THE FRONT. RH
VALUES AND WINDS MAY BRIEFLY REACH CRITICAL THRESHOLD HOWEVER NO
PROLONGED/EXTENDED PERIODS ARE EXPECTED.

SUNDAY THROUGH THURSDAY...NO WEATHER HAZARDS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

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

SPOTTER ACTIVATION WILL NOT BE NEEDED.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

CAZ030-032-033-111030-
JOSHUA TREE NATIONAL PARK-RIVERSIDE COUNTY/EASTERN DESERTS-
IMPERIAL COUNTY-
318 PM PDT FRI OCT 10 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHEAST
CALIFORNIA AND SOUTHEAST CALIFORNIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SUSTAINED WINDS OF 20 TO 30 MPH WITH GUSTS UP TO 45 MPH CAN BE
EXPECTED THROUGH LATE TONIGHT AS A COLD FRONT MOVES THROUGH THE
REGION. A WIND ADVISORY IS IN EFFECT FROM 5 PM FRIDAY THROUGH 2 AM
SATURDAY. IN ADDITION DRIER AIR WILL MOVE IN FROM THE NORTHWEST
MEANING DANGEROUS FIRE WEATHER CONDITIONS WILL DEVELOP MAINLY ACROSS
JOSHUA TREE NATIONAL PARK THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...BREEZY TO WINDY CONDITIONS WILL CONTINUE ON SATURDAY WITH
GUSTS APPROACHING 40 MPH. WINDS WILL QUICKLY SUBSIDE NEAR SUNSET.

SUNDAY THROUGH THURSDAY...NO WEATHER HAZARDS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

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

SPOTTER ACTIVATION WILL NOT BE NEEDED.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

AZZ020-021-025-026-CAZ031-111030-
LOWER COLORADO RIVER VALLEY AZ-WEST CENTRAL DESERTS-
YUMA/MARTINEZ LAKE AND VICINITY-SOUTHWEST DESERTS-
LOWER COLORADO RIVER VALLEY CA-
318 PM MST FRI OCT 10 2008 /318 PM PDT FRI OCT 10 2008/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO WEATHER HAZARDS EXPECTED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...BREEZY TO WINDY CONDITIONS WILL SPREAD ACROSS SOUTHWEST
ARIZONA SATURDAY AS A COLD FRONT MOVES THROUGH THE REGION. SUSTAINED
WINDS OF 15 TO 25 MPH WITH GUSTS APPROACHING 40 MPH WILL BE LIKELY.
AREAS OF BLOWING MAY ALSO DEVELOP BRIEFLY REDUCING VISIBILITY DOWN TO
ONE MILE OR LESS.

IN ADDITION...MUCH DRIER AIR WILL BE MOVING IN BEHIND THE FRONT. RH
VALUES AND WINDS MAY BRIEFLY REACH CRITICAL THRESHOLD HOWEVER NO
PROLONGED/EXTENDED PERIODS ARE EXPECTED.

SUNDAY THROUGH THURSDAY...NO WEATHER HAZARDS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

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

SPOTTER ACTIVATION WILL NOT BE NEEDED.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

INIGUEZ

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 4:30 AM MSTRed Flag WarningPSRLa Paz, Maricopa, Pinal, Yuma10 hr
Oct 11, 7:40 AM MSTSevere Thunderstorm WarningPSRGila50 min
Oct 11, 8:09 AM MSTWind AdvisoryPSR6 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2008Every severe thunderstorm warning in 2008

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.