Alert archive / Arizona / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 1, NWS Phoenix, AZ

February 9, 2009Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Feb 9, 2009, 11:47 AM MST for Maricopa County, Arizona. It was in force for 28 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: Feb 9, 2009, 11:47 AM MST (18:47 UTC)
Expired: Feb 9, 2009, 12:15 PM MST
In force: 28 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 18:49 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 Feb 9, 10:15 AM MST, 1 hour 32 minutes earlier.

Area forecast discussion, Feb 9, 10:15 AM MST, 1 hour 32 minutes before

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Hazardous weather outlook, Feb 9, 5:31 AM MST, 6 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
531 AM MST MON FEB 9 2009

AZZ022>024-027-028-100115-
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
531 AM MST MON FEB 9 2009

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

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 11 AM MST
TUESDAY FOR SOUTHERN GILA COUNTY...

.DAY ONE...TODAY AND TONIGHT

ANOTHER STRONG PACIFIC STORM WILL MOVE ACROSS THE AREA TODAY. THIS
WILL BE A COLDER SYSTEM WITH SNOW LEVELS FALLING TO NEAR 4000 FEET
IN SOUTHERN GILA COUNTY. SNOW TOTALS WILL RANGE FROM 1 TO 3 INCHES
ABOVE 4000 FEET...AND 3 TO 5 INCHES ABOVE 5000 FEET. CHANCES OF
RAINFALL WILL INCREASE TONIGHT ACROSS THE LOWER DESERTS OF SOUTH-
CENTRAL ARIZONA AS WELL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

TUESDAY...SNOW SHOWERS WILL CONTINUE TUESDAY MORNING THROUGH TUESDAY
AFTERNOON...WITH SNOW LEVELS FALLING TO NEAR 3000 FEET IN SOUTHERN
GILA COUNTY. AN ADDITIONAL 1 TO 3 INCHES WILL BE POSSIBLE ABOVE 3000
FEET. SNOW SHOULD TAPER OFF LATE TUESDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

AZZ020-021-025-026-CAZ030>033-100115-
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-
531 AM MST MON FEB 9 2009 /431 AM PST MON FEB 9 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.

...WIND ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 7 PM PST THIS
EVENING FOR IMPERIAL COUNTY IN SOUTHEAST CALIFORNIA...

.DAY ONE...TODAY AND TONIGHT

WINDY CONDITIONS WILL DEVELOP ACROSS SOUTHEAST CALIFORNIA...ESPECIALLY
IN IMPERIAL COUNTY...WHERE STRONG WEST WINDS OF 30 MPH WITH GUSTS IN
EXCESS OF 40 MPH WILL BE COMMON. AREAS OF BLOWING DUST MAY BRIEFLY
REDUCE VISIBILITIES BELOW ONE MILE AT TIMES. THERE IS ALSO A CHANCE
OF SHOWERS TODAY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

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.

Issued	Product	Office	Counties	Lasted
Feb 8, 8:50 PM MST	Winter Storm Warning	PSR		38 hr
Feb 9, 4:29 AM MST	Wind Advisory	PSR		21 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2009 Every 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.