Alert archive / Arizona / Special Weather Statements in 2012

Special Weather Statement, NWS Tucson, AZ

September 9, 2012

NWS Tucson, AZ issued this special weather statement at Sep 9, 2012, 4:36 PM MST. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 9, 2012, 4:36 PM MST (23:36 UTC)
Expired: Sep 9, 2012, 5:15 PM MST
In force: 39 min
Issued by: NWS Tucson, AZ

The radar

The Yuma radar (KYUX), 151 km from the middle of the area, began a volume at 23:36 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 text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this special weather statement went out at Sep 9, 2:49 PM MST, 1 hour 47 minutes earlier.

Area forecast discussion, Sep 9, 2:49 PM MST, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
248 AM MST SUN SEP 9 2012

.SYNOPSIS...PLENTY OF MOISTURE AROUND FOR SCATTERED SHOWERS AND
THUNDERSTORMS THIS EVENING...ESPECIALLY WEST OF TUCSON. A WEAK
WEATHER SYSTEM WILL PASS THROUGH THE REGION BRINGING MORE WIDESPREAD
THUNDERSTORMS TO THE AREA LATE MONDAY INTO TUESDAY. A DRIER WESTERLY
FLOW WILL LEAD TO MUCH LESS THUNDERSTORM ACTIVITY THE SECOND HALF OF
THE WEEK.

&&

.DISCUSSION...A WEAK UPPER LOW CENTERED OVER NORTHERN BAJA WAS
HELPING PRODUCE A FEW SHOWERS AND THUNDERSTORMS THIS AFTERNOON. MOST
OF THE ACTIVITY HAS BEEN ACROSS THE TOHONO O'ODHAM NATION AND FAR
WESTERN PIMA COUNTY. STILL ANTICIPATING THIS GENERAL AREA TO SEE THE
BULK OF THE STRONG THUNDERSTORMS AGAIN THIS EVENING WITH HEAVY
RAINFALL BEING THE MAIN CONCERN.

THE UPPER LOW OVER BAJA WILL EVENTUALLY MOVE FARTHER NORTH TO A
POSITION CENTERED OVER YUMA BY MONDAY EVENING...THEN TRACK THROUGH
NORTHERN ARIZONA ON TUESDAY. THAT SAID...THIS FEATURE WILL CONTINUE
TO INFLUENCE OUR WEATHER THROUGH LATE TUESDAY. THEREAFTER...A DRY
WESTERLY FLOW ALOFT WAS PROGGED TO DEVELOP OVER THE REGION. THIS
WILL RESULT IN DIMINISHING RAIN CHANCES WEDNESDAY...WITH LITTLE OR
NO CHANCE OF RAIN BY THE WEEKEND.

&&

.AVIATION...SCT-BKN CLOUDS MAINLY 6-10K FT AGL WILL PREVAIL INTO
MONDAY MORNING ACROSS SOUTHEAST AZ. BREEZY ELY/SELY WINDS WILL
CONTINUE ESPECIALLY FOR KTUS THRU SUNDOWN...THEN TAPERING OFF TO 10
KTS OR LESS FOR MOST LOCALES INTO MONDAY MORNING. BULK OF
-SHRA/-TSRA IS EXPECTED ONCE AGAIN ON A LINE FROM KTUS-KOLS WESTWARD
THROUGH ABOUT 10/03Z WITH MORE ISOLATED -SHRA/-TSRA EAST OF THIS
LINE. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...MAINLY AFTERNOON AND EVENING SCATTERED SHOWERS AND
THUNDERSTORMS THROUGH TUESDAY. DRIER WESTERLY FLOW WILL BEGIN TO
MOVE IN BY WEDNESDAY WITH A DOWNWARD TREND IN STORMS WEDNESDAY
THROUGH FRIDAY.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...NONE.

&&

VISIT US ON FACEBOOK...TWITTER...AND AT WEATHER.GOV/TUCSON

Hazardous weather outlook, Sep 9, 10:06 AM MST, 6 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1006 AM MST SUN SEP 9 2012

AZZ504>514-100300-
TUCSON METRO AREA-SOUTH CENTRAL PINAL COUNTY-
SOUTHEAST PINAL COUNTY-UPPER SAN PEDRO RIVER VALLEY-
EASTERN COCHISE COUNTY BELOW 5000 FEET-UPPER GILA RIVER VALLEY-
WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES-
GALIURO AND PINALENO MOUNTAINS-CHIRICAHUA MOUNTAINS-
DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS-
CATALINA AND RINCON MOUNTAINS-
1006 AM MST SUN SEP 9 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARIZONA.

.DAY ONE...TODAY AND TONIGHT

AFTER A ROUND OF SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THIS
MORNING...MORE SHOWERS AND THUNDERSTORMS CAN BE EXPECTED THIS
AFTERNOON AND EVENING. THE MAIN THREAT WILL BE LOCALLY HEAVY
RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A WEAK WEATHER SYSTEM EXITING BAJA WILL BRING WIDESPREAD SHOWERS
AND THUNDERSTORMS LATE MONDAY AND TUESDAY. LOCALLY HEAVY RAINFALL
WILL BE THE MAIN THREAT. ONCE THE SYSTEM EXITS...DRIER AIR WILL
MOVE INTO THE REGION RESULTING IN DIMINISHING RAIN CHANCES BY
THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

AZZ501>503-515-100300-
WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION-
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-BABOQUIVARI MOUNTAINS-
1006 AM MST SUN SEP 9 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
ARIZONA.

.DAY ONE...TODAY AND TONIGHT

CLEARING SKIES THIS MORNING WILL GIVE WAY TO SCATTERED
THUNDERSTORMS THIS AFTERNOON AND EVENING. SEVERAL OF THE WASHES
AND SMALL STREAMS WERE EXPERIENCING FLOWS FROM RAIN YESTERDAY...SO
ADDITIONAL HEAVY RAINFALL TODAY MAY CAUSE FLOODING IN THOSE AREAS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A WEAK WEATHER SYSTEM EXITING BAJA WILL BRING WIDESPREAD SHOWERS
AND THUNDERSTORMS LATE MONDAY AND TUESDAY. LOCALLY HEAVY RAINFALL
WILL BE THE MAIN THREAT. ONCE THE SYSTEM EXITS...DRIER AIR WILL
MOVE INTO THE REGION RESULTING IN DIMINISHING RAIN CHANCES BY
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

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

WEATHER.GOV/TUCSON

In the hours before

Special weather statement, Sep 9, 4:36 PM MST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
436 PM MST SUN SEP 9 2012

AZZ501-100015-
WESTERN PIMA COUNTY INCLUDING AJO/ORGAN PIPE CACTUS NATIONAL MONUMENT
AZ-
436 PM MST SUN SEP 9 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PIMA COUNTY UNTIL
515 PM MST...

AT 430 PM MST...LOCAL LAW ENFORCEMENT REPORTED A STRONG THUNDERSTORM
NEAR AJO...OR 44 MILES SOUTH OF GILA BEND...MOVING WEST AT 10 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN...SMALL HAIL AND FREQUENT DANGEROUS LIGHTNING.

AREAS AFFECTED BY THIS STORM INCLUDE...AJO.

LAT...LON 3204 11333 3249 11331 3249 11270 3188 11281
TIME...MOT...LOC 2335Z 095DEG 9KT 3233 11286

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 9:55 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Sep 9, 8:40 AM MST	Areal Flood Advisory	TWC	Pima, Pinal	2 hr
Sep 9, 2:32 PM MST	Areal Flood Advisory	TWC	Pima	118 min
Sep 9, 4:38 PM MST	Areal Flood Advisory	TWC	Pima	3 hr

Nearby

Special Weather Statements in Arizona, 2012 Every special weather statement in 2012

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.