Alert archive / Arizona / Blowing Dust Advisories in 2011

Blowing Dust Advisory 2, NWS Phoenix, AZ

October 4, 2011

NWS Phoenix, AZ issued this blowing dust advisory at Oct 4, 2011, 1:11 PM MST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Oct 4, 2011, 1:11 PM MST (20:11 UTC)
Expired
Oct 4, 2011, 5:25 PM MST
In force
4 hr
Issued by
NWS Phoenix, AZ

What forecasters said that day

The local office's own words before this blowing dust advisory 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 blowing dust advisory went out at Oct 4, 10:30 AM MST, 2 hours 41 minutes earlier.

Area forecast discussion, Oct 4, 10:30 AM MST, 2 hours 41 minutes before
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Hazardous weather outlook, Oct 4, 5:19 AM MST, 7 hours 52 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
519 AM MST TUE OCT 4 2011

AZZ024-051300-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
519 AM MST TUE OCT 4 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST-CENTRAL ARIZONA.

.DAY ONE...TODAY AND TONIGHT.

A LOW PRESSURE SYSTEM MOVING INTO SOUTH CENTRAL ARIZONA WILL BRING A
GOOD CHANCE FOR THUNDERSTORMS MAINLY DURING THE AFTERNOON AND EVENING
HOURS. SOME OF THE STORMS MAY BE STRONG...AND COULD PRODUCE GUSTY
WINDS IN EXCESS OF 50 MPH...SMALL HAIL...LOCALLY HEAVY RAIN...AND
DEADLY LIGHTNING. RAINFALL COULD PRODUCE MINOR FLOODING OF ROADS AND
WASHES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A SECOND VIGOROUS PACIFIC LOW PRESSURE SYSTEM WILL MOVE THROUGH
SOUTHERN GILA COUNTY THURSDAY INTO THURSDAY NIGHT. THE LOW WILL
PRODUCE LOCALLY WINDY CONDITIONS ALONG WITH MODERATE TO HEAVY
SHOWERS. RAINFALL MAY EXCEED ONE HALF INCH AND BE SUFFICIENT TO CAUSE
LOCAL FLOODING OF ROADS...STREAMS AND WASHES...AS WELL AS OTHER LOW
LYING AREAS. ALTHOUGH THUNDERSTORMS ARE NOT EXPECTED...WE CAN NOT
RULE OUT AN ISOLATED STORM DURING THE EVENING HOURS THURSDAY. GUSTY
WINDS IN EXCESS OF 40 MPH...BRIEF HEAVY RAIN AND DEADLY LIGHTNING ARE
ALL POSSIBLE WITH ANY STORMS THAT FORM.

DRY AND WARMER WEATHER WILL FOLLOW BEGINNING ON FRIDAY AND CONTINUING
INTO EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

AZZ021>023-026>028-051300-
WEST CENTRAL DESERTS-NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHWEST DESERTS-SOUTHWEST MARICOPA COUNTY-
NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
519 AM MST TUE OCT 4 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH-CENTRAL
ARIZONA...SOUTHWEST ARIZONA AND WEST-CENTRAL ARIZONA.

.DAY ONE...TODAY AND TONIGHT.

A VIGOROUS PACIFIC LOW PRESSURE SYSTEM WILL MOVE THROUGH THE WESTERN
AND CENTRAL DESERTS TODAY...AND WILL LEAD TO A CHANCE OF
THUNDERSTORMS. SOME OF THE STORMS MAY BE QUITE STRONG AND CAPABLE OF
PRODUCING GUSTY WINDS IN EXCESS OF 50 MPH...AS WELL AS DENSE BLOWING
SAND AND DUST...SMALL HAIL AND LOCALLY HEAVY RAINFALL. DEADLY CLOUD
TO GROUND LIGHTNING IS ALSO POSSIBLE. THE STRONGEST STORMS WILL
LIKELY OCCUR DURING THE AFTERNOON AND EARLY EVENING HOURS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A SECOND STRONG PACIFIC LOW PRESSURE SYSTEM WILL MOVE EAST AND ACROSS
THE LOWER DESERTS LATE WEDNESDAY NIGHT THROUGH THURSDAY EVENING.
THERE WILL BE A GOOD CHANCE FOR SHOWERS...AND THE SHOWERS MAY PRODUCE
LOCALLY HEAVY RAINFALL AT TIMES...WHICH MAY LEAD TO SOME MINOR
FLOODING OF ROADS...STREAMS...WASHES AND LOW LYING AREAS. THERE WILL
BE JUST A SLIGHT CHANCE FOR AN AFTERNOON OR EARLY EVENING
THUNDERSTORM MAINLY ACROSS THE NORTHERN PORTIONS OF MARICOPA COUNTY
AS WELL AS LA PAZ COUNTY. THE MAIN HAZARDS ASSOCIATED WITH THE
THUNDERSTORMS WILL BE GUSTY WINDS IN EXCESS OF 45 MPH...BRIEF HEAVY
RAINFALL...DENSE BLOWING DUST...SMALL HAIL AND DEADLY LIGHTNING. THE
THREAT FOR THUNDERSTORMS WILL BE CONSIDERABLY LESS THAN THAT POSED ON
TUESDAY.

HIGHER PRESSURE WILL BUILD IN FROM THE WEST BEGINNING ON FRIDAY AND
THIS WILL LEAD TO SUNNY DAYS...CLEAR NIGHTS AND A MARKED WARMING
TREND THROUGH THE WEEKEND AND INTO EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

AZZ020-025-CAZ030>032-051300-
LOWER COLORADO RIVER VALLEY AZ-YUMA/MARTINEZ LAKE AND VICINITY-
JOSHUA TREE NATIONAL PARK-LOWER COLORADO RIVER VALLEY CA-
RIVERSIDE COUNTY/EASTERN DESERTS-
519 AM MST TUE OCT 4 2011 /519 AM PDT TUE OCT 4 2011/

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

.DAY ONE...TODAY AND TONIGHT.

A VIGOROUS PACIFIC LOW PRESSURE SYSTEM WILL MOVE ACROSS THE AREA
TODAY...LEADING TO A CHANCE OF THUNDERSTORMS. THE PRIMARY WEATHER
HAZARDS INCLUDE GUSTY WINDS IN EXCESS OF 45 MPH...DENSE BLOWING DUST
AND SAND...BRIEF MODERATE TO HEAVY RAINFALL...SMALL HAIL AND DEADLY
CLOUD TO GROUND LIGHTNING. THE STRONGEST STORMS WILL LIKELY OCCUR
FROM MID MORNING INTO THE AFTERNOON.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A SECOND COLD PACIFIC LOW PRESSURE SYSTEM WILL MOVE ACROSS THE AREA
WEDNESDAY NIGHT INTO THE DAY ON THURSDAY. THE LOW WILL LEAD TO
LOCALLY HEAVY RAIN OR RAIN SHOWERS...STRONG GUSTY WINDS...AND
LOCALLY DENSE BLOWING DUST AND SAND. THUNDERSTORMS ARE NOT EXPECTED
TO DEVELOP.

HIGHER PRESSURE WILL BUILD INTO THE AREA ON FRIDAY...AND LEAD TO
SUNNY DAYS...CLEAR NIGHTS AND A MARKED WARMING TREND THROUGH THE
WEEKEND AND INTO EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

CAZ033-051300-
IMPERIAL COUNTY-
519 AM PDT TUE OCT 4 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHEAST CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT.

A FAST MOVING PACIFIC LOW PRESSURE SYSTEM WILL MOVE ACROSS IMPERIAL
COUNTY TODAY...AND LEAD TO A SLIGHT CHANCE OF THUNDERSTORMS. THE
PRIMARY WEATHER HAZARDS INCLUDE GUSTY WINDS IN EXCESS OF 45 MPH...
DENSE BLOWING DUST AND SAND...BRIEF MODERATE TO HEAVY RAINFALL...
SMALL HAIL AND DEADLY LIGHTNING. IN ADDITION...THERE WILL BE GUSTY
SOUTHWEST TO WEST WINDS DEVELOPING DURING THE AFTERNOON AND
CONTINUING INTO THE EVENING HOURS. THESE WINDS WILL NOT BE ASSOCIATED
WITH THUNDERSTORMS...HOWEVER THEY MAY REACH TO NEAR 40 MPH AT TIMES.
A WIND ADVISORY MAY NEED TO BE ISSUED FOR THIS EVENING. THESE WINDS
COULD ALSO LEAD TO PATCHY DENSE BLOWING SAND AND DUST.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A SECOND COLD PACIFIC LOW PRESSURE SYSTEM WILL MOVE ACROSS IMPERIAL
COUNTY WEDNESDAY NIGHT INTO THURSDAY...BRINGING A CHANCE OF SHOWERS.
BRIEF MODERATE TO HEAVY RAIN COULD OCCUR WITH THE SHOWERS...HOWEVER
FLOODING IS NOT EXPECTED TO OCCUR. THE MAIN WEATHER HAZARD WITH THE
LOW WILL BE STRONG GUSTY WEST WIND MAINLY DURING THE EVENING HOURS ON
WEDNESDAY. THE GUSTS COULD REACH TO 40 MPH AND A WIND ADVISORY MAY
NEED TO BE ISSUED. LOCALLY DENSE BLOWING DUST AND SAND MAY OCCUR WITH
THESE WINDS.

HIGHER PRESSURE WILL DEVELOP ACROSS THE AREA ON FRIDAY AND LEAD TO
SUNNY DAYS...CLEAR NIGHTS AND A MARKED WARMING TREND THROUGH THE
WEEKEND AND INTO EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

In the hours before

Special weather statement, Oct 4, 9:56 AM MST, 3 hours 15 minutes before
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Special weather statement, Oct 4, 10:11 AM MST, 3 hours before
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Special weather statement, Oct 4, 12:28 PM MST, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
1228 PM MST TUE OCT 4 2011

AZZ027-042015-
MARICOPA AZ-
1228 PM MST TUE OCT 4 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHWESTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA

UNTIL 115 PM MST

AT 1223 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 10 MILES EAST OF SENTINEL...MOVING NORTHEAST AT
35 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  INTERSTATE EIGHT BETWEEN SENTINEL AND GILA BEND...

LAT...LON 3324 11293 3311 11264 3266 11297 3264 11314
      3289 11317
TIME...MOT...LOC 1928Z 207DEG 29KT 3287 11304

INIGUEZ
Special weather statement, Oct 4, 12:51 PM MST, 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
1251 PM MST TUE OCT 4 2011

AZZ022-023-027-028-050030-
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
INCLUDING THE CITIES OF...BUCKEYE...LAKE PLEASANT...MORRISTOWN...
NEW RIVER...TONOPAH...WICKENBURG...CAREFREE...CAVE CREEK...
CHANDLER...FOUNTAIN HILLS...GILBERT...GLENDALE...MESA...PEORIA...
PHOENIX...SCOTTSDALE...SUN CITY...TEMPE...GILA BEND...
APACHE JUNCTION...CASA GRANDE...COOLIDGE...AND FLORENCE
1251 PM MST TUE OCT 4 2011

STRONG WINDS AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM HAS RESULTED
IN WIDESPREAD AREAS OF BLOWING DUST ACROSS MARICOPA AND NORTHWEST
PINAL COUNTIES THIS AFTERNOON. VISIBILITY WILL VARY GREATLY...EVEN
OVER SHORT DISTANCES...VARYING FROM GREATER THAN FIVE MILES TO LESS
THAN A HALF MILE. ISOLATED AREAS WILL DROP BRIEFLY DROP TO A QUARTER
MILE. BLOWING DUST WILL CONTINUE THROUGH THE REMAINDER OF THE
AFTERNOON.

STAY UP-TO-DATE ON THE LATEST FORECASTS BY LISTENING TO WEATHER RADIO
ON THE PUBLIC SERVICE BAND. MORE DETAILED INFORMATION IS AVAILABLE
FROM THE NATIONAL WEATHER SERVICE IN PHOENIX 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 4, 9:56 AM MSTSpecial Weather StatementPSR34 min
Oct 4, 10:11 AM MSTSpecial Weather StatementPSR49 min
Oct 4, 12:28 PM MSTSpecial Weather StatementPSR47 min
Oct 4, 1:28 PM MSTSpecial Weather StatementPSR47 min

Nearby

Blowing Dust Advisories in Arizona, 2011Every blowing dust advisory in 2011

Sources

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