Alert archive / Arizona / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 13, NWS Phoenix, AZ

July 28, 2010Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 28, 2010, 4:11 PM MST for Maricopa County, Arizona. It was in force for 37 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 28, 2010, 4:11 PM MST (23:11 UTC)
Expired
Jul 28, 2010, 4:48 PM MST
In force
37 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 23:13 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 28, 3:25 PM MST, 46 minutes earlier.

Area forecast discussion, Jul 28, 3:25 PM MST, 46 minutes before
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Hazardous weather outlook, Jul 28, 5:09 AM MST, 11 hours 2 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
509 AM MST WED JUL 28 2010

AZZ021>024-026>028-291215-
WEST CENTRAL DESERTS-NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
SOUTHWEST DESERTS-SOUTHWEST MARICOPA COUNTY-
NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
509 AM MST WED JUL 28 2010

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON OVER THE MOUNTAINS OF
EASTERN AND SOUTHERN ARIZONA...INCLUDING THE GLOBE-MIAMI AREA...THEN
MIGRATE INTO THE CENTRAL ARIZONA DESERTS...INCLUDING THE PHOENIX
AREA...THIS EVENING. WITH THE ATMOSPHERE CURRENTLY VERY MOIST HIGH
RAINFALL RATES WILL BE POSSIBLE WITH ANY THUNDERSTORM THAT DEVELOPS.
STORMS WILL GENERALLY BE SLOW MOVING RAISING THE THREAT OF LOCALIZED
FLASH FLOODING. GUSTY WINDS AND FREQUENT LIGHTNING WILL ALSO BE
POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

GREATER THUNDERSTORM COVERAGE IS EXPECTED THURSDAY AFTERNOON AND
EVENING. HEAVY RAINFALL WITH LOCALIZED FLASH FLOODING WILL REMAIN
POSSIBLE AS WELL AS GUSTY WINDS AND FREQUENT LIGHTNING.

LESS THUNDERSTORM ACTIVITY IS EXPECTED FRIDAY FOLLOWED BY ANOTHER
INCREASE SATURDAY. THE AIRMASS WILL STILL BE VERY MOIST THROUGH
SATURDAY MEANING LOCALIZED FLASH FLOODING WILL REMAIN POSSIBLE.

THUNDERSTORM ACTIVITY WILL BEGIN TO DECREASE IN COVERAGE SUNDAY THEN
BE CONFINED TO THE EASTERN ARIZONA MOUNTAINS MONDAY THROUGH
WEDNESDAY. MOISTURE LEVELS WILL LOWER ALLOWING THE FLASH FLOOD THREAT
TO DECREASE.

.SPOTTER INFORMATION STATEMENT...

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

SPOTTER ACTIVATION WILL NOT BE NEEDED.

AZZ020-025-CAZ030>033-291215-
LOWER COLORADO RIVER VALLEY AZ-YUMA/MARTINEZ LAKE AND VICINITY-
JOSHUA TREE NATIONAL PARK-LOWER COLORADO RIVER VALLEY CA-
RIVERSIDE COUNTY/EASTERN DESERTS-IMPERIAL COUNTY-
509 AM MST WED JUL 28 2010 /509 AM PDT WED JUL 28 2010/

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

.DAY ONE...TODAY AND TONIGHT

NO WEATHER HAZARDS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS WILL BE POSSIBLE SUNDAY AS A LOW PRESSURE SYSTEM MOVES
NORTH OUT OF SONORA INTO THE SOUTHWEST U.S. LOCALIZED FLASH FLOODING
WILL BE POSSIBLE AS THE ATMOSPHERE WILL BE VERY MOIST. GUSTY WINDS IN
EXCESS OF 45 MPH AND FREQUENT LIGHTNING WILL ALSO BE POSSIBLE.

.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

In the hours before

Special weather statement, Jul 28, 3:51 PM MST, 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
351 PM MST WED JUL 28 2010

AZZ024-282315-
GILA AZ-
351 PM MST WED JUL 28 2010

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTH CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA

UNTIL 415 PM MST

AT 345 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 8 MILES SOUTH OF GLOBE...MOVING NORTHWEST AT 10
MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS IMPACTED INCLUDE...
   GLOBE...

SOME UNSECURED OBJECTS WILL BE BLOWN AROUND...TREE LIMBS COULD BE
SNAPPED OFF AND ISOLATED POWER OUTAGES WILL BE POSSIBLE. SEEK SHELTER
INDOORS UNTIL THE STORM PASSES.

HEAVY RAIN IS ALSO FALLING WITH THIS STORM...WHICH MAY RESULT IN
FLOODING OF LOW-LYING AREAS. MOTORISTS ON HIGHWAY 77 SOUTH OF GLOBE
SHOULD TRAVEL WITH CAUTION.

LAT...LON 3339 11098 3350 11088 3328 11062 3308 11082
TIME...MOT...LOC 2250Z 129DEG 7KT 3327 11078

WOODALL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 5:07 PM MSTSpecial Weather StatementPSR23 min
Jul 27, 5:12 PM MSTSpecial Weather StatementPSRGila33 min
Jul 27, 6:01 PM MSTSpecial Weather StatementPSRGila29 min
Jul 27, 6:03 PM MSTAreal Flood AdvisoryPSRGila66 min
Jul 27, 6:52 PM MSTSpecial Weather StatementPSR23 min
Jul 27, 7:23 PM MSTAreal Flood AdvisoryPSRMaricopa, Pinal112 min
Jul 28, 3:15 PM MSTFlood WatchPSR4 hr
Jul 28, 3:51 PM MSTSpecial Weather StatementPSRGila24 min
Jul 28, 4:19 PM MSTSpecial Weather StatementPSRPinal41 min
Jul 28, 4:22 PM MSTAreal Flood AdvisoryPSRMaricopa113 min
Jul 28, 4:34 PM MSTSevere Thunderstorm WarningPSRPinal56 min
Jul 28, 4:37 PM MSTAreal Flood AdvisoryPSRGila, Maricopa, Pinal113 min
Jul 28, 4:59 PM MSTFlash Flood WarningPSRGila91 min
Jul 28, 4:59 PM MSTSevere Thunderstorm WarningPSRGila39 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2010Every severe thunderstorm warning in 2010

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.