Alert archive / Arizona / Areal Flood Advisories in 2015

Areal Flood Advisory 21, NWS Phoenix, AZ

July 5, 2015Pinal County, Arizona

NWS Phoenix, AZ issued this areal flood advisory at Jul 5, 2015, 2:53 PM MST for Pinal County, Arizona. It was in force for 112 min.

The area

The counties it named.

The facts

Issued: Jul 5, 2015, 2:53 PM MST (21:53 UTC)
Expired: Jul 5, 2015, 4:45 PM MST
In force: 112 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 21:56 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 nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 9.9 hours before the alert went out and 82 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2 J/kg
Mixed-layer CIN: -277 J/kg
Mixed-layer LCL: 2521 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood advisory went out at Jul 5, 10:05 AM MST, 4 hours 48 minutes earlier.

Area forecast discussion, Jul 5, 10:05 AM MST, 4 hours 48 minutes before

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In the hours before

Special weather statement, Jul 5, 1:27 PM MST, 1 hour 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
127 PM MST SUN JUL 5 2015

AZZ023-028-052100-
GREATER PHOENIX AREA AZ-NORTHWEST AND NORTH CENTRAL PINAL COUNTY AZ-
127 PM MST SUN JUL 5 2015

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL PINAL AND CENTRAL MARICOPA COUNTIES

UNTIL 200 PM MST

AT 126 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
SAN TAN MOUNTAIN PARK...OR 12 MILES NORTHWEST OF COOLIDGE...MOVING
EAST AT 15 MPH.

WIND GUSTS UP TO 50 MPH AND BLOWING DUST WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
MESA...CHANDLER...GILBERT...QUEEN CREEK...BLACKWATER...SAN TAN
VALLEY...MAGMA...CHANDLER HEIGHTS...SEVILLE...SAN TAN MOUNTAIN PARK
AND SACATON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY DENSE BLOWING DUST IS POSSIBLE.  IF YOU ENCOUNTER BLOWING
DUST WHILE DRIVING...PULL OVER AS FAR OFF THE ROADWAY AS POSSIBLE AND
PARK. TURN OFF YOUR HEADLIGHTS AND KEEP YOUR FOOT OFF THE BRAKE.

&&

LAT...LON 3301 11170 3321 11178 3335 11157 3305 11143
TIME...MOT...LOC 2026Z 258DEG 12KT 3314 11161

18

Special weather statement, Jul 5, 1:53 PM MST, 1 hour before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
153 PM MST SUN JUL 5 2015

AZZ028-052145-
NORTHWEST AND NORTH CENTRAL PINAL COUNTY AZ-
153 PM MST SUN JUL 5 2015

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHWESTERN PINAL COUNTY

UNTIL 245 PM MST

AT 152 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ARIZONA CITY...OR 8 MILES SOUTH OF CASA GRANDE...MOVING WEST AT 10
MPH.

WINDS UP TO 40 MPH AND TORRENTIAL RAIN WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
CASA GRANDE...ARIZONA CITY AND ARIZOLA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3276 11174 3276 11177 3280 11178 3279 11187
      3285 11188 3286 11164 3276 11161 3273 11167
      3273 11174
TIME...MOT...LOC 2052Z 081DEG 10KT 3277 11175

18

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 1:07 PM MST	Areal Flood Advisory	PSR	Pinal	113 min
Jul 5, 1:27 PM MST	Special Weather Statement	PSR	Pinal	33 min
Jul 5, 1:53 PM MST	Special Weather Statement	PSR	Pinal	52 min
Jul 5, 2:15 PM MST	Areal Flood Advisory	PSR	Pinal	2 hr
Jul 5, 4:05 PM MST	Areal Flood Advisory	PSR	Maricopa	115 min
Jul 5, 4:16 PM MST	Special Weather Statement	PSR	La Paz	59 min
Jul 5, 4:49 PM MST	Flash Flood Warning	PSR	Maricopa	116 min
Jul 5, 4:57 PM MST	Severe Thunderstorm Warning	PSR	La Paz	33 min

Nearby

Areal Flood Advisories in Arizona, 2015 Every areal flood advisory in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.