Alert archive / Arizona / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Phoenix, AZ

July 9, 2021Gila County, Pinal County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 9, 2021, 9:32 PM MST for Gila County, Pinal County, Arizona. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 9, 2021, 9:32 PM MST (04:32 UTC)
Expired: Jul 10, 2021, 1:30 AM MST
In force: 4 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Gila County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 76 km from the middle of the area, began a volume at 04:35 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 was reported inside it

Time	Report	Where	Remark
Jul 9, 9:50 PM MST	FLASH FLOOD	4 Ssw Globe, AZ	CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 4 SSW GLOBE. DELAYED REPORT ICE HOUSE CANYON OVERTOPPED AT ICE HOUSE CANYON ROAD. SIGNIFICANT DEBRIS NOTED ON BANKS OF WASH. DEBRIS WASH UP AND COVERED ROAD SURFACE. TIME OF WARNING ESTIMATED. RAINFALL THAT CAUSED

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 4.5 hours before the alert went out and 104 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: 1011 J/kg
Mixed-layer CIN: -182 J/kg
Mixed-layer LCL: 3280 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

486 
WGUS55 KPSR 100432
FFWPSR
AZC007-021-100830-
/O.NEW.KPSR.FF.W.0026.210710T0432Z-210710T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
932 PM MST Fri Jul 9 2021

The National Weather Service in Phoenix has issued a

* Flash Flood Warning for...
  The Telegraph and Salt burn scar in...
  Gila County in east central Arizona...
  Pinal County in southeastern Arizona...

* Until 130 AM MST.

* At 932 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain over the Telegraph and Salt Burn Scars. Up to 1 inch of 
  rain has fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding in and around the Telegraph
           and Salt Burn Scars.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of areas in and around
           the Telegraph and Salt Burn Scars.

* Some locations that will experience flash flooding include...
  Globe, Miami, Claypool, Central Heights-Midland City, 
  Top-Of-The-World and Inspiration. Russell Gulch, Six Shooter 
  Canyon, and Ice House Canyon are also included.

This includes the following highways...
	AZ Route 70 between mile markers 253 and 255.
	AZ Route 188 between mile markers 214 and 224.
	US Highway 60 between mile markers 235 and 244.
	AZ Route 77 between mile markers 157 and 166.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause 
extensive and severe flash flooding of creeks...streams...and 
ditches in the Telegraph and Salt Burn Scars. Severe debris flows 
can also be anticipated across roads. Roads and driveways may be 
washed away in places. If you encounter flood waters...climb to 
safety.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3339 11100 3353 11097 3356 11087 3351 11072
      3346 11071 3335 11071 3324 11068 3320 11066
      3319 11082 3325 11091 3327 11099 3331 11102

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

Rogers

2 follow-up statements

700 
WGUS75 KPSR 100539
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
1039 PM MST Fri Jul 9 2021

AZC007-021-100830-
/O.CON.KPSR.FF.W.0026.000000T0000Z-210710T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-Pinal AZ-
1039 PM MST Fri Jul 9 2021

...FLASH FLOOD WARNING FOR THE TELEGRAPH AND SALT BURN SCAR REMAINS 
IN EFFECT UNTIL 130 AM MST SATURDAY FOR GILA AND PINAL COUNTIES...

At 1039 PM MST, Doppler radar indicated thunderstorms producing 
heavy rain over the Telegraph and Salt Burn Scar. Between 1 and 2 
inches of rain have fallen. Flash flooding is ongoing or expected to 
begin shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding in and around the Telegraph and Salt Burn
         Scar.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of areas in and around
         the Telegraph and Salt Burn Scar.

Some locations that will experience flash flooding include...
  Globe, Miami, Claypool, Central Heights-Midland City, 
  Top-Of-The-World and Inspiration.

This includes the following highways...
	AZ Route 70 between mile markers 253 and 255.
	AZ Route 188 between mile markers 214 and 224.
	US Highway 60 between mile markers 235 and 244.
	AZ Route 77 between mile markers 157 and 166.

Russel Gulch Canyon, Kellner Canyon, Ice House Canyon, Sixshooter 
Canyon, Pinal Creek, and Bloody Tanks Wash are all included in this 
warning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause 
extensive and severe flash flooding of creeks...streams...and 
ditches in the Telegraph and Salt Burn Scar. Severe debris flows can 
also be anticipated across roads. Roads and driveways may be washed 
away in places. If you encounter flood waters...climb to safety.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3339 11100 3353 11097 3356 11087 3351 11072
      3346 11071 3335 11071 3324 11068 3320 11066
      3319 11082 3325 11091 3327 11099 3331 11102

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Rogers

631 
WGUS75 KPSR 100824
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
124 AM MST Sat Jul 10 2021

AZC007-021-100834-
/O.EXP.KPSR.FF.W.0026.000000T0000Z-210710T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-Pinal AZ-
124 AM MST Sat Jul 10 2021

...FLASH FLOOD WARNING FOR THE TELEGRAPH AND SALT BURN SCAR WILL 
EXPIRE AT 130 AM MST EARLY THIS MORNING FOR GILA AND PINAL 
COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3339 11100 3353 11097 3356 11087 3351 11072
      3346 11071 3335 11071 3324 11068 3320 11066
      3319 11082 3325 11091 3327 11099 3331 11102

$$

Iniguez

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 5:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	6 hr
Jul 9, 5:36 PM MST	Special Weather Statement	PSR	Gila	24 min
Jul 9, 6:23 PM MST	Special Weather Statement	PSR		52 min
Jul 9, 7:45 PM MST	Special Weather Statement	PSR		30 min
Jul 9, 8:15 PM MST	Severe Thunderstorm Warning	PSR	Gila	45 min
Jul 9, 8:58 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa, Pinal	47 min
Jul 9, 9:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Jul 9, 9:18 PM MST	Special Weather Statement	PSR	Pinal	42 min
Jul 9, 9:39 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa, Pinal	36 min
Jul 9, 9:54 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	51 min
Jul 9, 10:06 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	39 min
Jul 9, 10:21 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	54 min
Jul 9, 10:30 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	45 min
Jul 9, 10:32 PM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	4 hr
Jul 9, 10:44 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	31 min
Jul 9, 10:52 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	3 hr
Jul 9, 11:12 PM MST	Dust Storm Advisory	PSR	Maricopa	63 min
Jul 9, 11:15 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	60 min
Jul 9, 11:19 PM MST	Severe Thunderstorm Warning	PSR	Pinal	26 min
Jul 9, 11:22 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	38 min
Jul 9, 11:31 PM MST	Dust Storm Advisory	PSR	Maricopa	44 min
Jul 9, 11:33 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	4 hr
Jul 10, 1:02 AM MST	Special Weather Statement	PSR	Yuma	28 min
Jul 10, 1:57 PM MST	Blowing Dust Advisory	PSR	Maricopa, Pinal	9 hr
Jul 10, 2:27 PM MST	Special Weather Statement	PSR	Gila	48 min
Jul 10, 3:15 PM MST	Special Weather Statement	PSR	Gila	45 min

Nearby

Flash Flood Warnings in Arizona, 2021 Every flash flood warning in 2021

Sources

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