Alert archive / Arizona / Flash Flood Warnings in 2021

Flash Flood Warning 12, NWS Phoenix, AZ

July 3, 2021Gila County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 3, 2021, 4:57 PM MST for Gila County, Arizona. It was in force for 4 hr. 3 reports 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 3, 2021, 4:57 PM MST (23:57 UTC)
Expired: Jul 3, 2021, 9:00 PM MST
In force: 4 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Gila County, AZ

The radar

The Phoenix radar (KIWA), 86 km from the middle of the area, began a volume at 23:58 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 3, 5:00 PM MST	FLASH FLOOD	2 Se Globe, AZ	DELAYED REPORT SIGNIFICANT AMOUNT OF FLOWING WATER THROUGH PINAL CREEK NEAR SIX SHOOTER CANYON.
Jul 3, 6:00 PM MST	FLASH FLOOD	1 E Claypool, AZ	EM REPORTED 4-5 FT RISE ON RUSSELL GULCH FROM FLOW OFF TELEGRAPH FIRE. TIME OF MAX FLOW ESTIMATED.
Jul 3, 7:30 PM MST	FLOOD	Globe, AZ	WATER STARTING TO COME OUT OF BANKS OF THE CREEK BUT ROADS ARE STILL PASSABLE.

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 12:00Z, 12.0 hours before the alert went out and 113 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: 73 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 2075 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

374 
WGUS55 KPSR 032357
FFWPSR
AZC007-040400-
/O.NEW.KPSR.FF.W.0012.210703T2357Z-210704T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
457 PM MST Sat Jul 3 2021

The National Weather Service in Phoenix has issued a

* Flash Flood Warning for...
  Gila County in east central Arizona...

* Until 900 PM MST.

* At 457 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area which includes the Telegraph 
  Fire burn area and the cities of Globe and Claypool. Between 0.5 
  and 1.5 inches of rain have fallen. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Globe, Miami, Central Heights-Midland City, Claypool, Cutter and 
  Inspiration.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3322 11065 3317 11076 3331 11086 3335 11095
      3340 11094 3349 11088 3357 11075 3354 11067
      3337 11066 3335 11064 3334 11063

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

$$

MS

3 follow-up statements

099 
WGUS75 KPSR 040156
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
656 PM MST Sat Jul 3 2021

AZC007-040400-
/O.CON.KPSR.FF.W.0012.000000T0000Z-210704T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
656 PM MST Sat Jul 3 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM MST THIS EVENING 
FOR GILA COUNTY...

At 656 PM MST, local law enforcement reported flowing creeks in the 
greater Globe area.  Low water crossings have been impacted along 
Russel Gulch and Pinal Creek.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3322 11065 3317 11076 3331 11086 3335 11095
      3340 11094 3349 11088 3357 11075 3354 11067
      3337 11066 3335 11064 3334 11063

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

MS

673 
WGUS75 KPSR 040246
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
746 PM MST Sat Jul 3 2021

AZC007-040400-
/O.CON.KPSR.FF.W.0012.000000T0000Z-210704T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
746 PM MST Sat Jul 3 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM MST THIS EVENING 
FOR GILA COUNTY...

At 746 PM MST, Trained weather spotters reported portions of Pinal 
Creek in Globe at top of banks and some water spilling over.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Trained spotters reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3322 11065 3317 11076 3331 11086 3335 11095
      3340 11094 3349 11088 3357 11075 3354 11067
      3337 11066 3335 11064 3334 11063

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

MS

154 
WGUS75 KPSR 040356
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
856 PM MST Sat Jul 3 2021

AZC007-040406-
/O.EXP.KPSR.FF.W.0012.000000T0000Z-210704T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
856 PM MST Sat Jul 3 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 9 PM MST THIS EVENING FOR GILA 
COUNTY...

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

LAT...LON 3322 11065 3317 11076 3331 11086 3335 11095
      3340 11094 3349 11088 3357 11075 3354 11067
      3337 11066 3335 11064 3334 11063

$$

SDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 5:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Jul 2, 5:12 PM MST	Special Weather Statement	PSR	Pinal	48 min
Jul 2, 7:12 PM MST	Special Weather Statement	PSR		33 min
Jul 2, 7:52 PM MST	Areal Flood Advisory	PSR	Maricopa	98 min
Jul 3, 3:25 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	41 min
Jul 3, 4:46 PM MST	Special Weather Statement	PSR		44 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.