Alert archive / Arizona / Flash Flood Warnings in 2021

Flash Flood Warning 11, NWS Phoenix, AZ

July 2, 2021Gila County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 2, 2021, 5:10 PM MST for Gila County, Arizona. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 2, 2021, 5:10 PM MST (00:10 UTC)
Expired: Jul 2, 2021, 9:15 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), 81 km from the middle of the area, began a volume at 00:10 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 00:00Z, 0.2 hours before the alert went out and 110 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: 347 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 2932 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

564 
WGUS55 KPSR 030010
FFWPSR
AZC007-030415-
/O.NEW.KPSR.FF.W.0011.210703T0010Z-210703T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
510 PM MST Fri Jul 2 2021

The National Weather Service in Phoenix has issued a

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

* Until 915 PM MST.

* At 510 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the Telegraph Fire burn area. Between 0.5 and 1 
  inch of rain has 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 and Claypool.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3338 11070 3329 11068 3318 11071 3312 11077
      3314 11086 3325 11091 3333 11091 3337 11087
      3345 11084

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

$$

MS

2 follow-up statements

217 
WGUS75 KPSR 030120
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
620 PM MST Fri Jul 2 2021

AZC007-030415-
/O.CON.KPSR.FF.W.0011.000000T0000Z-210703T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
620 PM MST Fri Jul 2 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM MST THIS 
EVENING FOR GILA COUNTY...

At 620 PM MST, Doppler radar indicated thunderstorms producing heavy 
rain across the Telegraph Fire burn area. Between 0.5 and 1 inch of 
rain has 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 and Claypool.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3338 11070 3329 11068 3318 11071 3312 11077
      3314 11086 3325 11091 3333 11091 3337 11087
      3345 11084

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

$$

Rogers

435 
WGUS75 KPSR 030417
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
917 PM MST Fri Jul 2 2021

AZC007-030427-
/O.EXP.KPSR.FF.W.0011.000000T0000Z-210703T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
917 PM MST Fri Jul 2 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR GILA COUNTY...

The heavy rain has ended across the Telegraph Fire burn area. 
Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

LAT...LON 3338 11070 3329 11068 3318 11071 3312 11077
      3314 11086 3325 11091 3333 11091 3337 11087
      3345 11084

$$

Rogers

The office that day

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

Issued	Product	Office	Counties	Lasted
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
Jul 3, 4:57 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.