Alert archive / Arizona / Flash Flood Warnings in 2021

Flash Flood Warning 24, NWS Phoenix, AZ

July 9, 2021Gila County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 9, 2021, 5:36 PM MST for Gila County, Arizona. It was in force for 6 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 9, 2021, 5:36 PM MST (00:36 UTC)
Expired: Jul 9, 2021, 11:39 PM MST
In force: 6 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), 98 km from the middle of the area, began a volume at 00:38 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, 0.6 hours before the alert went out and 124 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.

949 
WGUS55 KPSR 100036
FFWPSR
AZC007-100445-
/O.NEW.KPSR.FF.W.0024.210710T0036Z-210710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Phoenix has issued a

* Flash Flood Warning for...
  The Griffin burn scar in...
  Gila County in east central Arizona...

* Until 945 PM MST.

* At 536 PM MST, Doppler radar indicated thunderstorms produced 
  heavy rain over the Griffin Burn Scar. Up to 1.50 inches of rain 
  has fallen. Flash flooding is ongoing or expected to begin shortly.

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

  SOURCE...Radar.

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

* Some locations that will experience flash flooding include...
  mainly rural areas of Gila County

This includes the following highways...
	US Highway 60 between mile markers 261 and 262.

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 Griffin 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 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

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

$$

Rogers

6 follow-up statements

313 
WGUS75 KPSR 100120
FFSPSR

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

AZC007-100445-
/O.CON.KPSR.FF.W.0024.000000T0000Z-210710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
620 PM MST Fri Jul 9 2021

...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR REMAINS IN EFFECT 
UNTIL 945 PM MST THIS EVENING FOR GILA COUNTY...

At 620 PM MST, Doppler radar indicated thunderstorms produced heavy 
rain over the Griffin Burn Scar. Between 0.75 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 in and around the Griffin Burn Scar.

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  mainly rural areas of Gila County

This includes the following highways...
	US Highway 60 between mile markers 261 and 262.

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 Griffin 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 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

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

$$

Rogers

234 
WGUS75 KPSR 100231
FFSPSR

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

AZC007-100445-
/O.CON.KPSR.FF.W.0024.000000T0000Z-210710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
731 PM MST Fri Jul 9 2021

...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR REMAINS IN EFFECT 
UNTIL 945 PM MST THIS EVENING FOR GILA COUNTY...

At 731 PM MST, Doppler radar indicated thunderstorms produced heavy 
rain over the Griffin Burn Scar. Between 0.75 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 in and around the Griffin Burn Scar.

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  mainly rural areas of Gila County

This includes the following highways...
	US Highway 60 between mile markers 261 and 262.

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 Griffin 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 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

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

$$

Rogers

110 
WGUS75 KPSR 100342
FFSPSR

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

AZC007-100445-
/O.CON.KPSR.FF.W.0024.000000T0000Z-210710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
842 PM MST Fri Jul 9 2021

...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR REMAINS IN EFFECT 
UNTIL 945 PM MST THIS EVENING FOR GILA COUNTY...

At 842 PM MST, Doppler radar indicated thunderstorms producing heavy 
rain over the Griffin Burn Scar. Between 0.75 and 1.5 inches of rain 
have fallen. Additional rainfall amounts up to 0.5 inches are 
possible in the warned area. Flash flooding is ongoing or expected 
to begin shortly.

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

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  mainly rural areas of Gila County

This includes the following highways...
	US Highway 60 between mile markers 261 and 262.

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 Griffin 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 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

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

$$

Rogers

248 
WGUS55 KPSR 100433
FFWPSR
AZC007-100645-
/O.EXT.KPSR.FF.W.0024.000000T0000Z-210710T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Phoenix has extended the

* Flash Flood Warning for...
  The Griffin burn scar in...
  Gila County in east central Arizona...

* Until 1145 PM MST.

* At 933 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain over the Griffin Burn Scar. Between 1 and 1.5 inches of 
  rain have fallen. Additional rainfall amounts up to 0.5 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

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

  SOURCE...Radar.

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

* Some locations that will experience flash flooding include...
  mainly rural areas of Gila County

This includes the following highways...
	US Highway 60 between mile markers 261 and 262.

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 Griffin 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 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

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

$$

SDB

940 
WGUS75 KPSR 100535
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
1035 PM MST Fri Jul 9 2021

AZC007-100645-
/O.CON.KPSR.FF.W.0024.000000T0000Z-210710T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
1035 PM MST Fri Jul 9 2021

...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR REMAINS IN EFFECT 
UNTIL 1145 PM MST THIS EVENING FOR GILA COUNTY...

At 1035 PM MST, Doppler radar indicated thunderstorms producing 
heavy rain over the Griffin Burn Scar. Between 1 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 in and around the Griffin Burn Scar.

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  mainly rural areas of Gila County

This includes the following highways...
	US Highway 60 between mile markers 261 and 262.

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 Griffin 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 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

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

$$

Rogers

594 
WGUS75 KPSR 100639
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
1139 PM MST Fri Jul 9 2021

AZC007-100649-
/O.CAN.KPSR.FF.W.0024.000000T0000Z-210710T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
1139 PM MST Fri Jul 9 2021

...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR FOR GILA COUNTY HAS 
ENDED...

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

LAT...LON 3346 11066 3347 11071 3351 11072 3353 11069
      3353 11064 3349 11060 3347 11056 3343 11055
      3343 11060

$$

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	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, 9:32 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Pinal	4 hr
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.