Alert archive / Arizona / Flash Flood Warnings in 2021

Flash Flood Warning 255, NWS Phoenix, AZ

December 24, 2021Gila County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Dec 24, 2021, 1:50 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: Dec 24, 2021, 1:50 PM MST (20:50 UTC)
Expired: Dec 24, 2021, 5:45 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), 75 km from the middle of the area, began a volume at 20:49 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

Tuscon, AZ (KTUS), launched 12:00Z, 8.8 hours before the alert went out and 131 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1616 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 265 m²/s²
0-3 km storm-relative helicity: 353 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

633 
WGUS55 KPSR 242050
FFWPSR
AZC007-250045-
/O.NEW.KPSR.FF.W.0255.211224T2050Z-211225T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
150 PM MST Fri Dec 24 2021

The National Weather Service in Phoenix has issued a

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

* Until 545 PM MST.

* At 150 PM MST, Doppler radar and automated rain gauges indicated 
  heavy rainfall over the Telegraph Burn Scar. Cameras showed 
  rapidly rising flow in Bloody Tanks, Russell Gulch, and Six 
  Shooter. Flash flooding is ongoing or expected to begin shortly.

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

  SOURCE...Radar and automated gauges.

  IMPACT...Life threatening flash flooding of areas in and around
           the Telegraph 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 219.
	US Highway 60 between mile markers 237 and 244...and
	near mile marker 245.
	AZ Route 77 between mile markers 160 and 169.

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 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 3329 11096 3334 11098 3344 11102 3347 11084
      3340 11072 3336 11071 3322 11078

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

$$

INS

2 follow-up statements

817 
WGUS75 KPSR 242156
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
256 PM MST Fri Dec 24 2021

AZC007-250045-
/O.CON.KPSR.FF.W.0255.000000T0000Z-211225T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
256 PM MST Fri Dec 24 2021

...FLASH FLOOD WARNING FOR THE TELEGRAPH BURN SCAR REMAINS IN EFFECT 
UNTIL 545 PM MST THIS AFTERNOON FOR GILA COUNTY...

At 256 PM MST, Doppler radar and automated rain gauges indicated 
heavy rainfall over the Telegraph Burn Scar. Cameras showed rapidly 
rising flow in Bloody Tanks, Russell Gulch, and Six Shooter. Between 
1 and 2 inches of rain have fallen today. Flash flooding is ongoing 
or expected to begin shortly.

HAZARD...Life threatening flash flooding. Heavy rain producing
         flash flooding in and around the Telegraph Burn Scar.

SOURCE...Radar and automated gauges.

IMPACT...Life threatening flash flooding of areas in and around
         the Telegraph 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 219.
	US Highway 60 between mile markers 237 and 244...and
	near mile marker 245.
	AZ Route 77 between mile markers 160 and 169.

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 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 3329 11096 3334 11098 3344 11102 3347 11084
      3340 11072 3336 11071 3322 11078

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

$$

INS

150 
WGUS75 KPSR 250045
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
545 PM MST Fri Dec 24 2021

AZC007-250055-
/O.EXP.KPSR.FF.W.0255.000000T0000Z-211225T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
545 PM MST Fri Dec 24 2021

...FLASH FLOOD WARNING FOR THE TELEGRAPH BURN SCAR HAS EXPIRED FOR 
GILA COUNTY...

Flood waters have receded. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3329 11096 3334 11098 3344 11102 3347 11084
      3340 11072 3336 11071 3322 11078

$$

INS

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 24, 11:28 AM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	3 hr
Dec 24, 1:41 PM MST	Areal Flood Warning	PSR	Gila	13 days
Dec 24, 4:19 PM MST	Areal Flood Advisory	PSR	Maricopa	116 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.