Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 166, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Aug 13, 2021, 4:12 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
- Aug 13, 2021, 4:12 PM MST (23:12 UTC)
- Expired
- Aug 13, 2021, 8:15 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), 102 km from the middle of the area, began a volume at 23:11 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 12:00Z, 11.2 hours before the alert went out and 128 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.
- Mixed-layer CAPE
- 1066 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1319 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
803
WGUS55 KPSR 132312
FFWPSR
AZC007-140315-
/O.NEW.KPSR.FF.W.0166.210813T2312Z-210814T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
412 PM MST Fri Aug 13 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 815 PM MST.
* At 412 PM MST, Doppler radar indicated thunderstorms producing
heavy rain over the Griffin 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 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
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3349 11053 3348 11055 3347 11055 3345 11057
3342 11059 3340 11062 3339 11063 3341 11065
3343 11067 3349 11067 3355 11064 3358 11058
3356 11056 3353 11053
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MS3 follow-up statements
886
WGUS75 KPSR 132353
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
453 PM MST Fri Aug 13 2021
AZC007-140315-
/O.CON.KPSR.FF.W.0166.000000T0000Z-210814T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
453 PM MST Fri Aug 13 2021
...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR REMAINS IN EFFECT
UNTIL 815 PM MST THIS EVENING FOR GILA COUNTY...
At 453 PM MST, Doppler radar indicated thunderstorms producing heavy
rain over the Griffin Burn Scar. Between 1 and 2 inches of rain have
fallen over the eastern half of the burn scar. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding in and around the Griffin Burn Scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Griffin Burn Scar.
Some locations that will experience flash flooding include...
mainly rural areas of Gila County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3349 11053 3348 11055 3347 11055 3345 11057
3342 11059 3340 11062 3339 11063 3341 11065
3343 11067 3349 11067 3355 11064 3358 11058
3356 11056 3353 11053
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MS467
WGUS75 KPSR 140130
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
630 PM MST Fri Aug 13 2021
AZC007-140315-
/O.CON.KPSR.FF.W.0166.000000T0000Z-210814T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
630 PM MST Fri Aug 13 2021
...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR REMAINS IN EFFECT
UNTIL 815 PM MST THIS EVENING FOR GILA COUNTY...
At 630 PM MST, Doppler radar indicated thunderstorms produced heavy
rain over the Griffin 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 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
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3349 11053 3348 11055 3347 11055 3345 11057
3342 11059 3340 11062 3339 11063 3341 11065
3343 11067 3349 11067 3355 11064 3358 11058
3356 11056 3353 11053
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Rogers820
WGUS75 KPSR 140311
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
811 PM MST Fri Aug 13 2021
AZC007-140321-
/O.EXP.KPSR.FF.W.0166.000000T0000Z-210814T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
811 PM MST Fri Aug 13 2021
...FLASH FLOOD WARNING FOR THE GRIFFIN BURN SCAR WILL EXPIRE AT 815
PM MST THIS EVENING FOR GILA COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 500 PM MST Sunday for a
portion of south central Arizona.
LAT...LON 3349 11053 3348 11055 3347 11055 3345 11057
3342 11059 3340 11062 3339 11063 3341 11065
3343 11067 3349 11067 3355 11064 3358 11058
3356 11056 3353 11053
$$
RogersThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 5:16 PM MST | Special Weather Statement | PSR | Yuma | 44 min |
| Aug 12, 5:17 PM MST | Special Weather Statement | PSR | Yuma | 43 min |
| Aug 12, 5:53 PM MST | Areal Flood Advisory | PSR | Yuma | 3 hr |
| Aug 12, 6:28 PM MST | Special Weather Statement | PSR | La Paz | 47 min |
| Aug 12, 6:30 PM MST | Special Weather Statement | PSR | Yuma | 45 min |
| Aug 12, 6:42 PM MST | Areal Flood Advisory | PSR | La Paz | 3 hr |
| Aug 12, 6:47 PM MST | Areal Flood Advisory | PSR | Maricopa, Yuma | 3 hr |
| Aug 12, 6:50 PM MST | Severe Thunderstorm Warning | PSR | Yuma | 40 min |
| Aug 12, 6:52 PM MST | Severe Thunderstorm Warning | PSR | La Paz | 38 min |
| Aug 12, 7:16 PM MST | Flash Flood Warning | PSR | Yuma | 4 hr |
| Aug 12, 7:25 PM MST | Severe Thunderstorm Warning | PSR | La Paz | 50 min |
| Aug 12, 7:42 PM MST | Areal Flood Advisory | PSR | La Paz, Yuma | 3 hr |
| Aug 12, 7:56 PM MST | Special Weather Statement | PSR | La Paz | 49 min |
| Aug 12, 8:05 PM MST | Dust Storm Advisory | PSR | La Paz, Yuma | 55 min |
| Aug 12, 8:48 PM MST | Flash Flood Warning | PSR | La Paz, Yuma | 4 hr |
| Aug 13, 2:50 PM MST | Special Weather Statement | PSR | Gila | 40 min |
| Aug 13, 3:30 PM MST | Severe Thunderstorm Warning | PSR | Gila | 45 min |
| Aug 13, 3:36 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Aug 13, 4:14 PM MST | Special Weather Statement | PSR | Gila | 46 min |
| Aug 13, 4:34 PM MST | Severe Thunderstorm Warning | PSR | Gila, Maricopa, Pinal | 41 min |
Nearby
Flash Flood Warnings in Arizona, 2021Every 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.