Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 125, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Aug 1, 2021, 5:47 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 1, 2021, 5:47 PM MST (00:47 UTC)
- Expired
- Aug 1, 2021, 9:45 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 nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 0.8 hours before the alert went out and 141 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
- 748 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 2842 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
127
WGUS55 KPSR 020047
FFWPSR
AZC007-020445-
/O.NEW.KPSR.FF.W.0125.210802T0047Z-210802T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
547 PM MST Sun Aug 1 2021
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for...
Gila County in east central Arizona...
* Until 945 PM MST.
* At 547 PM MST, Doppler radar indicated thunderstorms producing
heavy rain in Sevenmile Wash and Sycamore creek. Between 1 and 1.5
inches of rain have fallen. Additional rainfall amounts of 1 to 2
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.
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...
mainly rural areas of Gila County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3337 11045 3340 11049 3341 11053 3347 11052
3354 11048 3351 11044 3343 11040 3340 11039
3340 11041 3339 11042 3339 11043 3338 11044
3337 11044
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SDB2 follow-up statements
803
WGUS75 KPSR 020127
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
627 PM MST Sun Aug 1 2021
AZC007-020445-
/O.CON.KPSR.FF.W.0125.000000T0000Z-210802T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
627 PM MST Sun Aug 1 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM MST THIS
EVENING FOR GILA COUNTY...
At 627 PM MST, Doppler radar indicated thunderstorms producing heavy
rain in Sevenmile Wash and Sycamore Creek. Between 2 and 2.5 inches
of rain have fallen. Additional rainfall amounts of 0.25 to 1 inch
are possible in the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
mainly rural areas of Gila County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3337 11045 3340 11049 3341 11053 3347 11052
3354 11048 3351 11044 3343 11040 3340 11039
3340 11041 3339 11042 3339 11043 3338 11044
3337 11044
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SDB723
WGUS75 KPSR 020449
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
949 PM MST Sun Aug 1 2021
AZC007-020459-
/O.EXP.KPSR.FF.W.0125.000000T0000Z-210802T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
949 PM MST Sun Aug 1 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR GILA COUNTY...
Flood waters have receded. The heavy rain has ended and flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
LAT...LON 3337 11045 3340 11049 3341 11053 3347 11052
3354 11048 3351 11044 3343 11040 3340 11039
3340 11041 3339 11042 3339 11043 3338 11044
3337 11044
$$
HirschThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:25 PM MST | Special Weather Statement | PSR | 35 min | |
| Aug 1, 7:26 PM MST | Flash Flood Warning | PSR | Gila | 2 hr |
| Aug 2, 6:46 AM MST | Areal Flood Warning | PSR | Gila | 12 hr |
| Aug 2, 1:45 PM MST | Excessive Heat Warning | PSR | La Paz, Maricopa, Pinal, Yuma | 3 days |
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.