Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 127, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Aug 8, 2021, 2:44 PM MST for Gila County, Arizona. It was in force for 118 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 8, 2021, 2:44 PM MST (21:44 UTC)
- Expired
- Aug 8, 2021, 4:42 PM MST
- In force
- 118 min
- 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), 82 km from the middle of the area, began a volume at 21:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 2:45 PM MST | HEAVY RAIN 0.67 | 6 S Globe, AZ | RAIN GAUGE IN SIX SHOOTER CANYON MEASURED 0.67 INCHES IN 1 HOUR. RAINFALL WAS SUFFICIENT TO CAUSE RUNOFF IN PINAL CREEK CAUSING NUISANCE FLOODING DOWNSTREAM AT THE BEER TREE CROSSING BY AROUND 4PM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 9.7 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.
- Mixed-layer CAPE
- 413 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 2138 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
860
WGUS55 KPSR 082144
FFWPSR
AZC007-090145-
/O.NEW.KPSR.FF.W.0127.210808T2144Z-210809T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
244 PM MST Sun Aug 8 2021
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for...
Gila County in east central Arizona...
* Until 645 PM MST.
* At 244 PM MST, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned 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 and automated gauges.
IMPACT...Life threatening flash flooding of creeks and streams,
streets and underpasses.
* Some locations that will experience flash flooding include...
Pinal Creek, Sixshooter Canyon, Icehouse Canyon, and Globe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3330 11086 3343 11081 3343 11080 3340 11077
3340 11076 3338 11074 3336 11074 3334 11074
3328 11077 3327 11078 3326 11079 3326 11080
3328 11085
FLASH FLOOD...RADAR AND GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
AJ2 follow-up statements
958
WGUS75 KPSR 082220
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
320 PM MST Sun Aug 8 2021
AZC007-090145-
/O.CON.KPSR.FF.W.0127.000000T0000Z-210809T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
320 PM MST Sun Aug 8 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MST THIS
EVENING FOR GILA COUNTY...
At 320 PM MST, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
0.5 and 1 inch of rain has fallen. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar and automated gauges.
IMPACT...Life threatening flash flooding of creeks and streams,
streets and underpasses.
Some locations that will experience flash flooding include...
Six Shooter Canyon, Pinal Creek, and Globe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3330 11086 3343 11081 3343 11080 3340 11077
3340 11076 3338 11074 3336 11074 3334 11074
3328 11077 3327 11078 3326 11079 3326 11080
3328 11085
FLASH FLOOD...RADAR AND GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
AJ934
WGUS75 KPSR 082342
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
442 PM MST Sun Aug 8 2021
AZC007-082352-
/O.CAN.KPSR.FF.W.0127.000000T0000Z-210809T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
442 PM MST Sun Aug 8 2021
...FLASH FLOOD WARNING IS CANCELLED FOR GILA COUNTY...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 3330 11086 3343 11081 3343 11080 3340 11077
3340 11076 3338 11074 3336 11074 3334 11074
3328 11077 3327 11078 3326 11079 3326 11080
3328 11085
$$
AJNearby
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.