Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 12, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 3, 2021, 5:32 PM MST for Gila County, Arizona. It was in force for 3 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 3, 2021, 5:32 PM MST (00:32 UTC)
- Expired
- Jul 3, 2021, 8:45 PM MST
- In force
- 3 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Gila County, AZ
The radar
The Flagstaff radar (KFSX), 71 km from the middle of the area, began a volume at 00:36 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, 0.5 hours before the alert went out and 81 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
- 281 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 3054 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
821
WGUS55 KFGZ 040032
FFWFGZ
AZC007-040345-
/O.NEW.KFGZ.FF.W.0012.210704T0032Z-210704T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
532 PM MST Sat Jul 3 2021
The National Weather Service in Flagstaff has issued a
* Flash Flood Warning for...
The Slate Creek basin in...
Gila County in east central Arizona...
* Until 845 PM MST.
* At 531 PM MST, Doppler radar indicated thunderstorms producing
heavy rain over the Slate Creek basin. Between 0.5 and 1.25 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 Slate Creek
basin.
SOURCE...Doppler radar.
IMPACT...Life-threatening flash flooding of areas in and around
the Slate Creek basin.
* Some locations that will experience flash flooding include...
mainly rural areas of Gila County
This includes the following highways...
State Route 188 near mile marker 268.
Additional rainfall amounts of 0.5 to 1 inch are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get to higher ground immediately! Residences near State Route 188
along the banks of Slate Creek may be affected by high water and
debris.
Turn Around, Don't Drown! National Forest Service Road 26 and low
water crossings through Slate Creek will be inundated or washed out.
&&
LAT...LON 3396 11139 3397 11137 3394 11130 3393 11133
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
TPS2 follow-up statements
585
WGUS75 KFGZ 040145
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
645 PM MST Sat Jul 3 2021
AZC007-040345-
/O.CON.KFGZ.FF.W.0012.000000T0000Z-210704T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-
645 PM MST Sat Jul 3 2021
...FLASH FLOOD WARNING FOR THE SLATE CREEK BASIN REMAINS IN EFFECT
UNTIL 845 PM MST THIS EVENING FOR GILA COUNTY...
At 644 PM MST, Doppler radar indicated thunderstorms have moved away
from the Slate Creek basin and heavy rain has ended. However, the
flash flood threat remains. Between 1 and 2 inches of rain have
fallen.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding in and around the Slate Creek basin.
SOURCE...Doppler radar.
IMPACT...Life-threatening flash flooding of areas in and around
the Slate Creek basin.
Some locations that will experience flash flooding include...
mainly rural areas of Gila County
This includes the following highways...
State Route 188 near mile marker 268.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get to higher ground immediately! Residences near State Route 188
along the banks of Slate Creek may be affected by high water and
debris.
Turn Around, Don't Drown! National Forest Service Road 26 and low
water crossings through Slate Creek will be inundated or washed out.
&&
LAT...LON 3396 11139 3397 11137 3394 11130 3393 11133
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
TPS103 WGUS75 KFGZ 040338 FFSFGZ Flash Flood Statement National Weather Service Flagstaff AZ 838 PM MST Sat Jul 3 2021 AZC007-040348- /O.EXP.KFGZ.FF.W.0012.000000T0000Z-210704T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Gila AZ- 838 PM MST Sat Jul 3 2021 ...FLASH FLOOD WARNING FOR THE SLATE CREEK BASIN WILL EXPIRE AT 845 PM MST THIS EVENING FOR GILA COUNTY... The heavy rain has ended and flood waters have receded along Slate Creek. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. LAT...LON 3396 11139 3397 11137 3394 11130 3393 11133 $$ TPS
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 5:38 PM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Jul 4, 3:30 PM MST | Areal Flood Advisory | FGZ | Navajo | 3 hr |
| Jul 4, 4:19 PM MST | Areal Flood Advisory | FGZ | Gila, Navajo | 3 hr |
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.