Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 72, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 21, 2021, 2:36 PM MST for Yavapai County, Arizona. It was in force for 54 min. 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 21, 2021, 2:36 PM MST (21:36 UTC)
- Expired
- Jul 21, 2021, 3:30 PM MST
- In force
- 54 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Yavapai County, AZ
The radar
The Phoenix radar (KIWA), 143 km from the middle of the area, began a volume at 21:38 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, 9.6 hours before the alert went out and 113 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
- 5 J/kg
- Mixed-layer CIN
- -244 J/kg
- Mixed-layer LCL
- 2438 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
446
WGUS55 KFGZ 212136
FFWFGZ
AZC025-212230-
/O.NEW.KFGZ.FF.W.0072.210721T2136Z-210721T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
236 PM MST Wed Jul 21 2021
The National Weather Service in Flagstaff has issued a
* Flash Flood Warning for...
The Tenderfoot Fire scar in...
Yavapai County in west central Arizona...
* Until 330 PM MST.
* At 236 PM MST, Doppler radar indicated thunderstorms producing
heavy rain over the Tenderfoot Fire scar. Between 0.5 and 1 inch
of rain has fallen. Additional rainfall amounts of 0.25 to 0.75
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 in and around the Tenderfoot
Fire scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Tenderfoot Fire scar.
* Some locations that will experience flash flooding include...
Yarnell and Glen Ilah.
This includes the following highways...
State Route 89 between mile markers 277 and 278.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall over the Tenderfoot Fire scar will flood
neighborhoods next to the scar and highway 89A south of Yarnell.
&&
LAT...LON 3421 11276 3422 11276 3423 11274 3423 11272
3421 11274 3421 11275
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
EL2 follow-up statements
134
WGUS75 KFGZ 212207
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
307 PM MST Wed Jul 21 2021
AZC025-212230-
/O.CON.KFGZ.FF.W.0072.000000T0000Z-210721T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yavapai AZ-
307 PM MST Wed Jul 21 2021
...FLASH FLOOD WARNING FOR THE TENDERFOOT FIRE SCAR REMAINS IN
EFFECT UNTIL 330 PM MST THIS AFTERNOON FOR YAVAPAI COUNTY...
At 306 PM MST, Doppler radar indicated decreasing rainfall rates
over the Tenderfoot Fire scar, however flooding is likely as water
drains. Between 0.5 and 1 inch of rain has fallen.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding in and around the Tenderfoot Fire scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Tenderfoot Fire scar.
Some locations that will experience flash flooding include...
Yarnell and Glen Ilah.
This includes the following highways...
State Route 89 near mile marker 277.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall over the Tenderfoot Fire scar will flood
neighborhoods next to the scar and highway 89A south of Yarnell.
&&
LAT...LON 3421 11276 3422 11276 3423 11274 3423 11272
3421 11274 3421 11275
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
EL332
WGUS75 KFGZ 212223
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
323 PM MST Wed Jul 21 2021
AZC025-212233-
/O.EXP.KFGZ.FF.W.0072.000000T0000Z-210721T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yavapai AZ-
323 PM MST Wed Jul 21 2021
...FLASH FLOOD WARNING FOR THE TENDERFOOT FIRE SCAR WILL EXPIRE AT
330 PM MST THIS AFTERNOON FOR YAVAPAI 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 3421 11276 3422 11276 3423 11274 3423 11272
3421 11274 3421 11275
$$
ELThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:16 PM MST | Special Weather Statement | FGZ | 29 min | |
| Jul 20, 7:32 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 28 min |
| Jul 20, 7:55 PM MST | Flash Flood Warning | FGZ | Navajo | 2 hr |
| Jul 20, 8:33 PM MST | Flash Flood Warning | FGZ | Navajo | 117 min |
| Jul 21, 12:17 AM MST | Flash Flood Warning | FGZ | Gila | 118 min |
| Jul 21, 2:38 AM MST | Flash Flood Watch | FGZ | Apache, Coconino, Gila, Navajo, Yavapai | 5 days |
| Jul 21, 10:19 AM MST | Special Weather Statement | FGZ | Yavapai | 26 min |
| Jul 21, 10:48 AM MST | Flash Flood Warning | FGZ | Yavapai | 2 hr |
| Jul 21, 12:03 PM MST | Special Weather Statement | FGZ | Yavapai | 42 min |
| Jul 21, 12:13 PM MST | Flash Flood Warning | FGZ | Yavapai | 56 min |
| Jul 21, 12:20 PM MST | Flash Flood Warning | FGZ | Yavapai | 114 min |
| Jul 21, 12:35 PM MST | Special Weather Statement | FGZ | 40 min | |
| Jul 21, 12:47 PM MST | Flash Flood Warning | FGZ | Coconino | 118 min |
| Jul 21, 12:54 PM MST | Special Weather Statement | FGZ | 36 min | |
| Jul 21, 1:06 PM MST | Flash Flood Warning | FGZ | Coconino | 92 min |
| Jul 21, 1:24 PM MST | Flash Flood Warning | FGZ | Coconino | 110 min |
| Jul 21, 1:27 PM MST | Flash Flood Warning | FGZ | Yavapai | 74 min |
| Jul 21, 1:57 PM MST | Special Weather Statement | FGZ | Yavapai | 48 min |
| Jul 21, 2:01 PM MST | Areal Flood Advisory | FGZ | Yavapai | 119 min |
| Jul 21, 2:05 PM MST | Flash Flood Warning | FGZ | Coconino | 2 hr |
| Jul 21, 2:22 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Jul 21, 2:30 PM MST | Special Weather Statement | FGZ | 45 min | |
| Jul 21, 2:53 PM MST | Flash Flood Warning | FGZ | Coconino | 82 min |
| Jul 21, 2:57 PM MST | Flash Flood Warning | FGZ | Yavapai | 60 min |
| Jul 21, 2:59 PM MST | Flash Flood Warning | FGZ | Yavapai | 60 min |
| Jul 21, 3:21 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 26 min |
| Jul 21, 3:34 PM MST | Flash Flood Warning | FGZ | Coconino | 98 min |
| Jul 21, 3:49 PM MST | Flash Flood Warning | FGZ | Yavapai | 3 hr |
| Jul 21, 4:35 PM MST | Flash Flood Warning | FGZ | Coconino | 115 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.