Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 161, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Aug 10, 2021, 1:22 PM MST for Coconino County, Yavapai County, Arizona. It was in force for 53 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
- Aug 10, 2021, 1:22 PM MST (20:22 UTC)
- Expired
- Aug 10, 2021, 2:15 PM MST
- In force
- 53 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Coconino County, AZ, Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 91 km from the middle of the area, began a volume at 20:22 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.4 hours before the alert went out and 33 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
- 609 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
581
WGUS55 KFGZ 102022
FFWFGZ
AZC005-025-102115-
/O.NEW.KFGZ.FF.W.0161.210810T2022Z-210810T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
122 PM MST Tue Aug 10 2021
The National Weather Service in Flagstaff has issued a
* Flash Flood Warning for...
The Rafael Fire scar in...
Coconino County in north central Arizona...
Yavapai County in west central Arizona...
* Until 215 PM MST.
* At 121 PM MST, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain over the Rafael Fire scar.
Between 0.75 and 1.75 inches of rain have fallen. Additional
rainfall amounts of 0.5 to 1.5 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 Rafael Fire
scar.
SOURCE...Radar and automated gauges.
IMPACT...Life threatening flash flooding of areas in and around
the Rafael Fire scar.
* Some locations that will experience flash flooding include...
Perkinsville, White Horse Lake Campground and Raymond Boy Scout
Camp.
This includes the following swimming holes...
Sycamore Falls, Lower Sycamore Falls "The Golden Pond", Paradise
Forks and Parsons Spring along Sycamore Creek.
This includes the following streams and drainages...
Verde River, Volunteer Wash, Sycamore Creek, JD Dam Wash, Spring
Creek, Railroad Draw, Coffee Creek, Bear Canyon and Tule Tank Wash.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get to higher ground immediately! Flash flood waters and debris will
inundate recreation trails crossing washes within and downstream of
Sycamore Canyon and Creek, including Parsons and Dogie Trails.
&&
LAT...LON 3497 11221 3501 11216 3517 11207 3516 11205
3516 11199 3517 11188 3518 11186 3503 11196
3499 11191 3498 11193 3494 11199 3491 11202
3478 11204 3488 11216 3494 11225
FLASH FLOOD...RADAR AND GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Humphreys1 follow-up statement
389
WGUS75 KFGZ 102107
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
207 PM MST Tue Aug 10 2021
AZC005-025-102117-
/O.EXP.KFGZ.FF.W.0161.000000T0000Z-210810T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coconino AZ-Yavapai AZ-
207 PM MST Tue Aug 10 2021
...FLASH FLOOD WARNING FOR THE RAFAEL FIRE SCAR WILL EXPIRE AT 215
PM MST THIS AFTERNOON FOR COCONINO AND YAVAPAI COUNTIES...
Flood waters have receded and the heavy rain has ended. Flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
LAT...LON 3497 11221 3501 11216 3517 11207 3516 11205
3516 11199 3517 11188 3518 11186 3503 11196
3499 11191 3498 11193 3494 11199 3491 11202
3478 11204 3488 11216 3494 11225
$$
HumphreysThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 5:19 PM MST | Special Weather Statement | FGZ | 41 min | |
| Aug 9, 6:17 PM MST | Flash Flood Warning | FGZ | Yavapai | 3 hr |
| Aug 9, 6:56 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 34 min |
| Aug 9, 7:27 PM MST | Special Weather Statement | FGZ | 33 min | |
| Aug 9, 7:50 PM MST | Special Weather Statement | FGZ | Gila | 25 min |
| Aug 9, 8:44 PM MST | Special Weather Statement | FGZ | Gila | 46 min |
| Aug 9, 9:18 PM MST | Areal Flood Advisory | FGZ | Gila, Navajo | 3 hr |
| Aug 9, 9:32 PM MST | Special Weather Statement | FGZ | Gila | 43 min |
| Aug 10, 11:35 AM MST | Special Weather Statement | FGZ | 25 min | |
| Aug 10, 11:55 AM MST | Severe Thunderstorm Warning | FGZ | Coconino | 15 min |
| Aug 10, 12:02 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Aug 10, 12:14 PM MST | Special Weather Statement | FGZ | 31 min | |
| Aug 10, 12:46 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Aug 10, 12:59 PM MST | Flash Flood Warning | FGZ | Coconino, Yavapai | 3 hr |
| Aug 10, 2:22 PM MST | Special Weather Statement | FGZ | Yavapai | 23 min |
| Aug 10, 2:26 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 32 min |
| Aug 10, 2:35 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 40 min |
| Aug 10, 2:43 PM MST | Flash Flood Warning | FGZ | Yavapai | 3 hr |
| Aug 10, 2:52 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 38 min |
| Aug 10, 3:11 PM MST | Flash Flood Warning | FGZ | Coconino, Yavapai | 3 hr |
| Aug 10, 3:46 PM MST | Flash Flood Warning | FGZ | Yavapai | 3 hr |
| Aug 10, 4:13 PM MST | Flash Flood Warning | FGZ | Yavapai | 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.