Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 27, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 14, 2021, 2:57 PM MST for Yavapai 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 14, 2021, 2:57 PM MST (21:57 UTC)
- Expired
- Jul 14, 2021, 6:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 22:00 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, 10.0 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
- 17 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 1682 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
405
WGUS55 KFGZ 142157
FFWFGZ
AZC025-150100-
/O.NEW.KFGZ.FF.W.0027.210714T2157Z-210715T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
257 PM MST Wed Jul 14 2021
The National Weather Service in Flagstaff has issued a
* Flash Flood Warning for...
Yavapai County in west central Arizona...
* Until 600 PM MST.
* At 254 PM MST, Doppler radar indicated thunderstorms producing
heavy rain from near Seligman across the Partridge Creek and Big
Chino Wash drainages south of Interstate 40. Between 1 and 2
inches of rain have fallen. Additional rainfall amounts of 0.5 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 low-water
crossings, creeks, normally dry washes and roads.
* Some locations that will experience flash flooding include...
Seligman and Big Chino Wash at Paulden.
This includes the following highways...
Business Interstate 40 between mile markers 140 and 141.
State Route 89 between mile markers 336 and 338...and
between mile markers 361 and 363.
Route 66 between mile markers 135 and 139.
Interstate 40 between mile markers 115 and 144.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly or mountainous terrain, there are many low water crossings
which will become dangerous in heavy rain. Do not attempt to cross
flooded roads. Find an alternate route.
&&
LAT...LON 3537 11301 3521 11246 3519 11246 3488 11246
3485 11247 3513 11296
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JJ1 follow-up statement
126
WGUS75 KFGZ 150051
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
551 PM MST Wed Jul 14 2021
AZC025-150101-
/O.EXP.KFGZ.FF.W.0027.000000T0000Z-210715T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yavapai AZ-
551 PM MST Wed Jul 14 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 6 PM MST THIS EVENING FOR
YAVAPAI COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat at this time. Please continue to heed remaining road
closures. Additional rainfall is possible tonight so be sure to
monitor for weather updates.
LAT...LON 3537 11301 3521 11246 3519 11246 3488 11246
3485 11247 3513 11296
$$
MCTThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 5:20 PM MST | Flash Flood Warning | FGZ | Gila, Yavapai | 3 hr |
| Jul 13, 7:23 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Jul 14, 2:39 AM MST | Special Weather Statement | FGZ | Yavapai | 36 min |
| Jul 14, 3:06 AM MST | Areal Flood Advisory | FGZ | Yavapai | 111 min |
| Jul 14, 3:24 AM MST | Special Weather Statement | FGZ | Yavapai | 36 min |
| Jul 14, 3:38 AM MST | Areal Flood Advisory | FGZ | Yavapai | 2 hr |
| Jul 14, 3:59 AM MST | Special Weather Statement | FGZ | Yavapai | 46 min |
| Jul 14, 4:24 AM MST | Areal Flood Advisory | FGZ | Yavapai | 74 min |
| Jul 14, 4:30 AM MST | Special Weather Statement | FGZ | 45 min | |
| Jul 14, 4:45 AM MST | Special Weather Statement | FGZ | 45 min | |
| Jul 14, 5:23 AM MST | Special Weather Statement | FGZ | 37 min | |
| Jul 14, 9:53 AM MST | Flash Flood Watch | FGZ | Apache, Coconino, Navajo | 17 hr |
| Jul 14, 1:47 PM MST | Flash Flood Warning | FGZ | Coconino | 5 hr |
| Jul 14, 2:13 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Jul 14, 2:39 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Jul 14, 3:36 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Jul 14, 4:02 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 31 min |
| Jul 14, 4:24 PM MST | Flash Flood Warning | FGZ | Yavapai | 111 min |
| Jul 14, 4:54 PM MST | Flash Flood Warning | FGZ | Navajo | 111 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.