Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 72, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 23, 2021, 2:25 PM MST for Maricopa County, Arizona. It was in force for 4 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 23, 2021, 2:25 PM MST (21:25 UTC)
- Expired
- Jul 23, 2021, 6:30 PM MST
- In force
- 4 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 74 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 142 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
- 503 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 915 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
295
WGUS55 KPSR 232125
FFWPSR
AZC013-240130-
/O.NEW.KPSR.FF.W.0072.210723T2125Z-210724T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
225 PM MST Fri Jul 23 2021
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for...
The Sears Fire burn scar in...
Maricopa County in south central Arizona...
* Until 630 PM MST.
* At 225 PM MST, Doppler radar indicated thunderstorms producing
heavy rain over the Sears Fire Burn Scar. Between 0.5 and 1.5
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 Sears Fire
Burn Scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Sears Fire Burn Scar.
* Some locations that will experience flash flooding include...
mainly rural areas of Maricopa County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3400 11158 3390 11162 3387 11175 3386 11181
3401 11182 3400 11171 3400 11162
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MS2 follow-up statements
841
WGUS75 KPSR 232352
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
452 PM MST Fri Jul 23 2021
AZC013-240130-
/O.CON.KPSR.FF.W.0072.000000T0000Z-210724T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-
452 PM MST Fri Jul 23 2021
...FLASH FLOOD WARNING FOR THE SEARS FIRE BURN SCAR REMAINS IN
EFFECT UNTIL 630 PM MST THIS EVENING FOR MARICOPA COUNTY...
At 452 PM MST, Doppler radar indicated thunderstorms producing heavy
rain over the Sears Fire Burn Scar. Between 0.5 and 1.5 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding in and around the Sears Fire Burn Scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Sears Fire Burn Scar.
Some locations that will experience flash flooding include...
mainly rural areas of Maricopa County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3400 11158 3390 11162 3387 11175 3386 11181
3401 11182 3400 11171 3400 11162
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
AD335
WGUS75 KPSR 240126
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
626 PM MST Fri Jul 23 2021
AZC013-240136-
/O.EXP.KPSR.FF.W.0072.000000T0000Z-210724T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-
626 PM MST Fri Jul 23 2021
...FLASH FLOOD WARNING FOR THE SEARS FIRE BURN SCAR WILL EXPIRE AT
630 PM MST THIS EVENING FOR MARICOPA COUNTY...
Flood waters are receding and the heavy rain has ended. Flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
A Flash Flood Watch remains in effect until 1200 AM MST Monday for a
portion of south central Arizona.
LAT...LON 3400 11158 3390 11162 3387 11175 3386 11181
3401 11182 3400 11171 3400 11162
$$
ADThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 5:42 PM MST | Special Weather Statement | PSR | 48 min | |
| Jul 22, 6:11 PM MST | Areal Flood Advisory | PSR | Maricopa | 39 min |
| Jul 22, 6:31 PM MST | Special Weather Statement | PSR | 59 min | |
| Jul 22, 6:50 PM MST | Flash Flood Warning | PSR | Maricopa | 6 hr |
| Jul 22, 7:19 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 22, 7:29 PM MST | Special Weather Statement | PSR | 61 min | |
| Jul 22, 7:40 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 35 min |
| Jul 22, 7:46 PM MST | Flash Flood Warning | PSR | Maricopa | 5 hr |
| Jul 22, 7:48 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 27 min |
| Jul 22, 7:53 PM MST | Special Weather Statement | PSR | Pinal | 37 min |
| Jul 22, 7:55 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 5 hr |
| Jul 22, 8:05 PM MST | Special Weather Statement | PSR | Maricopa | 25 min |
| Jul 22, 8:06 PM MST | Flash Flood Warning | PSR | Pinal | 4 hr |
| Jul 22, 8:15 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 22, 8:19 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 26 min |
| Jul 22, 8:29 PM MST | Special Weather Statement | PSR | Pinal | 61 min |
| Jul 22, 8:39 PM MST | Special Weather Statement | PSR | Maricopa | 51 min |
| Jul 22, 8:52 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 22, 8:56 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 22, 9:28 PM MST | Special Weather Statement | PSR | Maricopa | 47 min |
| Jul 22, 9:40 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 22, 9:45 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 22, 9:49 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 22, 9:54 PM MST | Flash Flood Warning | PSR | Gila, Maricopa | 4 hr |
| Jul 22, 10:07 PM MST | Flash Flood Warning | PSR | Gila, Maricopa, Pinal | 4 hr |
| Jul 22, 10:16 PM MST | Areal Flood Advisory | PSR | Pinal | 3 hr |
| Jul 22, 10:57 PM MST | Flash Flood Warning | PSR | Maricopa | 113 min |
| Jul 22, 11:15 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 22, 11:29 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 22, 11:43 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 23, 4:37 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 23, 8:37 AM MST | Areal Flood Warning | PSR | Gila | 4 days |
| Jul 23, 9:07 AM MST | Special Weather Statement | PSR | 38 min | |
| Jul 23, 9:30 AM MST | Special Weather Statement | PSR | 30 min | |
| Jul 23, 9:55 AM MST | Areal Flood Warning | PSR | Maricopa | 6 hr |
| Jul 23, 9:58 AM MST | Special Weather Statement | PSR | 32 min | |
| Jul 23, 10:31 AM MST | Special Weather Statement | PSR | 29 min | |
| Jul 23, 10:53 AM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 23, 11:11 AM MST | Special Weather Statement | PSR | 34 min | |
| Jul 23, 11:46 AM MST | Special Weather Statement | PSR | 29 min | |
| Jul 23, 12:02 PM MST | Special Weather Statement | PSR | 28 min | |
| Jul 23, 12:09 PM MST | Flash Flood Warning | PSR | Maricopa | 6 hr |
| Jul 23, 12:30 PM MST | Special Weather Statement | PSR | 30 min | |
| Jul 23, 12:53 PM MST | Special Weather Statement | PSR | 37 min | |
| Jul 23, 1:01 PM MST | Special Weather Statement | PSR | 29 min | |
| Jul 23, 1:11 PM MST | Flash Flood Warning | PSR | Maricopa | 5 hr |
| Jul 23, 1:34 PM MST | Special Weather Statement | PSR | 26 min | |
| Jul 23, 3:20 PM MST | Areal Flood Warning | PSR | Maricopa | 9 hr |
| Jul 23, 4:00 PM MST | Areal Flood Warning | PSR | Maricopa | 8 hr |
| Jul 23, 4:02 PM MST | Areal Flood Warning | PSR | Maricopa | 8 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.