Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 76, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 25, 2021, 9:00 AM MST for Pinal County, Arizona. It was in force for 4 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 25, 2021, 9:00 AM MST (16:00 UTC)
- Expired
- Jul 25, 2021, 1:00 PM MST
- In force
- 4 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 25 km from the middle of the area, began a volume at 16:01 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 25, 12:00 PM MST | FLASH FLOOD | 2 Nne Florence, AZ | **DELAYED REPORT** COUNTY PUBLIC WORKS REPORTED PRICE ROAD CLOSED DUE TO FLOODING AND SUDDEN RISES IN WATER. SOCIAL MEDIA VIDEOS SHOWED OTHER FLOODING FARTHER WEST ALONG HUNT HWY AND CHRISTENSEN RD. SOME VEHICLES STALLED IN THE WATER. |
| Jul 25, 12:05 PM MST | FLASH FLOOD | 8 Wsw Florence Junction, AZ | *** DELAYED REPORT *** SOCIAL MEDIA POST SHOWS WATER GREATER THAN 6 INCHES (REPORTED AS KNEE DEEP) COVERING ROADWAY IMPEDING TRAVEL ALONG SKYLINE DR. NEAR FELIX RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 4.0 hours before the alert went out and 124 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
- 151 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 521 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
973
WGUS55 KPSR 251600
FFWPSR
AZC021-252000-
/O.NEW.KPSR.FF.W.0076.210725T1600Z-210725T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
900 AM MST Sun Jul 25 2021
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for...
Pinal County in southeastern Arizona...
* Until 100 PM MST.
* At 900 AM MST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts up 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 creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Florence, Florence Junction, Magma, Queen Valley, Coolidge
Airport, Gold Camp and Valley Farms.
This includes the following highways...
AZ Route 79 between mile markers 129 and 138.
US Highway 60 between mile markers 205 and 208...and
near mile marker 209...and
near mile marker 210...and
near mile marker 211.
AZ Route 287 between mile markers 138 and 142.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3330 11156 3335 11149 3331 11135 3323 11125
3311 11114 3292 11142 3300 11148 3322 11156
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
INSThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:57 PM MST | Areal Flood Advisory | PSR | Maricopa | 5 hr |
| Jul 25, 4:45 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 25, 6:27 AM MST | Areal Flood Advisory | PSR | Pinal | 3 hr |
| Jul 25, 7:14 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 25, 7:38 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 25, 7:57 AM MST | Areal Flood Advisory | PSR | Pinal | 3 hr |
| Jul 25, 8:01 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 25, 8:45 AM MST | Flash Flood Warning | PSR | Maricopa, Pinal | 4 hr |
| Jul 25, 8:51 AM MST | Flash Flood Warning | PSR | Maricopa | 6 hr |
| Jul 25, 9:39 AM MST | Areal Flood Advisory | PSR | Maricopa | 17 min |
| Jul 25, 9:47 AM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 3 hr |
| Jul 25, 9:56 AM MST | Flash Flood Warning | PSR | Maricopa | 8 hr |
| Jul 25, 10:08 AM MST | Flash Flood Warning | PSR | Maricopa, Pinal | 4 hr |
| Jul 25, 10:16 AM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 25, 10:41 AM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 25, 12:11 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 25, 12:35 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 25, 12:54 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 25, 2:10 PM MST | Flash Flood Warning | PSR | Gila, Maricopa | 4 hr |
| Jul 25, 2:14 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 25, 2:18 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 25, 3:29 PM MST | Special Weather Statement | PSR | La Paz | 31 min |
| Jul 25, 4:02 PM MST | Flash Flood Warning | PSR | La Paz | 4 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.