Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 5, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jun 30, 2021, 4:08 PM MST for Gila County, 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
- Jun 30, 2021, 4:08 PM MST (23:08 UTC)
- Expired
- Jun 30, 2021, 8:00 PM MST
- In force
- 4 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Gila County, AZ, Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 73 km from the middle of the area, began a volume at 23:09 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, 11.1 hours before the alert went out and 76 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
- 301 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 2430 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -54 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
821
WGUS55 KPSR 302308
FFWPSR
AZC007-013-010300-
/O.NEW.KPSR.FF.W.0005.210630T2308Z-210701T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
408 PM MST Wed Jun 30 2021
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for...
Gila County in east central Arizona...
Maricopa County in south central Arizona...
* Until 800 PM MST.
* At 408 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the Bush Fire. Between 0.5 and 1 inch of rain
has fallen. Flash flooding is ongoing or expected to begin shortly.
Excessive rainfall over the Bush Fire burn scar will result in
debris flow moving through the Reno Creek. The debris flow can
consist of rock, mud, vegetation and other loose materials.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Doppler radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Punkin Center and Tonto Basin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3397 11141 3390 11129 3385 11128 3381 11126
3381 11139 3390 11144
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5 INCHES IN 1 HOUR
$$
MS2 follow-up statements
149
WGUS75 KPSR 010110
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
610 PM MST Wed Jun 30 2021
AZC007-013-010300-
/O.CON.KPSR.FF.W.0005.000000T0000Z-210701T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-Maricopa AZ-
610 PM MST Wed Jun 30 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING
FOR GILA AND MARICOPA COUNTIES...
At 610 PM MST, Thunderstorms produced heavy rain of 0.5 to 1 inches
earlier this evening across the warned area. Flash flooding is
ongoing or expected to begin shortly.
Excessive rainfall over the burn scar will result in debris flow
moving through the Reno Creek. The debris flow can consist of rock,
mud, vegetation and other loose materials.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Doppler radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Punkin Center and Tonto Basin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3397 11141 3390 11129 3385 11128 3381 11126
3381 11139 3390 11144
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5 INCHES IN 1 HOUR
$$
Iniguez632
WGUS75 KPSR 010258
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
758 PM MST Wed Jun 30 2021
AZC007-013-010308-
/O.EXP.KPSR.FF.W.0005.000000T0000Z-210701T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-Maricopa AZ-
758 PM MST Wed Jun 30 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 8 PM MST THIS EVENING FOR GILA
AND MARICOPA COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3397 11141 3390 11129 3385 11128 3381 11126
3381 11139 3390 11144
$$
LJHThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 2:11 AM MST | Special Weather Statement | PSR | La Paz | 19 min |
| Jun 30, 2:34 AM MST | Areal Flood Advisory | PSR | La Paz | 116 min |
| Jun 30, 8:35 AM MST | Special Weather Statement | PSR | La Paz | 55 min |
| Jun 30, 9:31 AM MST | Special Weather Statement | PSR | La Paz | 59 min |
| Jun 30, 10:35 AM MST | Special Weather Statement | PSR | La Paz | 55 min |
| Jun 30, 2:06 PM MST | Special Weather Statement | PSR | Pinal | 24 min |
| Jun 30, 2:13 PM MST | Special Weather Statement | PSR | Gila | 32 min |
| Jun 30, 4:19 PM MST | Special Weather Statement | PSR | Gila | 41 min |
| Jun 30, 4:21 PM MST | Flash Flood Warning | PSR | Maricopa, Pinal | 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.