Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 194, NWS Phoenix, AZ

August 19, 2022Pinal County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Aug 19, 2022, 3:29 PM MST for Pinal 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 counties it named.

The facts

Issued: Aug 19, 2022, 3:29 PM MST (22:29 UTC)
Expired: Aug 19, 2022, 6:37 PM MST
In force: 3 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), 52 km from the middle of the area, began a volume at 22:32 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, 10.5 hours before the alert went out and 82 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 578 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 1151 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Aug 19, 10:26 AM MST, 5 hours 3 minutes earlier.

Area forecast discussion, Aug 19, 10:26 AM MST, 5 hours 3 minutes before

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In the hours before

Special weather statement, Aug 19, 11:17 AM MST, 4 hours 12 minutes before

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Special weather statement, Aug 19, 1:32 PM MST, 1 hour 57 minutes before

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Special weather statement, Aug 19, 1:40 PM MST, 1 hour 49 minutes before

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Special weather statement, Aug 19, 2:03 PM MST, 1 hour 26 minutes before

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Special weather statement, Aug 19, 2:14 PM MST, 1 hour 15 minutes before

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Special weather statement, Aug 19, 2:54 PM MST, 35 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
254 PM MST Fri Aug 19 2022

AZZ548-549-551-553-555-192245-
Fountain Hills/East Mesa AZ-Northwest Pinal County AZ-
Southeast Valley/Queen Creek AZ-East Valley AZ-
Apache Junction/Gold Canyon AZ-
254 PM MST Fri Aug 19 2022

...A strong thunderstorm will impact portions of Maricopa and Pinal
Counties through 345 PM MST...

At 253 PM MST, Doppler radar was tracking a strong thunderstorm near
Apache Junction, moving southwest at 10 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Mesa, Chandler, Gilbert, Apache Junction, Queen Creek, Chandler
Heights, Seville,  Phoenix Mesa Gateway Airport, Gold Camp and
Higley.

This includes the following highways...
US Highway 60 between mile markers 187 and 196.
AZ Route 87 between mile markers 164 and 167.
AZ Route 202 between mile markers 29 and 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3343 11161 3335 11148 3309 11164 3331 11189
TIME...MOT...LOC 2153Z 037DEG 9KT 3336 11161

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 18, 5:15 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	45 min
Aug 18, 5:18 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	21 min
Aug 18, 5:19 PM MST	Special Weather Statement	PSR		41 min
Aug 18, 5:39 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	14 min
Aug 18, 5:43 PM MST	Special Weather Statement	PSR		47 min
Aug 18, 6:09 PM MST	Special Weather Statement	PSR		51 min
Aug 18, 6:19 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 18, 6:20 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 18, 6:23 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	67 min
Aug 18, 6:24 PM MST	Severe Thunderstorm Warning	PSR	La Paz	25 min
Aug 18, 6:30 PM MST	Special Weather Statement	PSR		45 min
Aug 18, 6:32 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Yuma	43 min
Aug 18, 6:35 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	25 min
Aug 18, 6:37 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	23 min
Aug 18, 6:40 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Maricopa	4 hr
Aug 18, 6:46 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 18, 6:52 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	23 min
Aug 18, 6:58 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Aug 18, 7:07 PM MST	Special Weather Statement	PSR	La Paz	53 min
Aug 18, 7:09 PM MST	Special Weather Statement	PSR		51 min
Aug 18, 7:41 PM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Aug 18, 7:42 PM MST	Severe Thunderstorm Warning	PSR	La Paz	48 min
Aug 18, 7:52 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Aug 18, 7:57 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Maricopa, Yuma	3 hr
Aug 18, 7:58 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Yuma	4 hr
Aug 18, 8:09 PM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Aug 18, 8:21 PM MST	Special Weather Statement	PSR	Maricopa	39 min
Aug 18, 8:26 PM MST	Severe Thunderstorm Warning	PSR	La Paz	32 min
Aug 18, 8:27 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Aug 18, 8:32 PM MST	Dust Storm Warning	PSR	La Paz, Yuma	88 min
Aug 18, 8:43 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	32 min
Aug 18, 8:45 PM MST	Flash Flood Warning	PSR	Maricopa	4 hr
Aug 18, 8:46 PM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Aug 18, 8:56 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 18, 9:00 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Yuma	4 hr
Aug 18, 9:30 PM MST	Dust Storm Warning	PSR	Yuma	60 min
Aug 18, 9:34 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Aug 18, 9:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 18, 10:12 PM MST	Severe Thunderstorm Warning	PSR	La Paz, Yuma	33 min
Aug 18, 10:41 PM MST	Special Weather Statement	PSR		49 min
Aug 19, 1:57 AM MST	Areal Flood Advisory	PSR	Gila	3 hr
Aug 19, 11:17 AM MST	Special Weather Statement	PSR	Gila	43 min
Aug 19, 1:32 PM MST	Special Weather Statement	PSR	Pinal	43 min
Aug 19, 1:40 PM MST	Special Weather Statement	PSR	Pinal	50 min
Aug 19, 2:03 PM MST	Special Weather Statement	PSR		42 min
Aug 19, 2:14 PM MST	Special Weather Statement	PSR	Pinal	46 min
Aug 19, 2:31 PM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	119 min
Aug 19, 2:35 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	28 min
Aug 19, 2:46 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	29 min
Aug 19, 2:54 PM MST	Special Weather Statement	PSR	Pinal	51 min
Aug 19, 3:02 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	28 min
Aug 19, 3:28 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	47 min
Aug 19, 3:43 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	3 hr
Aug 19, 3:48 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	42 min
Aug 19, 3:50 PM MST	Special Weather Statement	PSR		40 min
Aug 19, 3:58 PM MST	Special Weather Statement	PSR		47 min
Aug 19, 4:01 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	59 min
Aug 19, 4:18 PM MST	Special Weather Statement	PSR		42 min
Aug 19, 4:42 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	5 hr
Aug 19, 4:50 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 19, 4:59 PM MST	Special Weather Statement	PSR		46 min
Aug 18, 11:25 PM MST	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr

Nearby

Flash Flood Warnings in Arizona, 2022 Every flash flood warning in 2022

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.