Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 159, NWS Phoenix, AZ

August 14, 2022Yuma County, Arizona; Imperial County, California

NWS Phoenix, AZ issued this flash flood warning at Aug 14, 2022, 9:46 PM MST for Yuma County, Arizona; Imperial County, California. 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 counties it named.

The facts

Issued: Aug 14, 2022, 9:46 PM MST (04:46 UTC)
Expired: Aug 15, 2022, 1:30 AM MST
In force: 4 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Yuma County, AZ, Imperial County, CA

The radar

The Yuma radar (KYUX), 46 km from the middle of the area, began a volume at 04:47 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

San Diego, CA (KNKX), launched 00:00Z, 4.8 hours before the alert went out and 240 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2391 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 34 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 14, 8:33 PM MST, 1 hour 13 minutes earlier.

Area forecast discussion, Aug 14, 8:33 PM MST, 1 hour 13 minutes before

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In the hours before

Special weather statement, Aug 14, 7:51 PM MST, 1 hour 55 minutes before

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Local storm report, Aug 14, 7:56 PM MST, 1 hour 50 minutes before

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Local storm report, Aug 14, 8:09 PM MST, 1 hour 37 minutes before

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Local storm report, Aug 14, 8:22 PM MST, 1 hour 24 minutes before

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Local storm report, Aug 14, 8:56 PM MST, 50 minutes before

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Special weather statement, Aug 14, 8:56 PM MST, 50 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 5:05 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	4 hr
Aug 14, 5:14 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	46 min
Aug 14, 5:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Aug 14, 5:19 PM MST	Special Weather Statement	PSR	La Paz	56 min
Aug 14, 5:22 PM MST	Dust Storm Warning	PSR	Pinal	53 min
Aug 14, 5:33 PM MST	Special Weather Statement	PSR	Maricopa	57 min
Aug 14, 5:46 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Aug 14, 5:48 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Aug 14, 5:58 PM MST	Special Weather Statement	PSR	Pinal	47 min
Aug 14, 6:08 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	3 hr
Aug 14, 6:14 PM MST	Special Weather Statement	PSR	La Paz	61 min
Aug 14, 6:15 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Aug 14, 6:30 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Yuma	45 min
Aug 14, 6:31 PM MST	Special Weather Statement	PSR	Maricopa	44 min
Aug 14, 6:35 PM MST	Dust Storm Warning	PSR	La Paz, Yuma	55 min
Aug 14, 6:46 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Yuma	3 hr
Aug 14, 6:53 PM MST	Dust Storm Warning	PSR	Yuma	67 min
Aug 14, 7:12 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Aug 14, 7:18 PM MST	Dust Storm Warning	PSR	La Paz, Yuma	57 min
Aug 14, 7:19 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Aug 14, 7:21 PM MST	Dust Storm Warning	PSR	La Paz	54 min
Aug 14, 7:40 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	3 hr
Aug 14, 7:50 PM MST	Special Weather Statement	PSR	La Paz	25 min
Aug 14, 7:51 PM MST	Special Weather Statement	PSR		24 min
Aug 14, 8:01 PM MST	Dust Storm Warning	PSR	Yuma	59 min
Aug 14, 8:56 PM MST	Special Weather Statement	PSR	Yuma	64 min
Aug 15, 2:50 AM MST	Special Weather Statement	PSR		25 min
Aug 15, 4:41 PM MST	Special Weather Statement	PSR	Gila	49 min
Aug 14, 5:53 PM MST	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 14, 8:16 PM MST	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 15, 1:52 PM MST	Special Weather Statement	PSR	Riverside	53 min
Aug 15, 2:33 PM MST	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 15, 2:36 PM MST	Special Weather Statement	PSR	Riverside	39 min
Aug 15, 2:45 PM MST	Severe Thunderstorm Warning	PSR	Riverside, San Bernardino	45 min
Aug 15, 3:00 PM MST	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	4 hr
Aug 15, 3:30 PM MST	Special Weather Statement	PSR	Riverside	45 min
Aug 15, 4:43 PM MST	Special Weather Statement	PSR	Riverside	47 min
Aug 15, 4:51 PM MST	Severe Thunderstorm Warning	PSR	Riverside	39 min

Nearby

Flash Flood Warnings in Arizona, 2022 Flash Flood Warnings in California, 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.