Alert archive / California / Flash Flood Warnings in 2022

Flash Flood Warning 324, NWS Phoenix, AZ

October 15, 2022Imperial County, Riverside County, California

NWS Phoenix, AZ issued this flash flood warning at Oct 15, 2022, 1:30 PM PDT for Imperial County, Riverside County, California. It was in force for 6 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: Oct 15, 2022, 1:30 PM PDT (20:30 UTC)
Expired: Oct 15, 2022, 7:30 PM PDT
In force: 6 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Imperial County, CA, Riverside County, CA

The radar

The San Diego radar (KNKX), 137 km from the middle of the area, began a volume at 20:34 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 12:00Z, 8.5 hours before the alert went out and 156 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 703 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 221 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 Oct 15, 10:17 AM PDT, 3 hours 13 minutes earlier.

Area forecast discussion, Oct 15, 10:17 AM PDT, 3 hours 13 minutes before

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In the hours before

Special weather statement, Oct 15, 11:43 AM PDT, 1 hour 47 minutes before

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Special weather statement, Oct 15, 12:24 PM PDT, 1 hour 6 minutes before

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Special weather statement, Oct 15, 12:39 PM PDT, 51 minutes before

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Special weather statement, Oct 15, 12:44 PM PDT, 46 minutes before

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Special weather statement, Oct 15, 12:45 PM PDT, 45 minutes before

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Special weather statement, Oct 15, 1:03 PM PDT, 27 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
Oct 15, 6:37 AM PDT	Special Weather Statement	PSR	La Paz	53 min
Oct 15, 6:45 AM PDT	Special Weather Statement	PSR	La Paz	45 min
Oct 15, 7:20 AM PDT	Special Weather Statement	PSR	Maricopa	25 min
Oct 15, 7:24 AM PDT	Special Weather Statement	PSR	La Paz	36 min
Oct 15, 7:51 AM PDT	Areal Flood Advisory	PSR	La Paz	3 hr
Oct 15, 8:18 AM PDT	Special Weather Statement	PSR		27 min
Oct 15, 8:24 AM PDT	Special Weather Statement	PSR	Maricopa	36 min
Oct 15, 8:32 AM PDT	Areal Flood Advisory	PSR	La Paz	3 hr
Oct 15, 8:59 AM PDT	Special Weather Statement	PSR	Maricopa	31 min
Oct 15, 9:28 AM PDT	Special Weather Statement	PSR	Maricopa	47 min
Oct 15, 9:45 AM PDT	Special Weather Statement	PSR	Maricopa	45 min
Oct 15, 10:25 AM PDT	Special Weather Statement	PSR	Maricopa	50 min
Oct 15, 10:42 AM PDT	Special Weather Statement	PSR	La Paz	48 min
Oct 15, 10:46 AM PDT	Special Weather Statement	PSR		29 min
Oct 15, 10:56 AM PDT	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	34 min
Oct 15, 11:09 AM PDT	Special Weather Statement	PSR		51 min
Oct 15, 11:11 AM PDT	Special Weather Statement	PSR	Maricopa	49 min
Oct 15, 11:16 AM PDT	Severe Thunderstorm Warning	PSR	La Paz, Yuma	44 min
Oct 15, 11:32 AM PDT	Special Weather Statement	PSR	Maricopa	43 min
Oct 15, 11:43 AM PDT	Special Weather Statement	PSR	Pinal	47 min
Oct 15, 11:58 AM PDT	Severe Thunderstorm Warning	PSR	La Paz, Yuma	47 min
Oct 15, 12:08 PM PDT	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	37 min
Oct 15, 12:24 PM PDT	Special Weather Statement	PSR		51 min
Oct 15, 12:39 PM PDT	Special Weather Statement	PSR		66 min
Oct 15, 12:54 PM PDT	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	51 min
Oct 15, 1:03 PM PDT	Special Weather Statement	PSR	Yuma	42 min
Oct 15, 1:27 PM PDT	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	63 min
Oct 15, 1:38 PM PDT	Severe Thunderstorm Warning	PSR	Maricopa	52 min
Oct 15, 1:49 PM PDT	Special Weather Statement	PSR	La Paz	41 min
Oct 15, 1:50 PM PDT	Special Weather Statement	PSR		40 min
Oct 15, 2:02 PM PDT	Special Weather Statement	PSR	La Paz	43 min
Oct 15, 2:13 PM PDT	Special Weather Statement	PSR	Maricopa	47 min
Oct 15, 2:27 PM PDT	Special Weather Statement	PSR		48 min
Oct 15, 2:32 PM PDT	Severe Thunderstorm Warning	PSR	La Paz	29 min
Oct 15, 2:38 PM PDT	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Oct 15, 2:51 PM PDT	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Oct 15, 2:58 PM PDT	Special Weather Statement	PSR		47 min
Oct 15, 3:12 PM PDT	Special Weather Statement	PSR		48 min
Oct 15, 3:49 PM PDT	Severe Thunderstorm Warning	PSR	Pinal	41 min
Oct 15, 4:05 PM PDT	Special Weather Statement	PSR		40 min
Oct 15, 4:11 PM PDT	Severe Thunderstorm Warning	PSR	La Paz	49 min
Oct 15, 4:29 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Maricopa	5 hr
Oct 15, 4:32 PM PDT	Severe Thunderstorm Warning	PSR	Pinal	43 min
Oct 15, 4:35 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Oct 15, 4:47 PM PDT	Special Weather Statement	PSR	Maricopa	43 min
Oct 15, 4:58 PM PDT	Flash Flood Warning Considerable damage threat	PSR	La Paz, Maricopa	4 hr
Oct 15, 11:22 AM PDT	Special Weather Statement	PSR	Imperial	38 min
Oct 15, 11:34 AM PDT	Severe Thunderstorm Warning	PSR	Imperial	41 min
Oct 15, 12:11 PM PDT	Severe Thunderstorm Warning	PSR	Imperial	49 min
Oct 15, 12:44 PM PDT	Special Weather Statement	PSR	Imperial	46 min
Oct 15, 12:45 PM PDT	Special Weather Statement	PSR	Riverside	45 min
Oct 15, 1:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 1:07 PM PDT	Severe Thunderstorm Warning	PSR	Imperial, Riverside	38 min
Oct 15, 1:19 PM PDT	Severe Thunderstorm Warning	PSR	Imperial	41 min
Oct 15, 1:59 PM PDT	Special Weather Statement	PSR	Imperial	46 min
Oct 15, 2:28 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 2:47 PM PDT	Severe Thunderstorm Warning	PSR	Imperial	43 min
Oct 15, 2:50 PM PDT	Special Weather Statement	PSR	Riverside	40 min
Oct 15, 3:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	4 hr
Oct 15, 3:29 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 3:32 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Oct 15, 4:12 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	5 hr

Nearby

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.