Alert archive / California / Flash Flood Warnings in 2024

Flash Flood Warning 3, NWS Hanford, CA

July 23, 2024Mariposa County, Tuolumne County, California

NWS Hanford, CA issued this flash flood warning at Jul 23, 2024, 6:04 PM PDT for Mariposa County, Tuolumne County, California. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 23, 2024, 6:04 PM PDT (01:04 UTC)
Expired: Jul 23, 2024, 8:00 PM PDT
In force: 116 min
Issued by: NWS Hanford, CA
Area: Storm-based polygon
Flood severity: None

Counties Mariposa County, CA, Tuolumne County, CA

The radar

The San Joaquin Valley radar (KHNX), 168 km from the middle of the area, began a volume at 01:06 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

Reno, NV (KREV), launched 00:00Z, 1.1 hours before the alert went out and 247 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: 566 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 3232 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 31 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 Hanford, CA wrote its last area forecast discussion before this flash flood warning went out at Jul 23, 1:53 PM PDT, 4 hours 11 minutes earlier.

Area forecast discussion, Jul 23, 1:53 PM PDT, 4 hours 11 minutes before

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In the hours before

Special weather statement, Jul 23, 1:54 PM PDT, 4 hours 10 minutes before

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Special weather statement, Jul 23, 2:14 PM PDT, 3 hours 50 minutes before

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Special weather statement, Jul 23, 2:31 PM PDT, 3 hours 33 minutes before

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Special weather statement, Jul 23, 2:40 PM PDT, 3 hours 24 minutes before

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Special weather statement, Jul 23, 3:10 PM PDT, 2 hours 54 minutes before

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Special weather statement, Jul 23, 3:37 PM PDT, 2 hours 27 minutes before

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      <p id="message1">
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The office that day

Everything else NWS Hanford, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 23, 5:11 PM PDT	Areal Flood Advisory	HNX	Madera	2 hr
Jul 23, 5:18 PM PDT	Special Weather Statement	HNX	Mariposa	27 min
Jul 23, 5:32 PM PDT	Special Weather Statement	HNX	Mono	28 min
Jul 23, 5:39 PM PDT	Special Weather Statement	HNX		36 min
Jul 23, 5:44 PM PDT	Areal Flood Warning	HNX	Mariposa, Tuolumne	20 min
Jul 23, 6:07 PM PDT	Special Weather Statement	HNX		23 min
Jul 24, 12:35 PM PDT	Special Weather Statement	HNX	Mono	25 min
Jul 24, 1:22 PM PDT	Areal Flood Advisory	HNX	Madera, Mariposa, Tuolumne	58 min
Jul 24, 1:35 PM PDT	Special Weather Statement	HNX	Mono	25 min
Jul 24, 2:04 PM PDT	Special Weather Statement	HNX	Mono	26 min
Jul 24, 2:09 PM PDT	Special Weather Statement	HNX	Tuolumne	36 min
Jul 24, 2:20 PM PDT	Areal Flood Warning	HNX	Madera, Mariposa, Tuolumne	102 min
Jul 24, 2:29 PM PDT	Special Weather Statement	HNX		31 min
Jul 24, 2:33 PM PDT	Severe Thunderstorm Warning	HNX	Mariposa, Tuolumne	27 min
Jul 24, 2:58 PM PDT	Severe Thunderstorm Warning	HNX	Tuolumne	32 min
Jul 24, 3:00 PM PDT	Special Weather Statement	HNX		30 min
Jul 24, 3:01 PM PDT	Areal Flood Advisory	HNX	Mariposa, Tuolumne	16 min
Jul 24, 3:17 PM PDT	Areal Flood Warning	HNX	Mariposa, Tuolumne	35 min
Jul 24, 3:30 PM PDT	Special Weather Statement	HNX		30 min
Jul 24, 3:48 PM PDT	Flash Flood Warning	HNX	Mariposa, Tuolumne	3 hr
Jul 24, 3:52 PM PDT	Flash Flood Warning	HNX	Mariposa, Tuolumne	3 hr
Jul 24, 4:02 PM PDT	Areal Flood Advisory	HNX	Madera, Mariposa, Tuolumne	118 min

Nearby

Flash Flood Warnings in California, 2024 Every flash flood warning in 2024

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.