Alert archive / California / Special Weather Statements in 2021

Special Weather Statement, NWS Hanford, CA

July 29, 2021Mariposa County, California

NWS Hanford, CA issued this special weather statement at Jul 29, 2021, 1:52 PM PDT for Mariposa County, California. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 29, 2021, 1:52 PM PDT (20:52 UTC)
Expired: Jul 29, 2021, 2:30 PM PDT
In force: 38 min
Issued by: NWS Hanford, CA

County Mariposa County, CA

The radar

The San Joaquin Valley radar (KHNX), 150 km from the middle of the area, began a volume at 20:55 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 12:00Z, 8.9 hours before the alert went out and 237 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: 2873 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 29, 12:39 PM PDT, 1 hour 13 minutes earlier.

Area forecast discussion, Jul 29, 12:39 PM PDT, 1 hour 13 minutes before

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In the hours before

Special weather statement, Jul 29, 1:51 PM PDT, 1 minute before

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Special weather statement, Jul 29, 1:52 PM PDT, 0 minutes before

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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 28, 5:07 PM PDT	Flash Flood Warning	HNX	Madera, Mariposa, Tuolumne	3 min
Jul 28, 5:23 PM PDT	Flash Flood Warning	HNX	Madera, Mariposa, Tuolumne	82 min
Jul 28, 7:00 PM PDT	Special Weather Statement	HNX	Tulare	45 min
Jul 29, 9:38 AM PDT	Flash Flood Watch	HNX		58 hr
Jul 29, 1:51 PM PDT	Special Weather Statement	HNX	Mariposa	39 min
Jul 29, 2:03 PM PDT	Flash Flood Warning	HNX	Madera, Mariposa	117 min
Jul 29, 2:24 PM PDT	Special Weather Statement	HNX	Tuolumne	36 min
Jul 29, 3:07 PM PDT	Special Weather Statement	HNX	Mariposa	38 min
Jul 29, 3:21 PM PDT	Flash Flood Warning	HNX	Mariposa, Tuolumne	84 min
Jul 29, 3:46 PM PDT	Flash Flood Warning	HNX	Mariposa	119 min
Jul 29, 4:41 PM PDT	Areal Flood Advisory	HNX	Mariposa, Tuolumne	64 min

Nearby

Special Weather Statements in California, 2021 Every special weather statement 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.