Alert archive / California / Special Weather Statements in 2012

Special Weather Statement, NWS San Diego, CA

October 11, 2012Orange County, California

NWS San Diego, CA issued this special weather statement at Oct 11, 2012, 9:51 AM PDT for Orange County, California. It was in force for 24 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: Oct 11, 2012, 9:51 AM PDT (16:51 UTC)
Expired: Oct 11, 2012, 10:15 AM PDT
In force: 24 min
Issued by: NWS San Diego, CA

County Orange County, CA

The radar

The San Diego radar (KNKX), 56 km from the middle of the area, began a volume at 16:54 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, 4.9 hours before the alert went out and 59 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: 64 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 719 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 11, 7:39 AM PDT	Special Marine Warning	SGX		36 min
Oct 11, 8:51 AM PDT	Areal Flood Advisory	SGX	Orange, Riverside, San Diego	2 hr
Oct 11, 9:24 AM PDT	Special Marine Warning	SGX		36 min
Oct 11, 9:27 AM PDT	Special Weather Statement	SGX	Orange	48 min
Oct 11, 10:26 AM PDT	Special Marine Warning	SGX		34 min
Oct 11, 10:40 AM PDT	Areal Flood Advisory	SGX	Orange, Riverside, San Diego	3 hr

Nearby

Special Weather Statements in California, 2012 Every special weather statement in 2012

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.