Alert archive / California / Special Weather Statements in 2015

Special Weather Statement, NWS Sacramento, CA

July 8, 2015Lake County, California

NWS Sacramento, CA issued this special weather statement at Jul 8, 2015, 5:21 PM PDT for Lake County, California. It was in force for 54 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 8, 2015, 5:21 PM PDT (00:21 UTC)
Expired: Jul 8, 2015, 6:15 PM PDT
In force: 54 min
Issued by: NWS Sacramento, CA

County Lake County, CA

The radar

The Sacramento radar (KDAX), 121 km from the middle of the area, began a volume at 00:21 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

Medford/Jackson, OR (KMFR), launched 00:00Z, 0.4 hours before the alert went out and 372 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: 347 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1398 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 32 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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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 Sacramento, CA wrote its last area forecast discussion before this special weather statement went out at Jul 8, 3:31 PM PDT, 1 hour 50 minutes earlier.

Area forecast discussion, Jul 8, 3:31 PM PDT, 1 hour 50 minutes before

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In the hours before

Special weather statement, Jul 8, 1:44 PM PDT, 3 hours 37 minutes before

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Local storm report, Jul 8, 2:41 PM PDT, 2 hours 40 minutes before

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Special weather statement, Jul 8, 3:41 PM PDT, 1 hour 40 minutes before

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Local storm report, Jul 8, 3:51 PM PDT, 1 hour 30 minutes before

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Special weather statement, Jul 8, 4:14 PM PDT, 1 hour 7 minutes before

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Special weather statement, Jul 8, 5:21 PM PDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 5:11 PM PDT	Areal Flood Advisory	STO	Lake	3 hr
Jul 8, 6:12 PM PDT	Areal Flood Warning	STO	Lassen, Plumas, Shasta, Tehama	6 hr
Jul 9, 11:15 AM PDT	Special Weather Statement	STO	El Dorado	45 min
Jul 9, 2:49 PM PDT	Flood Watch	STO		5 hr
Jul 9, 3:03 PM PDT	Special Weather Statement	STO	Plumas	87 min

Nearby

Special Weather Statements in California, 2015 Every special weather statement in 2015

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.