Alert archive / Washington / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 3, NWS Portland, OR

October 19, 2007Pacific County, Washington

NWS Portland, OR issued this severe thunderstorm warning at Oct 19, 2007, 7:37 PM PDT for Pacific County, Washington. It was in force for 29 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: Oct 19, 2007, 7:37 PM PDT (02:37 UTC)
Expired: Oct 19, 2007, 8:06 PM PDT
In force: 29 min
Issued by: NWS Portland, OR
Area: Storm-based polygon

County Pacific County, WA

The nearest sounding before it

Salem/Mcnary, OR (KSLE), launched 00:00Z, 2.6 hours before the alert went out and 191 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: 75 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Portland, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 19, 2:15 PM PDT, 5 hours 22 minutes earlier.

Area forecast discussion, Oct 19, 2:15 PM PDT, 5 hours 22 minutes before

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Hazardous weather outlook, Oct 19, 5:23 AM PDT, 14 hours 14 minutes before

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In the hours before

Special weather statement, Oct 19, 2:09 PM PDT, 5 hours 28 minutes before

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Special weather statement, Oct 19, 2:56 PM PDT, 4 hours 41 minutes before

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The office that day

Everything else NWS Portland, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 19, 7:31 PM PDT	Special Marine Warning	PQR		36 min
Oct 20, 8:03 AM PDT	Areal Flood Advisory	PQR	Clackamas, Marion, Multnomah, Washington, Yamhill	6 hr
Oct 20, 8:21 AM PDT	Heavy Snow Warning	PQR		7 hr
Oct 20, 3:14 PM PDT	Snow Advisory	PQR		6 hr

Nearby

Severe Thunderstorm Warnings in Washington, 2007 Every severe thunderstorm warning in 2007

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.