Alert archive / Washington / Flood Watches in 2011

Flood Watch 4, NWS Seattle, WA

February 14, 2011Mason County, Washington

NWS Seattle, WA issued this flood watch at Feb 14, 2011, 4:00 AM PST for Mason County, Washington. It took effect at Feb 14, 2011, 9:00 PM PST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 14, 2011, 4:00 AM PST (12:00 UTC)
In effect from: Feb 14, 2011, 9:00 PM PST
Expired: Feb 14, 2011, 1:58 PM PST
In force
Issued by: NWS Seattle, WA
Flood severity: None

County Mason County, WA

The nearest sounding before it

Salem/Mcnary, OR (KSLE), launched 12:00Z, 0.0 hours before the alert went out and 271 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: 1118 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 188 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 flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Seattle, WA wrote its last area forecast discussion before this flood watch went out at Feb 13, 9:30 PM PST, 6 hours 30 minutes earlier.

Area forecast discussion, Feb 13, 9:30 PM PST, 6 hours 30 minutes before

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The office that day

Everything else NWS Seattle, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 13, 9:09 PM PST	Gale Warning	SEW		27 hr
Feb 13, 9:09 PM PST	Storm Warning	SEW		18 hr
Feb 14, 4:00 AM PST	High Wind Warning	SEW	San Juan	11 hr
Feb 14, 4:00 AM PST	Winter Weather Advisory	SEW		11 hr
Feb 14, 1:54 PM PST	River Flood Advisory	SEW	Mason	22 hr
Feb 14, 2:39 PM PST	Wind Advisory	SEW	San Juan	6 hr

Nearby

Flood Watches in Washington, 2011 Every flood watch in 2011

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.