Alert archive / Washington / Wind Advisories in 2007
Wind Advisory 9, NWS Seattle, WA
NWS Seattle, WA issued this wind advisory at Sep 29, 2007, 8:17 PM PDT for San Juan County, Washington. It took effect at Sep 29, 2007, 11:00 PM PDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Sep 29, 2007, 8:17 PM PDT (03:17 UTC)
- In effect from
- Sep 29, 2007, 11:00 PM PDT
- Expired
- Sep 30, 2007, 11:00 AM PDT
- In force
- 12 hr
- Issued by
- NWS Seattle, WA
County San Juan County, WA
The radar
The Seattle radar (KATX), 54 km from the middle of the area, began a volume at 03:19 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
Quillayute State, WA (KUIL), launched 00:00Z, 3.3 hours before the alert went out and 127 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 538 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 264 m²/s²
- 0-3 km storm-relative helicity
- 944 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS76 KSEW 300317 NPWSEW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 817 PM PDT SAT SEP 29 2007 WAZ001-503-506-510-511-301300- /O.NEW.KSEW.WI.Y.0009.070930T0600Z-070930T1800Z/ SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY- ADMIRALTY INLET AREA-HOOD CANAL AREA- 817 PM PDT SAT SEP 29 2007 ...WIND ADVISORY IN EFFECT UNTIL 11 AM PDT SUNDAY... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WIND ADVISORY FOR THE NORTH INTERIOR AND HOOD CANAL AREA OF WESTERN WASHINGTON...WHICH IS IN EFFECT UNTIL 11 AM PDT SUNDAY MORNING. SOUTH WINDS OF 30 TO 35 MPH WITH GUSTS TO 45 MPH ARE EXPECTED TO DEVELOP LATER THIS EVENING AND CONTINUE THROUGH SUNDAY MORNING. THE STRONGEST WINDS IN THE HOOD CANAL AREA WILL LIKELY OCCUR NORTH OF THE HOOD CANAL BRIDGE. WINDS THIS STRONG CAN SNAP SMALL TREE BRANCHES...TOPPLE SMALL OR SHALLOW ROOTED TREES...AND CAUSE LOCAL POWER OUTAGES. MOTORISTS...ESPECIALLY THOSE WITH HIGH PROFILE VEHICLES...SHOULD ALSO BE ALERT FOR SUDDEN...STRONG CROSS WINDS. $$ MERCER
1 follow-up statement
000 WWUS76 KSEW 301042 NPWSEW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 342 AM PDT SUN SEP 30 2007 WAZ001-503-506-510-511-301800- /O.CON.KSEW.WI.Y.0009.000000T0000Z-070930T1800Z/ SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY- ADMIRALTY INLET AREA-HOOD CANAL AREA- 342 AM PDT SUN SEP 30 2007 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING... SOUTH WINDS OF 25 TO 35 MPH WITH GUSTS TO 45 MPH WILL CONTINUE THIS MORNING. THE STRONGEST WINDS IN THE HOOD CANAL AREA WILL LIKELY OCCUR NORTH OF THE HOOD CANAL BRIDGE. WINDS THIS STRONG CAN SNAP SMALL TREE BRANCHES...TOPPLE SMALL OR SHALLOW ROOTED TREES...AND CAUSE LOCAL POWER OUTAGES. MOTORISTS... ESPECIALLY THOSE WITH HIGH PROFILE VEHICLES...SHOULD ALSO BE ALERT FOR SUDDEN...STRONG CROSS WINDS. $$ MCDONNAL
Nearby
Wind Advisories in Washington, 2007Every wind advisory 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; radar from the NEXRAD Level II archive.