Alert archive / Washington / High Wind Watches in 2009
High Wind Watch 7, NWS Seattle, WA
NWS Seattle, WA issued this high wind watch at Nov 17, 2009, 4:05 PM PST for San Juan County, Washington. It took effect at Nov 18, 2009, 12:00 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 17, 2009, 4:05 PM PST (00:05 UTC)
- In effect from
- Nov 18, 2009, 12:00 PM PST
- Expired
- Nov 18, 2009, 3:25 AM PST
- In force
- 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 00:04 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, 0.1 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
- 22 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 697 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high wind 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 high wind watch went out at Nov 17, 3:30 PM PST, 35 minutes earlier.
Area forecast discussion, Nov 17, 3:30 PM PST, 35 minutes before
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</html>The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 4:06 PM PST | Winter Storm Watch | SEW | 11 hr | |
| Nov 18, 3:25 AM PST | High Wind Warning | SEW | San Juan | 45 hr |
| Nov 18, 3:25 AM PST | Wind Advisory | SEW | 22 hr | |
| Nov 18, 3:25 AM PST | Winter Storm Warning | SEW | 37 hr | |
| Nov 18, 4:04 AM PST | Gale Watch | SEW | 17 hr | |
| Nov 18, 4:04 AM PST | Small Craft Advisory | SEW | 17 hr | |
| Nov 18, 4:55 AM PST | High Surf Advisory | SEW | 47 hr |
Nearby
High Wind Watches in Washington, 2009Every high wind watch in 2009
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.