Alert archive / Washington / Flood Watches in 2017
Flood Watch 1, NWS Seattle, WA
NWS Seattle, WA issued this flood watch at Jan 16, 2017, 3:23 PM PST for 8 counties in Washington. It took effect at Jan 17, 2017, 6:00 PM PST. It was in force for 29 hr.
The area
The counties it named.
The facts
- Issued
- Jan 16, 2017, 3:23 PM PST (23:23 UTC)
- In effect from
- Jan 17, 2017, 6:00 PM PST
- Expired
- Jan 18, 2017, 10:36 PM PST
- In force
- 29 hr
- Issued by
- NWS Seattle, WA
- Flood severity
- None
Counties Clallam County, WA, Grays Harbor County, WA, Jefferson County, WA, King County, WA, Lewis County, WA, Mason County, WA, Pierce County, WA, Whatcom County, WA
The radar
The Seattle radar (KATX), 77 km from the middle of the area, began a volume at 23:27 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
Spokane, WA (KOTX), launched 12:00Z, 11.4 hours before the alert went out and 483 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
- 768 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jan 16, 9:21 AM PST, 6 hours 2 minutes earlier.
Area forecast discussion, Jan 16, 9:21 AM PST, 6 hours 2 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 |
|---|---|---|---|---|
| Jan 15, 8:56 PM PST | Small Craft Advisory for Rough Bar | SEW | 8 days | |
| Jan 15, 9:35 PM PST | Winter Storm Watch | SEW | 302 days | |
| Jan 16, 3:03 AM PST | Gale Watch | SEW | 12 hr | |
| Jan 16, 3:02 PM PST | Small Craft Advisory | SEW | 47 hr | |
| Jan 16, 3:27 PM PST | Winter Storm Warning | SEW | 303 days | |
| Jan 16, 3:27 PM PST | Winter Weather Advisory | SEW | 13 hr | |
| Jan 16, 3:28 PM PST | Wind Advisory | SEW | San Juan | 27 hr |
Nearby
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.