Alert archive / Washington / Flood Watches in 2017
Flood Watch 4, NWS Seattle, WA
NWS Seattle, WA issued this flood watch at Feb 14, 2017, 10:48 AM PST for 6 counties in Washington. It took effect at Feb 15, 2017, 3:23 AM PST. It was in force for 35 hr.
The area
The counties it named.
The facts
- Issued
- Feb 14, 2017, 10:48 AM PST (18:48 UTC)
- In effect from
- Feb 15, 2017, 3:23 AM PST
- Expired
- Feb 16, 2017, 1:54 PM PST
- In force
- 35 hr
- Issued by
- NWS Seattle, WA
- Flood severity
- None
Counties Clallam County, WA, Grays Harbor County, WA, Jefferson County, WA, Skagit County, WA, Snohomish County, WA, Whatcom County, WA
The radar
The Seattle radar (KATX), 26 km from the middle of the area, began a volume at 18:58 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, 6.8 hours before the alert went out and 478 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
- 2165 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 101 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 Feb 14, 8:36 AM PST, 2 hours 12 minutes earlier.
Area forecast discussion, Feb 14, 8:36 AM PST, 2 hours 12 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 |
|---|---|---|---|---|
| Feb 13, 8:49 PM PST | Gale Warning | SEW | 59 hr | |
| Feb 14, 2:08 PM PST | Winter Storm Watch | SEW | 307 days | |
| Feb 14, 3:16 PM PST | Small Craft Advisory for Rough Bar | SEW | 70 hr | |
| Feb 14, 3:16 PM PST | Small Craft Advisory | SEW | 12 hr | |
| Feb 14, 3:42 PM PST | River Flood Warning | SEW | Mason | 70 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.