Alert archive / Oregon / Flood Watches in 2011
Flood Watch 3, NWS Pendleton, OR
NWS Pendleton, OR issued this flood watch at Apr 3, 2011, 1:12 PM PDT for 11 counties in Oregon; Columbia County, Walla Walla County, Washington. It took effect at Apr 4, 2011, 11:00 AM PDT. It was in force for 26 hr.
The area
The counties it named.
The facts
- Issued
- Apr 3, 2011, 1:12 PM PDT (20:12 UTC)
- In effect from
- Apr 4, 2011, 11:00 AM PDT
- Expired
- Apr 5, 2011, 1:19 PM PDT
- In force
- 26 hr
- Issued by
- NWS Pendleton, OR
- Flood severity
- None
Counties Crook County, OR, Deschutes County, OR, Gilliam County, OR, Grant County, OR, Jefferson County, OR, Morrow County, OR, Umatilla County, OR, Union County, OR, Wallowa County, OR, Wasco County, OR, Wheeler County, OR, Columbia County, WA, Walla Walla County, WA
The radar
The Pendleton radar (KPDT), 77 km from the middle of the area, began a volume at 20:11 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, 8.2 hours before the alert went out and 369 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
- 1062 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 71 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 Pendleton, OR wrote its last area forecast discussion before this flood watch went out at Apr 2, 1:58 PM PDT, 23 hours 14 minutes earlier.
Area forecast discussion, Apr 2, 1:58 PM PDT, 23 hours 14 minutes before
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Flood Watches in Oregon, 2011Flood Watches in Washington, 2011Every 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; radar from the NEXRAD Level II archive.