Alert archive / Oregon / Ice Storm Warnings in 2017
Ice Storm Warning 1, NWS Pendleton, OR
NWS Pendleton, OR issued this ice storm warning at Jan 7, 2017, 3:18 PM PST for Morrow County, Umatilla County, Oregon; Columbia County, Walla Walla County, Washington. It took effect at Jan 8, 2017, 4:00 AM PST. It was in force for 17 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 7, 2017, 3:18 PM PST (23:18 UTC)
- In effect from
- Jan 8, 2017, 4:00 AM PST
- Expired
- Jan 8, 2017, 9:16 PM PST
- In force
- 17 hr
- Issued by
- NWS Pendleton, OR
Counties Morrow County, OR, Umatilla County, OR, Columbia County, WA, Walla Walla County, WA
The radar
The Pendleton radar (KPDT), 26 km from the middle of the area, began a volume at 23:21 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
Salem/Mcnary, OR (KSLE), launched 12:00Z, 11.3 hours before the alert went out and 354 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
- 1596 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 300 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this ice storm warning 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 ice storm warning went out at Jan 7, 2:59 PM PST, 19 minutes earlier.
Area forecast discussion, Jan 7, 2:59 PM PST, 19 minutes before
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Local storm report, Jan 7, 2:11 PM PST, 1 hour 7 minutes before
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</html>Local storm report, Jan 7, 2:23 PM PST, 55 minutes before
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Ice Storm Warnings in Oregon, 2017Ice Storm Warnings in Washington, 2017Every ice storm warning in 2017
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.