Alert archive / Oregon / Winter Storm Watches in 2021
Winter Storm Watch 3, NWS Pendleton, OR
NWS Pendleton, OR issued this winter storm watch at Feb 24, 2021, 2:45 AM PST for 10 counties in Oregon; Columbia County, Walla Walla County, Washington. It took effect at Feb 25, 2021, 1:00 AM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 24, 2021, 2:45 AM PST (10:45 UTC)
- In effect from
- Feb 25, 2021, 1:00 AM PST
- Expired
- Feb 24, 2021, 7:24 PM PST
- In force
- Issued by
- NWS Pendleton, OR
Counties 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), 67 km from the middle of the area, began a volume at 10:47 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 00:00Z, 10.8 hours before the alert went out and 358 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
- 68 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm 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 winter storm watch went out at Feb 23, 8:36 PM PST, 6 hours 9 minutes earlier.
Area forecast discussion, Feb 23, 8:36 PM PST, 6 hours 9 minutes before
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</html>The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 2:33 PM PST | Winter Storm Warning | PDT | Crook, Deschutes, Gilliam, Grant, Jefferson, Morrow and 5 more | 67 hr |
| Feb 24, 2:34 PM PST | Wind Advisory | PDT | Crook, Deschutes, Gilliam, Grant, Jefferson, Morrow and 5 more | 51 hr |
Nearby
Winter Storm Watches in Oregon, 2021Winter Storm Watches in Washington, 2021Every winter storm watch in 2021
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.