Alert archive / Washington / Flash Flood Warnings in 2023

Flash Flood Warning 8, NWS Pendleton, OR

May 27, 2023Klickitat County, Washington

NWS Pendleton, OR issued this flash flood warning at May 27, 2023, 3:18 PM PDT for Klickitat County, Washington. It was in force for 3 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
May 27, 2023, 3:18 PM PDT (22:18 UTC)
Expired
May 27, 2023, 6:30 PM PDT
In force
3 hr
Issued by
NWS Pendleton, OR
Area
Storm-based polygon
Flood severity
None

County Klickitat County, WA

The radar

The Pendleton radar (KPDT), 152 km from the middle of the area, began a volume at 22:19 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

Quillayute State, WA (KUIL), launched 12:00Z, 10.3 hours before the alert went out and 364 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.

Skew-T log-pSkew-T log-p diagram, Quillayute State, WA at 12:00Z on 2023-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Quillayute State, WA at 12:00Z on 2023-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
755 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 27, 9:38 AM PDTAreal Flood AdvisoryPDTWallowa3 hr
May 27, 12:39 PM PDTSpecial Weather StatementPDTYakima21 min
May 27, 1:20 PM PDTSpecial Weather StatementPDTKlickitat25 min
May 27, 2:00 PM PDTSpecial Weather StatementPDTBenton30 min
May 27, 2:32 PM PDTSpecial Weather StatementPDTKlickitat28 min
May 27, 3:09 PM PDTSpecial Weather StatementPDTKlickitat36 min

Nearby

Flash Flood Warnings in Washington, 2023Every flash flood warning in 2023

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.