Alert archive / Oregon / Flash Flood Warnings in 1996

Flash Flood Warning 12, NWS Pendleton, OR

November 18, 1996Deschutes County, Oregon

NWS Pendleton, OR issued this flash flood warning at Nov 18, 1996, 6:30 PM PST for Deschutes County, Oregon. It was in force for 9 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: Nov 18, 1996, 6:30 PM PST (02:30 UTC)
Expired: Nov 19, 1996, 3:00 AM PST
In force: 9 hr
Issued by: NWS Pendleton, OR
Area: Whole counties

County Deschutes County, OR

The nearest sounding before it

Salem/Mcnary, OR (KSLE), launched 00:00Z, 2.5 hours before the alert went out and 180 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 512 m above ground
0-6 km bulk shear: 109 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 207 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Nov 18, 8:40 AM PST, 9 hours 50 minutes earlier.

Area forecast discussion, Nov 18, 8:40 AM PST, 9 hours 50 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 18, 6:30 PM PST	Flash Flood Warning	PDT	Crook, Grant, Jefferson, Wheeler	9 hr
Nov 19, 3:45 AM PST	Flash Flood Warning	PDT	Grant, Morrow, Umatilla	4 hr
Nov 19, 3:45 AM PST	Flash Flood Warning	PDT	Crook, Deschutes	4 hr
Nov 19, 3:45 AM PST	Flash Flood Warning	PDT	Wheeler	4 hr

Nearby

Flash Flood Warnings in Oregon, 1996 Every flash flood warning in 1996

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.