Alert archive / Oregon / Flash Flood Warnings in 1996

Flash Flood Warning 13, NWS Portland, OR

November 18, 1996Linn County, Oregon

NWS Portland, OR issued this flash flood warning at Nov 18, 1996, 9:44 PM PST for Linn County, Oregon. It was in force for 4 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, 9:44 PM PST (05:44 UTC)
Expired: Nov 19, 1996, 2:00 AM PST
In force: 4 hr
Issued by: NWS Portland, OR
Area: Whole counties

County Linn County, OR

The radar

The Portland,OR radar (KRTX), 140 km from the middle of the area, began a volume at 06:01 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 00:00Z, 5.7 hours before the alert went out and 60 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.

In the hours before

Local storm report, Nov 18, 7:44 PM PST, 2 hours before

STORM REPORT
NATIONAL WEATHER SERVICE PORTLAND, OR
739 PM PST MON NOV 18 1996

TIME(PDT)   .....CITY LOCATION.......STATE   ...EVENT/REMARKS...
            ....COUNTY LOCATION....

730 PM      40 MILES EAST OF EUGENE   OR      4.30 INCHES OF RAIN PAST
            LANE                              24 HOURS. MOSTLY THIS
                                              AFTERNOON. SMALL STREAM
                                              IS FAR OVER ITS BANKS.
                                              LOCATION IS NEAR HIWAY 126
                                              AT 1100 FT.

Local storm report, Nov 18, 8:14 PM PST, 1 hour 30 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE PORTLAND, OR
815 PM PST MON NOV 18 1996

TIME(PDT)   .....CITY LOCATION.......STATE   ...EVENT/REMARKS...
            ....COUNTY LOCATION....

815 PM      HOOD RIVER, OREGON                4 INCHES OF SNOW SINCE THIS
                                              AFTERNOON.

END

Local storm report, Nov 18, 8:39 PM PST, 1 hour 5 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE PORTLAND, OR
840 PM PST MON NOV 18 1996

TIME(PDT)   .....CITY LOCATION.......STATE   ...EVENT/REMARKS...
            ....COUNTY LOCATION....

840 PM      HILLSBORO, OREGON                4 INCHES OF SNOW ON THE GROUND.

HINTZ
END

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 18, 5:05 PM PST	Flash Flood Warning	PQR	Douglas, Josephine	19 hr
Nov 18, 5:25 PM PST	Flash Flood Warning	PQR	Marion, Polk	9 hr
Nov 18, 5:25 PM PST	Flash Flood Warning	PQR	Clackamas	9 hr
Nov 18, 5:35 PM PST	Flash Flood Warning	PQR	Marion, Polk	8 hr
Nov 18, 5:35 PM PST	Flash Flood Warning	PQR	Clackamas	8 hr
Nov 18, 8:48 PM PST	Flash Flood Warning	PQR	Coos	12 hr
Nov 18, 8:48 PM PST	Flash Flood Warning	PQR	Curry, Douglas, Jackson, Josephine	12 hr
Nov 18, 9:27 PM PST	Flash Flood Warning	PQR	Benton, Lane, Lincoln, Linn	5 hr
Nov 18, 9:44 PM PST	Flash Flood Warning	PQR	Benton, Lane, Lincoln	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; radar from the NEXRAD Level II archive.