Alert archive / Washington / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS Pendleton, OR

January 1, 1997Benton County, Walla Walla County, Washington; Morrow County, Umatilla County, Oregon

NWS Pendleton, OR issued this flash flood warning at Jan 1, 1997, 7:07 AM PST for Benton County, Walla Walla County, Washington; Morrow County, Umatilla County, Oregon. It was in force for 7 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 1, 1997, 7:07 AM PST (15:07 UTC)
Expired: Jan 1, 1997, 2:15 PM PST
In force: 7 hr
Issued by: NWS Pendleton, OR
Area: Whole counties

Counties Morrow County, OR, Umatilla County, OR, Benton County, WA, Walla Walla County, WA

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 3.1 hours before the alert went out and 288 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: 1187 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: -169 m²/s²
0-3 km storm-relative helicity: -162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPDT 011511
FFWPDT
ORC049-059-069-WAC005-071-012215-
 
BULLETIN - EAS ACTIVATION REQUESTED
SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
707 AM PST WED JAN 1 1997
 
THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A
SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL  215 PM PST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST OREGON AND NORTH CENTRAL OREGON
 
   ...UMATILLA COUNTY...MORROW COUNTY...WHEELER COUNTY
 
 
IN SOUTHEAST WASHINGTON
 
   ...BENTON COUNTY...WALLA WALLA COUNTY
 
A COMBINATION OF SNOW MELT AND RAINFALL HAS CONTRIBUTED TO INCREASING
STREAM LEVELS THROUGHOUT MORROW...WHEELER...AND UMATILLA COUNTIES OF
OREGON AS WELL AS WALLA WALLA AND BENTON COUNTIES OF WASHINGTON. IN
UMATILLA COUNTY...HIGHWAY 395 AT MILEPOST 51.5 WAS CLOSED DUE TO WATER
OVER THE ROADWAY. WALLA WALLA EMERGENCY MANAGEMENT REPORTED THAT MILL
CREEK WAS OVER ITS BANKS IN A FEW AREAS AND CONTINUES TO RISE.
 
SCATTERED SHOWERS AND MORE SNOWMELT WILL CONTRIBUTE TO ADDITIONAL
FLOODING TODAY.  SEEK HIGHER GROUND IF FLOODING THREATENS YOUR AREA.
NEVER DRIVE IN AN AREA WHERE WATER COVERS THE ROAD.
 
SMITH/DOHERTY
&

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 Jan 1, 2:38 AM PST, 4 hours 29 minutes earlier.

Area forecast discussion, Jan 1, 2:38 AM PST, 4 hours 29 minutes before

NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
230 AM PST WED JAN 1 1997

FROPA 0830Z WITH STG WINDS AHD OF FNT. KALW REPORTED SUSTAINED
WINDS 60KT. WINDS BACKED OFF CONSIDERABLY BEHIND FNT BUT WUD KEEP
HIGH WIND WARNING IN MTNS UNTIL AFTER FROPA THERE. RA AND +RA
REPORTED AT KPDT WITH .20 IN 1 HOUR. MDL QPF .25-.50 FROM 06Z-18Z
AND THAT ACCEPTED. RA TURNING TO -SHRA IN UNSTABLE AIR BEHIND FNT
BUT ADDITIONAL PRECIP SHUD BE LTD. LUKS LIKE RIVERS WILL COME UP
AGN AT MOST E SIDE LOCATIONS. MDLS SIMILAR BRINGING NEXT SYS TO CST
THURSDAY NIGHT/FRIDAY MORNING. NEVER ENDING SUB-TROPICAL MSTR TAP
WILL MAKE THIS ONE WET AGAIN. SNOW LEVEL DROPS BLO 3K FT BY 12Z FRI
SHUD HELP PUT AN END TO RUN-OFF BUT NOT BEFORE ADDITIONAL RA IN
MTNS. TOBIN

PDT 7464  ALW 7464  PSC 5343  YKM 7454

.PDT...SEE FLSPDX AND FLWSEA FOR FLOOD WRNGS/WATCHES/ADVYS.
       HIGH WIND WARNING FOR NE MTNS TODAY.

.KhPDT...VCP 21/CSR-21...OPERATIONAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 1, 5:40 AM PST	Flash Flood Warning	PDT	Yakima	9 hr
Jan 1, 5:55 AM PST	Flash Flood Warning	PDT	Columbia	6 hr
Jan 1, 11:02 AM PST	Flash Flood Warning	PDT	Klickitat	6 hr
Jan 1, 11:45 AM PST	Flash Flood Warning	PDT	Columbia, Walla Walla	5 hr
Jan 1, 7:07 AM PST	Flash Flood Warning	PDT	Wheeler	7 hr
Jan 1, 9:17 AM PST	Flash Flood Warning	PDT	Union, Wallowa	7 hr
Jan 1, 10:13 AM PST	Flash Flood Warning	PDT	Gilliam, Sherman	6 hr
Jan 1, 10:13 AM PST	Flash Flood Warning	PDT	Grant	6 hr
Jan 1, 2:01 PM PST	Flash Flood Warning	PDT	Umatilla	2 hr
Jan 1, 2:01 PM PST	Flash Flood Warning	PDT	Wheeler	2 hr

Nearby

Flash Flood Warnings in Washington, 1997 Flash Flood Warnings in Oregon, 1997 Every flash flood warning in 1997

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.