Alert archive / Washington / Flash Flood Warnings in 1997

Flash Flood Warning 1, NWS Pendleton, OR

January 1, 1997Yakima County, Washington

NWS Pendleton, OR issued this flash flood warning at Jan 1, 1997, 5:40 AM PST for Yakima County, Washington. 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: Jan 1, 1997, 5:40 AM PST (13:40 UTC)
Expired: Jan 1, 1997, 2:30 PM PST
In force: 9 hr
Issued by: NWS Pendleton, OR
Area: Whole counties

County Yakima County, WA

The nearest sounding before it

Salem/Mcnary, OR (KSLE), launched 12:00Z, 1.7 hours before the alert went out and 245 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: 50 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 203 m²/s²
0-3 km storm-relative helicity: 274 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 011336
FFWPDT
WAC077-012230-
 
BULLETIN - EAS ACTIVATION REQUESTED
SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
540 AM PST WED JAN 01 1997
 
THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A
SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL  230 PM PST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL WASHINGTON
 
   ...YAKIMA COUNTY
 
 
 
YAKIMA COUNTY EMERGENCY MANAGEMENT HAS REPORTED THAT TOPPENISH CREEK HAS
SWOLLEN ABOVE ITS BANKS.  HIGHWAY 97 OVER SATUS PASS IS CLOSED DUE TO
WATER OVER THE ROAD.  OTHER SMALL STREAMS IN YAKIMA COUNTY ARE
RISING AND ARE EXPECTED TO CAUSE FLOODING TODAY.  SNOW MELT AND
SCATTERED SHOWERS WILL CONTRIBUTE TO MORE FLOODING THIS AFTERNOON.
 V
RESIDENTS ACROSS YAKIMA COUNTY SHOULD BE PREPARED FOR RISING STREAM
LEVELS TODAY.  SEEK HIGHER GROUND IF FLOODING THREATENS YOUR AREA.
 
SMITH/TOBIN

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, 3 hours 2 minutes earlier.

Area forecast discussion, Jan 1, 2:38 AM PST, 3 hours 2 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, 5:55 AM PST	Flash Flood Warning	PDT	Columbia	6 hr
Jan 1, 7:07 AM PST	Flash Flood Warning	PDT	Benton, Walla Walla	7 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

Nearby

Flash Flood Warnings in Washington, 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.