Alert archive / Washington / Flash Flood Warnings in 1997
Flash Flood Warning 20, NWS Pendleton, OR
NWS Pendleton, OR issued this flash flood warning at Jan 31, 1997, 10:35 AM PST for Columbia County, Walla Walla County, Washington. It was in force for 6 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 31, 1997, 10:35 AM PST (18:35 UTC)
- Expired
- Jan 31, 1997, 4:30 PM PST
- In force
- 6 hr
- Issued by
- NWS Pendleton, OR
- Area
- Whole counties
Counties Columbia County, WA, Walla Walla County, WA
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 6.6 hours before the alert went out and 210 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 520 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPDT 311837 FFWPDT ORC049-059-061-063-WAC013-071-010030- BULLETIN SMALL STREAM FLOOD WARNING NATIONAL WEATHER SERVICE PENDLETON OR 1035 AM PST FRI JAN 31 1997 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL 430 PM PST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST OREGON ...SOUTHERN MORROW COUNTY...EASTERN UMATILLA COUNTY ...UNION COUNTY...WALLOWA COUNTY IN SOUTHEAST WASHINGTON ...COLUMBIA COUNTY...EASTERN WALLA WALLA COUNTY AREAS OF HEAVY RAIN CONTINUE IN THE BLUE MOUNTAINS THIS MORNING. OVERNIGHT RAINFALL RANGED FROM HALF AN INCH TO NEAR TWO INCHES...AND HAVE CAUSED MANY SMALL STREAMS TO BE AT BANKFUL OR OVERFLOW. AT 1000 AM...AT WAITSBURG WA...COPPEI CREEK HAS OVERFLOWED ITS BANKS. IN DAYTON...THE PATIT STREET BRIDGE IS CLOSED AND SANDBAGGING IS IN PROGRESS. IN UMATILLA COUNTY...FLOODING HAS OCCURRED IN THE TOWN OF ADAMS. IN EASTERN WALLA WALLA COUNTY...SEVERAL ROADS ARE CLOSED DUE TO MUD SLIDES. IN SOUTHERN MORROW COUNTY...THE LOWER HINTON CREEK IS FLOWING NEAR BANKFUL AND OVERFLOWING AT SEVERAL PLACES. OTHER STREAMS EXPECTED TO FLOOD INCLUDE THE PATIT CREEK...MILL CREEK...THE NORTH AND SOUTH FORK OF THE TOUCHET RIVER...AND THE TUCANNON RIVER. SMALL STREAMS WILL CONTINUE TO RISE THROUGHOUT TODAY EVEN IF RAIN DECREASES ACROSS THE AREA THIS MORNING. IN ADDITION...MODERATE RAIN IS EXPECTED TO MOVE INTO THE AREA THIS AFTERNOON. IF YOU LIVE NEAR A STREAM...YOU SHOULD BE PREPARED TO TAKE APPROPRIATE ACTIONS. FB &
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 31, 8:03 AM PST, 2 hours 32 minutes earlier.
Area forecast discussion, Jan 31, 8:03 AM PST, 2 hours 32 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
800 AM PST FRI JAN 31 1997
SN IS GONE AT KPDT THIS AM. FEW CWA LOCATIONS REPORTG MOD RA. NEW
QPS AMOUNT FOR MEH LOW FOR FIRST PERIOD. FORECAST AMOUNT OF 0.25
12-18Z AND KMEH ALREADY RECIEVED 0.25 ATTM. STLT WATER VAPOR
SHOWS BACK EDGE OF FRNT MOVG ONTO N ORE COAST. KAST OBS ALSO
INDICATE FRNT IS THRU THERE. FRNT SHOULD BE IN KALW/KPDT AREA NR
00Z. PCPN SHWRY BHND FRNT TIL TROF PASSAGE SAT EVE. ZONES LOOK
GOOD WITH ONLY MINOR CHGS. WILL LWR SN LVLS IN MTNS SAT. SB
PDT 9633 ALW 9633 PSC 8522 YKM 9522
.PDT...FLOOD WATCH ORE ZONES 17>20.
FLOOD WATCH WA ZONE 24.
SEE ALSO PDXFFWPDT FOR SMALL STREAM FLOOD WARNINGS.
.KPDT...VCP21/CSR21 OPERATIONAL.The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 9:35 PM PST | Flash Flood Warning | PDT | Columbia | 8 hr |
| Jan 30, 9:35 PM PST | Flash Flood Warning | PDT | Walla Walla | 8 hr |
| Jan 31, 9:34 AM PST | Flash Flood Warning | PDT | Columbia, Walla Walla | 4 hr |
| Jan 31, 2:27 PM PST | Flash Flood Warning | PDT | Walla Walla | 12 hr |
| Jan 31, 3:50 PM PST | Flash Flood Warning | PDT | Columbia | 4 hr |
Nearby
Flash Flood Warnings in Washington, 1997Every 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.