Alert archive / Oregon / Flash Flood Warnings in 1997

Flash Flood Warning 22, NWS Pendleton, OR

January 31, 1997Umatilla County, Union County, Wallowa County, Oregon; Columbia County, Washington

NWS Pendleton, OR issued this flash flood warning at Jan 31, 1997, 3:50 PM PST for Umatilla County, Union County, Wallowa County, Oregon; Columbia County, Washington. 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: Jan 31, 1997, 3:50 PM PST (23:50 UTC)
Expired: Jan 31, 1997, 8:00 PM PST
In force: 4 hr
Issued by: NWS Pendleton, OR
Area: Whole counties

Counties Umatilla County, OR, Union County, OR, Wallowa County, OR, Columbia County, WA

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.8 hours before the alert went out and 253 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: 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

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPDT 312350
FFWPDT
ORC049-059-061-063-WAC013-010400-
 
BULLETIN
SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
350 PM PST FRI JAN 31 1997
 
THE NATIONAL WEATHER SERVICE IN PENDLETON HAS EXTENDED THE
SMALL STREAM FLOOD WARNING UNTIL 800 PM PST FOR PEOPLE IN THE
FOLLOWING LOCATIONS...
 
IN NORTHEAST OREGON
 
   ...SOUTHERN MORROW COUNTY...UMATILLA COUNTY...UNION COUNTY
   ...WALLOWA COUNTY
 
 
IN SOUTHEAST WASHINGTON
 
   ...COLUMBIA COUNTY
 
AT 400PM...MANY SMALL STREAMS AND RIVERS CONTINUE RUNNING HIGH AROUND
THE NORTHERN BLUE MOUNTAINS AND THROUGHOUT THE FOOTHILLS. COUNTY
OFFICIALS REPORT MANY SMALL STREAMS NEAR OR ABOVE FLOOD STAGE AT THIS
TIME. SOME STREAMS HAVE BEGUN TO RECEDE BUT ANOTHER BATCH OF RAIN WILL
MOVE ACROSS THE REGION EARLY THIS EVENING AGGRAVATING THE FLOODING
SITUATION. THE RAIN WILL NOT BE AS HEAVY OR LAST AS LONG AS THE
PREVIOUS RAINS...BUT IT WILL BE ENOUGH TO KEEP THE SMALL STREAMS
RUNNING HIGH.
 
AVOID DRIVING OVER FLOODED ROADS THAT ARE COVERED WITH WATER SINCE ROAD
DAMAGE MAY EXIST UNDERNEATH THE WATER.
 
SOLOMON

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, 2:00 PM PST, 1 hour 50 minutes earlier.

Area forecast discussion, Jan 31, 2:00 PM PST, 1 hour 50 minutes before

NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
200 PM PST FRI JAN 31 1997

FROPA AT KDLS AROUND 18Z AND KPDT 20Z.  MODELS SLOW ON TIMING OF
FRNT AND LOOKG AT STLT LOOPER THINK SLOW ON TROF PASSAGE ALSO.
WILL SPEED THINGS UP IN ZONES.  RA ALREADY CHGG TO SHRA W CWA WHICH
SHOULD SPRD E TONGHT...ESPECIALLY WITH MODELS SHOWG JET DYNAMICS
MOVG E OF AREA BY 12Z SAT.  QPF AMOUNTS OM MM5 INDICATE SN ADVY
CRITERIA FOR BLUES TNGHT.  HOWEVER...LOOKS LIKE SN LVLS WONT DROP
TO HIGH PASSES TIL LATE WHEN LESS MSTR AVAIL.  QPF LWR ON OTHER
MODELS SO WILL HOLD OFF ON SN ADVY.  FLO ALOFT SHIFTS TO WLY SAT
WHICH SHOULD DRY YKM VLLY AND COL BASIN.  STILL 700MB UVV IN PROGS
AND UPSLOPE FLO WILL KEEP SCT SHSN IN MTNS.  SN LVLS LWR TO 3KFT
SUN MORN.  EXTDD...DRIER CONDITIONS EXCEPT FOR BR/FG MON-WED.
TEMPS SHOULDNT WARM MUCH WITH EXCEPTD FMR SHOWG MAX TEMPS 10F
BELOW NORM FOR KPDT.  SB

PDT 6332  ALW 6332  PSC 4211  YKM 4211

.PDT...FLOOD WATCH ORE ZONES 17>20.
       FLOOD WATCH WA ZONE 27-29-30.
       SEE ALSO PDXFFSPDT FOR SMALL STREAM FLOOD WARNINGS AND WSFOS
       FLSS FOR MAIN STEM FLOOD WARNINGS.

.KPDT...VCP21/CSR21 OPERATIONAL.

In the hours before

Local storm report, Jan 31, 1:02 PM PST, 2 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
100 PM PST FRI JAN 31 1997

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

0600 AM    1 W PRESCOTT              WA   FLOODING
01/31/97   WALLA WALLA                    WOMAN AND A BABY WERE
                                          WERE STRANDED IN A CAR BY
                                          HIGH WATER AND RESCUED
                                          BY LOCAL FIRE DEPARTMENT.
                                          NO INJURIES.

1031 AM    ADAMS                     OR   FLOODING
01/31/97   UMATILLA                       WILDHORSE CREEK IS
                  N                        FLOODING MAIN STREET.  ONE
                                          HOUSE AND THE LITTLE
                                          LEAGUE PARK ARE FLOODED.

Local storm report, Jan 31, 1:04 PM PST, 2 hours 46 minutes before

PRELIMINARTY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
100 PM PST FRI JAN 31 1997

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

0600 AM    1 W PRESCOTT              WA   FLOODING
01/31/97   WALLA WALLA                    WOMAN AND A BABY
                                          WERE STRANDED IN A CAR BY
                                          HIGH WATER AND RESCUED
                                          BY LOCAL FIRE DEPARTMENT.
                                          NO INJURIES.

1031 AM    ADAMS                     OR   FLOODING
01/31/97   UMATILLA                       WILDHORSE CREEK IS
                  \                        FLOODING MAIN STREET.  ONE
                                          HOUSE AND THE LITTLE
                                          LEAGUE PARK ARE FLOODED.

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	Umatilla, Union, Wallowa	8 hr
Jan 31, 9:34 AM PST	Flash Flood Warning	PDT	Umatilla	4 hr
Jan 31, 9:34 AM PST	Flash Flood Warning	PDT	Union, Wallowa	4 hr
Jan 31, 10:35 AM PST	Flash Flood Warning	PDT	Umatilla, Union, Wallowa	6 hr
Jan 31, 10:35 AM PST	Flash Flood Warning	PDT	Morrow	6 hr
Jan 31, 3:50 PM PST	Flash Flood Warning	PDT	Morrow	4 hr
Jan 30, 9:35 PM PST	Flash Flood Warning	PDT	Walla Walla	8 hr
Jan 31, 10:35 AM PST	Flash Flood Warning	PDT	Columbia, Walla Walla	6 hr
Jan 31, 2:27 PM PST	Flash Flood Warning	PDT	Walla Walla	12 hr

Nearby

Flash Flood Warnings in Oregon, 1997 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.