Alert archive / Oregon / Flash Flood Warnings in 1998
Flash Flood Warning 4, NWS Pendleton, OR
NWS Pendleton, OR issued this flash flood warning at Jun 2, 1998, 6:37 PM PDT for Wasco County, Oregon. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 2, 1998, 6:37 PM PDT (01:37 UTC)
- Expired
- Jun 2, 1998, 7:25 PM PDT
- In force
- 48 min
- Issued by
- NWS Pendleton, OR
- Area
- Whole counties
County Wasco County, OR
The radar
The Portland,OR radar (KRTX), 153 km from the middle of the area, began a volume at 01:39 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, 1.6 hours before the alert went out and 146 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
- 9 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 930 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPDT 030137 FFWPDT ORC065-030225- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PENDLETON OR 637 PM PDT TUE JUN 2 1998 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN AND NORTH CENTRAL WASCO COUNTY IN NORTH CENTRAL OREGON * UNTIL 725 PM PDT * AT 630 PM PDT... SPOTTERS INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN THE DALLES. * HEAVY RAIN CAUSED ROCK SLIDE ALONG HILL SIDE DUE TO HEAVY RAIN OF .38 INCHES IN A HALF HOUR. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUI CKLY. MOVE TO HIGHER GROUND. & CLOUTER
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 Jun 2, 2:30 PM PDT, 4 hours 7 minutes earlier.
Area forecast discussion, Jun 2, 2:30 PM PDT, 4 hours 7 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
230 PM PDT TUE JUN 2 1998
UPPER RIDGE IS PERSISTING OFFSHORE WITH SHORT WAVE TROUGH MOVING
DOWN INTO THE COLUMBIA BASIN. THIS HAS KICKED OFF AFEW SHOWERS OVER
THE HORSE HEAVENS HILLS OF WA. LIGHTNING CHARTS SHOW THUNDERSTORMS
DEVELOPING OVER THE BLUE MOUNTAINS IN BOTH WA AND ORE AND THE
WALLOWAS. CLOSED LOW PRESSURE OFF CENTRAL CALIF COAST CONTINUES TO
BRING MOISTURE INTO SOUTHERN OREGON WITH CONVECTION TRYING TO
SPREAD INTO CENTRAL OREGON. THIS PATTERN IS EXPECTED TO CONTINUE
INTO THE END OF THE WEEK WITH WEAK SHORT WAVE MOVING DOWN ALONG
NORTHERLY FLOW ALOFT. MOST UNSTABLE AREA WILL AGAIN BE OVER THE
BLUES AND OTHER MOUNTAINS. ORTHERLY PRESSURE GRADIENT SHOULD KEEP
TEMPERATURE AROUND SEASONAL NORMS THROUGH THE END OF THE WEEK WITH
SLIGHT WARMING. STILL RECEIVING REPORTS OF MINOR FLOODING IN THE
PRINEVILLE AREA AND WILL CONTINUE THE SMALL STREAM FLOOD ADVISORY
THROUGH TONIGHT. NOT MUCH CHANGES IN THE EXTENDED WITH CYCLONIC
FLOW ALOFT PROVIDING SOME INSTABILITY FOR MOUNTAIN SHOWERS OR
THUNDERSTORMS.
FB
PDT 1100 ALW 1100 PSC 1000 YKM 0000
.KPDT-88D...VCP21/CSR21.
.KPDT...SMALL STREAM FLOOD ADVISORY FOR OCHOCO CREEK BELOW THE
OCHOCO RESERVOIR DAM IN THE CITY OF PRINEVILLE TONIGHT...In the hours before
Local storm report, Jun 2, 12:59 PM PDT, 5 hours 38 minutes before
STORM REPORT CORRECTED
NATIONAL WEATHER SERVICE PENDLETON, OR...CORRECTED FOR UNITS
1259 PM PDT TUE JUN 02 1998
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 AM PRINEVILLE OR
05/30/98 CROOK SPOTTER 9 MI NORTH OF
PRINEVILLE REPORTS 7.5
CENTIMETERS OF RAIN IN
THE LAST 48 HOURS.
(2.95 INCHES)
FLOODING ON ALLEN CREEK.
WATER CROSSING ROAD.
(CROOK-16)Local storm report, Jun 2, 12:59 PM PDT, 5 hours 38 minutes before
STORM REPORT CORRECTED
NATIONAL WEATHER SERVICE PENDLETON, OR...CORRECTED FOR UNITS
1259 PM PDT TUE JUN 02 1998
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 AM PRINEVILLE OR
05/30/98 CROOK SPOTTER 9 MI NORTH OF
PRINEVILLE REPORTS 7.5
CENTIMETERS OF RAIN IN
THE LAST 48 HOURS.
(2.95 INCHES)
FLOODING ON ALLEN CREEK.
WATER CROSSING ROAD.
(CROOK-16)Local storm report, Jun 2, 6:09 PM PDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
609 PM PDT TUE JUN 02 1998
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0530 PM CENTERVILLE WA WIND DAMAGE
06/02/98 KLICKITAT FREQUENT THUNDER AND
LIGHTNING WITH QUICK BURST
OF RAIN. NO HAIL AND NO
STRONG WINDS. (SPOTTER
KLICKITAT 4)
0545 PM WISHRAM WA WIND DAMAGE
06/02/98 KLICKITAT BURST OF HEAVY RAIN WITH
LESS THAN PEA SIZE HAIL
AND FREQUENT LIGHTNING.
SPOTTER (KLICKITAT 14H)
0545 PM CLE ELUM WA WIND DAMAGE
06/02/98 KITTITAS RAIN .45 INCHES IN LESS
THAN 1 HOUR WITH FREQUENT
THUNDER AND LIGHTNING. NO
HAIL REPORTED (SPOTTER
KITTITAS 3)
0600 PM ADAMS OR WIND DAMAGE
06/02/98 UMATILLA THUNDERSTORM WITH FREQUENT
LIGHTNING AND GUST OF WIND
TO 35 MPH. ONLY SOME LIGHT
RAIN. (SPOTTER UMATILLA
2H)The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 9:36 PM PDT | Flash Flood Warning | PDT | Grant | 4 hr |
Nearby
Flash Flood Warnings in Oregon, 1998Every flash flood warning in 1998
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.