Flash Flood Watch
Issued by NWS Pendleton, OR

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000
WGUS66 KPDT 220406
FFAPDT

FLOOD WATCH
NATIONAL WEATHER SERVICE PENDLETON OR
906 PM PDT THU MAY 21 2015

...SIGNIFICANT DOWNPOURS WITH THUNDERSTORMS FRIDAY...

.SCATTERED THUNDERSTORMS WILL DEVELOP FRIDAY AFTERNOON ACROSS
EASTERN OREGON AND SOUTHEAST WASHINGTON. THESE STORMS WILL BE SLOW
MOVING AND WILL BRING SIGNIFICANT DOWNPOURS IN SOME LOCATIONS.
FLASH FLOODING OR DEBRIS FLOWS ARE POSSIBLE IN AREAS NEAR STEEP
TERRAIN.

ORZ509-220515-
/O.CAN.KPDT.FF.A.0001.000000T0000Z-150522T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EAST SLOPES OF THE OREGON CASCADES-
INCLUDING THE CITIES OF...CAMP SHERMAN...LA PINE...SISTERS...
SUNRIVER
906 PM PDT THU MAY 21 2015

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR A PORTION OF CENTRAL OREGON HAS BEEN
CANCELLED. THUNDERSTORMS HAVE DECREASED IN INTENSITY AND FLASH
FLOODING IS NO LONGER EXPECTED OVER THE EAST SLOPES OF THE OREGON
CASCADES.

$$

ORZ510-511-220515-
/O.CAN.KPDT.FA.A.0001.000000T0000Z-150522T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NORTH CENTRAL OREGON-CENTRAL OREGON-
INCLUDING THE CITIES OF...DUFUR...MAUPIN...MORO...BEND...MADRAS...
PRINEVILLE...REDMOND
906 PM PDT THU MAY 21 2015

...FLOOD WATCH IS CANCELLED...

THE FLOOD WATCH FOR PORTIONS OF CENTRAL OREGON AND NORTH CENTRAL
OREGON HAS BEEN CANCELLED. THUNDERSTORMS HAVE DECREASED IN
INTENSITY AND FLASH FLOODING IS NO LONGER EXPECTED OVER CENTRAL
AND NORTH CENTRAL OREGON.

$$

ORZ049-050-502-503-505-506-221215-
/O.CON.KPDT.FF.A.0001.000000T0000Z-150523T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-
INCLUDING THE CITIES OF...COVE...ELGIN...LA GRANDE...UNION...
ENTERPRISE...JOSEPH...WALLOWA...MEACHAM...TOLLGATE...LONG CREEK...
NORTH POWDER...UKIAH...DAYVILLE...JOHN DAY...MITCHELL...
MONUMENT...SPRAY...BROTHERS...PAULINA...PRAIRIE CITY...SENECA
906 PM PDT THU MAY 21 2015

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY EVENING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF CENTRAL OREGON AND NORTHEAST OREGON...INCLUDING
  THE FOLLOWING AREAS...IN CENTRAL OREGON...JOHN DAY BASIN AND
  OCHOCO-JOHN DAY HIGHLANDS. IN NORTHEAST OREGON...GRANDE RONDE
  VALLEY...NORTHERN BLUE MOUNTAINS OF OREGON...SOUTHERN BLUE
  MOUNTAINS OF OREGON AND WALLOWA COUNTY.

* THROUGH FRIDAY EVENING

* ALTHOUGH STORMS WILL TAPER OFF OVERNIGHT...ANOTHER ROUND OF
  THUNDERSTORMS BRINGING HEAVY DOWNPOURS IS FORECAST AGAIN ON
  FRIDAY. THESE THUNDERSTORMS WILL BRING HEAVY RAIN OVER MANY
  AREAS THAT RECEIVED HEAVY RAIN TODAY. EXPECT RAINFALL RATES OF
  ONE HALF TO ONE INCH OF RAIN PER HOUR WITH SOME STORMS. THIS
  WILL THREATEN AREAS OF CENTRAL AND NORTHEAST OREGON WITH FLASH
  FLOODING OR DEBRIS FLOWS.

* EXPECT STANDING WATER ALONG ROADWAYS WHERE THUNDERSTORMS
  DEVELOP...ESPECIALLY IN AREAS THAT HAVE POOR DRAINAGE. THE
  MAIN THREAT WILL BE DEBRIS FLOWS IN AREAS OF STEEP TERRAIN.
  SHARP RISES ALONG RIVER AND STREAMS ARE ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

WAZ030-221215-
/O.CON.KPDT.FF.A.0001.000000T0000Z-150523T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NORTHWEST BLUE MOUNTAINS OF WASHINGTON-
INCLUDING THE CITY OF...SKI BLUEWOOD RESORT
906 PM PDT THU MAY 21 2015

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY EVENING...

THE FLASH FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTHEAST WASHINGTON...INCLUDING THE FOLLOWING
  AREA...NORTHWEST BLUE MOUNTAINS OF WASHINGTON.

* THROUGH FRIDAY EVENING

* ALTHOUGH STORMS WILL TAPER OFF OVERNIGHT...ANOTHER ROUND OF
  THUNDERSTORMS BRINGING HEAVY DOWNPOURS IS FORECAST AGAIN ON
  FRIDAY. THESE THUNDERSTORMS WILL BRING HEAVY RAIN AREAS THAT
  RECEIVED HEAVY RAIN TODAY. EXPECT RAINFALL RATES OF ONE HALF TO
  ONE INCH OF RAIN PER HOUR WITH SOME STORMS. THIS WILL THREATEN
  THE NORTHERN BLUE MOUNTAINS WITH FLASH FLOODING OR DEBRIS
  FLOWS.

* EXPECT STANDING WATER ALONG ROADWAYS WHERE THUNDERSTORMS
  DEVELOP...ESPECIALLY IN AREAS THAT HAVE POOR DRAINAGE. THE
  MAIN THREAT WILL BE DEBRIS FLOWS IN AREAS OF STEEP TERRAIN.
  SHARP RISES ALONG RIVER AND STREAMS ARE ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$


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