Flash Flood Watch
Issued by NWS Pendleton, OR

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WGUS66 KPDT 051549
FFAPDT

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE PENDLETON OR
849 AM PDT THU MAY 5 2016

...FLASH FLOODING POTENTIAL OVER THE EASTERN AND NORTHEAST OREGON
MOUNTAINS...

.A MOIST AND UNSTABLE WEATHER SYSTEM ALONG THE COAST IS CAUSING A
SOUTHERLY FLOW WHICH IS BRING INCREASING MOISTURE AND INSTABILITY
TO THE FORECAST AREA. THE BEST CHANCE FOR POSSIBLE FLASH FLOODING
WILL BE FROM THE JOHN DAY HIGHLANDS NORTHEAST ACROSS THE NORTHERN
BLUE MOUNTAINS AND WALLOWA COUNTY. OF PARTICULAR CONCERN IS THE
CANYON CREEK FIRE BURN SCAR FROM LAST SUMMER IN GRANT COUNTY.

ORZ049-050-502-503-505-506-060400-
/O.NEW.KPDT.FF.A.0001.160505T1549Z-160506T0500Z/
/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
849 AM PDT THU MAY 5 2016

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* FLASH FLOOD WATCH 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 THIS EVENING

* STRONG SLOW MOVING THUNDERSTORMS WILL CAUSE HEAVY DOWNPOURS.

* THIS MOST SIGNIFICANT IMPACT WILL BE ON THE CANYON CREEK FIRE
  BURN SCAR FROM LAST SUMMER. ELSEWHERE IN STEEP TERRAIN THERE
  COULD BE WASHOUTS AND/OR MUD AND ROCK SLIDES.

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.

&&

$$

RSC



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