563  
WGUS65 KMSO 251918  
FFAMSO  
 
FLOOD WATCH  
NATIONAL WEATHER SERVICE MISSOULA MT  
118 PM MDT FRI MAY 25 2018  
 
IDZ007-008-260600-  
/O.NEW.KMSO.FF.A.0002.180525T2200Z-180526T0600Z/  
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-  
1218 PM PDT FRI MAY 25 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL 11 PM PDT THIS EVENING
 
 
THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A  
 
* FLASH FLOOD WATCH FOR A PORTION OF CENTRAL IDAHO.  
 
* UNTIL 11 PM PDT THIS EVENING  
 
* AREAS OF CONCERN INCLUDE: GRANGEVILLE, MUNICIPAL FIRE BURN AREA,  
WOODRAT BURN AREA, HIGHWAY 95 FROM RIGGINS TO WHITEBIRD, HIGHWAY  
95 NORTH OF RIGGINS, RIGGINS, AND ROAD TO PITTSBURG LANDING  
 
* STRONG THUNDERSTORMS CAPABLE OF VERY HEAVY RAINFALL WILL DEVELOP  
THIS AFTERNOON AND LAST INTO THE EVENING. RAINFALL AMOUNTS OF UP  
TO .60 INCH IN 30 MINUTES WILL BE POSSIBLE, WHICH COULD CAUSE  
FLASH FLOODING ON QUICK REACTING STREAMS AND CREEKS,  
PARTICULARLY IN RECENT BURN SCAR AREAS.  
 
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.  
 

 
 

 
 
MTZ003-260600-  
/O.CON.KMSO.FA.A.0008.000000T0000Z-180527T2100Z/  
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
FLATHEAD/MISSION VALLEYS-  
118 PM MDT FRI MAY 25 2018  
 
...FLOOD WATCH FOR THE FLATHEAD RIVER AT COLUMBIA FALLS REMAINS  
IN EFFECT UNTIL FURTHER NOTICE...  
 
THE FLOOD WATCH REMAINS IN EFFECT FOR THE FLATHEAD RIVER AT  
COLUMBIA FALLS...  
 
* UNTIL FURTHER NOTICE.  
 
* THE RIVER IS FORECAST TO REACH FLOOD STAGE AND REMAIN THERE  
THROUGH THE WEEKEND. ADDITIONAL RISES ARE LIKELY THEREAFTER.  
 
* WARM TEMPERATURES, ESPECIALLY OVERNIGHT, WILL BE INCREASING  
SNOWMELT RUNOFF AND CONTINUE TO CAUSE HIGH WATER ON AREA RIVERS  
AND STREAMS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON  
CURRENT FORECASTS.  
 
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE  
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE  
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.  
 

 
 
LAT...LON 4817 11422 4818 11416 4818 11414 4816 11412  
4812 11411 4810 11408 4804 11411 4805 11415  
4810 11416 4813 11417 4813 11419 4811 11422  
4813 11426 4818 11430 4823 11427 4825 11426  
4833 11425 4838 11421 4840 11412 4847 11411  
4845 11400 4837 11402 4835 11408 4832 11416  
4828 11418 4825 11418 4822 11422 4818 11423  
 

 
 
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