604  
WGUS65 KBOI 032001  
FFABOI  
 
FLOOD WATCH  
NATIONAL WEATHER SERVICE BOISE ID  
201 PM MDT SUN SEP 3 2023  
 
.ANOTHER ROUND OF HEAVY RAIN IS EXPECTED LATER THIS EVENING AS MORE  
PRECIPITATION MOVES INTO THE REGION. FLASH FLOODING COULD OCCUR WITH  
STRONG STORMS AND CONTINUOUS HEAVY RAIN IN STEEP AND MOUNTAINOUS  
TERRAIN, BURN SCARS, OR URBAN AREAS.  
 
IDZ011>016-028>030-033-ORZ062>064-040400-  
/O.CON.KBOI.FA.A.0006.000000T0000Z-230904T0400Z/  
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS-  
UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY-  
CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY-UPPER  
WEISER RIVER-BAKER COUNTY-MALHEUR COUNTY-OREGON LOWER TREASURE  
VALLEY-  
INCLUDING THE CITIES OF MCCALL, CASCADE, NAMPA, CALDWELL, IDAHO  
CITY, LOWMAN, GARDEN VALLEY, PINE, BOISE, MOUNTAIN HOME,  
GRASMERE, RIDDLE, MURPHY HOT SPRINGS, TWIN FALLS, JEROME,  
FAIRFIELD, SILVER CITY, HOLLISTER, ROGERSON, COUNCIL, CAMBRIDGE,  
MIDVALE, BAKER, MALHEUR CITY, ONTARIO, AND NYSSA  
201 PM MDT SUN SEP 3 2023 /101 PM PDT SUN SEP 3 2023/  
 
...FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM MDT/9 PM PDT/ THIS  
EVENING...  
 
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE  
POSSIBLE.  
 
* WHERE...PORTIONS OF IDAHO, INCLUDING THE FOLLOWING AREAS, BOISE  
MOUNTAINS, CAMAS PRAIRIE, LOWER TREASURE VALLEY ID, OWYHEE  
MOUNTAINS, SOUTHERN TWIN FALLS COUNTY, SOUTHWEST HIGHLANDS, UPPER  
TREASURE VALLEY, UPPER WEISER RIVER, WEST CENTRAL MOUNTAINS AND  
WESTERN MAGIC VALLEY. PORTIONS OF OREGON, INCLUDING THE FOLLOWING  
AREAS, BAKER COUNTY, MALHEUR COUNTY AND OREGON LOWER TREASURE  
VALLEY.  
 
* WHEN...UNTIL 10 PM MDT/9 PM PDT/ THIS EVENING.  
 
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,  
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.  
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS.  
 
* ADDITIONAL DETAILS...  
- THUNDERSTORMS LATE THIS AFTERNOON THROUGH THIS EVENING WILL  
BE CAPABLE OF PRODUCING VERY HEAVY RAINFALL.  
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
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.  
 

 
 

 
 
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