150  
WGUS65 KBOI 030719  
FFABOI  
 
URGENT - IMMEDIATE BROADCAST REQUESTED  
FLOOD WATCH  
NATIONAL WEATHER SERVICE BOISE ID  
119 AM MDT SUN SEP 3 2023  
 
IDZ011>016-028>030-033-ORZ062>064-032115-  
/O.NEW.KBOI.FA.A.0006.230903T1700Z-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  
119 AM MDT SUN SEP 3 2023 /1219 AM PDT SUN SEP 3 2023/  
 
...FLOOD WATCH IN EFFECT FROM 11 AM MDT /10 AM PDT/ THIS MORNING  
THROUGH THIS EVENING...  
 
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.  
 
* WHERE...SOUTHWEST 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 SOUTHEAST OREGON, INCLUDING THE  
FOLLOWING AREAS, BAKER COUNTY, MALHEUR COUNTY AND OREGON LOWER  
TREASURE VALLEY.  
 
* WHEN...FROM 11 AM MDT /10 AM PDT/ THIS MORNING THROUGH 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 MORNING 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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