487
WGUS75 KBOI 270125
FFSBOI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
725 PM MDT TUE AUG 26 2025
IDC001-015-039-270330-
/O.CON.KBOI.FF.W.0009.000000T0000Z-250827T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADA ID-BOISE ID-ELMORE ID-
725 PM MDT TUE AUG 26 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MDT THIS
EVENING FOR NORTHEASTERN ADA, SOUTHWESTERN BOISE AND NORTHWESTERN
ELMORE COUNTIES...
AT 725 PM MDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. BETWEEN 2 AND 3.5 INCHES OF RAIN HAVE
FALLEN. THE ESTIMATED RAINFALL RATE IS 1 TO 2 INCHES IN 1 HOUR.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 1.5 INCHES ARE POSSIBLE IN THE
WARNED AREA. FLASH FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY.
HAZARD...FLASH FLOODING CAUSED BY THUNDERSTORMS.
SOURCE...RADAR.
IMPACT...FLASH FLOODING OF SMALL CREEKS AND STREAMS, URBAN AREAS,
HIGHWAYS, STREETS AND UNDERPASSES AS WELL AS OTHER POOR
DRAINAGE AND LOW-LYING AREAS.
SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
LUCKY PEAK SPRING SHORES MARINA, LUCKY PEAK RESERVOIR, ARROWROCK
DAM, LUCKY PEAK DAM, ARROWROCK RESERVOIR, AND THE VALLEY FIRE BURN
SCAR.
HEAVIEST RAIN SO FAR (UP TO 3.25 INCHES) HAS OCCURRED BETWEEN LUCKY
PEAK DAM AND ARROWROCK RESERVOIR. MOVEMENT OF THE THUNDERSTORMS HAS
BEEN NORTHWARD AROUND 10 MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
BE AWARE OF YOUR SURROUNDINGS AND DO NOT DRIVE ON FLOODED ROADS.
AVOID AREAS BELOW STEEP HILLSIDES WHERE ROCKS AND MUD MAY FALL.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
LAT...LON 4367 11590 4354 11589 4348 11597 4350 11605
4357 11607 4363 11605 4369 11599
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
LC
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