971
WWUS75 KBOI 212210
NPWBOI
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOISE ID
410 PM MDT FRI AUG 21 2026
IDZ016-ORZ064-220400-
/O.EXA.KBOI.WI.Y.0012.260822T0000Z-260822T0400Z/
/O.CON.KBOI.HT.Y.0007.000000T0000Z-260822T0300Z/
WESTERN MAGIC VALLEY-OREGON LOWER TREASURE VALLEY-
INCLUDING THE CITIES OF NYSSA, ONTARIO, AND TWIN FALLS
410 PM MDT FRI AUG 21 2026 /310 PM PDT FRI AUG 21 2026/
..WIND ADVISORY IN EFFECT UNTIL 10 PM MDT /9 PM PDT/ THIS EVENING
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT /8 PM PDT/ THIS
EVENING...
* WHAT...FOR THE HEAT ADVISORY, TEMPERATURES UP TO 96. FOR THE WIND
ADVISORY, IN THE WESTERN MAGIC VALLEY SOUTHWEST WINDS 25 TO 35 MPH
WITH GUSTS UP TO 55 MPH EXPECTED. FOR THE WIND ADVISORY, IN THE
LOWER TREASURE VALLEY, SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS UP
TO 55 MPH EXPECTED.
* WHERE...IN IDAHO, WESTERN MAGIC VALLEY. IN OREGON, OREGON LOWER
TREASURE VALLEY.
* WHEN...FOR THE HEAT ADVISORY, UNTIL 9 PM MDT /8 PM PDT/ THIS
EVENING. FOR THE WIND ADVISORY, UNTIL 10 PM MDT /9 PM PDT/ THIS
EVENING.
* IMPACTS...GUSTY WINDS WILL BLOW AROUND UNSECURED OBJECTS. TREE
LIMBS COULD BE BLOWN DOWN AND A FEW POWER OUTAGES MAY RESULT. HOT
TEMPERATURES MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...STRONG GUSTS FROM THE SOUTH AND SOUTHWEST WILL
CREATE AREAS OF BLOWING DUST AND VISIBILITY AS LOW AS ONE MILE,
ADVANCING NORTHWARD THROUGH THE AREA, WITH GREATEST IMPACTS BETWEEN
630 PM AND 900 PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT, ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
IDZ030-220400-
/O.EXA.KBOI.WI.Y.0012.260822T0000Z-260822T0400Z/
SOUTHERN TWIN FALLS COUNTY-
INCLUDING THE CITIES OF ROGERSON AND HOLLISTER
410 PM MDT FRI AUG 21 2026
..WIND ADVISORY IN EFFECT UNTIL 10 PM MDT THIS EVENING
* WHAT...SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS UP TO 55 MPH
EXPECTED.
* WHERE...SOUTHERN TWIN FALLS COUNTY.
* WHEN...UNTIL 10 PM MDT THIS EVENING.
* IMPACTS...GUSTY WINDS WILL BLOW AROUND UNSECURED OBJECTS. TREE
LIMBS COULD BE BLOWN DOWN AND A FEW POWER OUTAGES MAY RESULT.
* ADDITIONAL DETAILS...STRONG GUSTS FROM THE SOUTH AND SOUTHWEST WILL
CREATE AREAS OF BLOWING DUST AND VISIBILITY AS LOW AS ONE MILE,
ADVANCING NORTHWARD THROUGH THE AREA, WITH GREATEST IMPACTS BETWEEN
630 PM AND 900 PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT, ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.
IDZ012-014-220400-
/O.CON.KBOI.HT.Y.0007.000000T0000Z-260822T0300Z/
/O.CON.KBOI.WI.Y.0012.260822T0000Z-260822T0400Z/
LOWER TREASURE VALLEY-UPPER TREASURE VALLEY-
INCLUDING THE CITIES OF NAMPA, BOISE, AND CALDWELL
410 PM MDT FRI AUG 21 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
..WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING
* WHAT...FOR THE HEAT ADVISORY, TEMPERATURES UP TO 98. FOR THE WIND
ADVISORY, SOUTH WINDS 20 TO 30 MPH WITH GUSTS UP TO 55 MPH
EXPECTED.
* WHERE...LOWER TREASURE VALLEY AND UPPER TREASURE VALLEY.
* WHEN...FOR THE HEAT ADVISORY, UNTIL 9 PM MDT THIS EVENING. FOR THE
WIND ADVISORY, UNTIL 10 PM MDT THIS EVENING.
* IMPACTS...GUSTY WINDS WILL BLOW AROUND UNSECURED OBJECTS. TREE
LIMBS COULD BE BLOWN DOWN AND A FEW POWER OUTAGES MAY RESULT. HOT
TEMPERATURES MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...STRONG GUSTS FROM THE SOUTH AND SOUTHWEST WILL
CREATE AREAS OF BLOWING DUST AND VISIBILITY AS LOW AS ONE MILE,
ADVANCING NORTHWARD THROUGH THE AREA, WITH GREATEST IMPACTS BETWEEN
630 PM AND 900 PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT, ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
IDZ033-220300-
/O.CON.KBOI.HT.Y.0007.000000T0000Z-260822T0300Z/
UPPER WEISER RIVER-
INCLUDING THE CITIES OF INDIAN VALLEY, CAMBRIDGE, GOODRICH,
FRUITVALE, COUNCIL, GLENDALE, AND MESA
410 PM MDT FRI AUG 21 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
* WHAT...TEMPERATURES UP TO 97.
* WHERE...UPPER WEISER RIVER.
* WHEN...UNTIL 9 PM MDT THIS EVENING.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
IDZ015-029-220400-
/O.CON.KBOI.WI.Y.0012.260822T0000Z-260822T0400Z/
SOUTHWEST HIGHLANDS-OWYHEE MOUNTAINS-
INCLUDING THE CITIES OF MURPHY HOT SPRINGS, GRASMERE, THREE CREEK,
SILVER CITY, RIDDLE, AND REYNOLDS
410 PM MDT FRI AUG 21 2026
..WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING
* WHAT...SOUTH WINDS 25 TO 35 MPH WITH GUSTS UP TO 55 MPH EXPECTED.
* WHERE...OWYHEE MOUNTAINS AND SOUTHWEST HIGHLANDS.
* WHEN...UNTIL 10 PM MDT THIS EVENING.
* IMPACTS...GUSTY WINDS WILL BLOW AROUND UNSECURED OBJECTS. TREE
LIMBS COULD BE BLOWN DOWN AND A FEW POWER OUTAGES MAY RESULT.
* ADDITIONAL DETAILS...STRONG GUSTS FROM THE SOUTH AND SOUTHWEST WILL
CREATE AREAS OF BLOWING DUST AND VISIBILITY AS LOW AS ONE MILE,
ADVANCING NORTHWARD THROUGH THE AREA, WITH GREATEST IMPACTS BETWEEN
630 PM AND 900 PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT, ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.
JDS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page