Thunderstorms continued across parts of Southeast Idaho on the 8th with strong to severe convection along the Snake River plain.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOI wrote it up.
Thunderstorms continued across parts of Southeast Idaho on the 8th with strong to severe convection along the Snake River plain.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boise, ID wrote its last area forecast discussion before the first event at Aug 8, 1:20 PM MST, 4 hours 50 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
220 PM MDT SUN AUG 8 2010
.SHORT TERM...TONIGHT THROUGH TUESDAY...ISOLATED THUNDERSTORMS THIS
EVENING MAINLY SOUTH AND EAST PORTION OF AREA. LOOKS LIKE A
SIGNIFICANTLY MORE ACTIVE DAY MONDAY AS UPPER TROF FROM NORTHWEST
SAGS SOUTHEAST AND MOISTURE CONTINUES TO STREAM NORTH FROM NEVADA
AND UTAH. HAVE INCREASED CHANCE OF THUNDERSTORMS MOST AREAS MONDAY
AND THIS HAS CAUSED THE FIRE WEATHER WATCH TO BE UPGRADED TO A RED
FLAG WARNING. ON TUESDAY THUNDERSTORMS SHOULD BE CONFINED TO
NORTHERN PORTION OF AREA AS SOME DRYING MOVES IN FROM THE SOUTH.
TEMPERATURES WILL CHANGE LITTLE NEXT FEW DAYS WITH LOWER VALLEYS
REACHING LOWER 90S EACH DAY.
.LONG TERM...TUESDAY NIGHT THROUGH SUNDAY...DEEP UPPER LEVEL TROUGH
WILL DIG SOUTH AND CLOSE OFF OVER OREGON LATE TUESDAY NIGHT. MAIN
EFFECT OF THIS SYSTEM WILL BE COOLER CONDITIONS AND CHANCES OF
SHOWERS/THUNDERSTORMS WEDNESDAY AND THURSDAY. UPPER LOW TO SLOWLY
RETROGRADE TOWARD THE OREGON COAST BY THE END OF THE WEEK - FOR DRY
CONDITIONS AND TEMPERATURES APPROXIMATELY 5 DEGREES F ABOVE NORMAL
ON FRIDAY. SATURDAY/SUNDAY...LOW TO PROGRESS BACK INLAND BUT MODELS
FALTER WITH TIMING AND STRENGTH. FOR NOW...HAVE MAINTAINED THE
PREDOMINANTLY DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES /THROUGH
SUNDAY/ DUE MODEL INCONSISTENCIES.
&&
.AVIATION...ISOLATED SHOWERS AND THUNDERSTORMS ACROSS SW IDAHO
THROUGH 03Z TONIGHT. THUNDERSTORMS MAY PRODUCE MVFR CONDITIONS IN
MODERATE RAIN. KBOI AND KMYL EXPECTED TO REMAIN VFR. ELSEWHERE...VFR
CONDITIONS UNDER MOSTLY SUNNY SKIES. LIGHT SURFACE WINDS - EXCEPT
IN THE VICINITY OF STORMS. LIGHT WESTERLY WINDS ALOFT.
&&
.BOI WATCHES/WARNINGS/ADVISORIES...
ID...RED FLAG WARNING FROM 2PM TO MIDNIGHT MDT MONDAY FOR
IDZ400-401-403-404-408-418-419.
OR...RED FLAG WARNING FROM 1PM 10 11PM PDT MONDAY FOR ORZ636-637.
&&
WEATHER.GOV/BOISE
SHORT TERM...PRF
LONG TERM...MT AND CB
AVIATION...MTHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 605 AM MDT SUN AUG 8 2010 IDZ011>016-028>030-033-ORZ061>064-091215- 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-HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY- LOWER TREASURE VALLEY OR- 605 AM MDT SUN AUG 8 2010 /505 AM PDT SUN AUG 8 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON AND SOUTHEAST OREGON. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS WILL DEVELOP TODAY ALONG THE NEVADA BORDER...AND OVER THE CENTRAL IDAHO MOUNTAINS. THESE STORMS HAVE THE POTENTIAL TO PRODUCT GUSTY WINDS UP TO 50 MPH...ALONG WITH LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED THUNDERSTORMS ON MONDAY...COMBINED WITH WARM TEMPERATURES AND DRY FUELS...HAVE THE POTENTIAL TO CREATE NUMEROUS FIRE STARTS. THUS...A FIRE WEATHER WATCH IS IN EFFECT MONDAY AFTERNOON AND EVENING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 530 PM MDT SUN AUG 8 2010 IDZ015-029-090015- OWYHEE ID- 530 PM MDT SUN AUG 8 2010 THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... CENTRAL OWYHEE COUNTY IN SOUTHWEST IDAHO... UNTIL 615 PM MDT. AT 521 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 37 MILES SOUTH OF SILVER CITY...MOVING NORTH AT 15 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS IMPACTED INCLUDE... SPENCER BUTTE... ALBERT SPRING... CASTRO RANCH... SLACK MOUNTAIN... BIG SPRINGS RANCH... HACKBERRY RESERVOIR... MUD FLAT SPRING... ROUGH MOUNTAIN... AND TRIANGLE. LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. TAKE SHELTER INSIDE A BUILDING OR VEHICLE WHEN THUNDERSTORMS APPROACH. LIGHTNING CAN OCCUR 15 MILES OR MORE AWAY FROM THE CENTER OF A STORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. LAT...LON 4286 11673 4282 11631 4238 11650 4242 11675 TIME...MOT...LOC 2330Z 187DEG 22KT 4254 11660 BW
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 640 PM MDT SUN AUG 8 2010 IDZ012-014-015-029-090130- CANYON ID-ADA ID-ELMORE ID-OWYHEE ID- 640 PM MDT SUN AUG 8 2010 THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... SOUTHWESTERN ADA COUNTY IN SOUTHWEST IDAHO... SOUTHEASTERN CANYON COUNTY IN SOUTHWEST IDAHO... SOUTHWESTERN ELMORE COUNTY IN SOUTHWEST IDAHO... AND NORTHWESTERN OWYHEE COUNTY IN SOUTHWEST IDAHO... UNTIL 730 PM MDT. AT 632 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS NEAR SILVER CITY...MOVING NORTH AT 20 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN. LOCATIONS IMPACTED INCLUDE... TOY PASS... BLACK WARRIOR MOUNTAIN... DELAMAR MINE... SILVER CITY... GUFFEY... MURPHY... AND SWAN FALLS. LAT...LON 4349 11700 4313 11604 4281 11637 4297 11698 TIME...MOT...LOC 0039Z 209DEG 17KT 4299 11666 BW
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
653 PM MDT SUN AUG 08 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0652 PM TSTM WND GST 3 SSE OREANA 43.00N 116.33W
08/08/2010 E40 MPH OWYHEE ID TRAINED SPOTTER
ATLEAST 40 MPH WIND GUSTS WITH THUNDERSTORM OUTFLOW.
&&
JSMITHThe Boise radar (KCBX), 54 km away, was scanning. The volume nearest the first event began at 01:10 UTC.
1 thunderstorm wind. Local standard time, as filed.
A trained spotter near Oreana, Idaho reported wind gusts up to 60 MPH.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2010Every state in 2010This day in weather historyWarnings in Idaho, August 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 258156.