An upper level trough pushed through Southwest Idaho on the 6th leading to strong thunderstorms including flash flooding and debris flows near McCall and a funnel cloud near Twin Falls.
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The episode as NWS BOI wrote it up.
An upper level trough pushed through Southwest Idaho on the 6th leading to strong thunderstorms including flash flooding and debris flows near McCall and a funnel cloud near Twin Falls.
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 Mar 6, 3:03 AM MST, 4 hours 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE ID 303 AM MST THU MAR 6 2014 .SHORT TERM...TODAY THROUGH FRIDAY...STRONG MID-LEVEL SW WINDS WERE ALLOWING FOR DOWNSLOPE DRYING/WARMING ACROSS THE TREASURE VALLEY WITH TEMPS CURRENTLY RUNNING IN THE 50S-LOW 60S ALONG WITH A LACK OF SHOWERS. THESE SAME WINDS WERE AIDING THE SHOWERS OVER THE HIGHER TERRAIN TO THE NORTH OF THE TREASURE VALLEY DUE TO UPSLOPE FORCING. LATEST RADAR IMAGES WERE SHOWING NUMEROUS SHOWERS ACROSS SOUTHEAST OREGON AND MOST OF SOUTHWEST IDAHO...EXCEPT FOR THE TREASURE VALLEY. SHOWERS WILL INCREASE AS THE AIR MASS DESTABILIZES THROUGH THE DAY. A COLD FRONT WAS SITUATED OVER CENTRAL OREGON. THE FRONT IS PROGGED TO MOVE ACROSS SE OREGON THIS MORNING AND SW IDAHO THIS AFTERNOON. ISOLATED THUNDERSTORMS ARE EXPECTED WITH THE FRONT...AND ALSO WITH THE UPPER TROUGH THIS AFT-EVE DUE TO INSTABILITY WITH THE COLDER AIR ALOFT. LOCALLY HEAVY RAIN AND SMALL HAIL/GRAUPEL WILL BE POSSIBLE WITH THE THUNDERSTORMS. SNOW LEVELS AVERAGING 8000 FEET THIS MORNING WILL FALL TO AROUND 5000 FEET BY LATE THIS AFTERNOON...THEN BOTTOM OUT AT AROUND 4000 FEET EARLY FRIDAY MORNING. RAIN SHOWERS WILL CHANGE TO SNOW SHOWERS IN THE BOISE/WEST CENTRAL MTNS OVERNIGHT WITH LIGHT SNOW ACCUMULATIONS LIKELY ABOVE 4500 FEET. A DRIER NORTHWEST FLOW WILL FOLLOW THE DEPARTING TROUGH AS AN UPPER RIDGE BUILDS INTO THE PACIFIC NORTHWEST. TEMPERATURES WILL TREND DOWN SLIGHTLY COOLER THROUGH THE PERIOD. THE COLD FRONT IS NOT EXPECTED TO BE ACCOMPANIED BY STRONG WINDS...ALTHOUGH WINDS WILL STILL REMAIN GUSTY THROUGH TODAY...ESPECIALLY ON RIDGES AND IN SE OREGON. WINDS WILL BE LIGHTER TONIGHT AND FRIDAY. .LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY...MILD DRY AND SUNNY WEATHER UNDER AN UPPER LEVEL RIDGE FRIDAY NIGHT AND SATURDAY WILL GIVE WAY TO WIDESPREAD PRECIPITATION SATURDAY NIGHT THROUGH SUNDAY NIGHT AS A MOIST PACIFIC WEATHER SYSTEM BRINGS WIDESPREAD PRECIPITATION. THIS WILL BE FOLLOWED BY AN UPPER LEVEL RIDGE BUILDING JUST OFFSHORE...PUTTING OUR AREA UNDER SLIGHTLY COOLER AND MOSTLY DRY NORTHERLY FLOW ALOFT TUESDAY THROUGH WEDNESDAY. BOTH THE GFS AND CANADIAN OPERATIONAL MODELS AS WELL AS THE ECMWF ENSEMBLE MEAN AGREE ON THIS SCENARIO. TEMPERATURES WILL COOL FROM AROUND 5 DEGREES ABOVE NORMAL ON SATURDAY TO NEAR NORMAL FOR THE REMAINDER OF THE PERIOD. && .AVIATION...NUMEROUS SHOWERS WILL CONTINUE OVER THE MOUNTAINS TODAY...WITH SCATTERED SHOWERS AT LOWER ELEVATIONS. ALSO EXPECT ISOLATED THUNDERSTORMS THIS AFTERNOON THROUGH THIS EVENING. CONDITIONS WILL BE MAINLY VFR IN THE VALLEYS...WITH WIDESPREAD TERRAIN OBSCURATION AND AREAS OF MVFR AND LOWER CONDITIONS IN THE MOUNTAINS. EXPECT GRADUAL IMPROVEMENT FROM THE WEST TONIGHT. SURFACE WINDS...SOUTHEAST TO SOUTH 5-15 KTS THIS MORNING BECOMING SOUTHWEST TO NORTHWEST 10-25 KTS THIS AFTERNOON. WINDS ALOFT...WEST UP TO 40 KTS AT 10K FT MSL. && .HYDROLOGY...A MILD AND MOIST SOUTHWEST FLOW THIS MORNING WILL CONTINUE TO DELIVER SHOWERS ACROSS WEST-CENTRAL IDAHO. SNOW LEVELS WILL RUN FROM 6500-7500 FEET AND ALLOW FOR SNOWMELT... ADDING TO THE RUNOFF ON THE LOWER AND MIDDLE SLOPES. A COLD FRONT AND UPPER TROUGH WILL BE ACCOMPANIED BY ISOLATED THUNDERSTORMS THIS AFT-EVE...SOME OF WHICH MAY CONTAIN HEAVY RAINFALL. FOR THESE REASONS...THE FLOOD WATCH WILL REMAIN IN EFFECT THROUGH TONIGHT. SNOW LEVELS WILL START TO LOWER BEHIND THE FRONT THIS AFTERNOON AND FALL TO AROUND 4500 FEET OVERNIGHT. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...FLOOD WATCH THROUGH LATE TONIGHT IDZ011-013-033. OR...NONE. && WEATHER.GOV/BOISE SHORT TERM...BW LONG TERM....JT AVIATION.....JT HYDROLOGY...BW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 459 AM MST THU MAR 6 2014 IDZ011>016-028>030-033-ORZ061>064-071200- 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- 459 AM MST THU MAR 6 2014 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 NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Boise radar (KCBX), 150 km away, was scanning. The volume nearest the first event began at 14:59 UTC.
1 flood, 1 debris flow, 1 funnel cloud. Local standard time, as filed.
Norwood Road was closed at Maki Road due to water overflowing a drainage ditch.
A Forest Service road east of McCall was closed due to debris flow.
A funnel cloud was photographed by a deputy sheriff.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2014Every state in 2014This day in weather historyWarnings in Idaho, March 2014
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: 508644, 508647, 508648.