An avalanche occurred on the 1st at around 10 AM MST in Ketchum. Warm Springs road was closed between Gates Road and Jane Lane by 11 AM.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 PIH wrote it up.
An avalanche occurred on the 1st at around 10 AM MST in Ketchum. Warm Springs road was closed between Gates Road and Jane Lane by 11 AM.
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 Pocatello, ID wrote its last area forecast discussion before the first event at Mar 1, 3:50 AM MST, 6 hours 10 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 350 AM MST Wed Mar 1 2023 .SHORT TERM...TODAY THROUGH THURSDAY NIGHT... Well, it's been a rough few days with multiple rounds of snow and strong gusty winds wreaking havoc with trying to keep area highways open and clear of drifting, and multiple roads remain closed early this AM. The good news is a break is on our doorstep! Expect ongoing snowfall to gradually taper off this morning for most areas (perhaps lingering into the afternoon down closer to the UT border), with winds decreasing as well between 5 AM and 9 AM, by which point speeds should be 10 MPH or less and gusts less than 20 MPH everywhere outside of localized terrain-induced trouble spots. For now we keep the Winter Weather Advisory going across the srn Central Mntns and srn highlands until 9 AM as the final batch of ongoing snow continues, and we have also issued a Special Weather Statement from the Arco Desert and Idaho Falls north and east as road conditions remain quite slick for the AM commute along with those highway closures. Expect breaks in the clouds by late this afternoon, and dry conditions tonight into Thu with generally light winds, as a transient shortwave ridge of high pressure passes overhead. Depending on how much clearing occurs early Thu AM, both very cold temps (single digits above/below zero everywhere outside of the ern Magic Valley/Raft River region/lower Snake Plain) and freezing fog will be possible. Guidance is currently split on fog development, with the NBM leaning drier yet the HRRR showing a decent signal for areas of development from the Arco Desert and Snake Plain down into valleys across the srn/ern highlands. We will continue to monitor this potential...any low stratus may keep the sfc warmer and take the edge off fog, but plenty of snow cover could also drive sfc cooling. The Thu-centric break, however, will be short-lived as an active wx pattern is expected to resume by Thu night, as another shortwave trough brings our next round of snow and wind. Continued good news for mntn water supply...continued headaches for our transportation partners. 01 .LONG TERM...FRIDAY THROUGH NEXT WEDNESDAY... A low pressure trough is expected to shear east along the Canadian border early in the period bringing gusty winds and a continuing threat of snowfall favoring the western facing upslope regions of the CNTRL and ERN mountains through the day Friday. Some relief is likely Friday night and early Saturday as a short- wave ridge builds into the region ahead of the next incoming Pacific low which will take shape off the NW coast Saturday. As the low spins up off the NW coast, associated moisture will rotate into the region Saturday afternoon with periods of enhanced snowfall Sunday through Tuesday as ejecting short-wave energy passes through the region. We may see a lull in the active snow pattern Wednesday as reinforcing Pacific energy drops into the WRN periphery of the weakened low but the probabilities are relatively low given the variability in the position of the low. Temperatures continue to run well below normal throughout the long term period. Huston && .AVIATION... Early morning satellite imagery was showing a low pressure trough digging SSE through California with associated clouds and snow rotating NE into SE Idaho. Radar imagery was showing a broad plume of snow extending from KTWF NE through KRXE with associated IFR/MVFR CIGS and VSBY in -SN. Numerical models suggest that this plume of moisture will sag SE through Wednesday morning as the low continues to dig SE into SRN California. Some drying may be anticipated as the low and associated moisture plume dig SE of the region by about 00z this evening. However, the NRN branch of the trough does not clear the region until after 09z tonight and thus SCT -SHSN and areas of MVFR/IFR CIGS may linger into the morning hours. Huston && .PIH WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory until 9 AM MST this morning for IDZ056- 057-059-060-068-073>075. &&
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE POCATELLO ID
642 AM MST WED MAR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0415 PM NON-TSTM WND GST 8 ESE BERENICE 43.81N 112.84W
02/26/2023 M46 MPH BUTTE ID DEPT OF HIGHWAYS
JUNCTION OF 33/22.
0510 PM NON-TSTM WND GST 12 E HOWE 43.78N 112.76W
02/26/2023 M48 MPH BUTTE ID MESONET
MESONET STATION SAN SAND DUNES.
0530 PM NON-TSTM WND GST 11 WSW MONTEVIEW 43.86N 112.73W
02/26/2023 M47 MPH BUTTE ID MESONET
MESONET STATION LOF INL SPECIFIC
MANUFACTURING.
0600 PM SNOW 4 W VICTOR 43.61N 111.19W
02/26/2023 M3.0 INCH TETON ID TRAINED SPOTTER
3.0 INCHES OF SNOW SO FAR TODAY.
0605 PM NON-TSTM WND GST 9 SSW MUD LAKE 43.72N 112.53W
02/26/2023 M49 MPH JEFFERSON ID MESONET
MESONET STATION ROV.
0620 PM NON-TSTM WND GST 9 E BUTTE CITY 43.62N 113.06W
02/26/2023 M47 MPH BUTTE ID MESONET
MESONET STATION DEA DEAD MAN CANYON.
0630 PM NON-TSTM WND GST 7 S HOWE 43.68N 113.01W
02/26/2023 M46 MPH BUTTE ID MESONET
MESONET STATION BAS BASE OF HOWE PEAK.
0654 PM SNOW ISLAND PARK 44.43N 111.37W
02/26/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
US-20 IS CLOSED FROM ASHTON NORTH TO THE
MONTANA STATE LINE DUE TO BLOWING AND
DRIFTING SNOW AND REDUCED VISIBILITY.
0657 PM SNOW 12 NNW MACKS INN 44.67N 111.40W
02/26/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-87 IS CLOSED FROM US-20 NORTH TO THE
MONTANA STATE LINE DUE TO BLOWING AND
DRIFTING SNOW AND REDUCED VISIBILITY.
0732 PM SNOW 5 SSE SQUIRREL 43.97N 111.25W
02/26/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-32 IS CLOSED FROM ASHTON TO TETONIA DUE
TO BLOWING AND DRIFTING SNOW AND REDUCED
VISIBILITY.
0852 PM SNOW 1 NNE CLEMENTSVILLE 43.88N 111.36W
02/26/2023 U0.0 INCH TETON ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-33 IS CLOSED FROM NEWDALE TO TETONIA DUE
TO BLOWING AND DRIFTING SNOW AND REDUCED
VISIBILITY.
0935 PM NON-TSTM WND GST 9 SSW MUD LAKE 43.72N 112.53W
02/26/2023 M51 MPH JEFFERSON ID MESONET
MESONET STATION ROV.
1025 PM NON-TSTM WND GST 1 NE TERRETON 43.84N 112.42W
02/26/2023 M45 MPH JEFFERSON ID MESONET
MESONET STATION TER 1 NE TERRETON.
1100 PM NON-TSTM WND GST 1 WSW POPLAR 43.61N 111.71W
02/26/2023 M46 MPH BONNEVILLE ID DEPT OF HIGHWAYS
1115 PM NON-TSTM WND GST 1 NE CLEMENTSVILLE 43.88N 111.36W
02/26/2023 M47 MPH TETON ID DEPT OF HIGHWAYS
BOTTS STATION.
1145 PM NON-TSTM WND GST 6 NW ATOMIC CITY 43.51N 112.89W
02/26/2023 M47 MPH BUTTE ID DEPT OF HIGHWAYS
0600 AM SNOW DOWNEY 42.43N 112.13W
02/27/2023 M4.2 INCH BANNOCK ID CO-OP OBSERVER
CO-OP OBSERVER STATION DWYI1 DOWNEY.
0700 AM SNOW SODA SPRINGS 42.66N 111.59W
02/27/2023 M8.0 INCH CARIBOU ID COCORAHS
COCORAHS STATION ID-CR-1 SODA SPRINGS.
0700 AM SNOW 1 W PRESTON 42.10N 111.89W
02/27/2023 M4.0 INCH FRANKLIN ID COCORAHS
COCORAHS STATION ID-FK-2 PRESTON 0.6 W.
0700 AM SNOW 5 N INKOM 42.88N 112.23W
02/27/2023 M3.9 INCH BANNOCK ID COCORAHS
COCORAHS STATION ID-BK-27 INKOM 5.5 N.
0700 AM SNOW 4 NNE HOLBROOK 42.22N 112.64W
02/27/2023 M3.8 INCH ONEIDA ID COCORAHS
COCORAHS STATION ID-ON-1 3 NNE HOLBROOK.
0700 AM SNOW STANLEY 44.22N 114.93W
02/27/2023 M2.8 INCH CUSTER ID CO-OP OBSERVER
CO-OP OBSERVER STATION STAI1 STANLEY.
0700 AM SNOW 4 E ST. CHARLES 42.12N 111.31W
02/27/2023 M2.0 INCH BEAR LAKE ID CO-OP OBSERVER
CO-OP OBSERVER STATION LFTI1 3.9 E ST.
CHARLES.
0730 AM SNOW 3 WNW HEGLAR 42.49N 113.20W
02/27/2023 M3.0 INCH CASSIA ID COCORAHS
COCORAHS STATION ID-CS-3 MALTA 15.2 NE.
0745 AM SNOW 3 NNW LAVA HOT SPRINGS 42.66N 112.02W
02/27/2023 M4.0 INCH BANNOCK ID COCORAHS
COCORAHS STATION ID-BK-26 LAVA HOT SPRINGS
2.9 NNW.
0800 AM SNOW BERN 42.34N 111.39W
02/27/2023 M6.0 INCH BEAR LAKE ID CO-OP OBSERVER
CO-OP OBSERVER STATION BERI1 BERN.
0800 AM SNOW INKOM 42.80N 112.26W
02/27/2023 M5.0 INCH BANNOCK ID CO-OP OBSERVER
CO-OP OBSERVER STATION IKMI1 INKOM 1 NW.
0800 AM SNOW 2 E SWAN VALLEY 43.44N 111.28W
02/27/2023 M2.0 INCH BONNEVILLE ID CO-OP OBSERVER
CO-OP OBSERVER STATION SWNI1 SWAN VALLEY.
0800 AM SNOW 4 ESE AMERICAN FALLS 42.77N 112.79W
02/27/2023 M1.2 INCH POWER ID COCORAHS
COCORAHS STATION ID-PW-4 4 ESE AMERICAN
FALLS.
0429 PM SNOW 7 SW NEELEY 42.67N 113.00W
02/27/2023 E7.0 INCH POWER ID PUBLIC
SNOWFALL TODAY IN THE MASSACRE ROCKS AREA.
0455 PM SNOW 5 SSW ARBON VALLEY 42.82N 112.62W
02/27/2023 E6.0 INCH POWER ID PUBLIC
FELL WITH HEAEY BAND OF SNOW THIS AFTERNOON.
0533 PM SNOW 1 SW GOSHEN 43.31N 112.09W
02/27/2023 M6.0 INCH BINGHAM ID PUBLIC
SNOWFALL TODAY. SNOW RATES WERE AROUND 2
INCHES PER HOUR DURING THE HEAVIEST SNOW.
0656 PM SNOW PRESTON 42.10N 111.88W
02/27/2023 E6.0 INCH FRANKLIN ID PUBLIC
PUBLIC ESTIMATES OF 5 TO 7 INCHES OF NEW
SNOW IN THE PRESTON AREA.
0932 PM NON-TSTM WND GST 17 WSW MARION 42.17N 114.20W
02/27/2023 M55 MPH CASSIA ID MESONET
MESONET STATION CRII1 COTTON RIDGE.
1031 PM SNOW 7 NE MINK CREEK 42.31N 111.63W
02/27/2023 U0.0 INCH FRANKLIN ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-36 CLOSED FROM THE ID-34 JUNCTION EAST TO
OVID DUE TO DRIFTING SNOW AND NARROWING
ROAD.
1050 PM NON-TSTM WND GST 11 WSW ATOMIC CITY 43.40N 113.02W
02/27/2023 M47 MPH BUTTE ID MESONET
MESONET STATION SUM BIG SOUTHERN BUTTE.
1127 PM NON-TSTM WND GST POCATELLO AIRPORT 42.92N 112.57W
02/27/2023 M55 MPH POWER ID ASOS
POCATELLO REGIONAL AIRPORT. VISIBILITY 1/2
MILE WITH BAND OF SNOW PUSHING THROUGH.
1219 AM NON-TSTM WND GST 2 NW IDAHO FALLS 43.52N 112.07W
02/28/2023 M47 MPH BONNEVILLE ID ASOS
ASOS STATION KIDA IDAHO FALLS REGIONAL
AIRPORT.
0300 AM NON-TSTM WND GST FRANKLIN 42.01N 111.81W
02/28/2023 M45 MPH FRANKLIN ID DEPT OF HIGHWAYS
FRANKLIN ITD.
0358 AM SNOW 4 NW CRATERS OF MOON 43.46N 113.58W
02/28/2023 U0.0 INCH BUTTE ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
US-26 CLOSED FROM CAREY TO ARCO.
0408 AM SNOW 4 ESE DRUMMOND 43.97N 111.27W
02/28/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-32 REMAINS CLOSED FROM ASHTON TO TETONIA
DUE TO BLOWING AND DRIFTING SNOW AND REDUCED
VISIBILITY. CLOSURE BEGAN AROUND 730 PM
SUNDAY 02/26.
0500 AM SNOW POCATELLO AIRPORT 42.90N 112.59W
02/28/2023 M4.3 INCH POWER ID OFFICIAL NWS OBS
LAST 18 HOURS AT NWS POCATELLO. 1.5 INCHES
OF THIS ACCUMULATION FELL IN LESS THAN 2
HOURS WITH OVERNIGHT SNOW BAND, ALONG WITH
WINDS GUSTING AS HIGH AS 55 MPH AND 1/2 MILE
VISIBILITY.
0600 AM SNOW MONTPELIER 42.32N 111.30W
02/28/2023 M7.0 INCH BEAR LAKE ID PUBLIC
7 INCHES OF NEW SNOW OVER THE PAST 12 HOURS
IN MONTPELIER AS OF 600 AM. REPORT AND PHOTO
OF MEASUREMENT SUBMITTED VIA NWS POCATELLO
FACEBOOK PAGE.
0600 AM SNOW DOWNEY 42.43N 112.13W
02/28/2023 M4.5 INCH BANNOCK ID CO-OP OBSERVER
CO-OP OBSERVER STATION DWYI1 DOWNEY.
0600 AM SNOW PAUL 42.61N 113.79W
02/28/2023 M2.2 INCH MINIDOKA ID COCORAHS
COCORAHS STATION ID-MN-3. NEW SNOW LAST 24
HOURS.
0640 AM SNOW 3 NNW LAVA HOT SPRINGS 42.66N 112.02W
02/28/2023 M8.0 INCH BANNOCK ID COCORAHS
COCORAHS STATION ID-BK-26. NEW SNOW LAST 24
HOURS.
0700 AM SNOW SODA SPRINGS 42.66N 111.59W
02/28/2023 M9.0 INCH CARIBOU ID COCORAHS
COCORAHS STATION ID-CR-1 SODA SPRINGS.
0700 AM HEAVY SNOW 4 W VICTOR 43.61N 111.19W
02/28/2023 M7.5 INCH TETON ID TRAINED SPOTTER
24 HR TOTAL.
0700 AM SNOW 1 W PRESTON 42.10N 111.89W
02/28/2023 M7.0 INCH FRANKLIN ID COCORAHS
COCORAHS STATION ID-FK-2 PRESTON 0.6 W.
0700 AM SNOW 5 N INKOM 42.88N 112.23W
02/28/2023 M4.8 INCH BANNOCK ID COCORAHS
COCORAHS STATION ID-BK-27 INKOM 5.5 N.
0700 AM SNOW MOORE 43.73N 113.37W
02/28/2023 M4.8 INCH BUTTE ID COCORAHS
COCORAHS STATION ID-BT-3 MOORE 0.1 W.
0700 AM SNOW 4 NNE HOLBROOK 42.22N 112.64W
02/28/2023 M4.2 INCH ONEIDA ID COCORAHS
COCORAHS STATION ID-ON-1 3 NNE HOLBROOK.
0700 AM SNOW STANLEY 44.22N 114.93W
02/28/2023 M4.2 INCH CUSTER ID CO-OP OBSERVER
CO-OP OBSERVER STATION STAI1 STANLEY.
0700 AM SNOW 1 WNW HAILEY 43.52N 114.32W
02/28/2023 M3.2 INCH BLAINE ID COCORAHS
COCORAHS STATION ID-BN-6 HAILEY 1.0 WNW.
0700 AM SNOW 2 SE CHUBBUCK 42.90N 112.43W
02/28/2023 M3.0 INCH BANNOCK ID COCORAHS
COCORAHS STATION ID-BK-16 POCATELLO 2.5 NE.
0700 AM SNOW 1 S IDAHO FALLS 43.48N 112.04W
02/28/2023 M3.0 INCH BONNEVILLE ID COCORAHS
COCORAHS STATION ID-BV-11 IDAHO FALLS 1.2 S.
0700 AM SNOW 4 E ST. CHARLES 42.12N 111.31W
02/28/2023 M3.0 INCH BEAR LAKE ID CO-OP OBSERVER
CO-OP OBSERVER STATION LFTI1 3.9 E ST.
CHARLES.
0700 AM SNOW 2 SW SUN VALLEY 43.66N 114.35W
02/28/2023 M2.7 INCH BLAINE ID COCORAHS
COCORAHS STATION ID-BN-7 KETCHUM 2.2 SSE.
0700 AM SNOW BELLEVUE 43.46N 114.26W
02/28/2023 M2.5 INCH BLAINE ID COCORAHS
COCORAHS STATION ID-BN-3 BELLEVUE.
0700 AM SNOW 4 ENE UCON 43.62N 111.88W
02/28/2023 M2.4 INCH BONNEVILLE ID COCORAHS
COCORAHS STATION ID-BV-6 4 ENE UCON.
0711 AM SNOW 2 SSW WARM RIVER 44.09N 111.34W
02/28/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-47 CLOSED FROM JUST EAST OF ASHTON TO
BEAR GULCH DUE TO BLOWING SNOW AND LOW
VISIBILITY.
0730 AM SNOW 3 WNW HEGLAR 42.49N 113.20W
02/28/2023 M2.0 INCH CASSIA ID COCORAHS
COCORAHS STATION ID-CS-3 MALTA 15.2 NE.
0759 AM SNOW 10 ESE POPLAR 43.54N 111.52W
02/28/2023 U0.0 INCH BONNEVILLE ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
US-26 CLOSED TO ALL TRAFFIC FROM MILE MARKER
355 TO MILE MARKER 377 IN SWAN VALLEY DUE TO
WINTER WEATHER.
0800 AM SNOW BERN 42.34N 111.39W
02/28/2023 M8.0 INCH BEAR LAKE ID CO-OP OBSERVER
CO-OP OBSERVER STATION BERI1 BERN.
0800 AM SNOW 2 E SWAN VALLEY 43.44N 111.28W
02/28/2023 M4.0 INCH BONNEVILLE ID CO-OP OBSERVER
CO-OP OBSERVER STATION SWNI1 SWAN VALLEY.
0800 AM SNOW 4 NNE MENAN 43.77N 111.96W
02/28/2023 M2.5 INCH MADISON ID CO-OP OBSERVER
CO-OP OBSERVER STATION MEAI1 MENAN 4 NNE.
0834 AM SNOW 13 W OSGOOD 43.54N 112.35W
02/28/2023 U0.0 INCH BONNEVILLE ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
US-20 CLOSED TO ALL TRAFFIC FROM MILE MARKER
273 TO MILE MARKER 305 WEST OF IDAHO FALLS
DUE TO WINTER WEATHER.
0900 AM SNOW 2 S SUGAR CITY 43.85N 111.75W
02/28/2023 M2.6 INCH MADISON ID COCORAHS
COCORAHS STATION ID-MD-5 SUGAR CITY 1.9 S.
0903 AM SNOW 9 WNW SWAN VALLEY 43.51N 111.47W
02/28/2023 U0.0 INCH BONNEVILLE ID LAW ENFORCEMENT
*** 4 INJ ***
IDAHO STATE POLICE REPORT WHITEOUT
CONDITIONS, VERY SLICK ROADS, AND MULTIPLE
VEHICLE CRASHES BETWEEN SWAN VALLEY AND
ANTELOPE FLATS. US-26 REMAINS CLOSED. A
VEHICLE CRASH INVOLVING AN ITD SNOW PLOW,
ISP PATROL CAR, AND TWO OTHER VEHICLES NEAR
THE INTERSECTION OF US-26 AND ANTELOPE CREEK
RD RESULTED IN AT LEAST 4 MINOR INJURIES PER
IDAHO STATE JOURNAL.
0925 AM NON-TSTM WND GST ATOMIC CITY 43.44N 112.81W
02/28/2023 M45 MPH BINGHAM ID MESONET
MESONET STATION ATO ATOMIC CITY.
0945 AM NON-TSTM WND GST 6 NW ATOMIC CITY 43.51N 112.89W
02/28/2023 M50 MPH BUTTE ID DEPT OF HIGHWAYS
INL PUZZLE.
1015 AM NON-TSTM WND GST 11 SE POPLAR 43.53N 111.50W
02/28/2023 M46 MPH BONNEVILLE ID DEPT OF HIGHWAYS
ANTELOPE FLATS.
1020 AM NON-TSTM WND GST 13 NE ATOMIC CITY 43.59N 112.65W
02/28/2023 M45 MPH BINGHAM ID MESONET
MESONET STATION EBR INL MATERIALS FUELS
COMPLEX.
1115 AM NON-TSTM WND GST 1 WSW POPLAR 43.61N 111.71W
02/28/2023 M46 MPH BONNEVILLE ID DEPT OF HIGHWAYS
RIRIE ITD SITE.
1140 AM NON-TSTM WND GST 9 SSW MUD LAKE 43.72N 112.53W
02/28/2023 M45 MPH JEFFERSON ID MESONET
MESONET STATION ROV 9 SSW MUD LAKE.
0249 PM SNOW 1 NE CLEMENTSVILLE 43.88N 111.36W
02/28/2023 U0.0 INCH TETON ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-33 CLOSED TO ALL TRAFFIC FROM NEWDALE TO
TETONIA DUE TO BLOWING AND DRIFTING SNOW AND
REDUCED VISIBILITY. IDAHO STATE POLICE
REPORT 6 FOOT SNOW DRIFTS ACROSS THE HIGHWAY
VIA TWITTER.
0350 PM SNOW ROBERTS 43.72N 112.13W
02/28/2023 U0.0 INCH JEFFERSON ID NEWSPAPER
EAST IDAHO NEWS REPORTS RESIDENTS IN ROBERTS
AND THE SURROUNDING AREA ADVISED TO SHELTER
IN PLACE UNTIL FURTHER NOTICE DUE TO BLOWING
AND DRIFTING SNOW. MULTIPLE DRIVERS STRANDED
ACROSS THE AREA. JEFFERSON COUNTY PULLING
PLOWS OFF THE ROADS.
0357 PM SNOW 2 N MACKS INN 44.52N 111.33W
02/28/2023 M12.0 INCH FREMONT ID TRAINED SPOTTER
SNOW TOTAL BETWEEN 1130AM MONDAY AND 230PM
TODAY. CURRENTLY SNOWING WITH GUSTY WINDS
AND 1/4 MILE VISIBILITY.
0416 PM SNOW ISLAND PARK 44.42N 111.37W
02/28/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
US-20 CLOSED TO ALL TRAFFIC FROM ASHTON
NORTH TO THE MONTANA STATE LINE DUE TO
WINTER WEATHER.
0418 PM SNOW 13 NNW MACKS INN 44.67N 111.41W
02/28/2023 U0.0 INCH FREMONT ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS
ID-87 CLOSED TO ALL TRAFFIC FROM US-20 NORTH
TO THE MONTANA STATE LINE DUE TO WINTER
WEATHER.
0500 PM SNOW 2 NE IDAHO FALLS 43.51N 112.01W
02/28/2023 M2.5 INCH BONNEVILLE ID CO-OP OBSERVER
COOP OBSERVER STATION IFLI1. NEW SNOW PAST
24 HOURS.
0210 AM SNOW 5 S NEELEY 42.66N 112.88W
03/01/2023 U0.0 INCH POWER ID DEPT OF HIGHWAYS
IDAHO TRANSPORTATION DEPARTMENT REPORTS SNOW
DRIFTS TO 4 FEET ACROSS ID-37 BETWEEN
AMERICAN FALLS AND ROCKLAND.
0339 AM NON-TSTM WND GST 9 W BLACK PINE 42.04N 113.15W
03/01/2023 M49 MPH CASSIA ID MESONET
MESONET STATION MOFI1 MOBURG CANYON.
0500 AM SNOW 1 SSE POCATELLO AIRPORT 42.90N 112.59W
03/01/2023 M5.7 INCH POWER ID OFFICIAL NWS OBS
EVENT TOTAL SO FAR SINCE 02/26 AT NWS
POCATELLO.
0600 AM SNOW PAUL 42.61N 113.79W
03/01/2023 M1.5 INCH MINIDOKA ID COCORAHS
COCORAHS STATION ID-MN-3. NEW SNOW PAST 24
HOURS.
&&
KSMITHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
817 AM MST WED MAR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW BELLEVUE 43.47N 114.26W
03/01/2023 M3.0 INCH BLAINE ID CO-OP OBSERVER
SINCE 1000 PM LAST NIGHT. STILL SNOWING.
STATION ELEVATION: 5190 FT.
&&
JAMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
819 AM MST WED MAR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY SNOW 2 NNW HAILEY 43.54N 114.32W
03/01/2023 M7.0 INCH BLAINE ID TRAINED SPOTTER
OVERNIGHT TOTAL. STILL SNOWING. STATION
ELEVATION: 5388 FT.
&&
JAMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
820 AM MST WED MAR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY SNOW 2 NNW HAILEY 43.54N 114.32W
03/01/2023 M12.0 INCH BLAINE ID TRAINED SPOTTER
SINCE 27 FEBRUARY 0800 MST. STATION
ELEVATION: 5388 FT.
&&
JAMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
824 AM MST WED MAR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY SNOW 2 N MACKS INN 44.52N 111.33W
03/01/2023 M6.0 INCH FREMONT ID TRAINED SPOTTER
SINCE 300 PM MST YESTERDAY. STATION
ELEVATION: 6422 FT.
&&
JAMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
919 AM MST WED MAR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW 4 NNE MENAN 43.77N 111.96W
03/01/2023 M1.0 INCH MADISON ID CO-OP OBSERVER
CO-OP OBSERVER STATION MEAI1 MENAN 4 NNE.
0519 PM SNOW RIGBY 43.68N 111.91W
02/28/2023 M1.0 INCH JEFFERSON ID CO-OP OBSERVER
CO-OP OBSERVER STATION RBYI1 RIGBY, IDAHO.
1000 PM SNOW BELLEVUE 43.47N 114.26W
02/28/2023 M1.0 INCH BLAINE ID CO-OP OBSERVER
CO-OP OBSERVER STATION BVUI1 BELLEVUE.
0700 AM SNOW 4 E ST. CHARLES 42.12N 111.31W
03/01/2023 M1.0 INCH BEAR LAKE ID CO-OP OBSERVER
CO-OP OBSERVER STATION LFTI1 3.9 E ST.
CHARLES.
0730 AM SNOW 3 WNW HEGLAR 42.49N 113.20W
03/01/2023 M1.5 INCH CASSIA ID COCORAHS
COCORAHS STATION ID-CS-3 MALTA 15.2 NE.
0700 AM SNOW SODA SPRINGS 42.66N 111.59W
03/01/2023 M1.5 INCH CARIBOU ID COCORAHS
COCORAHS STATION ID-CR-1 SODA SPRINGS.
0700 AM SNOW STANLEY 44.22N 114.93W
03/01/2023 M1.6 INCH CUSTER ID CO-OP OBSERVER
CO-OP OBSERVER STATION STAI1 STANLEY.
0917 AM SNOW GALENA 43.87N 114.66W
03/01/2023 M2.0 INCH BLAINE ID PUBLIC
GALENA LODGE SNOW STAKE.
0755 AM SNOW 3 NNW LAVA HOT SPRINGS 42.66N 112.02W
03/01/2023 M2.0 INCH BANNOCK ID COCORAHS
COCORAHS STATION ID-BK-26 LAVA HOT SPRINGS
2.9 NNW.
0700 AM SNOW BELLEVUE 43.46N 114.26W
03/01/2023 M3.5 INCH BLAINE ID COCORAHS
COCORAHS STATION ID-BN-3 BELLEVUE.
0700 AM SNOW 2 SW SUN VALLEY 43.66N 114.35W
03/01/2023 M6.9 INCH BLAINE ID COCORAHS
COCORAHS STATION ID-BN-7 KETCHUM 2.2 SSE.
0700 AM SNOW 1 WNW HAILEY 43.52N 114.32W
03/01/2023 M8.0 INCH BLAINE ID COCORAHS
COCORAHS STATION ID-BN-6 HAILEY 1.0 WNW.
0915 AM HEAVY SNOW 2 SW KETCHUM 43.66N 114.40W
03/01/2023 M13.0 INCH BLAINE ID PUBLIC
SUN VALLEY RESORT SNOW STAKE.
&&The national radar mosaic for the moment the first event began.
1 avalanche. Local standard time, as filed.
An avalanche occurred on the 1st at around 10 AM MST in Ketchum. Warm Springs road was closed between Gates Road and Jane Lane by 11 AM.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2023Every state in 2023This day in weather historyWarnings in Idaho, March 2023
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: 1090697.