Strong southwest surface winds combined with falling and newly fallen snow to produce blizzard conditions along the Rocky Mountain Front. Wind gusts in excess of 70 mph were reported as well visibilities less than one-quarter mile.
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 TFX wrote it up.
Strong southwest surface winds combined with falling and newly fallen snow to produce blizzard conditions along the Rocky Mountain Front. Wind gusts in excess of 70 mph were reported as well visibilities less than one-quarter mile.
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 Great Falls, MT wrote its last area forecast discussion before the first event at Feb 26, 6:10 AM MST, 1 hour 42 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 610 AM MST SAT FEB 26 2011 .DISCUSSION... TODAY THROUGH MONDAY...COMPLEX WEATHER SITUATION THIS MORNING. SOUTHWEST WINDS HAVE BEGUN TO BLOW AND IS QUICKLY ERODING THE COLD AIRMASS IN PLACE OVER THE COUNTY WARNING AREA. VERY COLD WIND CHILLS WILL CONTINUE THROUGH THIS MORNING AS THE WINDS INCREASE. BY AFTERNOON...TEMPERATURES SHOULD BE WARM ENOUGH TO NEGATE THE EFFECTS OF THE WIND. THE INCREASING WINDS WILL CAUSE BLOWING SNOW TO BECOME AN ISSUE AND A BLOWING SNOW ADVISORY WILL REMAIN IN PLACE UNTIL THIS EVENING. THE SURFACE GRADIENT WILL REMAIN VERY TIGHT ALONG THE ROCKY MOUNTAIN FRONT AND WINDS THERE HAVE INCREASED DRAMATICALLY. A HIGH WIND WARNING IS IN EFFECT THERE UNTIL TONIGHT. THE STRONG WESTERLY FLOW ALOFT WILL BRING COPIOUS AMOUNTS OF MOISTURE TO THE ROCKY MOUNTAINS BEGINNING EARLY SUNDAY. THE POTENETIAL EXISTS FOR A SIGNIFICANT SNOW EVENT FOR THE ROCKIES AND HAVE ISSUED A WINTER STORM WATCH FOR ELEVATIONS ABOVE 5000 FEET. SNOW WILL SPREAD EAST AND OVER THE PLAINS ON MONDAY AS THE WESTERLY FLOW ALOFT CONTINUES. TEMPERATURES WILL REMAIN BELOW SEASONAL AVERAGES BUT AFTERNOON READINGS SHOULD APPROACH THE FREEZING MARK BY MONDAY. EMANUEL MONDAY NIGHT THROUGH SATURDAY NIGHT...MODELS CONTINUE TO BE IN FAIRLY GOOD AGREEMENT THROUGH MOST OF THIS PERIOD. AN UPPER LEVEL RIDGE OF HIGH PRESSURE OVER THE WESTERN UNITED STATES WITH AN UPPER LEVEL LOW PRESSURE TROUGH OFF THE BRITISH COLUMBIA COAST WILL KEEP A MOIST ANTICYCLONIC WESTERLY FLOW ALOFT OVER THE TFX CWA THROUGH THE PERIOD. A SERIES OF SHORTWAVE TROUGHS WILL ALSO BE EJECTED FROM THE UPPER LEVEL TROUGH AND MOVE OVER THE AREA THROUGH THE PERIOD. THIS PATTERN WILL GENERALLY KEEP SNOW LIKELY IN THE MOUNTAINS THROUGH THE PERIOD WITH A CHANCE OF PRECIPITATION OVER THE PLAINS. THE FIRST SHORTWAVE WILL BE EXITING THE AREA MONDAY NIGHT INTO TUESDAY. IN THE WAKE OF THIS SHORTWAVE...A CANADIAN COLD FRONT WILL MOVE SOUTH OVER THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA...SHIFTING WINDS MORE NORTHERLY AND USHERING ANOTHER ROUND OF COLD AIR. THE RESULTING OVERRUNNING PATTERN WILL BRING A GOOD CHANCE OF SNOW TO THE PLAINS...AS HIGH TEMPERATURES ON TUESDAY FALL ABOUT 20 DEGREES FROM THOSE ON MONDAY. HOWEVER...THE COLD AIR WILL LIKELY REMAIN OUT OF THE SOUTHWEST MONTANA VALLEYS...AS TEMPERATURES THERE REMAIN NEAR NORMAL WITH LESS OF A CHANCE FOR PRECIPITATION. AS THE NEXT SHORTWAVE APPROACHES THE AREA TUESDAY NIGHT THROUGH THURSDAY...THE MOIST FLOW ALOFT WILL SHIFT MORE SOUTHWESTERLY. THE COLD FRONT WILL ALSO RETREAT TO THE NORTHEAST...ALLOWING TEMPERATURES TO AT LEAST APPROACH NORMAL LEVELS OVER THE PLAINS. HOWEVER...WITH THE PASSAGE OF THIS SHORTWAVE THURSDAY NIGHT INTO FRIDAY...THE COLD FRONT WILL SAG SOUTH ONCE AGAIN AND TEMPERATURES OVER THE PLAINS WILL COOL SIGNIFICANTLY. ANOTHER SHORTWAVE WILL APPROACH THE AREA BEGINNING FRIDAY NIGHT...WHICH WILL SET THE AFOREMENTIONED PATTERN OF EVENTS IN MOTION AGAIN. COULSTON && .AVIATION... UPDATED 1255Z. VFR CONDITIONS WILL GENERALLY CONTINUE ACROSS NORTH CENTRAL...CENTRAL...AND SOUTHWEST MONTANA THROUGH AT LEAST 12Z SUNDAY...UNLESS OTHERWISE SPECIFIED BELOW. A BROAD SHORTWAVE TROUGH WILL MOVE THROUGH THE INCREASING NORTHWESTERLY FLOW ALOFT OVER THE AREA TODAY. WHILE THIS SHORTWAVE WILL BRING INCREASING MID/HIGH LEVEL CLOUDINESS TO THE AREA...THE MAIN IMPACT OF IT WILL BE INCREASING WESTERLY SURFACE WINDS AND THE POTENTIAL FOR BLOWING SNOW. WINDS HAVE ALREADY INCREASED ALONG THE EAST SLOPES OF THE ROCKIES. GUSTS TO 60 KT ARE POSSIBLE CLOSE TO THE ROCKY MOUNTAIN FRONT THROUGH THE DAY...WHILE GUSTS OF 40 TO 45 KT ARE POSSIBLE OUT OVER THE PLAINS (INCLUDING KCTB AND KGTF). WINDS WILL SPREAD EAST (KHVR KLWT) THROUGH THE MORNING...WITH GUSTS MOSTLY UP TO 35 KT. WITH WIDESPREAD FRESH SNOWFALL THAT HAS NOT BEEN ABLE TO CRUST YET...AREAS OF MVFR/IFR VISIBILITIES IN BLOWING SNOW ARE POSSIBLE TODAY...ESPECIALLY ALONG THE EAST SLOPES OF THE ROCKIES. NEAR WHITEOUT CONDITIONS ARE POSSIBLE AT TIMES ALONG THE ROCKY MOUNTAIN FRONT. LOCALIZED GUSTS ARE EXPECTED THROUGH FAVORED CANYONS IN SOUTHWEST MONTANA BY THIS AFTERNOON...BUT THE STRONGEST WINDS ARE UNLIKELY TO DIRECTLY AFFECT THE TERMINALS (KHLN KBZN). WINDS WILL DECREASE AFTER 23Z AS THE SHORTWAVE EXITS THE AREA...WHICH WILL ALSO DECREASE THE THREAT FOR BLOWING SNOW. COULSTON && .HYDROLOGY... FOR THE JEFFERSON RIVER... ICE JAM FLOODING ON THE JEFFERSON RIVER CONTINUES NEAR SILVER STAR IN NORTHWEST MADISON COUNTY. FLOODING CONTINUES TO AFFECT THE JEFFERSON ACRES REGION...THUS THE FLOOD WARNING WILL CONTINUE UNTIL THE FLOOD WATERS HAVE RECEDED. ADDITIONALLY...A SECOND ICE JAM HAS DEVELOPED UPSTREAM OF THE FIRST ICE JAM. SHOULD THIS NEW ICE JAM BREAK...IT COULD POSSIBLY CAUSE THE ORIGINAL ICE JAM TO BREAK AS WELL...CREATING A FLASH FLOODING POTENTIAL DOWNSTREAM. THUS A FLASH FLOOD WATCH HAS BEEN ISSUED FOR A PORTION OF THE JEFFERSON RIVER FROM ABOUT 5 MILES SOUTH OF SILVER STAR...TO WATERLOO. THE WATCH WILL REMAIN IN PLACE UNTIL THE THREAT FOR FLASH FLOODING HAS CEASED. FOR THE MISSOURI RIVER... A NEW ICE JAM HAS DEVELOPED JUST NORTH OF FORT BENTON ON THE MISSOURI RIVER. MINOR FLOODING HAS BEEN REPORTED ON THE NORTH SIDE OF FORT BENTON IN LOW LYING AREAS...THUS A FLOOD WARNING HAS BEEN ISSUED. THE SITUATION WILL BE CLOSELY MONITORED AS ADDITIONAL FLOOD HIGHLIGHTS MAY BE REQUIRED SHOULD THE ICE JAM CONTINUE TO GROW OVER THE NEXT DAY OR SO. && .PRELIMINARY POINT TEMPS/POPS... GTF 25 14 33 16 / 0 10 20 20 CTB 20 10 28 10 / 0 10 20 30 HLN 21 14 34 17 / 0 0 20 30 BZN 19 8 31 10 / 0 10 20 20 WEY 19 -5 19 4 / 10 10 30 40 DLN 23 9 30 12 / 0 10 10 20 HVR 18 9 26 11 / 10 20 20 30 LWT 22 10 29 16 / 0 10 20 20 && .TFX WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY UNTIL 8 PM MST THIS EVENING BLAINE... CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK...CHOUTEAU... EASTERN PONDERA...EASTERN TETON...FERGUS...HILL...JUDITH BASIN... LIBERTY...TOOLE. WIND CHILL ADVISORY UNTIL 10 AM MST THIS MORNING BLAINE... CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK...CHOUTEAU... EASTERN GLACIER...EASTERN PONDERA...EASTERN TETON...FERGUS... HILL...JUDITH BASIN...LIBERTY...NORTHERN ROCKY MOUNTAIN FRONT... SOUTHERN ROCKY MOUNTAIN FRONT...TOOLE. HIGH WIND WARNING UNTIL 11 PM MST THIS EVENING NORTHERN ROCKY MOUNTAIN FRONT...SOUTHERN ROCKY MOUNTAIN FRONT. WINTER STORM WATCH FROM SUNDAY MORNING THROUGH TUESDAY MORNING FOR ELEVATIONS ABOVE 5000 FEET FOR NORTHERN ROCKY MOUNTAIN FRONT...SOUTHERN ROCKY MOUNTAIN FRONT. FLASH FLOOD WATCH THROUGH SATURDAY AFTERNOON FOR PORTIONS OF THE JEFFERSON RIVER IN NORTHERN MADISON COUNTY...FROM NORTH OF TWIN BRIDGES TO WATERLOO. FLOOD WARNING UNTIL 10 AM SATURDAY FOR PORTIONS OF THE JEFFERSON RIVER IN NORTHERN MADISON COUNTY...BETWEEN TWIN BRIDGES AND SILVER STAR. FLOOD WARNING UNTIL 630 PM SUNDAY EVENING FOR PORTIONS OF THE MISSOURI RIVER NEAR FORT BENTON. WINTER WEATHER ADVISORY UNTIL 8 PM MST THIS EVENING EASTERN GLACIER...NORTHERN ROCKY MOUNTAIN FRONT...SOUTHERN ROCKY MOUNTAIN FRONT. && SHORT TERM...EMANUEL LONG TERM...COULSTON AVIATION...COULSTON WEATHER.GOV/GREATFALLS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 655 AM MST SAT FEB 26 2011 MTZ009-048-271400- NORTHERN ROCKY MOUNTAIN FRONT-SOUTHERN ROCKY MOUNTAIN FRONT- 655 AM MST SAT FEB 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT A WIND CHILL ADVISORY IS IN EFFECT UNTIL 10 AM MST. A WINTER WEATHER ADVISORY FOR BLOWING SNOW IS IN EFFECT UNTIL 8 PM MST TONIGHT. A HIGH WIND WARNING IS IN EFFECT UNTIL 11 PM MST TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A WINTER STORM WATCH FOR ELEVATIONS ABOVE 5000 FEET IS IN EFFECT FROM SUNDAY MORNING THROUGH TUESDAY MORNING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ011-012-014-044>047-049>051-271400- HILL-CASCADE-CENTRAL AND SOUTHERN LEWIS AND CLARK-TOOLE-LIBERTY- EASTERN PONDERA-BLAINE-EASTERN TETON-JUDITH BASIN-FERGUS- 655 AM MST SAT FEB 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT A WIND CHILL ADVISORY IS IN EFFECT UNTIL 10 AM MST. A BLOWING SNOW ADVISORY IS IN EFFECT UNTIL 8 PM MST TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE NEXT WEATHER SYSTEM TO AFFECT THE AREA WILL ALSO LIKELY BRING SNOW TO THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA MONDAY THROUGH TUESDAY WITH ANOTHER ROUND OF COLD TEMPERATURES MONDAY NIGHT THROUGH TUESDAY NIGHT. THIS SITUATION WILL NEED TO BE MONITORED FOR POSSIBLE HIGHLIGHTS FOR WINTER WEATHER. HOWEVER...THIS COLD AIR WILL LIKELY REMAIN OUT OF THE SOUTHWEST MONTANA VALLEYS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ013-271400- CHOUTEAU- 655 AM MST SAT FEB 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT A WIND CHILL ADVISORY IS IN EFFECT UNTIL 10 AM MST. A BLOWING SNOW ADVISORY IS IN EFFECT UNTIL 8 PM MST TONIGHT. A FLOOD WARNING IS IN EFFECT FOR LOCATIONS ALONG THE MISSOURI RIVER IN THE FORT BENTON AREA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE NEXT WEATHER SYSTEM TO AFFECT THE AREA WILL ALSO LIKELY BRING SNOW TO THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA MONDAY THROUGH TUESDAY WITH ANOTHER ROUND OF COLD TEMPERATURES MONDAY NIGHT THROUGH TUESDAY NIGHT. THIS SITUATION WILL NEED TO BE MONITORED FOR POSSIBLE HIGHLIGHTS FOR WINTER WEATHER. HOWEVER...THIS COLD AIR WILL LIKELY REMAIN OUT OF THE SOUTHWEST MONTANA VALLEYS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ015-271400- MADISON- 655 AM MST SAT FEB 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT A FLOOD WARNING REMAINS IN EFFECT ALONG THE JEFFERSON RIVER SOUTH OF THE TOWN OF SILVER STAR...DUE TO ICE JAM CONDITIONS. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THE JEFFERSON RIVER FROM NORTH OF TWIN BRIDGES TO WATERLOO DUE TO THE POTENTIAL FOR ICE JAMS TO BREAK. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE NEXT WEATHER SYSTEM TO AFFECT THE AREA WILL ALSO LIKELY BRING SNOW TO THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA MONDAY THROUGH TUESDAY WITH ANOTHER ROUND OF COLD TEMPERATURES MONDAY NIGHT THROUGH TUESDAY NIGHT. THIS SITUATION WILL NEED TO BE MONITORED FOR POSSIBLE HIGHLIGHTS FOR WINTER WEATHER. HOWEVER...THIS COLD AIR WILL LIKELY REMAIN OUT OF THE SOUTHWEST MONTANA VALLEYS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ008-052>055-271400- BEAVERHEAD-JEFFERSON-BROADWATER-MEAGHER-GALLATIN- 655 AM MST SAT FEB 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT THE PROBABILITY IS LOW FOR WIDESPREAD HAZARDOUS WEATHER. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE NEXT WEATHER SYSTEM TO AFFECT THE AREA WILL ALSO LIKELY BRING SNOW TO THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA MONDAY THROUGH TUESDAY WITH ANOTHER ROUND OF COLD TEMPERATURES MONDAY NIGHT THROUGH TUESDAY NIGHT. THIS SITUATION WILL NEED TO BE MONITORED FOR POSSIBLE HIGHLIGHTS FOR WINTER WEATHER. HOWEVER...THIS COLD AIR WILL LIKELY REMAIN OUT OF THE SOUTHWEST MONTANA VALLEYS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ010-271400- EASTERN GLACIER- 655 AM MST SAT FEB 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT A HIGH WIND WARNING IS IN EFFECT UNTIL 11 PM MST TONIGHT. A BLOWING SNOW ADVISORY IS IN EFFECT UNTIL 8 PM MST TONIGHT. A WIND CHILL ADVISORY IS IN EFFECT UNTIL 10 AM MST. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE NEXT WEATHER SYSTEM TO AFFECT THE AREA WILL ALSO LIKELY BRING SNOW TO THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA MONDAY THROUGH TUESDAY WITH ANOTHER ROUND OF COLD TEMPERATURES MONDAY NIGHT THROUGH TUESDAY NIGHT. THIS SITUATION WILL NEED TO BE MONITORED FOR POSSIBLE HIGHLIGHTS FOR WINTER WEATHER. HOWEVER...THIS COLD AIR WILL LIKELY REMAIN OUT OF THE SOUTHWEST MONTANA VALLEYS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
519 AM MST SAT FEB 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0221 AM NON-TSTM WND GST 8 SE EAST GLACIER PARK 48.37N 113.10W
02/26/2011 M67 MPH GLACIER MT MESONET
DEEP CREEK RAWS - ELEVATION 5341
&&
EMANUELPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
521 AM MST SAT FEB 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0421 AM NON-TSTM WND GST 8 SE EAST GLACIER PARK 48.37N 113.10W
02/26/2011 M77 MPH GLACIER MT MESONET
DEEP CREEK RAWS - ELEVATION 5341
&&
EMANUELPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
618 AM MST SAT FEB 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 AM NON-TSTM WND GST 1 ENE EAST GLACIER PARK 48.45N 113.20W
02/26/2011 M58 MPH GLACIER MT DEPT OF HIGHWAYS
TWO MEDICINE DOT SITE
&&
EMANUELPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
703 AM MST SAT FEB 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0645 AM NON-TSTM WND GST BABB 48.86N 113.44W
02/26/2011 M79 MPH GLACIER MT TRAINED SPOTTER
WIND GUST OF 79 MPH MEASURED AT 645 AM. SUSTAINED WINDS
OF 40 TO 50 MPH. BLOWING SNOW WITH NEAR ZERO VISIBILITY.
&&
NJL3 blizzard. Local standard time, as filed.
Visibilities of one-eigth of a mile and winds gusting over 60 mph were reported at Browning 1S.
Sustained winds of 49 mph with gusts to 62 mph and visibilities less than one-quarter mile were reported at the Cut bank ASOS site.
Sustained winds of 45 mph and visibilities of near zero were reported at Choteau 10NW.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2011Every state in 2011This day in weather historyWarnings in Montana, February 2011
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: 278592, 278594, 278595.